Troubleshooting
Fault Code Messages
Fault Code No. Description
Suggested Remedy
n
00
No Fault
Not required.
01
Brake channel over current
Check external brake resistor condition and connection wiring.
02
Brake resistor overload
The drive has tripped to prevent damage to the brake resistor.
03
Output Over Current
Instantaneous Over current on the drive output. Excess load or shock load on
the motor.
NOTE
Following a trip, the drive cannot be immediately reset. A delay time
is inbuilt, which allows the power components of the drive time to recover to
avoid damage.
04
Motor Thermal Overload (I2t)
The drive has tripped after delivering >100% of value in P-08 for a period of
time to prevent damage to the motor.
06
Over voltage on DC bus
Check the supply voltage is within the allowed tolerance for the drive. If the
fault occurs on deceleration or stopping, increase the deceleration time in
P-04 or install a suitable brake resistor and activate the dynamic braking
function with P-34.
U
07
Under voltage on DC bus
The incoming supply voltage is too low. This trip occurs routinely when power
is removed from the drive. If it occurs during running, check the incoming
power supply voltage and all components in the power feed line to the drive.
08
Heatsink over temperature
The drive is too hot. Check the ambient temperature around the drive is within
the drive specification. Ensure sufficient cooling air is free to circulate around
the drive.
U
09
Under temperature
The drive temperature is below the minimum limit and must be increased to
operate the drive.
10
Factory Default parameters
loaded
11
External trip
E-trip requested on digital input 3. Normally closed contact has opened. If
motor thermistor is connected check if the motor is too hot.
12
Optibus comms loss
Check communication link between drive and external devices. Make sure
each drive in the network has its unique address.
13
DC bus ripple too high
Check incoming supply phases are all present and balanced.
14
Input phase loss trip
Check incoming power supply phases are present and balanced.
15
Output Over Current
Check for short circuits on the motor and connection cable.
NOTE
Following a trip, the drive cannot be immediately reset. A delay time
is inbuilt, which allows the power components of the drive time to recover to
avoid damage.
16
Faulty thermistor on heatsink
17
Internal memory fault (IO)
Press the stop key. If the fault persists, consult you supplier.
4
18
4-20mA Signal Lost
Check the analog input connection(s).
19
Internal memory fault (DSP)
Press the stop key. If the fault persists, consult you supplier.
21
Motor PTC thermistor trip
Connected motor thermistor over temperature, check wiring connections and
motor.
22
Cooling Fan Fault (IP66 only)
Check / replace the cooling fan.
23
Drive internal temperature
too high
Drive ambient temperature too high, check adequate cooling air is provided.
U
26
Output Fault
Indicates a fault on the output of the drive, such as one phase missing, motor
phase currents not balanced. Check the motor and connections.
