Wiring - Honeywell UDC2300 Product Manual

2.6 Wiring

Electrical Considerations
The indicator is considered "rack and panel mounted equipment" per EN61010-1, Safety
Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use,
Part 1: General Requirements. Conformity with 72/23/EEC, the Low Voltage Directive
requires the user to provide adequate protection against a shock hazard. The user shall
install this indicator in an enclosure that limits OPERATOR access to the rear terminals
Mains Power Supply
This equipment is suitable for connection to 90 Vac 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), 1/2 A, 250 V fuse(s), or
circuit-breaker, as part of the installation. The switch or circuit-breaker shall be located in
close proximity to the indicator, within easy reach of the OPERATOR. The switch or
circuit-breaker shall be marked as the disconnecting device for the indicator.
Indicator Grounding
PROTECTIVE BONDING (grounding) of this indicator 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 indicator enclosure to a local ground, using a No. 12 (4 mm
conductor, is recommended.
Alarm Circuit Wiring
The insulation of wires connected to the Alarm terminals shall be rated for the highest
voltage involved. Extra Low Voltage (ELV) wiring (input, and low voltage 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
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.
Use Suppression Devices—For additional noise protection, you may want to add
suppression devices at the external source. Appropriate suppression devices are
commercially available.
For additional noise information, refer to Document #51-52-05-01, How to Apply Digital Instrumentation in
Severe Electrical Noise Environments.
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Installation
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