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Advanced Motor Protection for

Variable Speed Operation

Manual

Security Information

1 Safety notes

2 Introduction

3 Advanced Motor Protection

Parameters

4 RTD Terminal Connections

5 Advanced Motor Protection

and RTD Protection

Functions

6 Alarms, Faults, and Logging

Messages

7 NXGpro AMP Alarms/Faults,

Protection Variables, and

RTD Status Screens

8 Troubleshooting

9 Spare Parts Data

10 Appendix

A

Service and support

11

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Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken. WARNING

indicates that death or severe personal injury may result if proper precautions are not taken. CAUTION

indicates that minor personal injury can result if proper precautions are not taken. NOTICE

indicates that property damage can result if proper precautions are not taken.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property damage.

Qualified Personnel

The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following: WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and

maintenance are required to ensure that the products operate safely and without any problems. The permissible ambient conditions must be complied with. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions.

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Security Information

1

1.1 Security information

Siemens provides products and solutions with industrial security functions that support the secure operation of plants, systems, machines and networks.

In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions constitute one element of such a concept. Customers are responsible for preventing unauthorized access to their plants, systems, machines and networks. Such systems, machines and components should only be connected to an enterprise network or the internet if and to the extent such a connection is necessary and only when appropriate security measures (e.g. firewalls and/or network segmentation) are in place.

For additional information on industrial security measures that may be implemented, please visit

https://www.siemens.com/industrialsecurity.

Siemens’ products and solutions undergo continuous development to make them more secure. Siemens strongly recommends that product updates are applied as soon as they are available and that the latest product versions are used. Use of product versions that are no longer supported, and failure to apply the latest updates may increase customer’s exposure to cyber threats.

To stay informed about product updates, subscribe to the Siemens Industrial Security RSS Feed under

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Safety notes

2

2.1 General Safety Information

Proper Use

SINAMICS Perfect Harmony™ GH180 medium voltage drives must always be installed in closed electrical operating areas. The drive is connected to the industrial network via a circuit-breaker or contactor that is electrically connected to the VFD control to enable the drive protection features.

The specific transport conditions must be observed when the equipment is transported. The equipment shall be assembled/installed and the separate cabinet units connected properly by cable and/or busbar in accordance with the assembly/installation instructions. The relevant instructions regarding correct storage, EMC-compliant installation, cabling, shielding and grounding and an adequate auxiliary power supply must be strictly observed. Fault-free operation is also dependent on careful operation and maintenance.

The power sections are designed for variable-speed drives use with synchronous and asynchronous motors. Operating modes, overload conditions, load cycles, and ambient conditions different to those described in this document are allowed only by special arrangement with the manufacturer.

Commissioning should only be carried out by trained service personnel in accordance with the commissioning instructions.

System components such as circuit-breaker, transformer, cables, cooling unit, motor, speed sensors, etc., must be matched to VFD operation. System configuration may only be carried out by an experienced system integrator.

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2.2 Observing the Five Safety Rules

There are five safety rules that must always be observed to assure not only personal safety, but to prevent material damage as well. Always obey safety-related labels located on the product itself and always read and understand each safety precaution prior to operating or working on the drive.

The five safety rules:

1. Disconnect the power applied to the system. 2. Protect against reapplication of power.

3. Make sure that the equipment is de-energized. 4. Apply grounding (earthing) means.

5. Cover or enclose adjacent components to secure all forms of hazardous energy. DANGER

Danger Due to High Voltages

High voltages cause death or serious injury if the safety instructions are not observed or if the equipment is handled incorrectly.

Potentially fatal voltages occur when this equipment is in operation which can remain present even after the VFD is switched off.

Ensure that only qualified and trained personnel carry out work on the equipment. Follow the five safety rules during each stage of the work.

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2.3 Safety Information and Warnings

DANGER Hazardous Voltage!

● Always follow the proper lock-out/tag-out procedures before beginning any maintenance or troubleshooting work on the VFD.

● Always follow standard safety precautions and local codes during installation of external wiring. The installation must follow wiring practices and insulation systems as specified in IEC 61800-5-1.

● Hazardous voltages may still exist within the VFD cabinets even when the disconnect switch is open (off) and the supply power is shut off.

● Only qualified individuals should install, operate, troubleshoot, and maintain this VFD. A qualified individual is "a person, who is familiar with the construction and operation of the equipment and the hazards involved."

● Always work with one hand, wear electrical safety gloves, wear insulated electrical hazard rated safety shoes, and safety goggles. Also, always work with another person present. ● Always use extreme caution when handling or measuring components that are inside the

enclosure. Be careful to prevent meter leads from shorting together or from touching other terminals.

● Use only instrumentation (e.g., meters, oscilloscopes, etc.) intended for high voltage measurements (that is, isolation is provided inside the instrument, not provided by isolating the chassis ground of the instrument).

● Never assume that switching off the input disconnector will remove all voltage from internal components. Voltage is still present on the terminals of the input disconnector. Also, there may be voltages present that are applied from other external sources.

