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WIRING AND SET-UP
General Safety Considerations
• When connecting the CPO-PC400-W/CPO-PC400-UW,
VDE, National Electric Code (NEC) or equivalent, and
any local regulations concerning grounding must be
observed.
• Only qualified electricians may carry out electrical work.
• The electrical connections must be made at the
terminals of the CPO-PC400-W/CPO-PC400-UW.
• For Europe, only: To comply with CE requirements,
devices with a voltage in the range of 50 to 1000 Vac or
75 to 1500 Vdc and which are not provided with a supply
cord and plug or with other means for disconnection
from the supply having a contact separation of at least 3
mm in all poles must have the means for disconnection
incorporated in the fixed wiring.
• Only copper conductors should be used for electrical
connection.
• Only electrical cables/wires with operating temperature
at least 75° C should be used for electrical connection.
WARNING
Risk of electric shock or equipment damage!
• Do not touch any live parts in the cabinet.
• Disconnect the power supply before making
connections to or removing connections from controller
terminals.
• Do not use spare terminals as wiring support points.
• Do not reconnect the power supply until you have
completed the power supply.
CAUTION
Observe the precautions for handling
electrostatic devices.
Wiring Terminals
The CPO-PC400-W/CPO-PC400-UW features both screw-
type terminals and push-in terminals.
Table 19. RS485 Interfaces 1,2, and 3 Wiring Terminals
Specifications
Terminal
Stripping
Type
Length
Screw
6mm
(Type P1)
Push-in
8mm
(Type P1)
Torque
Max. Plug Gauge
Value
3.1 to
28 to 14 AWG
3.5 lb-in
(0.0804-2.075
(0.350
2
mm
)
to 0.395
N-m)
N/A
26 to 14 AWG
(0.1281-2.075
2
mm
)
CPO-PC400-W/CPO-PC400-UW HVAC CONTROLLER
Table 20. RS485 Interface 4 Wiring Terminals Specifica-
Terminal
Stripping
Length
Type
Screw
7mm
(Type J4)
Push-in
10mm
(Type J4)
Table 21. Power Supply Wiring Terminals Specifications
Terminal
Stripping
Type
Length
Screw
6mm
(Type P2)
Push-in
8mm
(Type P2)
Terminals support both flexible and solid cables. Wires can
be equipped additionally with ferrules.
Connecting Power Supply
Connect the power supply to the power supply terminals of
the CPO-PC400-W/CPO-PC400-UW.
The factory default controller must be powered ON for a
minimum of 8 hrs for the first time to make the RTC
function as intended.
Earth Grounding
The CPO-PC400-W/CPO-PC400-UW comply with SELV
(Safety Extra-Low Voltage), so protective earth grounding
is not required. However, a functional earth grounding for
EMC is mandatory. For information, see "Appendix: Earth
Grounding" section on page 38.
13
tions
Torque
Max. Plug Gauge
Value
5 to 7
Cable without
lb-in
ferrule: 0.2-2.5 mm
(0.564
Cable with ferrule:
to 0.790
2
0.25-2.5 mm
N-m)
N/A
Cable without
ferrule: 0.2-2.5 mm
Cable with ferrule:
2
0.25-2.5 mm
Torque
Max. Plug Gauge
Value
3.1 to
28 to 14 AWG
3.5 lb-in
(0.0804-2.075
(0.350
2
mm
)
to 0.395
N-m)
N/A
26 to 14 AWG
(0.1281-2.075
2
mm
)
EN0B-0085 IE10 R0420
2
2
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