C2-030.840.01.08.02.pdf

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© Siemens, 2009

- For internal use only - All documents may only be used by authorized personnel for rendering services on Siemens Healthcare Products. Any document in electronic form may be printed once. Copy and distribution of electronic docu-ments and hardcopies is prohibited. Offenders will be liable for damages. All other rights are re-served.

Print No.:

SOMATOM Definition Flash

System

Troubleshooting Guide

CT

C2-030.840.01.08.02 English

Instructions for Troubleshooting

© Siemens, 2009 10430603

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1Copyright / Version / Disclaimer

Copyright

“© Siemens, 2009“ refers to the copyright of a Siemens entity such as Siemens Aktienge-sellschaft - Germany, Siemens Shenzhen Magnetic Resonance Ltd. - China, Siemens Shanghai Medical Equipment Ltd. - China, Siemens Medical Solutions USA Inc. - USA and/or Siemens Healthcare Diagnostics Inc. - USA.

Document Version

Siemens reserves the right to change its products and services at any time.

In addition, manuals are subject to change without notice. The hardcopy documents corre-spond to the version at the time of system delivery and/or printout. Versions to hardcopy documentation are not automatically distributed. Please contact your local Siemens office to order current version or refer to our website http://www.healthcare.siemens.com.

Disclaimer

Siemens provides this documentation “as is“ without the assumption of any liability under any theory of law.

The service of equipment described herein is to be performed by qualified personnel who are employed by Siemens or one of its affiliates or who are otherwise authorized by Sie-mens or one of its affiliates to provide such services.

Assemblers and other persons who are not employed by or otherwise directly affiliated with or authorized by Siemens or one of its affiliates are not entitled to use this documentation without prior written authority.

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0Table of Contents

1 _______ General ________________________________________________________ 8

Safety information. . . 8

Safety warnings . . . 8

Information for switching off the gantry power . . . 11

Service push-button S1 in PDC . . . 12

Safety bolts. . . 13

Data ring protection . . . 15

Open/close the upper front ring segment . . . 16

Opening . . . 16

Closing . . . 17

Edge protective strips . . . 19

Error message telegram structure . . . 20

2 _______ XRS __________________________________________________________ 21

General. . . 21

Safety . . . 21

Notes. . . 21

Definitions and abbreviations . . . 21

Prerequisites . . . 22

Overview. . . 23

Problem isolation . . . 23

Generator oscillator procedure (GenOSC) . . . 23

XDC/Tube . . . 24 XDC/Tube Test . . . 24 XDC/Tube test. . . 24 High voltage . . . 25 HV troubleshoot test . . . 25 TSG high voltage . . . 25

HV plugs with arcing tracks . . . 30

HV plug installation at HV sockets . . . 31

High voltage tests . . . 32

Filament (FIL) . . . 35

TSG filament . . . 35

Filament . . . 35

Anode rotation (RAC) . . . 36

TSG Anode Rotation (RAC) . . . 36

Single pulse test . . . 38

Single pulse test . . . 38

Single pulse test diagrams . . . 40

MVT cable check . . . 43

Performing the MVT cable check . . . 43

Arcing . . . 44

Check/adjust the tube oil pressure . . . 45

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Switching on status indicator of XGS . . . 49 Measuring points. . . 51 Measuring points D700, D701, D702, D703 . . . 51 LED´s on D700, D701, D702, D703 . . . 57

3 _______ DMS __________________________________________________________ 64

General . . . 64 Safety. . . 64 Notes . . . 64

Definitions and abbreviations. . . 65

Prerequisites . . . 65

TSG Image Quality . . . 66

General . . . 66

TSG strong rings . . . 67

TSG sporadic strong rings. . . 68

TSG weak rings . . . 69

TSG sporadic weak rings . . . 70

TSG rings in outer slices only . . . 71

TSG Streak artifacts . . . 72

TSG Dual Source problems. . . 73

TSG Spatial Resolution (bad MTF results) . . . 74

TSG other artifacts . . . 75

Tests for Image Quality . . . 76

TSG DMS Components . . . 91

TSG DMS Power path . . . 91

TSG UHR mechanics . . . 93

Tests & Hints . . . 99

DAS Type not o.k. . . . 99

Firmware update failed . . . 99

Dynamic collimation. . . 99

Signals from half detector missing. . . 99

Storage of Test Results . . . 100

Environmental Conditions . . . 100

Hints for defective channel detection . . . 101

Distinguishing between the module and other components . . . 102

How to interpret the physicist’s line . . . 102

4 _______ Datalink ______________________________________________________ 103

General . . . 103

Safety. . . 103

Notes . . . 103

Definitions and abbreviations. . . 103

Prerequisites . . . 104

Troubleshooting Data transmission . . . 106

General . . . 106

Overview . . . 106

TSG Datalink. . . 113

TSG permanent errors on DAS Controller(s) > IRS Receiver . . . 113

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TSG data quality at RX modules. . . 115

TSG sporadic errors in link DCON > IRS . . . 116

Step 1 (checking) . . . 117

Step 2 (debugging) . . . 117

Step 3 (localizing) . . . 118

Tests for data transmission . . . 123

Cleaning a fiber optic cable. . . 123

Data link test . . . 123

Appendix. . . 126

How check the transmitting antenna . . . 126

Measuring the fiber optic signal along the link . . . 127

Check the electrical RF signals at the Rx modules. . . 127

Check the quality of data signal (jitter) at the REC input . . . 128

5 _______ Fastlink ______________________________________________________ 129

General. . . 129

Safety . . . 129

Notes. . . 129

Definitions and abbreviations . . . 130

Prerequisites . . . 130

TSG Fastlink . . . 131

TSG rotating fastlink connections . . . 132

TSG stationary fastlink connections . . . 135

TSG for connection UMAS > UMAR . . . 139

TSG for connection UMAR > UMAS . . . 141

TSG data quality at Tx modules . . . 143

TSG data quality at Rx modules . . . 144

Tests for data transmission . . . 145

6 _______ CAN Bus _____________________________________________________ 149

CAN Bus. . . 149

Data transfer UMAS to UMAR via CAN slip ring. . . 149

Data transfer UMAS to UMAR via Fast Link (function pack 1: CAN over IP) . . . 150

TSG CAN bus (rotating part). . . 152

TSG CAN bus to XGS. . . 153

7 _______ CANopen Bus_________________________________________________ 157

CANopen Bus. . . 157

TSG CAN open bus . . . 157

CAN open external bus . . . 160

8 _______ Stop report loop_______________________________________________ 161

Stop report loop . . . 161

TSG stop report loop . . . 162

9 _______ Network______________________________________________________ 167

Network . . . 167

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Troubleshooting network components . . . 169

10 ______ Rotating controller _____________________________________________ 172

Rotating controller tests . . . 172

DOM . . . 172

COC (Tube collimator) . . . 172

11 ______ Stationary controller ___________________________________________ 174

Stationary controller tests . . . 174

Prerequisites . . . 174

Master stationary (MAS) test . . . 174

Gantry panel control (GPC) test . . . 175

Rotation control (ROT) test . . . 175

Patient Handling System (PHS) test . . . 176

CPI (PMM) test . . . 177

12 ______ System test ___________________________________________________ 179

System test . . . 179

DOM functional . . . 179

X-ray timeout test. . . 180

Dyn. Collimation . . . 180

13 ______ Cooling System _______________________________________________ 182

Water cooling . . . 182 General . . . 182 TSG Water Cooling . . . 185

14 ______ PDC_A cabinet ________________________________________________ 192

General overview . . . 192 Power distribution . . . 193

Errors and troubleshooting hints . . . 193

Overview . . . 195

Circuit breakers and relays . . . 195

Residual current monitor F18 . . . 199

Service pushbutton S1 . . . 200

Relays K1, K2 . . . 201

Line voltage circuit breaker test . . . 202

Service power socket. . . 204

24 Volt power supply for U1 . . . 204

UPS . . . 206

15 ______ Bad motor controller after corrupted FW update____________________ 208

Information for systems with SOMARIS/7, versions below VA40 . . . 208

Work steps for systems with SOMARIS/7, versions VA40 and higher . . . 209

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1-1General

Safety information

0

Only qualified and system-trained service staff are allowed to perform CT system installa-tion, service, maintenance, and quality assurance. Ensure that the most recent version of the service documentation is on hand.

