R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist TMU Motorized Trolley - Manual (Page 12)

LM TMU I&M MANUAL/EN/06.15.2009
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1.4 Operating Tests – TMU Variable Frequency Drive
m
CAUTION: Always be ready to press the emergency stop button.
y Check that the electrical connections and mechanical assemblies are all correct.
y Check that the operating parameters are as required.
y Check for loose electrical connections.
y Close the control enclosure cover.
y Check that the movements of the trolley are free from obstruction and do not cause any danger.
y Read the voltage of the main power supply and check that the Autotransformer taps match the readings.
y Turn on the power supply.
y Verify a voltage of 440 to 460v is being supplied from the autotransformer to the inverter (L1, L2, L3). If
needed, change taps on the autotransformer to obtain a voltage within this range.
y If the trolley moves to the wrong direction, interchange any two motor leads (U, V, or W). Changing input
leads (L1, L2, or L3) will not affect the shaft rotation direction. Ensure that the motion is in the proper
direction with respect to the push button being pressed.
y Operate at minimum speed for 5 to 10 seconds. Accelerate up to maximum speed and hold it for 5 to 10
seconds.
y Carry out the same operation in the opposite direction, first at minimum speed and then at maximum
speed.
y Check the operations of the left and right trolley travel limit switches. Limit switch is an optional
component.