TP-6714 4/1082 Section 5 Setup
Load Bank Control Active. The load bank control
output is a C form contact that can be used to apply a
load to the generator set during an unloaded exercise or
test. The load bank control output is active during each
unloaded test and unloaded exercise. See Figure 5-20.
The load bank control output closes or opens a contact
that can be used to signal the load bank controller to
operate. Connect the normally open or normally closed
output contact to the load bank controller as required for
proper operation. Refer to the connection instructions
provided by the load bank manufacturer.
If the Normal source is lost during an exercise period,
the load bank control output is deactivated to remove the
load bank and allow the transfer of the building load to
the emergency source.
Normal source lost?
6447
Start unloaded test or exercise
Generator set starts
Emergency (standby)
source available
Load bank control
output is active
End unloaded
exercise or test
Load bank control
output deactivated
Engine cooldown
Generator set stops
Load bank control
output deactivated
Transfer load to
emergency source
YES
NO
Load bank applied
Load bank removed
Load bank removed
Figure 5-20 Load Bank Control Sequence
5.12.5 User-Defined I/O Function
Descriptions
The controller can store a 19-character string
description for each of the 9 user controllable/monitored
I/Os. Use Monitor III software to enter descriptions.
Descriptions are not used by the controller and are only
available for reading and writing over Modbus.
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