6. Description of Parameters
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6
6.6.8 Undervoltage & Overvoltage Threshold and Overcurrent Fast Prevention
Function Code Parameter Name Setting Range Default
A5-06
Undervoltage threshold 210 to 420 V 350 V
A5-09
Overvoltage threshold 650 to 820 V 820 V
A5-04
Overcurrent fast prevention 0: Disabled
1: Enabled
1
When DC bus voltage exceeds the setting of A5-06/A5-09, the AC drive detects Err09/Err05–
Err07.
It is suggested that overcurrent fast prevention is disabled (A5-04 = 0) in hoist applications such
as crane.
6.6.9 Output Overcurrent Protection
This is to provide overcurrent protection for the AC drive.
If the drive's output current is equal to or smaller than the value set in F8-36 and the duration
exceeds the value set in F8-37, digital output terminal set for function 36 becomes on.
Figure 6-45 Output current limit
Time
Time
F8-36
ON
F8-37
Output current
Output
overcurrent
detection signal
Function Code Parameter Name Setting Range Default
F8-36
Output overcurrent threshold 0.0% (no detection)
0.1% to 300.0% (rated motor
current)
200.0%
F8-37
Output overcurrent detection delay 0.00s to 600.00s 0.00s
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