CPO-PC400-W/CPO-PC400-UW HVAC CONTROLLER
13
EN0B-0085 IE10 R0420
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.
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.
Table 19. RS485 Interfaces 1,2, and 3 Wiring Terminals
Specifications
Terminal
Type
Stripping
Length
Torque
Value
Max. Plug Gauge
Screw
(Type P1)
6mm
3.1 to
3.5 lb-in
(0.350
to 0.395
N-m)
28 to 14 AWG
(0.0804-2.075
mm
2
)
Push-in
(Type P1)
8mm
N/A
26 to 14 AWG
(0.1281-2.075
mm
2
)
Table 20. RS485 Interface 4 Wiring Terminals Specifica
-
tions
Terminal
Type
Stripping
Length
Torque
Value
Max. Plug Gauge
Screw
(Type J4)
7mm
5 to 7
lb-in
(0.564
to 0.790
N-m)
Cable without
ferrule: 0.2-2.5 mm
2
Cable with ferrule:
0.25-2.5 mm
2
Push-in
(Type J4)
10mm
N/A
Cable without
ferrule: 0.2-2.5 mm
2
Cable with ferrule:
0.25-2.5 mm
2
Table 21. Power Supply Wiring Terminals Specifications
Terminal
Type
Stripping
Length
Torque
Value
Max. Plug Gauge
Screw
(Type P2)
6mm
3.1 to
3.5 lb-in
(0.350
to 0.395
N-m)
28 to 14 AWG
(0.0804-2.075
mm
2
)
Push-in
(Type P2)
8mm
N/A
26 to 14 AWG
(0.1281-2.075
mm
2
)