User manual

5 Error messages
5.3 Fault list
128 DC1 Variable Frequency Drive 04/16 MN04020003Z-EN www.eaton.com
O.Volt 06 Overvoltage in DC link
The DC link voltage value can be viewed using parameter P0-20.
P0-36 contains a fault register with the last values before the unit was switched off (scan time:
256 ms).
• Check to make sure that the supply voltage falls within the range for which the variable
frequency drive is sized.
• If the fault occurs during deceleration or stopping: Make the deceleration ramp (P1-04/P2-25)
longer or use the brake resistor.
• In vector control mode (P4-01 = 0 or = 1): Reduce the speed controller’s gain (P4-03).
• If using the PID controller: Reduce P3-11 (PID1 fault ramp) to ensure that the ramps are active.
V.Volt
07 Undervoltage in DC link
Note:
Generally, this message will appear when the supply voltage is switched off on the device and the
DC link voltage dies away.
In this case, there is no fault.
If the message appears during operation:
• Check whether the power supply voltage is too low.
• Check all components/devices in the variable frequency drive’s feeder circuit (circuit-breaker,
contactor, choke, etc.) to make sure they are connected properly and have an adequate contact
resistance.
O-t
08 Overtemperature at heat sink. The drive is too hot.
The heat sink temperature can be viewed by using P0-21. P0-38 contains a fault register with the
last values before the unit was switched off (scan time: 30 s).
• Check to make sure that the variable frequency drive is being operated within the ambient
temperature range specified for it. (IP20 devices: max. 50 °C; IP66 devices: max. 40 °C).
• Check to make sure that the device fan is running.
• Make sure that cooling air can circulate freely (clearances to neighboring devices above and
below the variable frequency drive).
• Improve the control cabinet’s ventilation if necessary: The device’s vents must not be
obstructed, e.g., by dirt or as a result of devices being installed too close to each other.
• Reduce the switching frequency with P2-24.
• Reduce the load, if possible.
V-t
09 Under-temperature
The message will appear if the ambient temperature falls below -10 °C. In order to be able to start
the drive, the temperature must be higher than this.
P-dEf 10 The parameters’ default settings have been loaded.
• Press the STOP button: You will be able to reconfigure the drive after doing so.
E-trip
11 External fault (at digital input 5, terminal 10, if P1-13 = 6/7/16/17). There must be a high-level
signal at this input in order to be able to run the variable frequency drive.
• If a thermistor is connected to terminal 10, check whether the motor is too hot.
P-LOss 14 Incoming power phase failure (only for devices with a three-phase power supply)
th-f(t 16 Malfunctioning heat sink thermistor.
• Please contact your nearest Eaton sales branch.
dAtA-F
17 Error in internal memory. The parameters have not been saved and the default settings have been
loaded.
• Change the parameter values (again) and save them once more.
• If the message appears again, please contact your nearest Eaton sales branch.
4-20 F
18 The analog input’s input current does not fall within the specified range.
• Check the setting in P2-30 for AI1 (terminal 6) and P2-33 for AI2 (terminal 10).
• In the case of 4-20 mA: Check the setpoint connection for wire breakage.
Message Error no.
[dec]
Possible causes and fixes