● Never touch anything within the VFD cabinets until verifying that it is neither thermally hot nor electrically alive.

● Never remove safety shields (marked with a HIGH VOLTAGE sign) or attempt to measure points beneath the shields.

● Never operate the VFD with cabinet doors open. The only exception is the control cabinet. ● Never connect any grounded (i.e., non-isolated) meters or oscilloscopes to the system. ● Never connect or disconnect any meters, wiring, or printed circuit boards while the VFD is

energized.

● Never defeat the instrument’s grounding.

● When a system is configured with VFD bypass switchgear (e.g. contactors between line and motor, and VFD and motor), these switches should be interlocked so that the line voltage is never applied to the VFD output if the medium voltage input is removed from the VFD.

● When a system is configured with VFD pre-charge, medium voltage is present on the primary side of the input transformer and upstream device even though the MV contactor is not closed.

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WARNING Potential Arc Hazard

● Arcing can result in damage to property, serious injury and even death. ● The equipment has not been tested and rated for arc flash protection.

● Avoiding arc hazard risks is dependent upon proper installation and maintenance. ● Incorrectly applied equipment, incorrectly selected, connected or unconnected cables, or

the presence of foreign materials can cause arcing in the equipment.

● Follow all applicable precautionary rules and guidelines as used in working with medium voltage equipment.

● The equipment may be used only:

– for the applications defined as suitable in the technical description.

– in combination with equipment and components supplied by other manufacturers which have been approved and recommended by Siemens.

● Always follow the facility / installation site rules / guidelines for Personal Protectiive Equipment (PPE) based on the Arc Flash study of that facility.

Additional safety precautions and warnings appear throughout this manual. These important messages should be followed to reduce the risk of personal injury or equipment damage.

WARNING

Obey Rules to Avoid Risk of Death

● Always comply with local codes and requirements if disposal of failed components is necessary.

● Always ensure the use of an even and flat truck bed to transport the VFD system. Before unloading, be sure that the concrete pad is level for storage and permanent positioning. ● Always confirm proper tonnage ratings of cranes, cables, and hooks when lifting the VFD

system. Dropping the cabinet or lowering it too quickly could damage the unit.

● Never disconnect control power while medium voltage is energized. This could cause severe system overheating and/or damage.

● Never store flammable material in, on, or near the drive enclosure. This includes equipment drawings and manuals.

● Never use fork trucks to lift cabinets that are not equipped with lifting tubes. Be sure that the fork truck tines fit the lifting tubes properly and are the appropriate length.

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Introduction

3

3.1 Background

Unlike other motor protection management relays, the SINAMICS Advanced Motor Protection (AMP) is fully integrated into the drive itself, requiring no installation or mounting. Protection variables and RTD data used by the AMP are tested to ensure that the AMP is functioning properly and is ready for parameter setting before leaving the factory. To assure motor and process protection, it is necessary to define protection settings in such a way as to prevent motor and process damage, which can occur in various manners and conditions.

Today industrial equipment is designed to be operated for 20 years or longer. Medium voltage motors are exposed to environmental and mechanical stresses that, over time, could lead to motor degradation and malfunction. The monitoring and protection of such medium voltage motors is an essential element in the overall industrial process protection. These protection schemes are needed to avoid financial losses caused by unexpected process downtown. Medium voltage motors are operated either directly on line (DOL) or through variable frequency drives (VFDs). Thus, they require protection from the following conditions:

● input line events

● high temperatures, insulation and bearing failures ● conditions created by a change in a load

– overload – underload – imbalance – jamming

The advanced motor protection algorithms described in this manual can be used to protect systems from such events. In addition, some features can also be configured to detect and protect against undesirable process conditions.

The following chapters provide an overview of the function itself, followed by the function as implemented in the GH180 drive.

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Advanced Motor Protection Parameters

4

4.1 Standard Protections Block Diagram

Time Protections Standard Block Diagram

A standard block diagram is used for many definite time protections. The Motor Protection Relay function design for various time protections is shown in the figure Generalized Protection Function Block Diagram.

Low Pass Filter Protec!on Variable (Voltage, Current, etc.) Pickup Level > < Σ + -1=pickup 0=dropout Enable (1) Disable (0) Time Constant Pickup Time Delay (Counter) Dropout Time Delay (Counter) Count Enable Zero >= >= Output Output Pickup Time Delay Dropout Time Delay Count Enable Trip or Alarm Output Reset Reset Over/ Under Select Low Pass Filter Time Constant Reset 1-(Dropout Level) Latch Control 1 = latched Zero Pickup Timed Out Dropout Timed Out

Figure 4-1 Generalized Protection Function Block Diagram

Note

Refer to the appendix of this manual and IEEE C37.2 to obtain further information about device numbers and functions.

