NORD Drivesystems BU0750 - Manual (Page 133)

8 Error messages
BU 0750 GB-3311 Subject to technical amendments 133
8 Error messages
Errors cause the frequency inverters to switch off, in order to prevent a device fault.
The following options are available to reset a fault (acknowledge):
1. By switching mains off and on again,
2. By an appropriately programmed digital input (P420 ... P425 = Function 12),
3. By removing the "enable" from the FI (if no digital input acknowledge has been programmed),
4. By Bus acknowledgement or
5. By P506, the automatic error acknowledgement.
8.1 ControlBox display
The ControlBox (optional) displays an error with its number and the prefix "E".
In addition, the actual error is displayed in parameter P700. The last error
messages are stored in parameter P701. Further information on inverter status
when errors occur can be found in parameters P702 to P706.
If the cause of the error is no longer present, the error display in the ControlBox
flashes and the error can be acknowledged with the Enter key.
Table of possible error messages
Display Fault Cause
 Remedy Group Details in
P700 / P701
E001 1.0 Inverter overtemperature Error signal from output stage module (static)

Reduce ambient temperature (<50°C or
<40°C , see also Section 10 Technical data)
 Check control cabinet ventilation
E002 2.0
Motor overtemperature
(PTC)
Only if a digital input is
programmed (Function 13) Motor temperature sensor has triggered

Reduce motor load
 Increase motor speed
 Use external motor fan
2.1 Motor overtemperature (I
2
t)
Only if I
2
t motor (P535) is
programmed.)
I
2
t motor has triggered
 Reduce motor load
 Increase motor speed