5 Error messages
5.1 Introduction
138
DA1 Variable Frequency Drives
08/18 MN04020005Z-EN
www.eaton.com
5.1.3 Error list
The following table lists the failure codes, the possible causes and indicates
corrective measures.
Table 21: List of error messages
Message
Error no.
Possible cause and remedy
Stop
–
Ready to start. There is no drive enable signal present. There is no error
message present.
Inhibt
–
STO inputs (terminals 12 and/or 13) de-energized
• Safety relay switched off
• Voltage source overloaded
Consequence: The drive is disabled.
no-F
(
t
00
Shown for P0-13 if there are no messages in the error register.
OI-b
01
Excessively high braking current
• Check the brake resistor and its wiring for short-circuits and ground faults.
• Make sure that the braking resistor value is not lower than the minimum
permissible braking resistor value.
OL-br
02
Thermal overload on brake resistor
The drive has been switched off in order to prevent the brake resistor from
being thermally destroyed.
• Make the P1-04 and P2-25 ramp times longer in order to have less frequent
braking.
• Reduce the load's inertia, if possible.
O-I
03
Overcurrent at variable frequency drive output
Occurs right after switching on the unit:
• Check the cable connection between the inverter and the motor.
• Check the motor for shorted turns and ground faults.
Occurs when starting the motor:
• Check whether the motor can rotate freely and make sure that it is not
being blocked mechanically.
• Motor with mechanical brake: Check whether this has been triggered.
• Check the connection configuration (star/delta).
• Check to make sure that the motor data was entered correctly in P1-07,
P1-08, and P1-09.
• In vector mode (P4-01 = 0 or 1): Check whether the value cos
ϕ
(P4-05) has
been entered correctly and a motor identification run has been successfully
performed.
• Increase the acceleration ramp time (t-acc, P1-03) if necessary.
• With speed control (P4-01 = 2): Reduce the voltage boost with P1-11.
Occurs during operation at a constant speed:
• Check whether the motor is overloaded.
Occurs during acceleration/deceleration:
• The ramp times are too short and require too much power.
If P-03 / P-04 cannot be increased, a larger device may be required.