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The functions that operate in accordance with the standard architecture are: ● Device 12 - Fixed pickup overspeed

● Device 12 - Variable pickup overspeed ● Device 14 - Fixed pickup underspeed ● Device 14 - Variable pickup underspeed ● Device 37 - Fixed pickup undercurrent ● Device 37 - Variable pickup undercurrent ● Device 37P - Fixed pickup underpower

● Device 39 - Mechanical condition monitor - Fixed pickup torque pulsation

● Device 46_2 - Phase-balance current - Fixed pickup negative sequence overcurrent ● Device 49RTD - Machine thermal overload - Fixed pickup RTD protection

● Device 50 - Fixed pickup instantaneous overcurrent ● Device 51 - Fixed pickup inverse time overcurrent ● Device 55 - Fixed pickup maximum power factor ● Device 55 - Fixed pickup minimum power factor

● Device 59G - Fixed pickup definite minimum time zero sequence overvoltage ● Device 81 - Fixed pickup overfrequency

● Device 81 - Variable pickup overfrequency ● Device 81 - Fixed pickup underfrequency

● Device 81 - Fixed pickup high frequency rate of change

The standard block compares a protection variable to a reference which is referred to in the block diagram as the pickup level. To illustrate, for the fixed underspeed protection, the reference would be motor speed, and the pickup level would be the Fixed Underspeed Pickup Level (7218).

The comparator can be configured to make the block an "over" function (a trip or alarm can be generated when the protection variable is higher than the pickup level) or an "under" function (a trip or alarm can be generated when the protection variable is lower than the pickup level). Adjustable low pass filtering is accomplished on both the protection variable and the pickup level prior to the variables being applied to the greater than or less than comparator function. A true state (logic one) at the output of the comparator indicates that a pickup is occurring and that a trip or alarm may result. The pickup condition modifies the threshold of the comparator with a programmable amount of hysteresis to avoid excessive toggling due to noise in the reference or protection variable. The amount of hysteresis is determined as a percentage of the pickup level by the adjustable parameter referred to as the dropout level.

The block uses two counters to control the generation of an alarm or trip output. The output can be used as a trip signal or as an alarm signal where the alarm can be set to a latched mode or an unlatched mode. The two counters are the pickup time delay counter and the dropout time delay counter. The pickup time delay counter is used to delay the time between a pickup and the generation of a trip or alarm signal. The pickup time delay is a programmable parameter that can be adjusted over a range that depends on the particular protection variable being used.The 4.1 Standard Protections Block Diagram

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dropout time delay counter is used to delay the reset of the pickup timer if the protection variable changes such as to cause the pickup signal to return to a false (logic zero) condition.

In the simplest case of operation, the protection variable exceeds the pickup level and remains there. The pickup time delay counter would start counting until the value of the counter exceeds the "pickup time delay" and a trip or alarm would be generated. The dropout time delay counter has no involvement in this simplest type of operation. This case is shown in the top line of figure Various Pickup and Dropout Time Delay Counter Various Examples of Operation for the cases of latched and unlatched operation.

Figure 4-2 Various Pickup and Dropout Time Delay Counter Examples of Operation

The dropout time delay counter is used to reset the pickup time delay counter when the pickup condition disappears. The second line of Various Pickup and Dropout Time Delay Counter Examples of Operation shows the case where the pickup signal goes to zero for a time greater than the value of the dropout time delay. The dropout time delay is a programmable parameter that is shown in figure Generalized Protection Function Block Diagram. The dropout time delay counter counts up once the pickup signal becomes false and resets the pickup time delay

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The bottom two rows of the second figure shown show more complex behaviors involving shorter time variations of the pickup signal.

Boolean Logic equations for the counters are Pickup Counter

● Count = /Pickup timed out * enabled * pickup ● Reset = Reset (ext) + Dropout timed out Dropout Counter

● Count = /(/Pickup * /Pickup timer) * (/Pickup timed out + /Latch

control * Pickup timed out)

● Reset = /(Dropout timed out + /Dropout) * (Pickup timed out * Latch

control) + Reset (ext)

where:

/ indicates a logical inversion (not) + indicates a logical OR

* indicates a logical AND Fixed Pickup Protections

Fixed pickup protection functions allow a single pickup level to be programmed that remains a constant over the entire operating speed range of the drive.

Example: For fixed pickup overspeed protection, when the speed of the machine exceeds the programmed pickup level then the logic of the standard block diagram starts the pickup timer. If the pickup condition persists for longer than the programmed time then a trip or alarm will occur.

The pickup level is independent of the speed setting (speed demand) of the drive. Demand Dependency for Variable Pickup Protections

Variable pickup protection functions allow a pickup level to be programmed as a function of the commanded speed of the drive (speed demand). The pickup levels are entered as a set of 20 points starting from 0% demand to 190% demand setting. Linear interpolation is used between the points.

Example: If a 10% overspeed pickup is set at 0% demand and a 20% overspeed pickup is set at 10% demand, the effective pickup level at 5% demand will be 15%. The pickup level will remain constant at the 190% demand setting for demand settings in excess of 190%. If the 190% demand setting pickup level is set to 210%, the pickup level at 200% demand will also be 210%. See Figure Variable Pickup Undercurrent.

