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F314
Search Method
Program Protection Retry/Restart
In the event of a momentary power outage, this parameter may be used to set
the starting point (frequency) of the scanning signal that is used to determine
the rotor speed or this parameter may be used to select the method used to
search for the speed of the rotor. See
on this parameter.
Settings:
0 — Normal
1 — Start from 0.0 Hz
2 — Start from Running Frequency
3 — Option Board (ASD-SS)
4 — PG
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 F301.
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 Parameters 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 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 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.
HX7+ ASD Installation and Operation Manual
F301
and
F312
for additional information
Direct Access Number — F314
Parameter Type — Selection List
Factory Default — Normal
Changeable During Run — No
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 — %
F320
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