NE200/300 Series Drive User Manual
Chapter 6 Parameter description 129
F3.35 Synchronous motor braking
torque limit
Range：0.0～300.0%【150.0%】
This parameter is to set the synchronous motor braking torque
limitation. If the motor gets over-voltage fault during running, try to reduce
this parameter setting value.
F3.36 Synchronous motor flux
weakening mode
Range：0～1【0】
0：Flux weakening mode is invalid
1：Flux weakening mode is valid
F3.37 Max flux weaken current Range：0～100%【50%】
The actual running flux-weakening current is equal to the theoretical
flux-weakening current by flux-weakening gain. The larger this parameter,
the better of the motor’s dynamic performance. But too high value will cause
vibration. Normally set it to 50.
F3.38 Flux weaken regulation
proportional coefficient
Range：0～3000【1500】
F3.39 Flux weaken regulation
integration coefficient
Range：0～3000【1500】
Adjust the flux weaken output current automatically according to the
rotation speed, bus voltage and counter emf and so on. The larger
proportional integral coefficient, the quicker speed responding, it causes the
oscillation of motor while the motor works in flux weaken status.
F3.40 Synchronous motor low
speed Min. current
Range：0～100%【30%】
Set the synchronous motor’s minimum current when the motor is at low
speed. (The percentage of motor’s rated current). This function is used to
improve the load carrying performance at low frequency.
F3.41 Synchronous motor low
speed carrier frequency
Range：1.0～16.0KHz【2.0KHz】
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