Siemens Sinumerik 840D sl Diagnostic Manual page 321

03/2009
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 MD34200 $MA_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 MD34200 $MA_ENC_REFP_MODE or reference 2nd encoder.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
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 direction keys or the handwheel. End hand-
wheel travel and delete the axial distance-to-go if necessary (NC/PLC interface signal DB31, ...
DBX2.2 (Delete distance-to-go/Spindle reset)).
Program Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
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 Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
20052 [Channel %1: ] Axis %2 already active
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: The axis is to traverse as a machine axis in JOG mode using the direction keys on the machine control
panel. However, this is not possible because:
1. It is already traversing as a geometry axis (through the channel-specific interface DB21-30
DBX12.6 / 12.7 (Traversing keys -/+) or DB21-30 DBX16.6 / 16.7 (Traversing keys -/+) or DB21-30
DBX20.6 / 20.7 (Traversing keys -/+)) or
2. It is already traversing as a machine axis (through the axis-specific interface DB31, ... DBX4.7 / 4.6
(Traversing keys plus/minus)) or
3. A frame is valid for a rotated coordinate system, and another geometry axis involved in this is
already traversing in JOG mode by means of the direction keys.
Reaction: Alarm display.
Remedy: Stop traversing through the channel or axis interface or stop the other geometry axis.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
20053 [Channel %1: ] Axis %2 DRF, FTOCON, external zero point offset not
possible
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: The axis is traversed in a mode (e.g. referencing) that allows no additional overlaid interpolation.
Reaction: Alarm display.
Remedy: Wait until the axis has reached its reference position or terminate reference point approach with
"Reset" and start DRF once again.
© Siemens AG, 2009. All Rights Reserved
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
Overview of Alarms
NCK alarms
2-321