To further illustrate, assume that the variable pickup undercurrent function is being used; and the pickup levels are set to the values shown in column 2 of Table "Pickup Level Settings for Level Settings for Variable Undercurrent Protection Example".

Table 4-1 Pickup Level Settings for Variable Undercurrent Protection Example

Speed Demand (%) Undercurrent Pickup Level (%)

0 10

10 10

20 10

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Speed Demand (%) Undercurrent Pickup Level (%) 30 10 40 20 50 30 60 40 70 50 70 55 90 60 100 75 110 75 120 75 130 75 140 75 150 75 160 75 170 75 180 75 190 60

The resulting speed demand dependent pickup levels as shown in the figure titled "Variable Pickup Undercurrent Graph " shown below.

Variable Pickup Undercurrent

Speed Demand Pickup Level Undercurrent (%) (%) 250 200 150 100 50 0 80 70 60 50 40 30 20 10 0

Figure 4-3 Variable Pickup Under Current Graph

Thermal Overload

The thermal overload protection functions use a thermodynamic model of the machine to predict the total amount of thermal capacity (basically margin to maximum temperature) that has been used as the machine temperature increases. A value of 100% thermal capacity used would imply that the machine is at the maximum allowable temperature. The thermal model

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temperature at maximum rated ambient temperature. There are also heating, cooling, and stopped thermal time constants that dynamically adjust the model to match how quickly the machine will heat up and cool down either when moving or when stopped.

A fixed thermal overload protection function and a variable thermal overload function are provided. The fixed thermal overload function allows the use of a fixed value (does not vary with the drive speed demand setting) of k-factor and the time constants. The variable thermal overload function allows the k-factor, the heating time constant, and the cooling time constant to be made a function of the speed demand setting. The parameters are programmed over a range of speed demand setting from 0 to 190% in the same way as the pickup parameters are set for the variable pickup level protection functions. The k-factor would be adjusted as a function of speed to account for changes in the machine losses as the electrical frequency changes. The time constants would be adjusted to account for changes in the heat transfer characteristics of the machine as the speed changes.

See also

Installation External Wiring (Page 27)

IEEE Device Numbers and Functions (Page 169) 4.1 Standard Protections Block Diagram

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4.2 Introduction

The next chapters of this manual provide a brief of description of each AMP device protection. Additional technical data, including keypad and tool parameter text, ID, units, and values are shown in table format which provideds the end-user with easy access to device specific data. Where applicable, block diagrams, equations, and curves are also provided.

AMP Hardware Block Diagram

To better understand advanced motor protection hardware provided with your drive, refer to the AMP Hardware Block Diagram. Along with the type of hardware, the input to the 4-channel and 8-channel RTDs, the PLC input, Ethernet Switch, RTD channels, and power are depicted.

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Ethernet

Power

8 Resistance Temperature Detectors

4 Resistance Temperature Detectors

+24V Power

Detector Module

Resistance Temperature

8 Channel

Module

Detector

Temperature

Resistance

4 Channel

Controller

Logic

Programmable

Switch

Ethernet

1200

-S7

Figure 4-4 AMP Hardware Block Diagram

Per-unit Values

All the AMP functions use per-unit values to set pickup and dropout levels as well as speed-based enables. In a per-unit system, engineering quantities (such as voltages or currents) are normalized to their rated or maximum values. The value of the resultant per-unit values is typically zero to one although the values can be and are often expressed in percentages. The AMP system uses percentage values to set per-unit quantities. Voltage, current, frequency, 4.2 Introduction

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power, torque, and speed are per-unit quantities in the AMP. Time, temperature, and power factor are not handled as per-unit quantities and are expressed in units of seconds and degrees Celsius or Fahrenheit, power factor does not have any associated units. For example, consider a 1 MW machine with a rated voltage of 4160 V, and a full load current of 162A with a rated speed of 1785 RPM that is designed to operate with 60 Hz power. This is a four-pole machine, so the synchronous speed of the machine is 1800 RPM. The relationship between the engineering units and per-unit quantities are shown in the table titled, "Per-unit Engineering Unit Quantities".

Table 4-2 Example of per-unit and engineering unit quantities

Quantity 1 Per Unit Value (100%)

Speed 1800 RPM

Power 1 MW

Current (positive or negative sequence) 162 ARMS

Torque 5350 N-m

Voltage (line-to-line, positive or negative sequence) 4160 VRMS Voltage (zero sequence) 2402 VRMS

Frequency 60 Hz

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4.3 Protection Function Enable Types

There are four types of enables used to control startup and disabling of the protection functions. They are: Startup Time, Minimum Speed Enable, Minimum Speed Reset, and Fixed Torque Pulsation Minimum Speed Enable.

The following paragraphs describe the operation of the various enables.

