Wiring - Honeywell UDC 2300 User Manual

2.5 Wiring

Electrical Considerations
he controller is considered "rack and panel mounted equipment" per EN61010-1,
afety Requirements for Electrical Equipment for Measurement, Control, and
aboratory Use, Part 1: General Requirements. Conformity with 72/23/EEC, the
ow Voltage Directive requires the user to provide adequate protection against a
hock hazard. The user shall install this controller in an enclosure that limits
PERATOR access to the rear terminals.
Mains Power Supply
This equipment is suitable for connection to 90 to 264 Vac, 50/60 Hz, power
supply mains. It is the user's responsibility to provide a switch and non-time
delay (North America), quick-acting, high breaking capacity, Type F (Europe),
1/2A, 250V fuse(s), or circuit-breaker, as part of the installation. The switch or
circuit breaker shall be located in close proximity to the controller, within easy
reach of the OPERATOR. The switch or circuit breaker shall be marked as the
disconnecting device for the controller.
Controller Grounding
PROTECTIVE BONDING (grounding) of this controller and the enclosure in
which it is installed shall be in accordance with National and Local electrical
codes. To minimize electrical noise and transients that may adversely affect the
system, supplementary bonding of the controller enclosure to a local ground,
using a No. 12 (4 mm
Control/Alarm Circuit Wiring
The insulation of wires connected to the Control/Alarm terminals shall be rated
for the highest voltage involved. Extra Low Voltage (ELV) wiring (input, current
output, and low voltage Control/Alarm circuits) shall be separated from
HAZARDOUS LIVE (>30 Vac, 42.4 Vpeak, or 60 Vdc) wiring per Permissible
Wiring Bundling, Table 2-5.
Electrical Noise Precautions
Electrical noise is composed of unabated electrical signals, which produce
undesirable effects in measurements and control circuits.
Digital equipment is especially sensitive to the effects of electrical noise. Your
controller has built-in circuits to reduce the effect of electrical noise from various
sources. If there is a need to further reduce these effects:
Separate External Wiring—Separate connecting wires into bundles
(See Permissible Wiring Bundling - Table 2-5) and route the individual
bundles through separate conduit metal trays.
4/00
2
) copper conductor, is recommended.
UDC2300 Universal Digital Controller User Manual
Installation
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