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3... I
NTERFACE
M
ODULES
U
SING
T
HE
OMP-MODL
3-42
2-Wire Terminal Strip Connections:
The MLIM-4 module is provided with a 12 position terminal strip.
Each MLIM-4 input channel utilizes 3 of the 12 terminals (1-2-3, 4-5-
6, 7-8-9, 10-11-12). Connect the input signal to the first two of the
three input terminals (1-2, 4-5, 7-8, 10-11) on the terminal strip. A
wire jumper must then be installed from the second to the third
terminal (2-3, 5-6, 8-9, 11-12).
Refer to Chapter 6 for steps to generate a Terminal Strip Wiring
printout after construction of a Program Net for use in making field
wiring connections.
For long lead wire runs and in applications in electrically noisy
environments, it is recommended that twisted pair and/or shielded
wire be used. If shielded wire is used, the shield at the OMP-MODL
end should be connected to an external earth ground (Figure 3... -
28) or if available, a grounded Shield connection provided on
another type installed interface module (such as the MLIM-1).
3-Wire Configuration
The 3-wire configuration is used in applications where the lead wire effects
calculated as above will have a significant error inducing effect on the
resistance measurement. The 3-wire configuration requires two input
channels (A and B or C and D) to implement. From within the HyperNet
Window, double-clicking Channel A or C icons displays a dialog and allows
for selection of 2, 3, or 4-wire connection. When 3 -wire is selected, a
second corresponding icon (Channel B or D) is removed as this second
channel is required for the 3 -wire measurement.
3-Wire Compensation Theory:
With a 3-wire configuration, the resistance of one of the lead wires is
measured, doubled and then subtracted out of the measured total
element plus lead wire circuit resistance. The 3-wire configuration,
as the name implies, requires the use of three discrete wires from
the module terminal strip to the element. Two of the leads connect
to one common end of the element and the other lead connects to
the other end of the element. The 3-wire configuration provides
2
1
12
11
10
9
8
7
6
5
4
3
RTD Element
Cable Shield
Jumper
A
B
C
D
Connect Shield to an Earth Ground
ML125
Figure 3... -28; 2-Wire Configuration
3-Wire
Config
Содержание OMP-MODL
Страница 1: ......
Страница 9: ...1 INTRODUCTION USING THE MODULOGGER 1 7 13 ...
Страница 23: ...2 OMP MODL System Base Using the OMP MODL 2 14 NOTES ...
Страница 24: ...2 ModuLogger System Base Using the ModuLogger 2 1 ...
Страница 30: ...3 INTERFACE MODULES USING THE OMP MODL 3 6 NOTES ...
Страница 70: ...3 INTERFACE MODULES USING THE OMP MODL 3 46 NOTES ...
Страница 76: ...3 INTERFACE MODULES USING THE OMP MODL 3 52 NOTES ...
Страница 82: ...3 INTERFACE MODULES USING THE OMP MODL 3 58 NOTES ...
Страница 83: ...3 INTERFACE MODULES USING THE MODULOGGER 3 1 ...
Страница 105: ...5 HYPERCOMM COMMUNICATIONS USING THE OMP MODL 5 18 NOTES ...
Страница 106: ...5 HYPERCOMM COMMUNICATIONS USING THE MODULOGGER 5 1 ...
Страница 117: ...6 PCMCIA CARD CONFIGURATION AND USE USING THE MODULOGGER 6 1 ...
Страница 134: ...7 HYPERNET ICON BASED PROGRAMMING USING THE OMP MODL 7 17 NOTES ...
Страница 141: ...8 P P C D U OMP MODL ...
Страница 149: ...9 HYPERPLOT GRAPHIC DATA DISPLAY USING THE OMP MODL 9 8 ...
Страница 161: ...10 HYPERTRACK REAL TIME DATA DISPLAY USING THE OMP MODL 10 12 NOTES ...
Страница 162: ...10 HYPERTRACK REAL TIME DATA DISPLAY USING THE OMP MODL 10 1 ...
Страница 163: ...11 APPENDICES USING THE OMP MODL 11 1 11 APPENDICES ...
Страница 164: ...11 APPENDICES USING THE OMP MODL 11 2 NOTES ...
Страница 270: ...11 APPENDIX A MASTER ICON FILE REFERENCE USING THE OMP MODL 11 108 ...
Страница 276: ...11 APPENDIX C HYPERWARE FILE LISTING USING THE OMP MODL 11 114 NOTES ...
Страница 278: ...11 APPENDIX C HYPERWARE FILE LISTING USING THE OMP MODL 11 116 NOTES ...
Страница 279: ......
Страница 282: ...11 APPENDIX E CHANGING THE OMP MODL EPROM USING THE OMP MODL 11 120 NOTES ...
Страница 288: ...11 APPENDIX G HYPERNET THEORY OF OPERATION USING THE OMP MODL 11 126 NOTES ...
Страница 290: ...11 APPENDIX I RS 232 CABLE PORT AND ADAPTER USING THE OMP MODL 11 128 NOTES ...
Страница 297: ...11 APPENDIX K MODEM CONFIGURATION USING THE OMP MODL 11 135 ...