5 Error Messages
5.3 Fault list
140
DC1…20… and DC1…OE1 Variable Frequency Drives
02/20 MN040059EN
www.eaton.com
PS-trp
05
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
06
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
07
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
08
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
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.
E-trip
11
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-
0
bS
12
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!
FIt-dc
13
Excessively high DC link voltage ripple
P-LOss
14
Incoming power phase failure (only for devices with a three-phase power supply)
hO-I
15
Overcurrent at output. See fault 03 (
O-I
).
th-f
(
t
16
Malfunctioning heat sink thermistor.
Message
Error no.
[dez]
Possible causes and fixes
