Siemens SINUMERIK 840D Diagnostics Manual page 380

1 Alarms
Remedy:
Program Continuation:
26110
Definitions:
Reactions:
Remedy:
Program Continuation:
27000
Parameters:
Definitions:
Reactions:
Remedy:
1-380
Possible causes:
• $MA_ENC_TYPE not equal to 0 as a result of an oversight; the encoder should actually
be simulated (= 0).
• $MA_ENC_MODULE_NR entered incorrectly, i.e. the logical drive numbers were
exchanged and an invalid value is stored for this drive in
$MN_DRIVE_LOGIC_ADDRESS (see next paragraph) or a drive number which does not
exist on the bus was entered (check the number for slaves, for example).
• $MN_DRIVE_LOGIC_ADDRESS contains values which were not configured on the
Profibus (i.e. the values are not in SDB1000) or different addresses were selected for the
input and output slots of the drive in the Profibus configuration.
Switch control OFF - ON.
Independent drive stop/retract triggered
Informational alarm: An "independent extended stop or retract" was triggered on the drive
bus for at least one axis. The drive in question subsequently ignores NC travel com-
mands. The bus must be rebooted (hardware reset).
- NC not ready.
- The NC switches to follow-up mode.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Reboot the drive, hardware reset.
Switch control OFF - ON.
Axis %1 is not safely referenced
%1 = Axis number
There are two reasons for this alarm:
• the machine position has not yet been acknowledged by the user,
• the machine position has not yet been verified through follow-up referencing.
Even if the axis is already referenced, there is no confirmation that referencing has sup-
plied the correct result. For example, wrong results can occur if the axis was moved after
the control was switched off, with the result that the standstill position saved prior to
switching off is no longer correct. To make sure that this does not happen, the user must
acknowledge the displayed actual position after the first referencing process.
When the user enable has first been set, follow-up referencing must be carried out each
time the control is booted (with absolute encoders, this follow-up referencing is executed
automatically). This procedure is carried out to verify the standstill position saved prior to
switching off of the control.
Via the MD $MN_SAFE_ALARM_SUPPRESS_LEVEL (MD>=3), the alarm display can
be set in such a way that the group alarm 27100 is displayed for all SI axes.
- Alarm display.
SGA "Axis safely referenced" is not set. SE will be switched off, if the actual safety posi-
tion has not yet been confirmed by a user agreement. If the user agreement has been set,
SE will remain active. The safe cams are calculated and output. However, their signifi-
cance is limited as referencing has not been confirmed.
Traverse the axis to a known position, change to operating mode "Referencing" and press
softkey "Agreement". Check the positions displayed in the agreement screen on the
machine. If they match the expected or known position, confirm this by using the toggle
key. If the user agreement has already been set, reference the axis again.
The user agreement can be changed only via keyswitch position 3 or after password
entry.
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
10.04