THOMSON TSC 7320 - Page 46

TSC 7320 Transfer Switch Controller
PM180 REV 0 23/02/10 Thomson Power Systems
42
Faulty Utility power switching device
auxiliary switch
Verify Utility side auxiliary switch (U-AUX) n/c contact
is closed and is low resistance when Utility switching
device is open. Verify TSC 7320 Digital input for Utility
Power Switching Device is Open has been activated
Transfer to generator source
without a power failure in the
utility source
A Load Test mode has been activated
locally or remotely
Check TSC 7320 load test LED status indicators
An Exercise Test mode has been activated
by the TSC 7320 scheduler
Check TSC 7320 status screen for Exercise Test is
active
Utility supply is not operating at correct
voltage or frequency levels.
Verify correct nominal levels the utility source should
be operating at and compare to TSC 7320 settings for
under/over voltage, voltage phase balance and
under/over frequency
TSC 7320 has incorrect utility voltage or
frequency settings for the ATS.
Re-Program TSC 7320 with correct settings as
required for voltage or frequency.
Utility power switching device has tripped
open due to an over current condition and
TSC 7320 “Mains Breaker Tripped” alarm
is displayed.
Determine cause of alarm and rectify before TSC
7320 is reset.
A loose control wire connection
Check all wiring connections in the ATS
Defective TSC 7320 controller
Verify TSC 7320 has 24VDC control power applied to
the battery power input (1,2), then press and hold the
lamp test button, and ensure all 12 LED lights on the
front panel light up
If defective, return to Thomson Power systems using
RMA process
Generator does not start or stop
when it should
Remote engine control panel is not set to
automatic mode
Verify remote engine control panel is set for automatic
operation
Engine start contact is wired incorrectly
from ATS to engine control panel
Verify engine start contact is wired correctly from ATS
to engine control panel
TSC 7320 Engine start contact connection
plug (30,31) is unplugged
Verify all TSC 7320 connectors are fully inserted
Defective TSC 7320 controller
Verify TSC 7320 has 24VDC control power applied to
the battery power input (1,2), then press and hold the
lamp test button, and ensure all 12 LED lights on the
front panel light up
If defective, return to Thomson Power systems using
RMA process
Engine Start and/or Cooldown timers may
be duplicated in both ATS control and
Engine control Panel
Disable timers in Engine control panel.
No time delay when there should
be
Incorrect TSC 7320 time delay setting
Verify TSC 7320 timer setting