To avoid any risk of injury to persons and/or damage to the system, read and observe the General Safety Notes (TD00-000.860.01.xx.xx). Please read and observe the Prod-uct-specific safety notes (C2-030.860.01.xx.xx) which include very important

safety-related information as well as information about handling of screws and nuts, use of Loctite, and instructions for torque wrenches. You will find the following information in the “Product-specific safety notes.”

Safety information related to the method of risk management new link

General safety information such as the handling of service documentation, CT system training request, X-ray protection, electrical protection, service tools... (C2-030.860.01 / General safety warnings).

General safety information about working in the gantry with the power off/on

(C2-030.860.01 / Powering off the gantry and preparing to work on it).

Use of the patient table as lifting device for gantry part replacement (C2-030.860.01 / Usage of the Patient Table as a Lifting Device).

Laser products (C2-030.860.01 / Laser products).

Attachment of screws and nuts, use of Loctite, adjustment instructions for the torque wrench (C2-030.860.01 / Screw connections).

Safety warnings

0

The following safety information is an extract from the information in the Product-specific safety notes (C2-030.860.01.xx.xx) (C2-030.860.01 / Safety information). It is mandatory to read and observe the safety information described below.

CAUTION [ hz_serdoc_F13G02U01M04 ]

Flammable sprays. Risk of inflammation!

¹ Only use approved and recommended cleaning agents as described.

CAUTION [ hz_serdoc_F13G07U01M01 ]

Handling parts of the system that may have come into con-tact with patients may lead to infection caused by blood-borne pathogens.

Infection caused by blood-borne pathogens!

¹ Take appropriate precautions against exposure to blood-borne pathogens (e.g. wear gloves).

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WARNING [ hz_serdoc_F13G01U13M02 ]

High voltages and/or mechanical movements (e.g. gantry rotation) may lead to accidents and injuries when opening system covers.

Risk of accident or injury!

¹ Only authorized service personnel are allowed to open system covers.

CAUTION [ hz_serdoc_F13G01U03M01 ]

Non-compliance with X-ray regulations may lead to radiation exposure to you and/or other persons.

Risk of radiation exposure!

Observe radiation protection regulations when X-rays are switched on, e.g. :

¹ Never work inside the gantry room. ¹ Do not leave the system unattended.

¹ Make sure there isn't anyone inside the gantry room. ¹ Ensure that personnel cannot enter the gantry room

unnoticed (e.g. lock doors, if necessary).

WARNING [ hz_serdoc_F13G01U05M03 ]

Dangerous voltages are present when the system is switched on. Dangerous voltages may be present even when the sys-tem is switched off due to capacity power.

Risk of electric shock!

¹ Observe power-off instructions and discharge wait times (allow at least five minutes discharge time after the last scan for all involved HV and UDC/UPS parts). ¹ Secure the system against unintended switch-on (e.g.

block breaker and/or mark breaker against switch-on). ¹ Ensure via measurements that all voltages are

switched off.

¹ Connect the stationary and rotating parts of the gantry to a protective conductor prior to working in the gantry.

CAUTION [ hz_serdoc_F13G01U06M01 ]

Rotating parts are exposed when gantry covers are opened. Risk of injury!

¹ Maintain a safe distance and ensure that objects do not come in contact with rotating parts.

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CAUTION [ hz_serdoc_F13G05U01M04 ]

Unfixed parts/cables during gantry rotation. Risk of accident or injury!

¹ Make sure that all parts and cables are mounted prop-erly before starting rotation.

CAUTION [ hz_serdoc_F13G02U01M01 ]

Temperature of tube and/or tube cooling device parts may be above 70°C (with Straton up to 130°C).

Risk of burns!

¹ Avoid contact with oil and exposed parts of X-ray tube and cooling device.

¹ Wait until tube and cooling device parts are chilled down.

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Information for switching off the gantry power

1.1

Always read and observe the switching-off/-on instructions described in the Prod-uct-specific safety notes (C2-030.860.01.xx.xx) (C2-030.860.01 / Product-specific safety notes).

In the individual Replacement of Parts sections, always refer to the switching-off/-on worksteps given in the instructions.

To reach system standby status with the panels removed (rear ring removed), install a CB (cover bridge #8904752) with switched-off system. After SYS/ON, an Init/Resum-ing of the system is performed and the system will reach standby status.

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Service push-button S1 in PDC

1.2

Fig. 1: Service push-button S1

Pos. 1 Service push-button S1 Pos. 2 Push-button

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Safety bolts

1.3

Front safety bolt > located at the bottom right gantry front

Fig. 2: Front rotation safety bolt - unlock position

Fig. 3: Front rotation safety bolt - lock position

Lock gantry rotation

Press bolt slightly to the right (left image, item 1) to release the bolt lock (left image, item 2).

Press bolt lock towards the gantry (left image, item 2) and move the safety bolt to the left until the bolt is in lock position.

¹ Make sure that the bolt lock (left image, item 2) moves towards the table side (forced by the spring of the locking mechanism). This ensures that the rotation lock position is fixed and secured.

Unlock gantry rotation

Press bolt slightly to the left (right image, item 1) to release the bolt lock (right image, item 2).

Press bolt lock (right image, item 2) towards the gantry and move the safety bolt to the right until the bolt is in unlock position.

¹ Make sure that the bolt lock (right image, item 2) moves towards the table side (forced by the spring of the locking mechanism). This ensures that the rotation lock position is fixed and secured.

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Rear safety bolt

Fig. 4:

Rear rotation safety bolt (item 1) located between XGR A and HV-tank A at the rear of the gantry.

Lift bolt and turn it 90 degrees to bring it into the lock or unlock position. ¹ Make sure that the bolt is really at the correct (lock/unlock)

posi-tion. If the bolt accidentally moves into the lock position during rotation, the gantry may be damaged.

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Data ring protection

1.4

Installing the data ring protection

Fig. 5: Data ring protection

Install the 2 data ring protectors (e.g. item 1) before working at the gantry front.

- 2 Plexiglas protectors are necessary to cover a larger area on the data ring. - Attach them to the stationary data ring.

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Open/close the upper front ring segment

1.5

Opening

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Release locks and attachment nuts

Fig. 6: Front top ring segment

Remove the four M13 nuts (item 2).

Loosen the 2 securing locks (arrows, 1/4 turn) using a 5 mm hexagonal wrench key.

Pull top of ring segment out of its positioning clamps (item 3) to the outer end stop.

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Lift the upper front ring segment to service position.

Closing

0

Remove the edge protective strips (Edge protective strips / p. 19).

Close the upper front ring segment, following in reverse order the instructions for open-ing it.

