4 Messages
4.1 List of messages
30
DC1…E1 Variable Frequency Drives
11/16 MN040022EN
www.eaton.com
PS-trp
Overcurrent (Hardware)
• Check the wiring to the motor and the motor itself for short-circuits and ground faults.
• Disconnect the motor cable from the variable frequency drive and switch the variable
frequency drive back on.
• If the fault message still appears, the device needs to be replaced. Before commissioning the
new device, check the system for short-circuits or ground faults that could have caused the
device to fail.
O.Volt
Overvoltage in DC link
• Check to make sure that the supply voltage falls within the range for which the variable
frequency drive is sized.
If the error occurs during deceleration or stopping:
• Make the deceleration ramp (P-04/P-24) longer or use the brake resistor and activate the
braking chopper with P-34 (only on devices with frame size FS2, FS3, or FS4).
VVolt
Undervoltage in DC link
Hint:
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
Overtemperature at heat sink. The drive is too hot.
• 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).
• Make sure that cooling air can circulate freely (clearances to neighboring devices above and
below the variable frequency drive).
• Improve the ventilation in the control cabinet 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.
V-t
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.
th-f
(
t
Malfunctioning heat sink thermistor.
• Please contact your nearest Eaton sales branch.
E-trip
External fault (at digital input 3, terminal 4). 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 4:
• Check whether the motor is too hot.
SC-trp
Serial communication lost
• Check to make sure that the connection to other variable frequency drives and external
modules is set up and working correctly: every module on the bus must have its own address.
There must not be two or more modules with the exact same address!
P-LOss
Incoming power phase failure (only for devices with a three-phase power supply)
SPIn-F
Speed detection before switching (on the running motor) unsuccessful.
dAtA-F
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.
Message
Possible causes and fixes
Summary of Contents for Cutler Hammer PowerXL DC1 E1 Series
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