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TD Series Digital Solid State Soft Starter 48 - 1250A
6.2 Start-up Check List
•Supply voltage matches the rated supply voltage of the unit.
•Horsepower and current ratings of the motor and unit match or the
unit is higher rating.
•Initial ramp time and torque adjustments have been checked.
•Power lines are attached to the unit input terminals marked L1, L2 and L3.
•Motor leads are connected to the lower terminals marked T1, T2, and T3.
•Appropriate control power is applied and/or control connections
have been made.
•“Power on” light located on the front of the unit turns on when
control power is applied.
•Four seven-segment LED readouts are visible.
•The motor’s FLA has been programmed in function F001.
•The thermal overload is properly set. (Use F003 and F004 to set OL Class.)
•The motor area and equipment are clear of people and parts
before start-up.
6.3 Sequence of Operation
• Apply three phase power to the unit. The motor should run only when the start
command is applied.
• Apply control power and check that the “Power On” LED comes on.
• Verify that the motor’s FLA is correctly programmed (F001).
• Apply the start command. The motor should begin to accelerate.
• When the motor reaches full speed, the “At Speed” LED comes on.
• If the motor decelerates, or stops, during the acceleration period,
hit the stop button immediately and open the disconnect line.
If the unit does not follow this operational sequence please refer to Chapter 8 -
Troubleshooting.
Sequence of Operation