Chapter 2: Pre-Installation Planning
External Switchgears
Use external contactors for the ON-OFF switching of electrical motors if loads does not respect relays rat-
ings. These contactors should be placed in a separate electrical distribution panel.
NOTE: An additional snubber has to be installed on coil contactor when using external switchgears.
Circuit Breaker
• AP\Cumberland recommends connecting only one device per Expansion Box output and to connect
each device on a separate circuit breaker.
• If your Expansion Box has no power-on switch, an external switch or circuit breaker must be
included in the building installation to interrupt power to L and N electric power lines. It must be in
close proximity to the equipment and within easy reach of the operator. It must be marked as the dis-
connecting device for the equipment.
Three-phase Power Supply
EDGE Variable Outputs are independent. One different source could be use per EDGE Variable Output.
With 3-phase power, ensure to use same phases to wire a specific EDGE Variable Output.
Probe Sensors
Do not install probes sensors near a low wall, heater, or fan.
Extending a Sensor
Always use twisted shielded cables of at least 18AWG (1mm2) to extend cabling to sensors and potenti-
ometers. Solder all joints and use a heat shrink when extending cables. Never extend a sensor more than
500 feet (150m).
Low Voltage Cables
Install the low voltage cables at least 12 inches (300mm) away from high voltage cables (120, 230 or 380
Vac or 24Vdc motor loads). Always use twisted shielded cables to wire low voltage devices. Always cross
high and low voltage cables at a 90° angles. This applies to the following low voltage devices:
• Sensor cables
• Potentiometer cables
• Communication cables
• 0-10V loads
• All other low voltage devices
Locking the Enclosure
Always lock the enclosure once the wiring is completed. Use the included bolt and nut or a padlock (not
included) to lock it.
Light Dimmer Outputs (4IN-6R-2LD)
Maximum Number of EDGE 4IN-6R-2LD Modules per Expansion Box
Only two EDGE 4IN-6R-2LD or two EDGE 4IN-6R-2LD Failsafe Modules are allowed per Expansion Box.
Both modules can be used in either the 6 Slot Expansion Box or the 3 Slot Expansion Box. In a 6 Slot
Expansion Box, EDGE 4IN-6R-2LD cards have to be installed into slot 1 and slot 6. In a 3 Slot Expansion
Box, EDGE 4IN-6R-2LD cards have to be installed into slot 1 and slot 3.
890–00687 EDGE 2
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