CIPer
TM
MODEL 50 CONTROLLER
–
INSTALLATION AND COMMISSIONING INSTRUCTIONS
31-00233-02
52
Field Devices
Depending on the distance from the controller, field devices can be supplied with power by the same
transformer used for the Panel Bus I/O Modules, or by a separate transformer, using cables as specified in
Table 22.
Table 22. Power / communication cable specifications
Type of signal
Cross-sectional area
328 ft (100 m) (Figure 27) Power
supply via Panel Bus I/O Module
1312 ft (400 m) (Figure 26) Power
supply via a separate transformer
24 VAC power
16 AWG (1.5 mm
2
)
not allowed for >328 ft (100 m)
0…10
V signals
28
–
14 AWG (0.081
–
2.08 mm
2
)
For wiring field devices, see
section “
Powering Panel Bus I/O Models and Field Devices
".
Routing Cables to Field Devices
Route low-voltage signal and output cables to field devices separately from mains cables.
Table 23. Minimum distances to power mains cables
Cable
Minimum Distance
shielded
0.4
”
(10 mm)
unshielded
4
”
(100 mm)
All low-voltage signal and output cables should be regarded as communication circuits in accordance with
VDE 0100 and VDE 0800 (or NEC or other equivalent).
•
If the general guidelines for cable routing are observed, it is not necessary to shield field device signal and
power supply cables.
•
If for whatever reason, the routing guidelines cannot be observed, the field device signal and power supply
cables must be shielded.
–
Shielding of cables leading to field devices must be grounded only at one end.
–
Do not connect the shield to the CIPer Model 50 controller.
