Figure 25. Csm Remote I/O Modules A And B Field Wiring Schematic - McQuay MicroTech II Installation Manual

Figure 25. CSM Remote I/O Modules A and B Field Wiring Schematic

Lon Network to Chillers, CSM,
and/or other Remote I/O Modules
Cooling Load Pump 2 Status
(Flow Proving Device)
Cooling Load Pump 1 Status
(Flow Proving Device)
Lon Network to Chillers, CSM,
and/or other Remote I/O Modules
Cooling Load Pump 4 Status
(Flow Proving Device)
Cooling Load Pump 3 Status
(Flow Proving Device)
CD 251740501
IM 781-2
Remote A
1
Cooling Load Pumps 1 and 2
2
4
3
Lon Port
25
24
Inputs Outputs
29 (Y)
35 (Y)
DI 4 AO 2
0-10Vdc
28 (0)
34 (0)
27 (Y)
DI 3 32 (Y)
26 (0)
AO 1 0-10Vdc
31 (0)
8 (Y)
DI 2
7 (0)
Relay 5
NC 57
6 (Y)
DI 1
Com56
5 (0)
6A @ 230V
NO 58
NC 54
Relay 4
Com53
6A @ 230V
20 (Y)
NO 55
AI 4
19 (0)
17 (Y)
AI 3
I6 (0)
Relay 2
Com49
6A @ 230V
14 (Y)
NO 50
AI 2
I3 (0)
11 (Y)
AI 1
10 (0)
Relay 1
Com47
6A @ 230V
NO 48
Remote B
1
Cooling Load Pumps 3 and 4
2
4
3
Lon Port
25
24
Inputs Outputs
29 (Y)
35 (Y)
DI 4 AO 2
28 (0)
34 (0)
27 (Y)
DI 3 32 (Y)
26 (0)
AO 1
31 (0)
8 (Y)
DI 2
7 (0)
Relay 5 NC 57
6 (Y)
DI 1
Com56
5 (0)
6A @ 230V
NO 58
NC 54
Relay 4
Com53
6A @ 230V
20 (Y)
NO 55
AI 4
19 (0)
17 (Y)
AI 3
I6 (0)
Relay 2
Com49
6A @ 230V
14 (Y)
NO 50
AI 2
I3 (0)
11 (Y)
AI 1
10 (0)
Relay 1
Com47
6A @ 230V
NO 48
1. All remote I/O modules are optional. Their requirement is
Notes:
based on the number of pumps, valves and/or cooling
tower fans controlled by the CSM.
24 Vac
24 Vac power
0
50/60 Hz
Cooling Load Pump VFD Speed
Cooling Load Pump VFD Speed
Cooling Load Pump 2 Enable
Cooling Load Pump 1 Enable
24 Vac
24 Vac power
0
50/60 Hz
Cooling Load Pump VFD Speed
0-10Vdc
0-10Vdc
Cooling Load Pump VFD Speed
Cooling Load Pump 4 Enable
Cooling Load Pump 3 Enable
Page 35