M&M
R
EFRIGERATION
I
NC
. B-1
APPENDIX B
Analog and Discrete I/O
The Analog and Discrete I/O section identifies the channel assignments for
sensor inputs, control outputs, and status inputs for various compressor
models.
Analog Inputs
Screw Compressor - Analog Inputs
TYPE CHANNEL NAME RANGE UNITS SENSOR TYPE
PRESS 1 SUCTION PRESS 0 : 200 PSIA 4 - 20 mA
PRESS 2 DISCHARGE PRESS 0 : 500 PSIG 4 - 20 mA
PRESS 3 OIL PRESS AFTER FILTER 0 : 500 PSIG 4 - 20 mA
PRESS 4 OIL PRESS BEFORE FILTER (All Others)
OIL PRESS ABOVE DISCHARGE (S Series)
0 : 500 PSIG 4 - 20 mA
WELL TEMP 5 DISCHARGE TEMP 32 : 302 DEGF 4 - 20 mA
WELL TEMP 6 OIL TEMP 32 : 302 DEGF 4 - 20 mA
WELL TEMP 7 OIL SUMP TEMP 32 : 302 DEGF 4 - 20 mA
TEMP 8 SUCTION TEMP -58 : 122 DEGF 4 - 20 mA
CURRENT 9 MOTOR CURRENT AMPS
CAPACITY 10 SLIDE VALVE (If applicable) 0 : 100 PCT 1-5 VDC
or
4 - 20 mA
WELL TEMP 11 PROCESS TEMP (Option) -58 : 122 DEGF 4 - 20 mA
12
13
VI 14 VI SLIDE STOP (Option) NULL
15
16
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