NOTE Verify that there is enough grease in the slot of the plastic ring. If not, add grease to the slot.

The grease seals prevent liquid from coming into the gantry. See the SPC for the relevant material number.

Fig. 7: Upper front segment opened

Fig. 8: Supporting stand gantry lock

Lift the top segment with one hand.

Remove the supporting stand (item 2) from its parking position and extend it until it is blocked.

Secure the supporting stand to the lock (item 3).

Go to the second support stand (do not walk between table and gantry) and secure the second supporting stand to the lock as done before.

Install the edge protective strips (two pieces) so that the complete upper front ring segment edge is fully covered (see (Edge protective strips / p. 19))

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Fig. 9: Park position of supporting stands

Ensure that the supporting stands are securely locked in their parking posi-tions (arrow) before the gantry cover is closed.

¹ Improperly parked supporting stands will lead to severe damage of components inside the gantry!

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Edge protective strips

1.6

Install the two edge protective strips.

Fig. 10: Edge protective strip

Install the edge protective strips (two pieces) so that the complete upper front ring segment edge is fully covered (see image).

¹ Install the edge protective strips as soon the upper front segment is opened.

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Error message telegram structure

1.7 Structure of the error message telegram, see below.

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2-2XRS

General

0

Safety

0

WARNING [ hz_serdoc_F13G01U12M03 ]

Avoid accident and injury or damage to parts. Risk of accident and injury!

¹ Read and observe the safety information contained in the “General” section of this document and/or the “Product specific safety notes”.

Notes

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This section contains information on isolating XRS problems

Section “General” > general information.

Section “Overview” > XRS Information.

Section “High voltage” > High voltage TSG followed by high voltage test descrip-tions.

Section ”Filament” > Filament TSG followed by filament test description.

Section ”Anode rotation” > anode rotation TSG followed by RAC test description.

Section ”MV cable check” > Single Pulse test.

Section ”XRS hints” > XRS hints.

Section ”Measuring point” > Table of LEDs and measuring points on XGS/XRS.

Definitions and abbreviations

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Tab. 1 Definitions and abbreviations

Term Definition / Abbreviation

XDC X-ray deflection control

XGR X-ray generator, rotating

XGS X-ray generator, stationary

XRS X-ray system

XRT X-ray tube

XTA Tube assembly

XTC X-ray tube cooling

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Prerequisites

0 Documents

n.a.

Tools and auxiliary equipment

Standard tool set

HV test plugs

HVT High voltage tank

TSG Troubleshooting Guide

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Overview

2.1 The XRS section contains information on possible XRS tests and the corresponding Trou-bleshooting Guides. With the SOMATOM Definition Flash, trouTrou-bleshooting always starts by calling up the eventlog and searching for the relevant error message. Follow the instruc-tions given in this error message for troubleshooting. In some cases, the error message links you to Troubleshooting Guides as described in this document. This link is normally used if the Troubleshooting Guide is too complex or images are needed for troubleshooting. Additionally, read the information stored in the tube history (Local Service >Report). This information can always be useful in case of XRS problems.

Problem isolation

0

Principle problem isolation in case of XRS problems 1. Find the according error message in Eventlog

NOTE The XGR and XGS assemblies are continuously communicat-ing uscommunicat-ing the CAN bus after the system is switched on. For this reason, 2 error messages are usually sent to the log-book after XRS problems. Always check both (XGS/XGR) error messages when troubleshooting.

2. Follow the instructions given in the extended error message for troubleshooting

¹ The information provided in the error message guides you in finding the problem. In some cases, you are linked to the Test and Troubleshooting instructions, # C2-030.840.01.... In this case, follow the relevant Troubleshooting Guides described in this document.

Generator oscillator procedure (GenOSC)

0

Generator oscillator adaptation (Gen-Osc) is an automatic program. The function of the program is to adapt the inverter frequencies. The program performs very short scans with different inverter frequencies to find the minimum resonance point. This value is stored to D700 in XGS.

The frequency adaptation procedure must run successfully; otherwise, XRS errors such as UT too high or UT max errors (e.g XRS_83 error) may abort scanning. The same errors may appear if parts of the oscillating circuit (e.g MV cable, XGS_PDC_Control, HVT / MVT) have been replaced without performing GenOSC after the replacement. For this reason, always use the relevant guided tour after the replacement of parts.

NOTE If GenOsc fails because of arcing, try using dummy plugs (i.e. test plugs for HVT) and perform GenOsc again with dummy plugs installed.

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XDC/Tube

2.2

XDC/Tube Test

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INIT Tests:

During INIT, all XRT drivers of the XDC (outputs on X13 and X14) are tested in 2 steps. The first step is an isolation check for detecting short circuits between the output wires and ground or power (230 V). This step can detect defective driver gates within the XDC as well. The second step activates the drivers and can detect short circuits between the output wires or broken wires. The INIT tests have failed if any warning or error message occurs in the Eventlog during step 1 or 2, or if the requested currents in step 2 cannot be reached. XDC/Tube Self-Test within Service SW:

The XDC/tube self-test is basically the same as the INIT test except that the grid function is tested as well. Depending on the actual system state, the XDC/tube self-test tolerates some problems. Therefore, if the XDC/tube self-test fails, switch the gantry off and then on again to initialize an INIT test.

Test results:

When the test fails, it leads to the warning message " CT_DCA/B 31" where the parameters give information on which part of the test fails. In addition to this information, there can be additional errors or warnings which indicate the error. Follow the instructions in the warn-ing/error message for troubleshooting

Usage of the tests:

The XDC/Tube self-test can help detect problems in the output drivers of the XDC, prob-lems within cabling, or probprob-lems within the tube. The test can be helpful, when the XDC has aborted scans with the error message "CT_DCA/B 51 .." or "CT_DCA/B 50" espe-cially when parameter 3 is 0 x 00, 0 x 01, 0 x 04, 0 x 05, 0 x 08, 0 x 09, 0 x 12, 0 x 17, 0 x 1D, 0 x 1E or 0 x 1F. Be aware that any of these errors can happen during arcing as well, without any real HW problem within the XDC or the tube. If the INIT tests fail, you have a problem in the XDC, cabling, or the tube. If any additional error or warning message occurs in the Eventlog during INIT, it can be used to help detect where the problem is located. You can disconnect the cable on the XDC (X13 and X14) and/or the tube (X8 and X4) and then repeat the INIT test. When the additional errors/warnings disappear, you have discon-nected the faulty part from the XDC.

Remark: Test can be used when the system is or is not in stand-by status.

XDC/Tube test

0

XDC/Tube test

Performing the filament test

1. Select Local Service > Test Tools > Tube/Generator 2. Select XDC/Tube.

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High voltage

2.3

HV troubleshoot test

0

This test tool supports the troubleshooting in case of high voltage issues. The HV trouble-shoot test analyzes the last 1000 scans and requires at least 200 scans. Thus, for a useful result it is a prerequisite that the system has been in normal operation for about one week prior to using this tool. Consequently, the test tool is not suited to verify the success of recent service work. For example: If Getter was performed before the tool is used, this fal-sifies the result.

The test evaluates the circumstances which might have caused scan aborts due to arcings in the tube history. Based on the test results, certain worksteps/checks are listed in a flow-chart which follows the TSG high voltage part.

NOTE The HV troubleshooting test analyzes only arcings which caused scan aborts. A continuous decline of the tube power cannot be identified by this tool.

Please note the following conditions and limitations for successful use of the HV troubleshooting test:

The HV troubleshooting test can only be used when the scan aborts caused by arcings have occurred; otherwise misleading results may be produced.

