Auto Speed - Hitachi P1 Basic Instruction Manual

A UT O SPE E D
The Auto Speed feature will automa�cally increase the high speed frequency to the frequency value of UE-14 when the forward
driving torque % or current at the high speed frequency is less than the Auto Speed output torque % threshold set in UE-21. The
output current must not exceed the motor FLA and or the VFD FLA while in Auto Speed and the output torque must not exceed
150%. (Warning do not set the Auto Speed frequency above 90.0 Hz) Normal se�ng for UE-21 is 40
Use the table below to configure the Auto Speed feature for closed loop.
Enable Feature /
Auto Speed Output Torque Threshold
Auto Speed Frequency
Note – UE-14 & UE-21 are represented as a whole number, see example below to understand how to set the parameters.
Example1: 40% Torque / UE-21 = 40 (Do not set this value above 50)
Example2: 90.00 Hz / UE-14 = 9000 (Do not set this value above 9000)
Use the table below to configure the Auto Speed feature open loop. (With load brake)
Enable Feature /
Auto Speed Output Torque Threshold
Auto Speed Frequency
Note – UE-14 & UE-21 are represented as a whole number, see example below to understand how to set the parameters.
Example1: 45% of FLA / UE-21 = 450 (Do not set this value above 450)
Example2: 90.00 Hz / UE-14 = 9000 (Do not set this value above 9000
12/17/2018 Hitachi P1 Closed Loop Hoist Basic Instruc�on Manual Firmware V19 – V25
Func�on
Func�on
(Without load brake)
VFD Parameter
UE-21 ( 0 = disabled )
UE-21 > 0 = The Auto Speed torque threshold %
UE-14
VFD Parameter
UE-21 ( 0 = disabled )
UE-21 > 0 = The Auto Speed current threshold %
UE-14
15