1. Startup Time is used to delay the startup of the protection function from the time that the run command is issued. Following startup, the protection function will remain disabled until the startup time has elapsed. Once the Startup Time has been met, the protection function will be enabled unless another startup function continues to disable the protection function. The startup time delay will be repeated if the drive is stopped and then started again.

2. Minimum Speed Enable is used to delay the startup of the protection function until the machine achieves a minimum speed. Once the speed of the machine exceeds the Minimum Speed Enable setting, the function is enabled and will remain enabled until the drive is stopped (stop command, trip, etc.) unless another startup function continues to disable the protection function (such as Startup Time). The function will remain enabled even if the speed is reduced below the Minimum Speed Enable setting once that setting has been exceeded for the first time. The Minimum Speed Enable is reset when the drive is stopped, and the minimum speed will have to be reached again if the drive is stopped and then started again.

3. Minimum Speed Reset is used to disable a protection function when the speed demand is less than a specified value. When the demand setting is below the Minimum Speed Reset setting, the protection function is reset. Any startup time delay or minimum speed enable will be reset and the conditions of those enables will have to be met before the protection function will be enabled again.

4. Fixed Torque Pulsation Minimum Speed Enable is a unique enable applicable only to the excessive torque pulsation protection function. The setting resets the protection when the motor speed is below the setting. This setting should be used to avoid trips due to conditions where low motor speed is likely to result in false trips due to the finite sampling window of the torque pulsation function.

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RTD Terminal Connections

5

5.1 Installation External Wiring

Installation External Wiring

Customer-supplied low-voltage control cables enter via access plates in the top or bottom of the VFD enclosure. Refer to the project drawings for access plate locations.

Customer-supplied Resistance Temperature Detector (RTD) extension wiring terminates to terminal block TB2RTD in the VFD enclosure. An example is shown below in figure RTD Termination Diagram. Refer to the project drawings for complete TB2RTD layout details.

9)',17(51$/:,5,1* (;7(51$/:,5,1* %<&86720(5 %<6,(0(16

7%57'

723/& 57'

Figure 5-1 RTD Termination Diagram (for internal and external wiring)

Note

Customer must loop-back (short) all unused RTD inputs. Doing so avoids interference pickup on unused channels which can couple into the channels that are being used. Ensure all unused RTD inputs are shorted to earth ground. Refer to figure Internal and External Wiring for Unused RTD inputs.

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Figure 5-2 Internal and External Wiring for Unused RTD Inputs

See also

Standard Protections Block Diagram (Page 17) 5.1 Installation External Wiring

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Advanced Motor Protection and RTD Protection

Functions

6

6.1 Top Level Menu and Submenus

The following tables contain the Advanced Motor Protection parameters. Refer to the NXGpro Control Manual (A5E33474566) to view the GH180 standard motor protection parameters. This menu item is located at the end of the menu for Drive Protections - "Drive Protect" (7) and follows menu "Thermal OT Rollback" (7170) in menu (7).

Note

Menu 7 is the top of the 7000 series Drive Protect parameters.

Parameter ID Unit Default Min Max Description Advanced Motor Protec‐

tion 7180 Sub-menu Advanced Motor Protection Features

Advanced Motor Protect Menu (7180) Parameters Parameter ID Unit Default Min Max Description

Temperature Units 7173 degree Celsius Temperature Units that apply to all temper‐ ature entries selectable by means of a drop-down menu:

● Celsius ● Fahrenheit

Fixed Over Speed 7181 Sub-menu Device 12 - Fixed Pickup Overspeed Variable Over Speed 7189 Sub-menu Device 12 - Variable Pickup Overspeed Fixed Under Speed 7217 Sub-menu Device 14 - Fixed Pickup Underspeed Variable Under Speed 7226 Sub-menu Device 14 - Variable Pickup Underspeed Fixed Under Current 7256 Sub-menu Device 37 - Fixed Pickup Undercurrent Variable Under Current 7266 Sub-menu Device 37 - Variable Pickup Undercurrent Fixed Under Power 7297 Sub-menu Device 37P - Fixed Pickup Underpower Fixed Torque Pulsation 7306 Sub-menu Device 39 - Mechanical Condition Monitor -

Fixed Pickup Torque Pulsation

Fixed NegSeq Over I 7316 Sub-menu Device 46_2 - Phase Balance Current - Fixed Pickup Negative Sequence Overcur‐ rent

Maximum Start Time 7325 Sub-menu Device 48 - Incomplete Sequence - Maxi‐ mum Start Time

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Advanced Motor Protect Menu (7180) Parameters Parameter ID Unit Default Min Max Description

Fixed Thermal Overload 7335 Sub-menu Device 49T - Machine Thermal Model - Fixed Parameter Thermal Overload Var. Thermal Overload 7352 Sub-menu Device 49T - Machine Thermal Model - Var‐

iable Thermal Overload

RTD Protection 7429 Sub-menu Device 49RTD - Machine Thermal Overload - Fixed Pickup RTD Protection

