General Disclaimer. One or more of the Following Statements may affect this Document

(1)

General Disclaimer

One or more of the Following Statements may affect this Document

This document has been reproduced from the best copy furnished by the

organizational source. It is being released in the interest of making available as

much information as possible.

This document may contain data, which exceeds the sheet parameters. It was

furnished in this condition by the organizational source and is the best copy

available.

This document may contain tone-on-tone or color graphs, charts and/or pictures,

which have been reproduced in black and white.

This document is paginated as submitted by the original source.

Portions of this document are not fully legible due to the historical nature of some

of the material. However, it is the best reproduction available from the original

submission.

(2)

DOE/ NASA CONTRACTOR REPORT

DOE/NASA CR-150581

OPERATIONS MANUAL: ON-S ITE MONITOR (OSH

A

), SOLAR

HEATING AND COOLING SYSTEMS

Prepared by

IBM Federal Systems Division

Space Systems Division

Huntsville, Alabama 35805

Under Contract NAS8-32036 with

National Aeronautics and Space Administration

George C. Marshall Space Flight Center, Alabama 35812

for the U. S. Department of Energy

f ^\^^ ^^

03?

i

^ a

C_ J

r v^^

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^

l^<« gt: yZ y^tic

► (NASA-CF-150541)

O'2EPATIO'3S ;'^"Ur1L:

0„ SIT?' MONATOR (OSM) , SOLe1F f?'?ATI"l + ANC C

O

OLING SYSTEMS

(

I

n "

Fe3eral

SysteTS ?iv.)

15 p HC r.02/'".F

A01 CSCL " )A

''78-

19651

0ncIas

_l

x,3/44 05133

U.S. Department of Energy

1t

Solai Energy

(3)

This report was prepared to document work sponsored by the

United States Government. Neither the United States nor its

agents the United States Department of Energy, the United

States National Aeronautics and Space Administration, nor any

federal employees, nor any of their contractors, subcontractors

or their employees, make any warranty, express or implied, or

assume any legal liability or responsibility for the accuracy,

completeness, or usefulness of any information, apparatus,

product or process disclosed, or represent that its use would

not infringe privately owned rights.

(4)

TECHNICAL REPORT ST ANDARD TITLE PAGE 1. REPORT NO. 2. GOVERNMENT ACCESSION NO. 3. RECIPIENT'S CATALOG N0,

DOE/NASA CR-150581

I 4. TITLE AND SUBTITLE

Operations manual: On Site Monitor (OSM), Solar Heating and

_

5 REPORT DATE

Octohe- 17, 1977

6 PERFORMING ORGANIZATION CODE

Cooling Systems

7. AUTHOR(S) 8. PERFORMING ORGANIZATION REPORT x

IBA1 No. '934365

10, WORK UNIT NO. 9. PERFORMING ORGANIZATION NAME AND ADDRESS

IBM Federal Svstems Division

11. CONTRACT OR GRANT NO.

Conti-ict NA S3-3203(;

Space Systems

Huntsville, Alabama 35805

_13,_{TYPE OF REPOR'• 9 PERIOD CCVERE)}

Contractor Report

12, SPONSORING AGENCY NAME AND ADDRESS

National Aeronautics and Space Administration

Washington, D. C.

20546

_14, _{SPONSORING AGENCY CODE}

15. SUPFLEMENTARY NOTES

This work was done under the technical management of AIr. Earle G. Harris, George C.

Marshall Space Flight Center.

IS. ABSTRACT

The On-Site Monitor (OSAI)is a portable device which, when connected to a Solar System

Site Data Acquisition Subsystem (SDAS), will allow readouts of clock and sensor data in voltage

or engineering units at instrumented solar heating and cooling sites.

This report gives an overview of the OSA1 and provides the op-ratin

g.

instructions for

proper operation of the unit.

I

1

17, KEY WORDS 18. DISTRIBUTION STATEMENT

Unclassified-[

T

nl i m ited

WILLIAM

I3ROOKSBANK, JR.

Alanager, Solar Heatinl; and Cooling Prjest Ofe

19. SECURITY CLASSIF. (o( this report) 20. SECURITY CLASSIF. (of this page) I II NO. OF PAVES 2. PRICE

Unclassified

15 NTIS

M1LSPC - Form 3292 (MMY1969)

For 4tlr by Nations) Technli• el In(onnrUOn Srnice. SpnnRfirld. \ rtKlm.1 221 61

I^

I

(5)

