Wiring; Electrical Considerations - Honeywell EDC 200 Series Product Manual

2. Installation

2.6. Wiring

2.6 Wiring

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
Each controller size supports two power supply types. One mode type is suitable for connection to
100 to 240 Vac power supply mains, the other is suitable for connection to 24 Vdc power supply
mains. There is a built-in 33V, 750mA self recovery fuse for 24 Vdc applications. 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 100-240 Vac applications. 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.
CAUTION
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.
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.
Use Suppression Devices—For additional noise protection, you may want to add suppression
devices at the external source. Appropriate suppression devices are commercially available.
ATTENTION
For additional noise information, refer to document number 51-52-05-01, How
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Applying 100-240 Vac to an instrument rated for 24 Vdc will severely
damage the instrument and is a fire and smoke hazard.
EDC201 / EDC202 / EDC203 Product Manual Revision 2.0
July 2015