End Of Run Motor Brake Check - Hitachi P1 Basic Instruction Manual

E ND O F R UN M O TO R B R A KE C HE C K
The End of Run Motor Check will check for motor brake slip at the end of each li� cycle. Once the load float �mer has expired the
VFD will lockout the direc�onal commands. The VFD will then set the motor brake and wait un�l the Motor Brake Delay �mer has
expired. Once the Motor Brake Delay �mer has expired the VFD will start controllably reducing the motor torque to 0%. While the
VFD is controllably reducing the motor torque the VFD is checking for movement from the motor encoder.
If movement is detected during the End of Run Motor Brake Check the VFD will restore full torque to the motor and will turn on the
fault condi�on signal from output relay 16A. The forward direc�on and high speed commands will be locked out, and only the
reverse direc�on will be enabled. The VFD will wait un�l a reverse command is given and then will proceed to lower the load in low
speed while the reverse command is on. If the reverse command is removed the VFD will start the End of Run Motor Brake Check
again.
Once the load is safely on the ground and the End of Run Motor Brake Check passes then the VFD will restore all direc�onal and
speed commands and turn off the fault condi�on signal output relay 16A.
Enable Feature
Motor Brake Slip Max Allowable Pulse Count
12/17/2018 Hitachi P1 Closed Loop Hoist Basic Instruc�on Manual Firmware V19 – V25
* Closed Loop Hoist Only *
Func�on
Brake Torque Proving
UE-35 ( Please Contact Detroit Hoist )
VFD Parameter
UE-34 ( 0 = disabled / 1 = enabled )
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