ACE-tronics G9 ASD Installation and Operation Manual 147
Switching Load Torque During Dynamic Braking
Program Crane/Hoist Express Speed
During dynamic braking, this parameter establishes the threshold torque level
that is used to determine if the Express Speed (
F328) operation may engage or
remain engaged if active.
If the Express Speed operation is terminated normal operation resumes.
Direct Access Number — F338
Parameter Type — Numerical
Factory Default — 30.00
Changeable During Run — Yes
Minimum — -250.00
Maximum — +250.00
Units — %
Accel/Decel Suspended Function
Program Fundamental Acc/Dec 1
To maintain a constant speed setting while running, this parameter may be used
to suspend speed changes for a user-set length of time.
The Accel/Decel Suspend function is enabled by setting this parameter to
either Terminal Board Input or to
F350 – F353.
Selecting Terminal Board Input at this parameter requires that a discrete input
terminal be set to Dwell Signal (see
Table 7 on pg. 236 for a listing of available
settings). Upon activation of the Dwell Signal terminal the output frequency
remains at the at-activation speed for the duration of the activation. When
deactivated the programmed accel or decel ramp resumes.
Selecting F350 – F353 at this parameter requires that the acceleration and/or the
deceleration Suspend Frequency and Suspend Time settings be completed at
F350, F351, F352, and F353. Upon reaching the frequency setting of F350
(Accel) or F352 (Decel), the Accel/Decel ramp will cease and the output
frequency will hold at the threshold frequency setting for the time setting of
F351 for acceleration or F353 for deceleration.
Settings:
Off
F350 – F353 Settings
Terminal Board Input (ACE G9-120V-PCB)
Direct Access Number — F349
Parameter Type — Selection List
Factory Default — Off
Changeable During Run — Yes
Acceleration Suspend Frequency
Program Fundamental Acc/Dec 1
When Enabled at F349, this parameter is used to set the frequency at which the
Acceleration Suspend function will activate.
During acceleration, this parameter sets the frequency at which acceleration
will stop and the motor will run at the setting of this parameter for the time
setting of
F351.
Direct Access Number — F350
Parameter Type — Numerical
Factory Default — 0.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — Max. Freq. (F011)
Units — Hz
Acceleration Suspend Time
Program Fundamental Acc/Dec 1
When Enabled at F349, this parameter is used to set the duration of activation
of the Acceleration Suspend function when initiated by reaching the
Acceleration Suspend Frequency setting (
F350).
Once this parameter times out the acceleration rate will resume from the point
of suspension.
Direct Access Number — F351
Parameter Type — Numerical
Factory Default — 0.0
Changeable During Run — Yes
Minimum — 0.0
Maximum — 10.0
Units — Seconds
F338 F351
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