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AMX Distributed Audio Controllers Delta Series Dokumentacja Strona 133

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Chapter 5 Parameters|VFD-B Series
5-76 Revision July 2008, BE16, SW V4.08 & V5.00
When momentary power loss is detected, the AC drive will block its output and then wait for a
specified period of time (determined by Pr.08-06, called Base-Block Time) before resuming
operation. This parameter should be set at a value to ensure that any residual regeneration
voltage from the motors on the output has disappeared before the drive is activated again.
This parameter also determines the waiting time before resuming operation after External
Baseblock and after Auto Restart after Fault (Pr.08-14).
When using a PG card with PG (encoder), speed search will begin at the actual PG (encoder)
feedback speed and settings 01 and 02 in Pr.08-04 will be invalid.
08 - 07
Current Limit for Speed Search
Unit: 1
Settings 30 to 200%
Factory Setting: 150
Following a momentary power loss, the AC motor drive will start its speed search operation
only if the output current is greater than the value set by Pr.8-07. When the output current is
less than the value of Pr.8-07, the AC motor drive output frequency is at “speed
synchronization point”. The drive will start to accelerate or decelerate back to the operating
frequency at which it was running prior to the power loss.
Output
Frequency
Output
Vol tage
08-06
08-05
08-04=01
08-06
08-05
08-04=02
Power
Input
Maximum Allowable
Power Loss Time
Baseblock Time
Speed Search
Speed
Synchronization
Detection
Maximum
Allowable Power
Baseblock Time
08 - 08 Skip Frequency 1 Upper Limit Unit: 0.01
08 - 09 Skip Frequency 1 Lower Limit Unit: 0.01
08 - 10 Skip Frequency 2 Upper Limit Unit: 0.01
08 - 11 Skip Frequency 2 Lower Limit Unit: 0.01
08 - 12 Skip Frequency 3 Upper Limit Unit: 0.01
08 - 13 Skip Frequency 3 Lower Limit Unit: 0.01
Settings 0.00 to 400.00Hz Factory Setting: 0.00
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