Siemens Sinumerik 840D sl Diagnostic Manual page 327

03/2009
Remedy: Please inform the authorized personnel/service department. Do not initiate mode change. Cause the
PLC to check the axis and make sure in the PLC program that the axis ends oscillation if such mode
changes take place.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20077 [Channel %1: ] Axis %2 programmed position is behind software limit
switch %3
Parameters: %1 = Channel number
%2 = Axis number
%3 = "+" or "-"
Definitions: The axis is traversed as an oscillating axis and the target position (reversal position or end position)
is located behind the corresponding software limit switch. The axis is not traversed.
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Specify smaller target position.
Modify MD for SW limit switch.
Possibly activate another SW limit switch.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20078 [Channel %1: ] Axis %2 programmed position is behind working area
limit %3
Parameters: %1 = Channel number
%2 = Axis number
%3 = "+" or "-"
Definitions: The axis is traversed as an oscillating axis and the target position (reversal position or end position)
is located behind the corresponding effective working area limitation. The axis is not traversed.
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Specify smaller target position.
Deactivate working area limitation.
Set working area limitation differentially.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20079 [Channel %1: ] Axis %2 oscillation path %3 <= 0
Parameters: %1 = Channel number
%2 = Axis number
%3 = Length
Definitions: The axis is traversed as an oscillating axis and the distance to be traversed is smaller than or equal
to zero. For example, both reversal points are situated on an identical position, one reversal point was
shifted against the oscillating direction beyond the other reversal point. The axis is not traversed.
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Specify correct target position (reversal position, end position).
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20080 [Channel %1: ] Axis %2 no handwheel assigned for override
Parameters: %1 = Channel number
%2 = Axis number
© Siemens AG, 2009. All Rights Reserved
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
Overview of Alarms
NCK alarms
2-327