Toshiba WX9 ASD Installation & Operation Manual page 137

F315
Search Inertia
Program Protection Retry/Restart
After a momentary power loss or the momentary loss of the ST-to-CC
connection, this parameter sets the time for the commanded torque to reach its
programmed setting during the automatic restart. This function is in effect so
long as the Retry/Restart feature is enabled at Auto Restart Selection (F301)
Settings:
0 — 0.5 Second (fast)
1 — 1.0 Second (standard)
2 — 1.5 Seconds
3 — 2.0 Seconds
4 — 2.5 Seconds
5 — 3.0 Seconds
6 — 3.5 Seconds
7 — 4.0 Seconds
8 — 4.5 Seconds
9 — 5.0 Seconds (slow)
Drooping Gain
Program Feedback Drooping Control
This parameter sets the effective 100% output torque level while operating in
the Drooping Control mode. This value is the upper torque limit of the motor
being driven by a given ASD while operating in the Drooping Control mode.
Drooping
Drooping Control, also called Load Share, is used to share the load among
two or more mechanically coupled motors. Unlike Stall, which reduces the
output frequency in order to limit the load once the load reaches a preset level,
Drooping can increase or decrease the V/f setting of a motor to maintain a
balance between the output torque levels of mechanically coupled motors.
Because of variances in gearboxes, sheaves, belts, motors, and because the
speed of the motor is constrained by the mechanical system, one motor may
experience more load than its counterpart and may become overloaded.
Drooping Control allows the overloaded motor to slow down, thus shedding
load and encouraging a lightly-loaded motor to pick up the slack. The goal of
Drooping Control is to have the same torque ratios for mechanically coupled
motors.
Speed at 0% Drooping Gain
Program Feedback Drooping Control
This parameter sets the motor speed when at the 0% output torque gain while
operating in the Drooping Control mode. This function determines the lowest
speed that Drooping will be in effect for motors that share the same load.
WX9 ASD Installation and Operation Manual
Direct Access Number — F315
Parameter Type — Selection List
Factory Default — 1.0
Changeable During Run — No
Units — Seconds
.
Direct Access Number — F320
Parameter Type — Numerical
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 100.0
Units — %
Direct Access Number — F321
Parameter Type — Numerical
Factory Default — 60.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 299.0
Units — Hz
F321
125