McQuay IM 743 Installation Manual

IM 781-2 Page 37
Figure 27. CSM Remote I/O Modules E and F Field Wiring Schematic
Remote E
Inputs
27 (Y)
26 (0)
DI 3
20 (Y)
19 (0)
17 (Y)
I6 (0)
14 (Y)
I3 (0)
11 (Y)
10 (0)
AI 4
AI 3
AI 2
AI 1
29 (Y)
28 (0)
DI 4
Lon Port
8 (Y)
7 (0)
DI 2
Cooling Tower Fan Output 4
Cooling Tower Fan Output 3
Cooling Tower Fan Output 2
Outputs
NC 57
Com56
NO 58
NC 54
Com53
NO 55
Com49
NO 50
Com47
NO 48
Relay 5
Relay 4
Relay 2
Relay 1
4
3
Cooling Tower Fan Output 1
35 (Y)
34 (0)
AO 2
32 (Y)
31 (0)
AO 1
Cooling Tower Fan VFD
24 Vac
0
24 Vac power
50/60 Hz
6 (Y)
5 (0)
DI 1
Cooling Tower Bypass Valve
Notes: 1.
All remote I/O modules are optional. Their requirement is
based on the number pumps, valves and/or cooling tower
fans controlled by the CSM.
0
-10Vdc
0
-10Vdc
Tower VFD speed E4 for display only
Tower VFD speed E3 for display only
Tower VFD speed E2 for display only
Tower VFD speed E1 for display only
0-10Vdc
0-10Vdc
0-10Vdc
0-10Vdc
6A @ 230V
6A @ 230V
6A @ 230V
6A @ 230V
Cooling Tower Outputs 1 to 4
Lon Network to Chillers, CSM,
and/or other Remote I/O Modules
2
1
25
24
Remote F
Inputs
27 (Y)
26 (0)
DI 3
20 (Y)
19 (0)
17 (Y)
I6 (0)
14 (Y)
I3 (0)
11 (Y)
10 (0)
AI 4
AI 3
AI 2
AI 1
29 (Y)
28 (0)
DI 4
Lon Port
8 (Y)
7 (0)
DI 2
Cooling Tower Fan Output 8
Cooling Tower Fan Output 7
Cooling Tower Fan Output 6
Outputs
NC 57
Com56
NO 58
NC 54
Com53
NO 55
Com49
NO 50
Com47
NO 48
Relay 5
Relay 4
Relay 2
Relay 1
4
3
Cooling Tower Fan Output 5
35 (Y)
34 (0)
AO 2
32 (Y)
31 (0)
AO 1
Cooling Tower Fan VFD
24 Vac
0
24 Vac power
50/60 Hz
6 (Y)
5 (0)
DI 1
Cooling Tower Fan VFD
Lon Network to Chillers, CSM,
and/or other Remote I/O Modules
0
-10Vdc
0
-10Vdc
Tower VFD speed F4 for display only
Tower VFD speed F3 for display only
Tower VFD speed F2 for display only
Tower VFD speed F1 for display only
0-10Vdc
0-10Vdc
0-10Vdc
0-10Vdc
6A @ 230V
6A @ 230V
6A @ 230V
6A @ 230V
Cooling Tower Outputs 5 to 8
2
1
25
24
Cooling Tower Alarm # 8
Cooling Tower Alarm # 7
Cooling Tower Alarm # 5
Cooling Tower Alarm # 6
Cooling Tower Alarm # 4
Cooling Tower Alarm # 3
Cooling Tower Alarm # 1
Cooling Tower Alarm # 2
CD 251740501

McQuay IM 743 Specifications

General

Brand	McQuay
Model	IM 743
Category	Controller
Language	English