H9 ASD Installation and Operation Manual 161

Second Speed Loop Stabilization Coefficient

Program ⇒ Feedback ⇒ PG Settings
During closed-loop operation, this parameter sets the response sensitivity of the
drive when monitoring the output speed for co ntrol.
The larger the value entered here, the quick er the response to ch anges in the
received feedback.
Direct Access Number — F464
Parameter Type — Numeri cal
Factory Default — 1
Changeable During Run — Yes
Minimum — 1
Maximum — 9999

Load Moment of Inertia 2

Program ⇒ Feedback ⇒ PG Settings
This parameter is used for calculating accel/decel torque when compensating
for load inertia while operating in the Drooping Control mode.
Direct Access Number — F465
Parameter Type — Numeri cal
Factory Default — 35
Changeable During Run — Yes
Minimum — 0
Maximum — 100

Speed PID Switching Frequency

Program ⇒ Feedback ⇒ Feedback Settings
While running, this parameter establ ishes the threshold speed setting that is
used to determine if PID control may engage or remain engaged if active.
Direct Access Number — F466
Parameter Type — Numeri cal
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — Max. Freq. (F011)
Units — Hz

V/I Input Bias

Program ⇒ Frequency ⇒ Speed Reference Setpoints
This parameter is used to fine-tune the bias of the V/I input terminals.
Note: See note on pg. 43 for more information on the V/I terminal.
This setting may be used to ensure that the zero level of the input source (pot,
pressure transducer, flow met er, etc.) is also the zero level setting of the ASD
system.
This is accomplished by setting the input source to zero and adjusting this
setting to provide an output of zero from the ASD.
Direct Access Number — F470
Parameter Type — Numeri cal
Factory Default — 127
Changeable During Run — Yes
Minimum — 0
Maximum — 255

V/I Input Gain

Program ⇒ Frequency ⇒ Speed Reference Setpoints
This parameter is used to fine tune the gain of the V/I input terminals.
Note: See note on pg. 43 for more information on the V/I terminal.
This setting may be used to ensure that the 100% level of the input source (pot,
pressure transducer, flow meter, etc.) is also the 100% level setting of the ASD
system.
This is accomplished by setting the input source to 100% and adjusting this
setting to provide an output of 100% from the ASD.
Direct Access Number — F471
Parameter Type — Numeri cal
Factory Default — 129
Changeable During Run — Yes
Minimum — 0
Maximum — 255
F464 F471