Chapter 4 Parameters|
Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12 4-131
08.08 Current Limit for Speed Search Unit: 1
Settings 30 to 200% Factory Setting: 150
It limits the drive output current during speed search.
When executing speed search, the V/f curve will be by the setting in the group 01.
The level of speed search will affect the speed synchronization time. The larger setting is set
and the faster it will reach the speed synchronization. But too large setting may cause overload.
When Pr.08.04 is set to 1: When the speed searches downward, the output frequency starts
with the master frequency. The output voltage and output current will be increased from 0.
When the output current reaches Pr.08.08 setting, the output frequency continuous searches
downward. When the output frequency, output voltage and V/f setting frequency are the same,
it will be regarded as the synchronization reached and accelerate to the master frequency by
V/f curve.
When Pr.08.04 is set to 2: When the speed searches upward, it will accelerate by V/f curve.
Output
Frequency
Output
Vol tage
08.06
08.05
08.04=1
08.06
08.05
08.04=2
Power
Input
Maximum Allowable
Power Loss Time
Baseblock Time
Speed Search
Speed
Synchronization
Detection
Maximum
Allowable Power
Baseblock Time
08.09 Skip Frequency 1 Upper Limit Unit: 0.01
08.10 Skip Frequency 1 Lower Limit Unit: 0.01
08.11 Skip Frequency 2 Upper Limit Unit: 0.01
08.12 Skip Frequency 2 Lower Limit Unit: 0.01
08.13 Skip Frequency 3 Upper Limit Unit: 0.01
08.14 Skip Frequency 3 Lower Limit Unit: 0.01
Settings 0.00 to 600.0Hz Factory Setting: 0.00
These parameters are used to set the frequencies that are inhibited to operate. This function
can be used to prevent the resonance generated from the original frequency of the machines.
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