The HV troubleshooting test analyzes the last 1000 scans. e.g. if you have tightened the oil couplings after a first run of the tool and you run the tool again, the tool will present the same result as before.

If less than 200 scans have been performed with a tube, the tool does not perform eval-uation.

For meaningful results, the system must have been in normal operation for about one week prior to using the tool! Therefore, the tool is not suitable for verifying the success of recent service work.

TSG high voltage

0

The following high voltage TSG is used in case of high voltage problems. The TSG provides a guide line to troubleshoot HV problems.

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Tab. 2 High voltage TSG

Step Action

1

Check the Eventlog for:

UT max and /or UT too high errors (e.g CT_GSA/GRA_83) or arcing problems (CT_GSA/GRA_68)

If above-mentioned error appears > continue with item 2

In all other cases > check Eventlog for other error message instructions. 2

Perform the tube history evaluation (Local Service > Test tools >

Tube/Generator > HV troubleshoot A or B). One of the following mes-sages (1-7) is displayed after tube history evaluation. Follow the instructions given in the text and see flowchart (Fig. 12 / p. 29) as a guide:

1. Tube history does not contain enough scans for evaluation > no evalu-ation possible > continue with item 3.

2. Tube history evaluation does not indicate a tube arcing problem lead-ing to scan aborts > no XRT/XTC Problem > check Eventlog for other error messages and follow instructions given in the message.

3. Tube history evaluation does not show a considerable number of tube arcs > no evaluation possible > continue with item 3.

4. Tube history evaluation shows tube arcs caused by low oil-pressure > Assure properly closed cooling hose couplings at tube and cooling unit. .

¹ If the couplings were properly closed, replace both the tube and tube cooling unit.

5. Tube history evaluation shows tube arcs caused by low oil-pressure or even loss of oil

Check the gantry for oil contamination. If found, clean it, replace both the tube and tube cooling unit and inform HSC CT.

¹ If no oil found, assure properly closed cooling hose couplings at tube and cooling unit

¹ If the couplings were properly closed, replace both the tube and tube cooling unit.

6. Tube history evaluation shows mainly one side tube arcs without cool-ing oil-pressure correlation

Check HV plugs for burn marks (examples see (HV plugs with arcing tracks / p. 30)

¹ If burn marks are visible, clean the HV plugs and receptacles (inside) with alcohol. If the problem persists, replace the tube or HV cable con-nection to HV tank.

¹ If no burn marks are visible, perform HVC plug tests as shown in the flowchart (Fig. 12 / p. 29) .

7. Tube history evaluation shows tube arcs without cooling oil-pressure correlation

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3

Perform GenOSC (Local Service > Tune-up > Expert Mode > GenOSC). a) if GenOSC is aborted due to a problem > continue with item 4

b) if the HV problem is not solved after GenOSC > continue with item 5. c) if the HV problem is solved > GenOSC tables are stored in D700 XGS.

No further action is necessary.

4

Perform GenOSC with installed test plugs. See test plug installation (HVC with plug test / p. 33).

a) if the GenOSC is still aborted > check the Eventlog for CT_GSA/GRA messages and follow the instructions given in the error message. b) if the GenOSC is ok > try GenOSC again with installed X-ray tube > if

the problem recurs exchange XRT (X-ray tube).

5

Perform Gettering (Local Service > Tune-up > Expert Mode > Getter). a) if the HV problem is not solved after gettering the tube > continue with

item 6.

b) if the HV problem is solved > no further action.

6 1. Switch system to the COMP/ON status at the control box.

2. Press service switch S1 in the PDC to switch off the gantry power. 3. Switch off rotation enable switch S301.

4. Remove HV plugs from the HV tank and the HV sockets.

5. Check HV plugs for signs of arcing (black dots or stripes (HV plugs with arc-ing tracks / p. 30)).

a) If there are any signs of arcing > continue with item 7 b) If there are no signs of arcing > continue with item 8.

7

If there are any signs of arcing on the HV plugs, HV receptacles or the insu-lators > clean the parts with alcohol.

a) If any signs of arcing (cracks) remain > change the relevant parts. b) If there are no signs of arcing remaining on the parts > reinstall HV plugs

using new silicon disks or insulators. Try scanning again > if the HV problems recur continue with item 8.

8

Perform the HVC tube test (Local Service > Test Tools > Tube/Generator > HVC tube). Follow the dialog of the HVC tube test (tube test with high volt-age but without load).

a) If there are CT_GSA/GRA error messages found in the Eventlog > con-tinue with item 9.

b) If there are no CT_GSA/GRA error messages found in the Eventlog > continue with item 11.

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9

Perform the HV plug test with installed dummy plugs ( #10 093 700) at the HV sockets . Follow the dialog of the HVC plug test (Local Service > Test Tools > Tube/Generator > HVC with plugs).

¹ Install the HV test plugs into the HV sockets using new insulators and tighten the HV plugs with a torque of 25 Nm.

a) If the test is aborted after 80 s by the UMAR (scan time exceeded), there is no HV problem on generator side > change tube.

b) If there are still CT_GSA/GRA error messages found in the logbook > continue with item 10.

10

Perform HVC plug test scans with installed dummy plugs (#1621791) at HV tank (Local Service > Test Tools > Tube/Generator > HVC with plugs). Follow the dialog of the HVC plug test.

a) If there are no CT_GSA/GRA error messages found in the logbook (UMAR errors are acceptable) > change both HV cables including the HV sockets.

b) If there are CT_GSA/GRA error messages found in the logbook > change HVT.

11

The HV problem is related to tube load.

Possible reasons: Inverter problem, ground problem, HVT.

a) Check Eventlog for XRS errors related to inverters > if there are any, fol-low the instructions given in the error message.

b) Check ground connections (bad contact....) of the XGS parts. c) Perform the single pulse test.

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HV plugs with arcing tracks

0 HV plugs and insulators with arcing tracks

Fig. 13: HV plug with signs of arcing

Fig. 14: HV plug with signs of arcing

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HV plug installation at HV sockets

0 1. Prepare the high voltage connectors and test plugs.

Fig. 16: Silicon oil on HV plugs Fig. 17: Silicon oil on HV plugs

Check to ensure that the connector is clean and inspect it for damage.

Apply oil (supplied with the part) to the entire plug surface (left figure, item 1). ¹ Use about half of the oil from the tube for both plugs.

Put oil into the new silicon insulator (item 2).

Install the silicon insulator part over the plugs (left figure, item 1) ¹ Ensure there is no air left in the silicon insulator.

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2. Prepare the high voltage connectors.

3. Tighten the HV plugs.

High voltage tests

0

Description of available HV tests.

Fig. 18: Silicon oil on HV plugs Fig. 19: HV sockets

Check that there is no air left in the silicon insulator.

Insert the O-ring onto the HV plug (item 1).

Put oil onto the silicon insulator (item 2).

Insert the HV plugs into the receptacles. ¹ Verify the position of the plugs (+ or -).

Install the O-ring into the HV socket as shown (right figure, arrow).

Hand-tighten the fastening rings.

Fig. 20: Tightening the HV plugs

Tighten the HV plugs using the special tightening tool (delivered with the system) with a torque of 25 Nm.

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HVC tube test

For high tension arcing or HV breakdown, the test utility HVC tube test is available in the “Tube/Generator” test tools platform. The HVC tube test lets you apply high tension to the HV circuit without tube current. No test plugs are used in this test. No radiation is released during the test procedures. This test is performed before an HVC plug test is started because if this test does not indicate an error, the HVC plug test does not indicate an error either.

