SEW MOVITRAC LTE-B series, Operating Instructions Manual

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Operating Instructions – MOVITRAC® LTE-B
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7
Troubleshooting
Service and Error Codes
7 Service and Error Codes
7.1 Troubleshooting
7.2 Error memory
In parameter mode, parameter P-13 contains a data set with the last four events that
have occurred. The relevant messages are displayed in abbreviated form. The latest
message is displayed at the first position (when calling
P-13 ), previous events are listed
under the latest ones.
Once a new message is issued, the oldest message is deleted from the error log.
• INFORMATION
If the last shutdown was caused, for example, by undervoltage, no further undervolt-
age errors will be entered in the error log. The purpose is to avoid that the error log
is flooded with undervoltage errors, which occur every time the inverter is switched
off.
Symptom Cause and solution
Overload or overcurrent error of the unloaded
motor during acceleration Check the star/delta terminal connection in the motor. The nominal operating volt-
age of motor and inverter must match. Delta connection always yields the lower volt-
age of a multi-voltage motor.
Overload or overcurrent – motor does not turn Check for blocked rotor. Make sure that the mechanical brake is released (if
installed).
No enable for the drive – continues to display
"StoP" Check whether the hardware enable signal is present on binary input 1.
Ensure c10 V user output voltage (between terminals 5 and 7).
If faulty, check the wiring of the user terminal strip.
Check
P-12 for terminal mode / keypad mode.
If keypad mode is selected, press the <Start> key. The line voltage must correspond
with the specified values.
The inverter does not start at extremely cold
ambient conditions The inverter might not start at ambient temperatures below –10 °C. Under such con-
ditions, provide a heat source that keeps the ambient temperature of the drive above
0 °C.
No access to advanced menus P-14 must be set to advanced access code. The advanced access code is "101"
unless the user has changed the code in P-37 .
Parameters cannot be changed
"L" is displayed before the value The parameters are locked.
Make sure that parameter P38 is set to 0 to being able to access the parameters.
Some parameters cannot be changed while the motor is running. Make sure the
inverter is not enabled (binary input 1).