Installation Instructions

CPO-PC400-W/CPO-PC400-UW HVAC CONTROLLER
11 EN0B-0085 IE10 R0420
WARNING
Risk of electric shock or equipment damage!
• Do not connect more than one CPO-PC400-W/CPO-
PC400-UW controller to the same transformer.
• Do not connect a CPO-PC400-W/CPO-PC400-UW
controller and a PW M-Bus Adapter device to the same
transformer.
NOTE: If, alternatively, only a single transformer is avail-
able, when connecting a laptop, PC, web browser,
Excel Touch, or 3rd-party touch panel to the USB
2.0 Device Interface on the front of the CPO-
PC400-W/CPO-PC400-UW controller, use an
optical isolator for the USB connection or substi-
tute an M-Bus Miro-Master USB (Relay GmbH, D-
33106 Paderborn) for the PW M-Bus Adapter.
POWER SUPPLY
Transformers
Honeywell Transformers
A transformer can power the CPO-PC400-W/CPO-PC400-
UW. When determining total current consumption and
selecting the appropriate transformer, take into account
the number of connected modules, accessories, and field
devices.
NOTE: In Europe, system transformer(s) must be safety
isolating transformers according to IEC61558-2-
6. In the U.S.A. and Canada, NEC Class-2 trans-
formers must be used.
NOTE: Standard commercially available transformers can
also power the CPO-PC400-W/CPO-PC400-UW.
Switch Power Supply
To reduce overall current consumption, the CPO-PC400-
W/CPO-PC400-UW can be powered by a switch mode dc
power supply (rather than by a transformer).
Fusing
The choice of appropriate fusing is dependent upon the
given connection scenario (i.e., cable lengths and the use
of a primary and/or secondary transformer) and upon the
type of connected bus.
Power Supply of Field Devices
Field devices can be powered via the CPO-PC400-W/CPO-
PC400-UW.
When determining the total current consumption and
selecting the appropriate transformer, take into account
the number of connected modules, accessories, and field
device. Employing an additional transformer may be
necessary. The fusing (F2) of active field devices depends
upon loads in use. Single-sided (secondary-sided) earth
connection of the transformer is also possible. For more
information, see “Technical Literature” section on page 40.
Table 16. Honeywell CRT Series Transformers (Europe)
Part No. Primary Side Secondary Side
CRT 2 220/230 Vac 24 Vac, 50 VA, 2 A
CRT 6 220/230 Vac 24 Vac, 150 VA, 6 A
CRT 12 220/230 Vac 24 Vac, 300 VA, 12 A
Table 17. Honeywell 1450 Series Transformers
(N. America)
Part No.
14507287
Primary Side Secondary Side
-001 120 Vac 24 Vac, 50 VA
-002 120 Vac 2 x 24 Vac, 40 VA; 100 VA
from separate
transformer
-003 120 Vac 24 Vac, 100 VA; 24 Vdc;
600 mA
-004 240/220 Vac 24 Vac, 50 VA
-005 240/220 Vac 2 x 24 Vac, 40 VA; 100 VA
from separate
transformer
-006 240/220 Vac 24 Vac, 100 VA; 24 Vdc,
600 mA
Table 18. Fusing
Designation Description
F1 4 A, time-lag fuse (slo-blow), e.g.,
Littlefuse type 218.004.
F2 Depends upon field devices.
F3 (Field Bus,
only)
8 A, time-lag fuse.
F4 (CP-IO
Bus, only)
8 A, time-lag fuse or 12.5 A, timelag
fuse (see “Connection to a CP-IO Bus
Powered by the Separate Transformer”
section on page 30).
Table 17. Honeywell 1450 Series Transformers
(N. America) (Continued)
Part No.
14507287
Primary Side Secondary Side