5
Transformer T5 supplies 24VAC used to power the main contactor. There are two versions of this transformer
for use on a 240 and 400V machines. The 240V transformer has two input connectors located about two inches
from the transformer, which allow it to be connected to either 180-220V or 221-240V. Users that have 220V-
240V RMS input power should use the connector labeled 221-240V, while users with 190-220V input power
should use the connector labeled 180-220V. Failure to use the correct input connector will result in either
overheating of the main contactor or failure to reliably engage the main contactor.
The 480V (option) T5 transformer has three input connectors, labeled 340-380V, 381-440V and 441-480V.
Users with 340-380V 50Hz power should use the 340-380V connector while users with 380V-440V 50Hz power
should use the 381-440V connector.
Important: Set the main circuit breaker to ON. Check for evidence of problems, such as the smell of
overheating components or smoke. If such problems are indicated, immediately set the main circuit breaker to
OFF and call the factory before proceeding.
After the power is on, measure the voltage across the bottom terminals on the main circuit breaker. It should be
the same as the measurements where the input power connects to the main breaker. If there are any problems,
check the wiring.
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