Indverter V2 Manual
Issue 03 Dated 11 November 2009 S/w Ver 12.4 HEXMOTO
Controls Pvt.Ltd
45
• Over current during acceleration is
displayed when the load current
crosses more than 200% of the
motor current during acceleration.
Acceleration time is to be
increased.
Check whether drive rating is
sufficient for motor connected.
If the fault persists even when
Acceleration time is high,
problem may be due to wrong
output connection.
• Over current during deceleration is
displayed when the load current
crosses more than 200% of the
motor current during deceleration.
This can happen due to large
oscillations/ Resonance at a
particular speed of the motor.
Use jump speed feature or
increase/ decrease deceleration
time
• Over current during steady state
operation of the drive.
This can happen due to sudden
application of load or load
oscillations.
• Heat sink over temperature
Check whether DC cooling fan
on top of the drive is working.
If fault persists even after cooling
fan is working OK, reduce the
switching frequency to 2kHz.
Measure the output current using
a clamp-on meter and check
whether load current is within the
range of drive capacity
• Inverse over load fault. This is
applicable when Para 15 is
enabled.
Measure the output current using
a clamp-on meter and check
whether load current is within the
range of drive capacity
• Motor thermal trip. This is
applicable if Para 68 is set to
0002
If Para 68 is set as 0002, JOG
terminal must be connected to
GD if motor thermal switch is not
used. If motor thermal switch is
used, check for proper
connection of the motor thermal
circuit OR whether motor is
overheating
• Output short circuit trip
There is short circuit at the
output terminals. Check for
connections from drive output to
motor terminals.
• Serial communication Error
Drive configured as slave in RS485 network
is not getting Messages from Master within
time-out period set by Para 78
Check Serial Cable interface
Check whether master is
configured to send messages
within time-out period
If required, increase the time-out
period
SEr
OCA
OCD
O
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