TSC 800 TRANSFER SWITCH CONTROLLER
PM 049 REV 9 06/04/24 Thomson Technology
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NOTE: Moving FTS4 out of OFF will display “Resuming
Normal Operation” and the ATS will source the
appropriate supply.
NOTE: On return to Normal Service the Engine Start output
is inhibited (held up) for approximately 8 – 10 seconds.
Requesting another mode of operation during this time,
which requires the engine start contact to close, will be
ignored.
Auto: All automatic functions are enabled.
Engine Start: (Offload Test) An engine start signal will be initiated and will
remain on until the FTS4 is placed in another position. The
engine will start if the engine’s auto start controller is in the
”Auto” mode. If the primary source fails in this mode, and the
secondary source is within parameters, the TSC 800 will
initiate a transfer to the secondary source.
Test: (Onload Test) A primary source failure is simulated and an
engine start signal will be initiated. When the secondary
source is within normal limits, the TSC 800 will initiate a
transfer to the secondary source. The system will remain in
this state until the FTS4 is placed in another position or the
secondary supply fails. Upon a secondary supply failure, if
the primary supply is available, the TSC 800 will initiate a
transfer to the primary supply. The Utility Return time
sequence will be initiated when the Onload Test mode is
terminated. Once transfer is complete to the primary source
the engine cooldown time sequence will be initiated, on
expiry, the generator set will stop if no cooldown is included
in its design/programming.
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