Prerequisites

Test needs system in the stand-by status.

Performing the HVC tube test

1. Select Local Service > Test Tools > Tube/Generator 2. Select HVC tube.

3. Select voltage and repetitions. Follow the instructions in the dialog. 4. Click the hardware Start button at the control box.

The test runs for 80 s. The test is terminated automatically.

If the test fails, perform the HVC plug test described next to select which XRS part is defective.

HVC with plug test

For high tension arcing or HV breakdown, the primary test utility HVC plug test is available in the “Tube/Generator” test tools platform. The HVC plug test lets you apply high tension to the HV circuit without tube current and without a connected X-ray tube. This allows the HV circuit to be systematically reduced using test plugs to isolate a high tension error to either the Straton MX P tube, HV cable, or HV tank. No radiation is released during this test procedure.

Prerequisites

HV tank dummy plugs (normal type) > material number 16 21 791

HV sockets dummy plugs (mini type) > material number 10 093 700

NOTE The HVC plug test is only allowed with test plugs installed. Tests with the installed tube can result in misdiagnosis of errors. For a connected tube, use the HCV tube test.

Performing the HVC plug test

1. Follow the work steps followed to install the relevant test plugs in the HVT. a) Switch system to the COMP/ON status at the control box.

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b) Press service hardware switch S1 in PDC.

c) Remove the lower and open the upper front ring segment. Refer to (Open/close the upper front ring segment / p. 16)

d) Remove the plastic ring and the funnel.

e) Move the HV tank or the HV sockets to the 6 o‘clock position by hand. f) Disable gantry rotation with switch S301.

g) Remove the HV plugs from the HV tank or the HV sockets and install the correct test plugs.

¹ HVT receptacles: When installing the test or HV plugs, new silicon disks must be used.

h) Switch system on (S301 remains switched off).

¹ S301 has to be switched off because during Init the Rot FW searches for an index pulse. This behavior may result in a 360 degree rotation of the gan-try. In this case the removed HV cables may damage parts in the gangan-try. 2. Select Local Service > Test Tools > Tube/Generator.

3. Select HVC with plugs.

4. Click “Go” on the virtual user panel. Follow the instructions in the dialog. Important work steps are listed below:

5. Click the hardware Start button at the control box.

The test runs for 80 s. The test is terminated automatically. > If the test fails, follow the HV Troubleshooting Guides.

NOTE New silicon disks in the HVT must be used for the HV cable and test plugs before the plugs are installed into the compo-nents ( HVT).

6. Reinstall all parts removed/opened previously according the original configuration. ¹ Install the HV plugs at the HV sockets using new insulators. Tighten the HV plugs

with a torque of 25 Nm.

¹ Install the HV plugs at the HV tank using 2 new silicon disks. Hand tighten the HV plugs at the HV tank.

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Filament (FIL)

2.4

TSG filament

0

The filament function is tested during “INIT” (e.g COMP/ON > SYS/ON). After switching the gantry off/on, a self test of the D770 (FIL power) in XGR is performed as step 1. In step 2, a filament current is sent to the filament heating in XRT (X-ray tube), passing the filament transformer at XRT. If the self test fails, the error message CT_GSA/GRA_111 (XGR FIL Self test Error) is sent to the Eventlog.

Additionally a test utility “FIL” is available in the “Tube/Generator” test tools platform. During the “INIT” filament test, the involved D 700/D 770 board components in the XGR and the filament current to the XRT are tested (only in/out test). With the “FIL” test, the involved filament components and the filament regulation function are tested. So the “FIL” test is a more detailed test possibility.

Remark: Test can be used when the system is or is not in stand-by status.

Tab. 3 Filament test

Filament

0

Filament test

This test checks the principal filament function and the regulation of the filament circuit including the power board (FIL-Power) in the XGR box, the cable connection to the XRT, the filament transformer at XRT, and the filament heating in the tube itself. No radiation is generated during this test procedure.

Performing the filament test

1. Select Local Service > Test Tools > Tube/Generator. 2. Select FIL

3. Click GO and follow the instructions in the dialog. The test is terminated automatically.

Step Action

1

Switch gantry off/on using the control box (COMP/ON > SYS/ON) to perform an XGR INIT.

2

Check in the eventlog for the error message CT_GRA_20 or CT_GRB_20 (XGR FIL self test Error).

> if the error message was sent to the logbook during INIT > follow the Trou-bleshooting Guides given in the error message.

> if the error message was not sent to the logbook during INIT > continue with item 3.

3

Perform the “FIL” test function.

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Anode rotation (RAC)

2.5

TSG Anode Rotation (RAC)

0

Use this test function to verify the RAC function. There are different anode speed (Hz) selections possible. In the Troubleshooting Guide below, 160 Hz is selected, because this value is very stressful for the RAC function (Note: Do not use this selection in quick suc-cession to avoid overload).

Use the RAC extended test function to check the rotating anode revolution with respect to the time (acceleration). The following statements are possible:

No revolution > e.g rotating anode bearing defective, bad cable/plug connection, XGR...

Revolution in the medium revolution range is too low > e.g rotating anode motor defec-tive, XGR....

Upper revolution range not reachable > e.g rotating anode bearing defective, XGR... Note: The system should be in stand-by status for this test.

NOTE Anode rotation on a Staton MXP tube may not be started without a functioning and connected cooling circuit (e.g. for troubleshooting).

Tab. 4 Anode rotation (RAC) test

Step Action

1

Perform AnodeRot Frequency Local Service > Test Tools > Tube/Genera-tor > RAC and select 160 Hz

> if the RAC test fails > continue with item 2. > if the RAC test is ok > no further action.

2

Perform AnodeRot Frequency Local Service > Test Tools > Tube/Genera-tor and select the following RAC extended tests:

1. RAC anode movement test 2. RAC acceleration test 3. RAC maximum speed test

If test 1 fails > continue with item 3

If test 2 fails > continue with item 4

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3 Possible cause of error: no revolution

1. Check cable connection W604/W654 between XGR (X6) > XTA (X2) for bro-ken wire or bad contact.

2. Rotating anode motor defective > change XRT 3. XGR assembly defective > change XGR assembly.

4 Possible cause of error: revolution in the medium revolution range is too low 1. Rotating anode bearing defective > change XRT

2. XGR assembly defective > change XGR assembly. 5 Possible cause of error: upper revolution range not reachable

1. Rotating anode bearing defective > change XRT

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Single pulse test

2.6

Single pulse test

0

The single pulse test allows you to identify problems from the inverter assemblies up to the HV_Tank by triggering the inverters for a single pulse. Use the single pulse test after per-forming the TSG “High voltage” as a last step or if there is IMAX / UB MAX parameter infor-mation identified in an error message. Please use a memory oscilloscope to measure the output of the single pulse test.

Tab. 5 Single pulse test

Prerequisites

Memory oscilloscope

Step Action

1 Perform the single pulse test with normally connected tube.

¹ In addition to the given test result, check the UT_act value in the relevant test message in the Eventlog.

If UT_act parameter is E: 0 x 50, 0 x 02, 0 x 57, 0 x 1B, 0 x.. 0 x.. 0 x 00, > test was successful. No problem on inverter part.

f UT_act parameter is E: 0 x 50, 0 x 00, 0 x 4D, 0 x 09, 0 x.. 0 x.. 0 x 00, > test was not successful. Continue with item 2.

