Toshiba P9, Installation & Operation Manual

Page: 169 / 306

P9 ASD Installation and Operation Manual 159
Exciting Strengthening Coefficient
Program

Special

Special Parameters
This parameter is used to increase the magnetic flux of the motor at low-speed.
This feature is useful when increased torque at low speeds is required.
Direct Access Number — F415
Parameter Type — Numerical
Factory Default — 100
Changeable During Run — No
Minimum — 100
Maximum — 130
Units — %
Stall Prevention Factor 1
Program

Protection

Stall
This parameter is to be adjusted in the event that the motor stalls when operated
above the base frequency.
If a momentary heavy load occurs, the motor may stall before the load current
reaches the stall prevention level setting of
F601 .
A drop in the supply voltage may cause fluctuations of the load current or may
cause motor vibration. A gradual adjustment of this parameter may alleviate
this condition.
Start with a setting of 85 at these parameters and gradually adjust them from
there one at a time until the desired results are produced.
Adjustments to this parameter may increase the load current of the motor and
subsequently warrant an adjustment at the
Motor Overload Protection Level
setting.
Direct Access Number — F416
Parameter Type — Numerical
Factory Default — 100
Changeable During Run — No
Minimum — 10
Maximum — 250
F415 F416