Wiring; Electrical Considerations - Honeywell UDC2800 Product Manual

Chapter 3 - Installation

Wiring

41

Electrical Considerations

Line voltage wiring
This controller 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 controller in an enclosure
that limits OPERATOR access to the rear terminals.
Mains Power Supply
This equipment is suitable for connection to 90 to 264 Vac or to 24
Vac/dc 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 for 90-264 Vac applications; or 1 A, 125 V fuse or
circuit breaker for 24 Vac/dc applications, as part of the installation.
The switch or circuit-breaker shall be 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.
CAUTION: Applying 90-264 Vac to an instrument rated for 24
Vac/dc will severely damage the instrument and is a fire and
smoke hazard.
When applying power to multiple instruments, make certain that
sufficient current is supplied. Otherwise, the instruments may not
start up normally due to the voltage drop caused by the in-rush
current.
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