K&R GT600-4T132G User Manual page 165

6.6.8 Overspeed Protection
Function Code Parameter Name
F9-67 Overspeed detection level
F9-68 Overspeed detection time
These function parameters define motor overspeed detection that is effective only for vector
control with speed sensor.
When detected motor speed exceeds maximum frequency and the excess is larger than the
value of F9-67 for longer than time set in F9-68, the AC drive detects Err43 and acts as selected
in the tens position in F9-50.
If F9-68 is set to 0, motor overspeed detection is disabled.
6.6.9 Speed Error Protection
Function Code Parameter Name
F9-69 Detection level of speed
error
F9-70 Detection time of speed
error
This function is effective only for vector control with speed sensor.
When detected motor speed is different from frequency reference and the difference is larger
than the value of F9-69 for longer than the time set in F9-70, the AC drive detects Err42 and acts
as selected in the units position in F9-50.
6.6.10 Undervoltage & Overvoltage Threshold and Overcurrent Fast Prevention
Function Code Parameter Name
A5-06 Undervoltage threshold
A5-09 Overvoltage threshold
A5-04 Overcurrent fast prevention
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. Description of Parameters
Setting Range
0.0% to 50.0% (max. frequency)
0.0s to 60.0s
Setting Range
0.0% to 50.0% (max. frequency)
0.0s to 60.0s
Setting Range
210 to 420 V
650 to 820 V
0: Disabled
1: Enabled
Default
20.0%
1.0s
Default
20.0%
5.0s
6
Default
350 V
820 V
1
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