QUANTUM™ HD COMPRESSOR CONTROL PANEL
MAINTENANCE
090.040-M (MAR 12)
Page 106
This drawing appears here for reference purposes only, and is subject to change without notice. When installing, or servicing equipment,
always refer to the actual drawings that are included with the control panel for the latest information.
C
COMMUNICATIONS WIRING DIAGRAMS
TO CUSTOMER REMOTE COMPUTER/DCS
RS-485 COMMUNICATIONS
TO CUSTOMER REMOTE COMPUTER/DCS
RS-422 COMMUNICATIONS
1
2
3
4
BLK
CLR
COMPRESSOR #4
-RX/-TX
+RX/+TX
- Cable -
Belden #9841
#24 AWG or Equal
1 OR
2
COM-2 (P12)
COMPRESSOR #1
1
2
3
4
To Customer
Remote
Computer / DCS
System
-RX/-TX
BLK
CLR
COMPRESSOR #2
1
2
3
4
BLK
CLR
3 OR
4
COM-2 (TB2)
5
COM-2 (P11)
COMPRESSOR #3
BLK
CLR
1
2
3
4
3 OR
4
COM-2 (TB2)
5
5
6
7
8
BLK
CLR
Q1
OR
Q
2
COM-2 (P12)
GRN
BLK
BLK
RED
3 OR
4
COM-2 (TB2)
BLK
GRN
BLK
RED
1
2
3
4
1
2
3
4
BLK
-TX
+TX
- Cable -
Belden #9829
#24 AWG or E
ual
To Customer
Remote Computer
/ DCS System
-RX
+RX
5
6
7
8
COMPRESSOR #1
1
2
3
4
GRN
BLK
RED
Q5
COM-2 (P11)
BLK
GRN
BLK
RED
-TX
+TX
1
2
3
4
-RX
+RX
COMPRESSOR #2
COMPRESSOR #3
COMPRESSOR #4
5