TSC 800 TRANSFER SWITCH CONTROLLER
PM 049 REV 10 08/09/25 Thomson Technology
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DISABLED: The transfer switch will not commit to transfer after the engine
start delay has expired.“
ENABLED: The transfer switch will commit to transfer after the engine start
delay has expired.“ Selecting the “ENABLED” mode will prevent numerous
engine starting and stopping sequences if the utility supply is continuously
fluctuating beyond the pre-set limits. The feature is automatically cancelled
after 5 minutes should the generator fails to start or can be manually cancelled
by placing the ATS Menu Mode in “OFF” and then back to Auto.
7.5.2. GENERATOR START DELAY
The generator (i.e. engine) start signal will be initiated following expiry of the start
delay timer. Select desired generator start delay time in seconds. The range of
setting is 0 to 60 seconds. If no delay is required, set this time delay to zero. NOTE:
The output relay is normally energized when the utility power is within limits and de-
energizes to start the generator.
7.5.3. GENERATOR WARMUP DELAY
A transfer to the generator supply will be initiated when the voltage and frequency are
within limits and upon expiry of the warm-up delay timer. Select desired generator
warm-up delay time in seconds. The range of settings is 0 to 3000 seconds. If no
delay is required, set this time delay to zero.
7.5.4. GENERATOR COOLDOWN DELAY
The generator (i.e. engine) cooldown period will be initiated once the load has
transferred from the generator supply. The engine start signal will be maintained until
expiry of the cooldown delay timer. Select desired generator cooldown delay time in
minutes. The range of settings is 0.0 to 50.0 minutes. If no delay is required, set this
time delay to zero. Cooldown time is posted in 1-second decrements when active.
7.5.5. PRE-TRANSFER DELAY (LDC)
The pre-transfer delay period will be initiated upon an impending transfer in either
direction from a powered-to-powered source. The pre-transfer output relay will
momentarily energize (as per the pre-transfer time setting) prior to a load transfer and
will stay energized until the post-transfer delay time commences. Select desired pre-
delay time in seconds. The range of settings is 0 to 300 seconds. If no delay is
required, set this time delay to zero.
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