2 Perform the single pulse test with installed test plugs (#1621791) . Follow the dialog of the HVC plug test to install the test plugs

¹ In addition to the given test result, check the UT_act value in the relevant test message in the Eventlog.

If UT_act parameter is E: 0 x 50, 0 x 02, 0 x 57, 0 x 1B, 0 x.. 0 x.. 0 x 00, > test was successful > X-ray tube problem > exchange X-ray tube. f UT_act parameter is E: 0 x 50, 0 x 00, 0 x 4D, 0 x 09, 0 x.. 0 x.. 0 x 00, > test was not successful. Continue with item 3.

3 Compare the output diagram of the scope, the enclosed example diagrams and tolerance values shown below.

The time for a single pulse has to be 9 microseconds +/- 20%.

The current must have a peak value of +170A +/- 20% or -170A +/- 20% (alter-nating).

The tube voltage (UT_act) must have a peak value above 10kV.

¹ If the current is too high and/or the tube voltage is too low, check the MVT and HVT cabling (short circuit)

¹ If cabling is o.k. > replace parts in the following order: 1. MVT

2. HVT

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Performing the single pulse test

1. Move the XGS_Control assembly out of the PDC to get better access.

NOTE The power at the XGS control is 24 V and 5 V. Do not touch any parts on the XGS control. Connect the probes only as described below.

Use a 3 channel scope to perform the measurements below. If only a 2 channel scope is available, measure UT_act first and then I_load to get the necessary information.

2. Connect scope: - Channel 1

- XGS D701 > X211 UT_act (1 V = 20KV) -> see (1/Fig. 30 / p. 54)

- ANA_GND > XGS D700 > X87 ->see (6/Fig. 29 / p. 51)

- Adjust scope to 1V/div - Channel 2

- XGS D701 > X5 I_load (1 V = 50A) -> (1/Fig. 30 / p. 54)

- ANA_GND > XGS D700 > X87 -> see (6/Fig. 29 / p. 51)

- Adjust scope to 1V/div - Channel 4

- XGS D700 > X104 N_Start_inv -> see (12/Fig. 29 / p. 51)

- GND > XGS D700 > X112 -> see (12/Fig. 29 / p. 51)

- Adjust scope to 5 V/div 3. Adjust scope

- Time base 20 microseconds

- Trigger channel 4 (neg. slope, single)

4. Select Local Service > Test Tools > Tube/Generator 5. Select Unset all in the generator application.

6. Select Single Pulse 7. Select path and click GO

¹ The test is terminated automatically.

¹ The time for a single pulse has to be 9 microseconds +/- 20%.

¹ The current must have a peak value of +170A +/- 20% or -170A +/- 20% (alternat-ing).

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Single pulse test diagrams

0 The first 2 images are good examples; the last 2 images are error examples.

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Fig. 22: Single Pulse test diagram

Error examples

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Fig. 23: Single pulse test diagram

Short-circuit at inverter output

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MVT cable check

2.7 The MV cable check is used to test the correct connection of the MV cables. The MV cables are routed from PDC_A/B > slip ring > HVT_A/B. A wrong connection of MV cable_A and MV cable_B destroys some XRS parts. Especially after system installation, moving the sys-tem or changing slip ring parts, use this test to check that the connection of the MV cables is correct. If the test is passed the MV cable connection is correct. If the test is failed, it is mandatory to find the reason for the error.

Tab. 6 MV cable check

Performing the MVT cable check

0

1. Select Local Service > Test Tools > Tube/Generator 2. Select MVT cable check

3. Click GO and follow the instructions in the dialog. The test is terminated automatically. If the test fails > check the complete connection (PDC_A/B > slip ring > HVT_A/B) to find the problem.

Step Action

1 Perform MV cable check A and B path.

1. if the test passes ok > MV cable connections path A and path B are correct. 2. if the test fails > check the complete connection from PDC_A/B over the slip

ring to HVT_A/B. Use the actual function description as connection refer-ence.

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Arcing

2.8 The “Arcing” test is used from the lab to simulate arcings to verify that the FW/SW reaction due to arcings is correct. This test is not service-relevant.

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Check/adjust the tube oil pressure

2.9 The expansion vessel for the following measurement can be ordered from service stock. The part number for the vessel is: 10610161.

Allow the system to cool down for at least 10 minutes after the last scan. During the cooling time, the system must be switched on.

¹ Be aware that some system components may be very hot: the Straton tube, XTC, etc. may reach temperatures up to 130 degrees Celsius.

Wait until the tube and the cooling system have cooled down, then switch the system to COMP/ON status at the control box.

Switch off the gantry power using the S1 service button in PDC A.

Remove the gantry lower front ring segment.

Turn the gantry by hand until the Straton MX P tube (A or B) is in the 6 o‘clock position.

Secure against unintended rotation by using the front safety bolt.

Prepare the expansion vessel.

Open the quick coupling and disconnect the lower oil hose at the tube. Connect the oil hose from the expansion vessel to the empty quick coupling of the tube.

NOTE The pressure indicator at the expansion vessel shows the actual pressure in the oil circuit after the oil hose from the expansion vessel has been connected.

Fig. 25: Adjusting unit for expansion membrane

Install the adjustment handle (item 1) on the expansion vessel. - Press the button (item 2) to lock the thread rod on the membrane. - Hand-tighten the two screws of the adjustment thread rod (item 3).

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Check/adjust the oil pressure.

Fig. 26: Adjusting the tube pressure

Using the expansion handle (item 1), check the pressure at the pressure indi-cator (item 2) attached to the expansion vessel.

The correct pressure is 1.25 bar (+/- 0.05 bar) + the altitude correction factor taken from the following table.

¹ The goal of the pressure adjustment is to have the correct oil pres-sure for all operating conditions. If the prespres-sure is too low, arcs may occur during scans using the fastest anode rotation (e.g 160 Hz).

If the system is located at a higher altitude than sea level > add the following correction factor to the sea level pressure (see following table).

¹ For example, if the altitude is 1000 m -> the correction value is 0.12 bar.

Altitude [m] Difference [bar]

0 0.00 500 0.06 1000 0.12 1500 0.17 2000 0.22 2500 0.27 3000 0.31 3500 0.35 4000 0.39 4500 0.43 5000 0.47

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Unlock the safety bolt for gantry rotation.

Rotate the gantry by hand and check for unusual noise.

Close all covers opened before.

Switch on circuit breakers F2, F3, F5, F6, F7, and F11 in the PDC A and F2 in the PDC B.

¹ First switch the F2, F3, F5, F6 circuit breakers to the “0” position and then to the “1” position.

Switch the system to the SYSTEM/ON status at the control box.

If the pressure is not correct, adjust the membrane position using the adjust-ment handle (item 1).

After the pressure adjustment is finished, remove the expansion vessel (remove the oil quick-snap connection to the XRT).

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XRS hints

2.10 The following information is a summary of troubleshooting hints obtained through experi-ence.

Tab. 7 XRS hints

Step Action

1 XGS_PDC control assembly controls the complete switching-on process of most system parts. If this part becomes defective, the system components do not switch on. For troubleshooting and to ensure that the system compo-nents are switched on again (in case the control assembly is defective) per-form the follow work steps:

1. Check if all necessary voltages are available on XGS A/B > all green power supply LEDs on D790 must lit.

¹ If not > check/change XGS power supply.

2. Exchange the XGS_PDC control in the PDC in accordance with the

“Replacement of parts PDC” instructions. After replacement, use the guided tour to perform necessary Tune-up steps.

