Connecting Control Cables - Emerson Chilled Water Series User Manual

28 Chapter 3 Electric Installation
Figure 3-4 Amplified figure of power interface
 Note
The cable sizes should meet the local wiring rules.
Model
P1020
P1030
P1040
P1050
P2050
P2070

3.2.3 Connecting Control Cables

The control interfaces are located as shown in Figure 3-1, Figure 3-2 and Figure 3-3. The control interface is
amplified in Figure 3-6. The upper part of the terminal block is connected to the AC unit, while the lower part is
used as user control signal interfaces.
 Note
Before connecting the control cables, the wiring personnel must take antistatic measures.
N PE
N PE
L1 L2 L3
L1 L2 L3
N PE
Table 3-1 Maximum operation current of AC unit
Maximum operation current (A)
13.1
13.1
13.1
13.1
23.5
23.5
Connecting with Connecting
smoke sensor, 91# is with common
its common terminal alarm
Alarm output of
smoke sensor
Figure 3-6 Wiring of control interfaces
Liebert.PEX Chilled Water Series Air Conditioner User Manual
Cable clamp
Model
P2090
P2100
P3110
P3140
P3150
50,51,55 is defined
50,51,52 are defined
alarm terminals, 24# is
its common terminal
Short connecting line, no
short line if the remote
shut down is connected
Figure 3-5 Cable clamp
Maximum operation current (A)
23.5
23.5
28.2
28.2
28.2