Siemens SINUMERIK 840Di Diagnostic Manual page 360

Overview of Alarms
NCK alarms
20007 Channel %1 axis %2 reference point approach requires 2 measuring
systems
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: 2 encoders are needed for setting 34200 ENC_REFP_MODE = 6!
Reaction: NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Please inform the authorized personnel/service department. Modify reference mode 34200
ENC_REFP_MODE or install and configure a second encoder.
Program Clear alarm with the RESET key. Restart part program
Continuation:
20008 Channel %1 axis %2 reference point approach requires second
referenced measuring system
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: When setting 34200 ENC_REFP_MODE = 6 the 2nd encoder must first be referenced.
Reaction: NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Modify referencing mode ENC_REFP_MODE or reference 2nd encoder.
Program Clear alarm with the RESET key. Restart part program
Continuation:
20050 Channel %1 axis %2 handwheel mode active
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: The axes cannot be traversed in JOG mode using the traversing keys because traversing is still taking
place via the handwheel.
Reaction: Alarm display.
Remedy: Decide whether the axis is to be traversed by means of the jog keys or via the handwheel. End
handwheel travel and delete the axial distance-to-go if necessary (interface signal DB 31 - 48, DBX
2.2).
Program Alarm display showing cause of alarm disappears. No further operator action necessary.
Continuation:
20051 Channel %1 axis %2 handwheel mode not possible
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: The axis is already traveling via the traversing keys, so handwheel mode is no longer possible.
Reaction: Alarm display.
Remedy: Decide whether the axis is to be traversed by means of the jog keys or via the handwheel.
Program Alarm display showing cause of alarm disappears. No further operator action necessary.
Continuation:
2-360
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006