A1-User’s Manual
180
9.2.2
oC (Over Current)
1)
Diagnostic flow chart
oC
Measure
VFD output
Current I(U)
Read current value of trip history
(03.01~03.72)
If using oscilloscope or clamp(hook) meter, read RMS current value
I(U)>200% of VFD rated
output current
If oC
Occurred
at VFD start
If Heavy
loading
Increase
98.08
(torque boost)
By 0.1 MAX10
Reduce
98.08
(torque boost)
By 0.1 MIN 0
Else if oC
Occurred
during
Acceleration
Increase
23.04
(ACC time)
by 10sec MAX300
Else oC
Occurred
Decrease
31.18
(Stall current limit)
by 10% MIN110%
Increase
31.19
(Stall Dec time) by 1sec
MAX10sec
Else if oC
Occurred
during
Deceleration
23.05
<300sec
Increase
23.05
(Dec time)
By 10sec MAX300
21.04
(stop mode)
1:coast to stop
H/W Check
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
END
If 21.01=1(auto torque
boost) or
98.01
=2(SLV)
No
No
No
No
No
No
No
Yes
*SLV and Auto torque boost
controls ignore
98.08