Fixed Inst. OverCurrent 7515 Sub-menu Device 50 – Fixed Pickup Instantaneous Overcurrent

Fixed ZeroSeq OverVolt 7524 Sub-menu Device 59G – Fixed Pickup Definite Mini‐ mum Time Zero Sequence Overvoltage InverseTime OverCurrent 7533 Sub-menu Device 51 – Fixed Pickup Inverse Time

Overcurrent

Inst. Zero Seq OverVolt 7563 Sub-menu Device 59G - Fixed Pickup Instantaneous Zero Sequence Overvoltage

Fixed Max Power Factor 7572 Sub-menu Device 55 - Fixed Pickup Maximum Power Factor

Fixed Min Power Factor 7581 Sub-menu Device 55 - Fixed Pickup Minimum Power Factor

Min Starting Interval 7590 Sub-menu Device 66 – Notching or jogging – Starts Per Hour

Max Cold Starts per hr 7593 Sub-menu Device 66 – Notching or jogging – Cold Starts Per Hour

Max Hot Starts per hr 7598 Sub-menu Device 66 – Notching or jogging – Hot Starts Per Hour

Min Therm Cap to Start 7603 Sub-menu Device 66 – Notching or jogging – Maximum Thermal Capacity Used to Start

Fixed Over Frequency 7606 Sub-menu Device 81 - Fixed Pickup Overfrequency Variable Over Frequency 7615 Sub-menu Device 81 - Variable Pickup Overfrequency Fixed Under Frequency 7645 Sub-menu Device 81 - Fixed Pickup Underfrequency Variable Underfreq 7654 Sub-menu Device 81 - Variable Pickup Underfrequency Fixed High-Freq Rate 7684 Sub-menu Device 81 - Fixed Pickup High Frequency

Rate of Change

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6.2 Device 12 - Fixed Pickup Overspeed

Overview

Fixed pickup overspeed is used to protect the motor and connected load against excessive speed. The fixed pickup overspeed function provides a single speed point setting that produces a trip or alarm condition when that speed is exceeded. The function can be enabled once a programmable time period has elapsed since the starting of the motor. The per-unit speed protection variable may be derived from a flux based Phase Locked Loop (PLL) or encoder. Note

Encoder Loss

Depending upon the value of parameter 1320 (encoder loss response), when a loss of the encoder occurs, the drive will either default to the phase locked loop to obtain motor speed information or the drive will stop.

Device 12 provides parameter settings as shown in table Advanced Motor Protection Menu - Fixed Pickup Over Speed.

Table 6-1 Advanced Motor Protection Menu - Fixed Pickup Over Speed (ID 7181) Keypad Parameter Text

Tool Parameter Text ID Units DefaultValue Minimum - Maximum Value Pickup Level

Fixed Overspeed Pickup Level 7182 % 110 0 - 200 Pickup Delay

Fixed Overspeed Pickup Delay 7183 sec 1 0 - 6000 Dropout Level

Fixed Overspeed Dropout Level 7184 % 2 0 - 50 Dropout Delay

Fixed Overspeed Dropout Delay 7185 sec 0.1 0 - 6000 Low Pass Time Constant

Fixed Overspeed Low Pass Time Con‐ stant

7186 msec 0 0 - 1000

Startup Time

Fixed Overspeed Delay from Startup 7187 sec 0 0 - 6000

Picklist ID Units Default

Value Values Enable State

Fixed Pickup Overspeed Enable State 7188 Disabled ● Disabled_{● Alarm} ● Latched/Alarm ● Trip

The maximum response time with zero delay (pickup counter=0) is 20 milliseconds. Fixed Pickup Overspeed is mutually exclusive with Variable Pickup Overspeed.

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Pickup Timed Out Dropout Timed Out Dropout Level Output Latching Control 1 = Latched Time Constant Reset Low Pass Filter Reset Reset Trip or Alarm Output Zero Count Enable Zero Output Dropout Time Delay Pickup Time Delay Output Count Enable Dropout Time Delay (Counter) Pickup Time Delay (Counter) Time Constant 1 = Enable 0 = Disable 1 = pickup 0 = dropout Motor Speed Pickup Level Low Pass Filter >= >= + -Σ >

Figure 6-1 Overspeed Protection Diagram

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6.3 Device 12 - Variable Pickup Overspeed

Overview

Variable pickup overspeed is used to protect the motor and connected load against excessive speed or to detect conditions under which the motor speed has risen in excess of the desired setpoint. The variable pickup overspeed function provides a curve of overspeed points as a function of the commanded motor speed. A trip or alarm condition occurs when that speed is exceeded. The function can be enabled once a programmable time period has elapsed since the starting of the motor. The per-unit speed protection variable may be derived from a flux based Phase Locked Loop (PLL) or encoder.

Note

Encoder Loss

Device 12 provides parameter status as shown in table Advanced Motor Protection Menu - Variable Pickup Over Speed.

