Start Of Run Motor Check - Hitachi P1 Basic Instruction Manual

ST AR T OF R UN M O TOR CHE C K
The Start of Run Motor Check is designed to check the motor torque at the beginning of each li�. On a power up cycle the VFD will
test the motor at the default torque test value. Once the first check has successfully completed the VFD will check the motor at the
torque required for the suspended load. If no load is suspended the VFD will check the motor torque at the minimum torque check
value.
During the Start of Run Motor Check the VFD will check to make sure the motor has produced sufficient torque before releasing the
motor brake.
If the motor fails to generate sufficient torque during the Start of Run Motor Check the VFD will trip with an E51 error. Please
contact Detroit Hoist technical department 1 (800) 521-9126.
Note – Once the Start of Run Motor Check is complete the motor brake will release and if there is a light load or no load suspended
the hoist may rotate slightly in the up direc�on due to a buildup of torque, this is normal.
Enable Feature
Default Torque Check Value
Motor Torque Check Time
Example: 1.00 seconds / UE-32 = 100
12/17/2018 Hitachi P1 Closed Loop Hoist Basic Instruc�on Manual Firmware V19 – V25
* Closed Loop Hoist Only *
Func�on VFD Parameter
UE-30 ( 0 = disabled / 1 = enabled )
UE-31
UE-32
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