1 W

7934365

TABLE OF CONTENTS

Title Page

ABBREVIATIO`S . . . 1

1.0 INTRODUCTION . . . _ . . . 1

.-2.0 OPERATIONS OVERVIEW . . . 1

2.1 OSM LAYOUT . . . 5

2.2 CONTROLS MIM DISPLAYS . . . 7

2.3 DESCRIPTION OF OPERATION . . . 7

3.0 INITIAL INSPECTION . . . • . . • • • • • • 7

4.0 CABLE CONNECTIONS • . • • • • • • • • • • • • • • • 7 5.0 OSM OPERATION . . • . • • • • • • • • • • • • • • • 8

6.0 ERROR CONDITION . • • • • • • • • • • • • • • • • • 10

R

(6)

1934365

ABBREVIATIONS

ABB BTU CFM

CNT

DEG DEGF DT F FT FPM CPM I/O IPCL KFPM K/H KW LED LGLY MPH MV N/A OFST OSM PER

P/N

PROM RTC SCFM SDAS V VAC

i • _

--Abbreviations

British Thermal Unit Cubic Feet Per Minute Count (Bits)

Degrees (Azimuth) Degrees Fahrenheit

Differential Temperature Fahrenheit, Degrees Square Foot

Feet Per Minute Gallons Per Minute Input/Output

Instrumentation Program and Components List Thousand Feet Per Minute

Kilometers/Per Hour Kilowatt

Light Emitting Diode Langley

Miles Per Hour Millivolt Not Applicable Offset

On-Site Monitor Percent

Part Number

Programmable Read Only Mi Real Time Clock

Summarized Flow in Cubic Site Data Acquisition Sul Volt

Volts Alternating Curren,

(7)

7934365

1.0 INTRODUCTION

This manual gives an overview of the operation of the On-Site Monitor (OSM) and provides the operating instructions for properly operating the OSM. The latest revisions to this document are indicated by a line to the right of the changed

I

paragraph.

2.0 OPERATIONS OVERVIEW

The OSM is a portable device

which

can be easily connected to a Site Data

Acquisition Subsystem (SDAS) to allow readouts of clock and sensor data in voltage or engineering units at instrumented solar heating and cooling sites.

2.1 OSM LAYOUT

The OSM layout is shown in Figure 2-1 and the front panel layout is shown in Figure 2-2. The major components of the OSM include:

o A main housing assembly which includes the front and rear panel assemblies, chassis, card rage, and cable holder.

o A power supply assembly

0

The following card assemblies:

- Microprocessor card (P/`d 7932921) - PROM card (P/N 7932941)

- I/O card

WIT

7934041) - Backpanel

- Extender Cards (2)

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ORIGINAL

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The following cable assemblies:

- Display Cables (3) (P/N 7934035, 7934036, 7934037) - OSM/SDAS Interface Cable (P/N 7934034)

- Measurement Select Cables (3) (P/N 7934030, 7934031, 7934032)

Figure 2-3 gives a more detailed schematic of how the card and cable assemblies are plugged or connected into the OSM back panel and front panel.

4 2.2 CONTROLS A.N'D DISPLAYS

The front panel (Figure 2-2) includes three sets of displays and controls which allow three channels/measurements to be displayed simultaneously. There are three g ets of LED displays which provide three digit display with decimals and three corresponc:ing measurement select contrr_1 •: to select the channel, measurement type and measurement range to be displayed. The channel (0 to 99) is selected by the first and second switch from t:ie left, the measurement type (0 to 9) by the third switch from the left and the measurement range (0 to 9) by the fourth switch from M

the left. Table 2-1 gives the OSM measurement selection matrix for use in select-ing measurement data to be displayed. The measurement type is 0-9 on the left side of the chart and the measurement range is 0-9 listed at the top of the chart. For example, s setting of 510,3 on the measurement select control gives channel 45, the 0 indicates a temperature measurement, and the 3 indicates a measurement range of 30 0 to 45C F. The type 9 measurements include voltage, bit count, and real-time clock readings for test _ind raw data evaluation. All other measure-ment types are in the engineering units shown. The blank portions on the matrix

indicate that these type/range values are not presently programmed. A "Site Personalization Table" will be developed for each SDAS site to aid in the se-lection of channel, measurement, and range switches to aid data evaluation.

The power "ON/OFF" switch controls primary power to the OSM. The "S'-AN" switch has three positions or modes: "AUTO", "NULL" and ""L1NL'AL". The

"'XLL" position is the niddle switch position and is used while data is being

(12)

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7934365

I

evaluated or when no data updates are required. The "AUTO" position

automati-cally requests and displays updated data approximately once every two seconds. r The "MANUAL" position is a momentary position and is used to request one scan of

data which provides for storage of all SDAS data channels for leisurely analysis of the collected data frame.

