Cumberland EDGE 890-00601, Installation And User Manual

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Chapter 2: Basic connections
• The fan outputs wanted in backup mode must be connected to a module with backup capabilities,
and with at least 1 inside temperature probe
• The inlet outputs and potentiometer feedback assigned to backup mode must be connected to a
module with backup capabilities, and with the corresponding inlet assigned probes
• The heater outputs wanted in backup mode must be connected to a module with backup capabil-
ities, and with the corresponding heater assigned probes
• The cooling outputs wanted in backup mode must be connected to a module with backup capabil-
ities, and with the corresponding cooling assigned temperature & RH probes
• It is recommended to connect static pressure sensors to the same plug-in module as the controlled
inlet machines on a board with backup capabilities to maintain static pressure control mode in
backup operation
• The inlet potentiometer must be connected to the same module as the inlet machine
• Do not connect both the opening and the closing of an inlet machine to normally closed (NC) con-
tacts of two different relays
• The open and close outputs of a given inlet must be on the same board
• Heaters must not be connected to the normally closed contact of a relay
• Both outputs on dual capacity heaters (low and high fire) must be connected to the same module
• Both outputs (0-10V and relay) on variable heaters with a starter signal must be connected to the
same module
• It is not possible to assign more than one variable output module to a 0-10V output (with their associ-
ated current sensor)
• Alarm relays related to temperature should be on the same module as at least 1 of the inside tem-
perature probes
• Alarm relays related to static pressure should be on the same module as static pressure sensors
• Water meter alarm relays used for water shut-off valves should be on the same module as water
meters
• Auger run time input and relay should be on same module
Power supply redundancy
The EDGE can provide added safety by allowing you to wire the power supplies in a redundant fashion.
In this manner, should one supply fail, the others can take over the load for it.
No supply redundancy
• Each Expansion Box must have its own PSU (power supply).
• Only one link is required between controllers
• Only one Expansion Box must supply the Main Controller
• The terminal ground (GND from 24VDC, Green color on diagram block) must be connected
between controllers
24 895-00693 EDGE