Messages; List Of Messages - Eaton Cutler Hammer PowerXL DC1 E1 Series Parameter Manual

4 Messages

4.1 List of messages

Table 22: Messages
Message Possible causes and fixes
Ready to start. There is no drive enable signal present. There are no fault messages present.
StOP
The parameters' default settings have been loaded.
P-dEf
Overcurrent at variable frequency drive output
O-I
Occurs right after switching on the unit:
• Check the cable connection between the variable frequency drive 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 the brake is being applied.
• Check the connection configuration (star/delta)
• Check to make sure that the correct rated motor current has been entered in P-08
• Increase the acceleration ramp time (t-acc, P-03) if necessary.
• Reduce the voltage boost with P-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.
Motor overload. The thermal protection mechanism has tripped as a result of the device being
I. t -trP
run above the rated motor current set with P-08 longer than a specific time.
• Check to make sure that the rated motor current has been entered in P-08.
• Check the motor's connection configuration (e.g., start/delta)
• If the decimal points on the display flash during operation, this means that the unit is being
run in its overload range (> P-08). In this case, use P-03 to make the acceleration ramp longer
or reduce the load.
• Check whether the motor is being blocked mechanically or whether there are any additional
loads.
Excessively high braking current
OI-b
• Check the brake resistor and its wiring for short-circuits and ground faults.
• Make sure that the braking resistance value is not lower than the minimum permissible
braking resistance.
Thermal overload on brake resistor. The drive has been switched off in order to prevent the brake
OL-br
resistor from being thermally destroyed. This message will only be output if P-34 = 1
("braking chopper")
• Make the P-04 and P-24 ramp times longer in order to have less frequent braking.
• Reduce the load's inertia (if possible).
If the protection achieved with P-34 = 1 is not adequate for the brake resistor being used:
• Provide external protection for the brake resistor and set P-34 to a value of 2.
DC1...E1 Variable Frequency Drives 11/16 MN040022EN www.eaton.com
4 Messages
4.1 List of messages
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