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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
Settings:
0 — 0.5 Sec. (fast)
1 — 1.0 Sec. (standard)
2 — 1.5 Sec.
3 — 2.0 Sec.
4 — 2.5 Sec.
5 — 3.0 Sec.
6 — 3.5 Sec.
7 — 4.0 Sec.
8 — 4.5 Sec.
9 — 5.0 Sec. (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.
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Direct Access Parameter Information
W7B ASD Installation & Operation Manual
Direct Access Number — F315
Parameter Type — Selection List
Factory Default — 1.0
Changeable During Run — No
Units — Seconds
.
F301
Direct Access Number — F320
Parameter Type — Numerical
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 100.00
Units — %
Direct Access Number — F321
Parameter Type — Numerical
Factory Default — 60.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 320.00
Units — Hz
F315-F321
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