31
Installation
If using AC power on the fault relay contacts, the relay wires should not be run within the same
conduit or cable tray as the DC power supplied to the TG5000 or the TG5000 junction box
connection. A separate wire entry on the device should be used for AC power connected to the
relays.
Exceeding the volt-amp rating of the relay can cause damage to the switching contacts.
Relay Connections to Inductive Loads
If connecting the relays to motors, fluorescent lighting, or other inductive loads, it is necessary to
suppress any sparks or inductive feedback that may occur at the relay contact. These effects may
render the unit inoperative.
One way to reduce these effects is to install a Quench arc
®
(Part Number 630413) across the load
being switched.
Fault Relay Wiring and Configurations
The Fault relay state in non-fault operating condition is Energized and terminal connections are
supplied for Normally Closed and Normally Open.
The energized fault relay setting provides an electrical path for fail-safe relay operation. In the
event of any failure, including loss of power, the relay will change to the de-energized state to
indicate a fault condition.
The Fault relay state cannot be reconfigured.
Relay Energy State and Terminal Connections
The TG5000 relays can be selected as energized or de-energized on the device. The default
configuration is the De- Energized state. The preferred relay energy state should be determined
before making connections. Tab. 9 shows the terminal connections by energy state and is
applicable to both relay 1 and relay 2.
Energy State NC (Normally Closed) NO (Normally Open)
De-Energized (default) Closed Open
Energized Open Closed
Tab. 9 Relay Terminal Connections by Energy State
3.5 Internal Power Supply
The optional internal power supply is 24 VDC. A 3-meter (9.84 foot) AC cord is included with this
option for easy power-up.
US
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