3. After replacement of the XGS_control, make sure that the dongle plug (including the 120-ohm CAN bus resistor) is installed at plug X3.

2 The inverter 1 and inverter 3 cable connections can be exchanged for trouble-shooting (both inverters are identical).

1. Remove inverter plug X23 (inverter 1) and X43 (inverter 3) from the XGS_PDC_Control backplane.

2. Install inverter plug X23 (inverter 1) in the X43 backplane plug and X43 (inverter 3) in X23 backplane plug on the XGS_PDC_Control backplane.

¹ If the error moves with the inverter > inverter is defective.

¹ If the error does not move with the inverter > inverter and inverter cable ok, check for other problems such as the cable connection, ground connection, or check for other error messages returned along with the inverter error message. Follow the instructions given in this message.

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Switching on status indicator of XGS

2.11 The seven-segment display on XGS board D700 (see image below) indicates the XGS sta-tus from system switch-on up to scan execute. This information can be used for trouble-shooting.

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Measuring points

2.12

Measuring points D700, D701, D702, D703

0

D700 measuring points

Fig. 29: D700 main board

Tab. 8 Oscillating current and dose act. measuring points

Tab. 9 Supply voltage measuring points

item signal name short name valid at

Description

measur-ing point 2 I_load_INV3 I_L_Inv3 XGS Oscillating current inverter 3 /

1 V = 50 A.

X77

2 Dose_act Dose_act XGR Actual dose value from fastlink 1 V = 13.107 value

* other similar values with D703 Fastlink control register selectable.

X76

item signal name short name valid at

Description

measur-ing point

3 P15V P15V XGS + 15-V Voltage supply X69

3 N15V N15V XGS -15-V Voltage supply X71

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Tab. 10 Ground measuring points

Tab. 11 HW interrupt for ignition pulses main inverter

NOTE The following measuring points are not implemented any more in newer systems. Nevertheless, the signals can still be measured on XGS D701 or D703 (see following pages).

Tab. 12 Tube voltage measuring points

3 VCC VCC XGS + 5-V Voltage supply X75

3 ANA_GND ANA_GND XGS analog ground X78

3 GND GND XGS ground X80

item signal name short name valid at

Description

measur-ing point

4 VCC VCC XGS + 5-V voltage power supply X75

4 ANA_GND ANA_GND XGS analog ground X78

item signal name short name valid at

Description

measur-ing point

5 S1 S1 XGS Ignition switch: HW interrupt of

the ignition pulses from the main inverter. Normal position is off - V162 must be off. No function in XGR. Normal posi-tion is off.

n.a.

item signal name short name valid at

Description

measur-ing point 6 P_UT act P_UT act XGR Positive tube voltage 1 V = 10

kV.

X81

6 N_UT act N_UT act XGR Negative tube voltage 1 V = 10 kV.

X83

6 UT_act UT_act XGR Tube voltage 1 V = 20 kV. X85

6 ANA_GND ANA_GND XGR analog ground X87

item signal name short name valid at

Description

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Tab. 13 IT act. measuring points

Tab. 14 Service switch

Tab. 15 IT act. measuring points

Tab. 16 FPGA voltage measuring points

Tab. 17 FPGA voltage measuring points

item signal name short name valid at

Description

measur-ing point

7 MA_meas_1 1 XGR IT_act measurement point 1

for ampere meter.

X61

7 MA_meas_2 IT_nom XGR IT_act measurement point 2 for ampere meter.

X59

Item Signal name

short name valid at

Description

Measur-ing point

8 S5 S5 XGR Switch must be on for IT_act

measurements using an ampere meter at measuring points X46, X48, X50, X59, X61. LED V202 is on the when the switch is activated. Normal position is off.

n.a.

item signal name short name valid at

Description

measur-ing point

9 IT_act IT_act XGR actual tube current X48

9 IT_nom IT_nom XGR Nominal tube current X50

9 ANA_GND ANA_GND XGR analog ground X46

item signal name short name valid at

Description

measur-ing point

10 VCC3.3 VCC3.3 XGS + 3.3-V I/O voltage FPGA X20

10 VCCINT VCCINT XGS + 1.5-V core voltage X44

item signal name short name valid at

Description

measur-ing point

11 S2 S2 XGS

XGR

Service switch: Switch has no function at this time. Neverthe-less, the switch must be in the off position. LED V6 must be off.

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Tab. 18 FPGA digital out

Tab. 19 FPGA digital out

D701 HVC board measuring points

Fig. 30: D701 measuring points

Item signal name short name valid at

Description

measur-ing point 12 N_Start_FIL

_INV

FIL XGR Start FIL inverter (low active). Can only be used in XGR.

X100

12 N_Start_RA C_INV

RAC XGR Start RAC inverter (low active). Can only be used in XGR.

X102

12 N_Start_HV _INV

INV XGS Start HV inverter (low active). X104

12 XC XC XGS XC signal (X-ray request) X106

12 XRAY_on X-ray XGS X-ray on signal (> 20 kV) X108

12 INV_Fault Inv_err XGS Summary error HV inverter Can only be used in XGS.

X110

12 GND GND XGS

XGR

Ground X112

Item signal name short name Description

measur-ing point 13 S3/S4 n.a. DIP switches for debug and

configura-tion of the FPGA - not for service use. n.a.

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Tab. 20 D701 HVC board measuring points

D702 FIL/RAC board

Tab. 21 D702 FIL measuring points

Item signal name short name valid at

Description

measur-ing point 1 UT_act UT_act XGS Actual tube voltage (from

rotat-ing part over fastlink) 1 V = 20 kV

X211

1 U_control U_con XGS Set value for kV regulator X216

1 I_load_act I_L_A XGS Actual oscillating current. 1 V = 50 A

X215

1 USTU USTU XGS Set value for kV regulator.

(Voltage control cycle). -5 V ... 0 V

X208

1 I_load_nom I_L_N XGS Nominal oscillating current. 1 V = 50 A

X207

1 UDC_act UZ_act XGS Actual intermediate circuit volt-age

X210

1 ANA_GND A_GND XGS analog ground X209

1 I_load I_load XGS Oscillating current. 1 V = 50 A X5

1 UT_nom UT_nom XGS Nominal tube voltage X204

1 ANA_GND A_GND XGS analog ground X206

1 USTI USTI XGS Set value for kV regulator

(cur-rent regulator circuit) 0 - 5 V

X203

1 Upre_con Upre XGS Set value for kV regulator (pre-liminary control) 0 - 5 V

X201

1 ANA_GND A_GND XGS analog ground X200

Item signal name short name valid at

Description

mea-suring point

D702 IT_act IT_act XGR actual tube current

max. 80 mA > 1 V = 100 mA <80 mA > 1 V = 80 mA

X18

D702 IF_act_1 IF_act_1 XGR actual filament heating 1 1 V = 0.273 A

X19

D702 IF_act_2 IF_act_2 XGR actual filament heating 2 1 V = 0.273 A

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Tab. 22 D702 RAC measuring points

D732 HV acquisition

HVT (high voltage tank) measuring points

Tab. 23 D732 HVT measuring points

D702 IF_act_3 IF_act_3 XGR actual filament heating 3 1 V = 0.273 A

X21

D702 ANA_GND A_GND XGR analog ground X17

board signal name short name valid at

Description

mea- sur-ing point D702 Test_DAC_1 DAC_1 XGS FPGA controlled debug DAC X10 D702 Test_DAC_2 DAC_2 XGS FPGA controlled debug DAC X11