Table 6-2 Advanced Motor Protection Menu - Variable Pickup Over Speed (ID 7189) Keypad Parameter Text

Tool Parameter Help Text ID Units Default Val‐ue Minimum - Maximum Value OverSpeed Curve

OverSpeed Curve 7190 Sub-menu

Pickup Delay

Variable Overspeed Pickup Delay 7211 sec 1 0 - 6000 Dropout Level

Variable Overspeed Dropout Level 7212 % 2 0 - 50 Dropout Delay

Variable Overspeed Dropout Delay 7213 sec 0.1 0 - 6000 Low Pass Time Constant

Variable Overspeed Low Pass Time Constant 7214 msec 0 0 - 1000 Startup Time

Variable Overspeed Delay from Startup 7215 sec 0 0 - 6000

Variable Pickup Overspeed Enable State 7216 Disabled ● Disabled_{● Alarm} ● LatchedAlarm ● Trip

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OverSpeed Curve Menu (7190)

Keypad Parameter Text

Tool Parameter Help Text ID Units DefaultValue Minimum - Maximum Value 0% Speed Pickup

Define Pickup Level in %Speed at 10% Demanded Speed

7191 % 10 0 - 250

10% Speed Pickup

7192 % 20 0 - 250

7193 % 30 0 - 250

Define Pickup Level in %Speed 40% Demanded Speed

7194 % 40 0 - 250

7195 % 50 0 - 250

7196 % 60 0 - 250

7197 % 70 0 - 250

7198 % 80 0 - 250

7199 % 90 0 - 250

7200 % 100 0 - 250

7201 % 110 0 - 250

Define Pickup Level in %Speed at-120% Demanded Speed

7202 % 120 0 - 250

7203 % 130 0 - 250

7204 % 140 0 - 250

(37)

Tool Parameter Help Text ID Units DefaultValue Minimum - Maximum Value 140% Speed Pickup

7205 % 150 0 - 250

7206 % 160 0 - 250

7207 % 170 0 - 250

7208 % 180 0 - 250

7209 % 190 0 - 250

7210 % 200 0 - 250

The maximum response time with zero delay (pickup counter=0) is 20 milliseconds. Variable Pickup Overspeed is mutually exclusive with Fixed Overspeed.

(38)

Pickup Timed Out Dropout Timed Out Dropout Level Output Latching Control 1 = Latched Time Constant Reset Low Pass Filter Reset Reset Trip or Alarm Output Zero Count Enable Zero Output Dropout Time Delay Pickup Time Delay Output Count Enable Dropout Time Delay (Counter) Pickup Time Delay (Counter) Time Constant 1 = Enable 0 = Disable 1 = pickup 0 = dropout Motor Speed Pickup Level Low Pass Filter >= >= + -Σ >

Figure 6-2 Overspeed Protection Diagram

(39)

6.4 Device 14 - Fixed Pickup Underspeed

Overview

Fixed pickup underspeed is used to protect the motor and connected load against operation at speeds below the desired speed. The fixed pickup underspeed function provides a single underspeed point setting that produces a trip or alarm condition when that speed falls below that value. The function offers a minimum speed enable that only allows activation of this function after the programmable minimum speed has been reached. Once the minimum speed has been reached, the function remains enabled regardless of speed until the drive stops. The per-unit speed protection variable may be derived from a flux based Phase Locked Loop (PLL) or encoder.

Note

Encoder Loss

Note

Setting Fixed Pickup and Variable Pickup Underspeed Protection Parameters

When setting Fixed Pickup and Variable Pickup Underspeed Protection Parameters, ensure that settings are consistent with drive capabilities and with the settings of the accelerationramp settings, Refer to the relevant NXGpro Control Manual (A5E33474566) provided with your drive.

Device 14 provides parameter status as shown in table Advanced Motor Protection Menu - Fixed Pickup Underspeed.

Table 6-3 Advanced Motor Protection Menu - Fixed Pickup Underspeed Device (ID 7217) Keypad Parameter Text

Tool Parameter Text ID Units DefaultValue Minimum - Maximum Value Pickup Level

Fixed Underspeed Pickup Level 7218 % 5 0 - 100 Pickup Delay

Fixed Underspeed Pickup Delay

7219 sec 1 0 - 180 Dropout Level

Fixed Underspeed Dropout Level 7220 % 102 100 - 200 Dropout Delay

Fixed Underspeed Dropout Delay 7221 sec 0.1 0 - 180 Low Pass Time Constant

Fixed Underspeed Low Pass Time Constant 7222 msec 0 0 - 1000 Minimum Speed Enable 7223 % 50 0 - 100 Startup Time

Fixed Pickup Underspeed Delay from Startup 7224 sec 0 0 - 200

(40)

Fixed Underspeed w/ Min Speed Enable - Enable State

7225 0 Disabled ● Disabled ● Alarm ● LatchedAlarm ● Trip

The maximum response time with zero delay (pickup counter=0) is 20 milliseconds. Fixed Pickup Underspeed is mutually exclusive with Variable Pickup Underspeed.

