3-38 Description of diagnostic letters F... and E... ECODRIVE03 SMT-02VRS
DOK-ECODR3-SMT-02VRS**-WA01-EN-P
E844 Negative limit switch activated
The drive has received a command value which resulted in an axis
position outside the negative travel range. The axis has been brought to
a standstill by setting the velocity command to zero. A class 1 diagnostic
error is not generated. The drive will automatically follow command
values that lead back into the allowed range. Bit 2 of P-0-0090, Travel
limit parameter is set to "Overtravelling is handled as a warning".
Cause:
The negative limit switch has been activated.
Remedy:
Enter command values which lead back into the allowed range.
See also the functional description: "Travel Zone Limit Switch
Monitoring".
E881 Mains fault
Cause:
The mains voltage has failed for at least three mains cycles during
operation.
Mains errors and undervoltage errors were set as fatal warnings in
parameter P-0-0118, Power off on error.
The drive switches the motor off.
Recovery:
Checked the mains connections to ensure that they are as specified in
the project planning manual.
See function description: "Current Limit".
E886 No ready signal from supply module
Cause:
Input BbN "Mains section readyl“ on the drive controller is at 24V, i.e., the
mains section connected is not issuing a ready to operate signal.
In parameter P-0-0118, Power off on error mains errors and
undervoltage errors were set as warnings.
The drive switches the motor off.
Recovery:
1.) Check mains section.
2.) Check connection from mains section to input BbN on drive.
3.) If the drive is not supplied by a separate mains section, then switch
the input monitor off.
See P-0-4062, Power supply monitor.
See function description: "Current Limit".
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