D702 Res_sin sin XGS Resolver Sine Signal X12

D702 Res_cos cos XGS Resolver Cosine Signal X13

D702 RAC_P3 P3 XGS RAC Current Phase 3 (1 V =

40 A, Offset 2.5 V)

X14

D702 RAC_P2 P2 XGS RAC Current Phase 3 (1 V =

40 A, Offset 2.5 V)

X15

D702 RAC_P1 P1 XGS RAC Current Phase 3 (1 V =

40 A, Offset 2.5 V)

X16

D702 ANA_GND ANA_GND XGS analog ground X17

Item signal name short name valid at

Description

mea-suring point

D732 ANA_GND ANA_GND XGR analog ground X12

D732 P_UT_act P_UT_act XGR Tube voltage (pos.) (1 V = 10 kV)

X13

D732 N_UT_act N_UT_act XGR Tube voltage (neg.) (1 V = 10 kV)

X14 Item signal name short name valid

at

Description

mea-suring point

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LED´s on D700, D701, D702, D703

0 D700 LED status

Fig. 31: D700 measuring points and LED status

Tab. 24 D700 main board

board signal name valid at Description LEDs

D700 S_FIL_INV XGR Start FIL Inverter. Only used in XGR. V7 D700 S_RAC_INV XGR Start RAC Inverter. Only used in XGR. V8 D700 S_HV_INV XGR/XGS Start HV Inverter (at XGR signal

delayed due to transport (fastlink) delay. V9

D700 Cycle LED XGR/XGS FPGA Life Cycle LED V10

D700 XC XGR/XGS XC signal from system V11

D700 XRAY_On XGR/XGS X-ray On Signal (UT_act > 20 kV) V12

D700 INV_Err XGS Inverter Error V13

D700 FPGA_Err XGR/XGS Error Interrupt from FPGA V14

D700 MB 1000 mA XGR IT_act measurement range 1000 mA V15 D700 MB 100 mA XGR IT_act measurement range 100 mA

(amplification *10)

V16

D700 MB 25 mA XGR IT_act measurement range 25 mA (amplification *40)

V17

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D701 HVC board

Tab. 25 D701 main board

D702 FIL/RAC

Tab. 26 D702 main board

D700 STOP XGR/XGS Stop report loop V20

D700 UT_MAX XGR UT_act max. monitoring V21

D700 A XGR/XGS System A on System B off V23

D700 rot XGR/XGS rotating on, stationary off V24

board signal name valid at Description LEDs

D701 LED 1 n.a. is not in use V205

D701 LED 2 n.a. is not in use V206

D701 LED 3 n.a. is not in use V207

D701 LED 4 n.a. HVC Error Interrupt V208

board signal name valid at Description LEDs

D702 n.a. XGR FPGA out LED 0lim_1: Lim regulator

FIL_1 active

LED_0

D702 n.a. XGR FPGA out LED 1 20peak_1: Peak

regu-lator FIL_1 active

LED_1

D702 n.a. XGR FPGA out LED 2 20STOP_FIL/

STOP_RAC.

LED_2

D702 n.a. XGR FPGA out LED 3 20RAC_State_0. LED_3

D702 n.a. XGR FPGA out LED 4 20RAC_State_1 LED_4

D702 n.a. XGR FPGA out LED 5 20HALL_A LED_5

D702 n.a. XGR FPGA out LED 6 20HALL_B LED_6

D702 n.a. XGR FPGA out LED 7 20FIL_Error_Int /

RAC_Error_Int

LED_7

(59)

D703 XG board

Tab. 27 D703 main board

D704 dongle board

Tab. 28 D704 dongle board

D790 PDC board

Fig. 32: D790 signal LEDs

Item signal name valid at Description LEDs

D703 LinkErr XGS/XGR Link Error LED[5]

D703 LightErr XGS/XGR Light Error LED[4]

D703 CfgErr XGS/XGR Config Error (FPGA not programmed) LED[3]

D703 DefCfg XGR xray_and_not_door (XGR) LED[2]

D703 RunCfg XGS door closed (XGS) LED[1]

D703 Prg XGR door closed (XGR via Fastlink) LED[0]

D703 LED 1 XGS XGS_off (XGS indication when starting inverter)

LED[6]

D703 LED 2 XGS/XGR LifeCycle (flashes if FPGA is loaded) LED[7]

board signal name valid at Description LEDs

D704 VCC XGS/XGR Power supply 5 V V1

(60)

Tab. 29 D790 PDC board LEDs

board signal name valid at Description LEDs

D790 P_24V_SNT XGS P_24V from switched power supply (only used for relays, feedback, and fans)

V1

D790 VCC_SNT XGS VCC (5 V) from switched power supply V2

D790 VCC3.3 XGS FPGA IO voltage (3.3 V) V3

D790 LED morse XGS FPGA Lifecycle LED (if LED flashes > FPGA is loaded and is functioning)

V4

D790 P_15V_SNT XGS P_15V from switched power supply V5

D790 VCC_INT XGS FPGA core voltage (1.5 V) V6

D790 N_15V_SNT XGS N_15V from switched power supply V7

D790 P_15V_SNT

_AUX

XGS P_15V from switched power supply for inverter and fans.

(61)

Fig. 33: D790 PDC board signal LEDs

Tab. 30 D790 PDC board LEDs

board signal name valid at Description LEDs

D790 Main_Sw XGS PDC Main Switch Breaker Signal V105

D790 Cooling_CB XGS Cooling Unit Breaker Signal V117

D790 XGS XGS XGS Breaker Signal V116

D790 PHS_CB XGS PHS Circuit Breaker Signal V138

D790 Gan_Stat XGS Gantry Stationary Breaker Signal V144

D790 Gan_Rot XGS Gantry Rotating Breaker Signal V143

D790 UPS XGS UPS Breaker Signal V157

(62)

Tab. 31 D790 PDC board LEDs

Tab. 32 D790 PDC board LEDs

board signal name valid at Description LEDs

D790 Cooling XGS Cooling Unit Signal V106

D790 PHS XGS PHS Signal

LED off > trigger off and feedback off; LED on > trigger and feedback on; LED flashing > trigger and feedback different

V118

D790 L2_Perm_Ga ntry

XGS L2 Gantry Signal

LED off > trigger off and feedback off; LED on > trigger and feedback on; LED flashing > trigger and feedback different

V119

D790 Charg_XGR XGS Charging XGR Signal

LED off > trigger off and feedback off; LED on > trigger and feedback on; LED flashing > trigger and feedback different

V139

D790 PWR_XGR XGS Power XGR Signal

LED off > trigger off and feedback off; LED on > trigger and feedback on; LED flashing > trigger and feedback different

V145

D790 IRS XGS IRS Signal

LED off > trigger off and feedback off; LED on > trigger and feedback on; LED flashing > trigger and feedback different

V146

D790 ICS_Ether XGS ICS Signal

LED off > trigger off and feedback off; LED on > trigger and feedback on; LED flashing > trigger and feedback different

V160

D790 Charg_XGS XGS Charging XGS Signal

LED off > trigger off and feedback off; LED on > trigger and feedback on; LED flashing > trigger and feedback different

V159

board signal name valid at Description LEDs

D790 PWR_XGS XGS Power XGS

LED off > trigger off and feedback off; LED on > trigger and feedback on; LED flashing > trigger and feedback different

V107

D790 Temp_Trans XGS Temp Transformer Signal V120

Figure

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References

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Related subjects :
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