2.3 DESCRIPTION OF OPERATION

Once the OSM is connected to the SDAS by attaching the OSM/SDAS interface cable to the SDAS ana powered on, data collection and display by the OSM operator is enabled. Activiation of the scan switch causes the SDAS to read all sensor channels and transmit the collected data to the OSM. In order to display the desired measure-ment now stored in the OSM, the operator next enters the assigned measuremeasure-ment number, the type of measurement (temperature, flow, etc.) and the measurement scale into the appropriate measurement select cont7ols. Display of any desired measurement collected in the same scan can be accomplished by selecting another charnel and the appropriate conversion formula. An updated scan will occur whenever the scan switch is ajain depressed to "MANUAL" and released or every two seconds when in the "AUTO" position.

3.0 INITIAL INSPECTION

Prior to applying prime power to the OSM, the OSM top cover should be removes by removing the two cover retainer screws. All internal cables and cards (See Figure 2-3) should be inspected to insure that they are secure and properly seated. The OSM/SDAS interface cable should be removed from the cable storage compartment anJ inserted into the cable holder slot on the rear panel. The top cover should then be replaced and secured.

4.0 CABLE CONt7ECTIONS

With the OSM power "0:7/OFF" switch in the "OFF" position, the OS`i three prong power cord should be connected to a standard 115 VAC outlet. The OSM/SDAS interface cable should then be securely conne^_ted to the .1106 37 pin connector on the SDAS.

(14)

• 7934365

5.0 OSM OPERATION

The following procedures will allow proper start-up and operation of the OSM:

o Place the power "ON/OFF" switch to the "ON" position.

• o Momentarily depress the "SCAN" switch to the "MANUAL" position.

o Place the SCAN switch to the AUTO position and select 98 with the "TYPE" and "RANGE" switches respectively using one of the three groups or %ieasurement select control switches. This will display the SDAS real-time clock reading. If the SDAS and OSM are operating properly, tie LED display value will increment (bv one) approximately every two seconds. It should be noted that the OSM program ignores the channel selected when formula code "98" is selected and that the real-time clock readings will not be updated during SDAS recorder operation, when the SDAS is in telephone communications contact with the CDPS, or while the "SCAN" switch is left in the "MILL" position.

'1te Instrumentation Program (IP) Document should be used to identify the

measurements, measurement ranges, scaling factors, and air flow cross-sectional

I

area in square feet for conversions to CFM. Scaling factors for the

measure-ment ranges and conversion to volts (X%91) or millivolts (%X90) listed in Table 2-1 are pre-programmed into the OSM. For an accurate representation of measure-ments with scaling factors not programmed into the OS*i, the operator should

calculate the engineerinf• units value using the following procedure.

o Set 01,7A display :._sect switches to XX93 (where XX is the channel

numbet of measurement to be read). This will cause the OSM to display the digital count value of the .;elected measurement.

o Use Table 5-1 to determine the conversion formula for the measure-ment parameter listed in the IP documeasure-ment for the selected channel.

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7034365

• Plug into the equation the scale factor or coefficient (C) from the IP document and the digital value (X) displayed on the OSM to determine the correct value in engineering units.

The "SCAN" switch should be placed in tl:e "AUTO" position to update and dis-play the selected parameters approximately once every two seconds. The "SCAN" switch should be momentarily depressed to the "MANUAL" position and released to the neutral position to obtain and store a scan of data (all channels). This feature allows correlating different measurement channels to a common interval of time. Therefore, any measurement sampled may be displayed by selecting the proper measurement select control setting.

6.0 ERROR CO`.DITIONS

The following gives an overview of possible error displays and the procedures to be followed for error correction.

r A display of -158.8 (Range Type or Formula Select Error) indicates that a non-programmed switch code selection has been made. Consult the "OSM Measurement Selection Matrix" for proper snitch settings. A display of -190.9 (OSM Buffer Overflow Error) or -191.9 (zero Bvtes Transfer Error) are indications that some error has o-,urred during transfer of SDAS data to OSM. k'iwn operating in "MANUAL SCAN", switch set-up should be reverified for valid selection and "Manual" scan action repeated. If error indication persists in "AUTO" scan, so:: fault exists between SDAS and OSM data transfers, and the IBM repre-sentative designated below should be contacted.

• If the OSM does not display proper readings or the real-time clock reading does not operate, and the inspection and operating procedures described in Sections 3.0, 4.0 and 5.0 have been properly ii.iplvmented, the following procedures should be taken:

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1. Assure that the SDAS is operating properly by monitoring tape write operations (the SDAS will write to tape approxi-mately once each half hour for a 48-channel SDAS).

2. Assure that the OSM/SDAS interface cable is properly attached to SDAS J106 connector.

3. Depress the "SCAN" switch to the "MANUAL" position and then lock into the "AUTO" position and monitor for incre-ments in real time clock value.

4. If SDAS clock readings still do not increment, remove power, disconnect cables and contact the following IFT representative to request maintenance assistance:

J. E. Sleigh

Telephone: (205) 837-4000, Ext. 2255

or

R. E. Day

Telephone: (205) 837-4000, Ext. 2250 {,