Pickup Timed Out Dropout Timed Out 1 - Dropout Level Output Latching Control 1 = Latched Time Constant Reset Low Pass Filter Reset Reset Trip or Alarm Output Zero Count Enable Zero Output Dropout Time Delay Pickup Time Delay Output Count Enable Dropout Time Delay (Counter) Pickup Time Delay (Counter) Time Constant 1 = Enable 0 = Disable 1 = pickup 0 = dropout Motor Speed Pickup Level Low Pass Filter >= >= + -Σ <

Figure 6-3 Underspeed Protection Diagram

(41)

6.5 Device 14 - Variable Pickup Underspeed

Overview

Variable pickup underspeed is used to protect the motor and connected load against operation at lower speeds than desired or to detect conditions under which the motor speed has fallen below the desired setpoint due to problems with excessive load torque or torque production difficulties in the machine. The variable pickup underspeed function provides a curve of speed points as a function of the commanded motor speed. A trip or alarm condition occurs when that speed falls below the curve at a given speed setting. The function offers a minimum speed enable that only allows activation of this function after the programmable minimum speed has been reached. Once the minimum speed has been reached, the function remains enabled regardless of speed until the drive stops or the demand is set to a value below the minimum speed reset. The minimum speed reset is used to define a range of demand settings below which the function will remain in a reset condition. The per-unit speed protection variable may be derived from a flux based Phase Locked Loop (PLL) or encoder.

Note

Encoder Loss

Note

Setting Fixed Pickup and Variable Pickup Underspeed Protection Parameters

When setting Fixed Pickup and Variable Pickup Underspeed Protection Parameters, ensure that settings are consistent with drive capabilities and with the settings of the accelerationramp settings, Refer to the relevant NXGpro Control Manual NXGpro Control Manual

(A5E33474566) provided with your drive.

Device 14 provides parameter status as shown in table Advanced Motor Protection Menu - Variable Pickup Underspeed .

Table 6-4 Advanced Motor Protection Menu - Variable Pickup Underspeed (ID 7226) Keypad Parameter Text

Tool Parameter Help Text ID Units DefaultValue Minimum - Maximum Val‐ue UnderSpeed Curve

UnderSpeed Curve

7227 Sub-menu Pickup Delay

Variable Underspeed w/ Min Speed Enable Pickup Delay

7248 sec 1 0 - 6000

Dropout Level

Variable Underspeed w/ Min Speed Enable Drop‐ out Level

7249 % 102 100 - 200 Dropout Delay

Variable Underspeed w/ Min Speed Enable Drop‐ out Delay

7250 sec 0.1 0 - 600

(42)

Tool Parameter Help Text ID Units DefaultValue Minimum - Maximum Val‐ue Low Pass Time Constant

Variable Underspeed w/ Min Speed Enable Low Pass Time Constant

7251 msec 0 0 - 1000 Minimum Speed

Variable Underspeed w/ Min Speed Enable Point

7252 % 0 0 - 100

Minimum Speed Reset

Variable Underspeed w/ Min Speed Enable Speed Reset Point

7253 % 10 0 - 100

Startup Time

Variable Underspeed w/ Min Speed Enable from Startup

7254 sec 0 0 - 6000

Variable Underspeed Enable State

7255 Disabled ● Disabled ● Alarm ● LatchedAlarm ● Trip

UnderSpeed Curve Menu (7227)

Tool Parameter Help Text ID Units DefaultValue Minimum - Maximum Val‐ue 0% Speed Pickup

7228 % 0 0 - 200

7229 % 0 0 - 200

7230 % 10 0 -200

7231 % 20 0 - 200

7232 % 30 0 - 200

7233 % 40 0 - 200

7234 % 50 0 - 200

Function Manual A5E

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Advanced Motor Protection for

Variable Speed Operation

Manual

Security Information

1

Safety notes

2

Introduction

3

Advanced Motor Protection

Parameters

4

RTD Terminal Connections

5

Advanced Motor Protection

and RTD Protection

Functions

6

Alarms, Faults, and Logging

Messages

7

NXGpro AMP Alarms/Faults,

Protection Variables, and

RTD Status Screens

8

Troubleshooting

9

Spare Parts Data

10

Appendix

A

Service and support

11

Table of contents

Security Information

1

1.1

Security information

Safety notes

2

2.1

General Safety Information

2.2

Observing the Five Safety Rules

2.3

Safety Information and Warnings

Introduction

3

3.1

Background

Advanced Motor Protection Parameters

4

4.1

Standard Protections Block Diagram

Variable Pickup Undercurrent

4.2

Introduction

Ethernet

Power

8 Resistance Temperature Detectors

4 Resistance Temperature Detectors

+24V Power

Detector Module

Resistance Temperature

8 Channel

Module

Detector

Temperature

Resistance

4 Channel

Controller

Logic

Programmable

Switch

Ethernet

1200

-S7

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