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Direct Access Parameter Information
Q9 Plus ASD Install/Op Manual
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 oper-
ating in the Drooping Control mode.
Note: The maximum frequency output is not limited by the setting
of
F011
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 decrease or
increase 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
since the speed of the motor is constrained by the mechanical
system, one motor may experience more load than its counter-
part and may become overloaded. Drooping Control allows the
overloaded motor to slow down, thus shedding load and encour-
aging a lightly-loaded motor to pick up the slack. The goal of
Drooping Control is to have the same torque ratios for mechani-
cally coupled motors.
Direct Access Number —
F320
Parameter Type — Numerical
Factory Default — 0.0
Changeable During Run — Yes
Minimum — 0.0
Maximum — 100.0
Units — %
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.
Direct Access Number —
F321
Parameter Type — Numerical
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — (ASD-Dependent)
Units — Hz
Speed at F320 Drooping Gain
Program Feedback Drooping Control
This parameter sets the motor speed when at the 100% output
torque gain while operating in the Drooping Control mode. This
function determines the speed of the individual motors at the
100% Drooping Gain setting for motors that share the same load.
Direct Access Number —
F322
Parameter Type — Numerical
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — (ASD-Dependent)
Units — Hz
F320 – F323
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