Adtech iMASTER – A1 Series - Oc (over Current)

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)
NoNo
No
No
No
No
No
Yes
*SLV and Auto torque boost
controls ignore 98.08