Siemens SINUMERIK 840D Description Of Functions page 190

6 Hydraulics Diagnostics
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SINUMERIK 840D/SIMODRIVE 611 digital Descr. of Functions HLA Module (FBHLA) – 04.00 Edition
Axis %1, drive %2 zero mark monitoring motor measuring system
%1 = NC axis number
%2 = drive number
Error in modulo (16/10) incrementation of encoder mark number on zero marker
crossings. Increments have been lost or extra increments "trapped".
The alarm can be reconfigured in MD 11412: ALARM_REACTION_CHAN_NO-
READY (channel not ready).
Mode group not ready.
Switchover for entire channel via MD might be possible.
Channel not ready.
NC Stop in response to alarm.
NC Start disable.
The NC switches to follow-up mode.
Alarm is displayed.
Interface signals are set.
Please inform authorized personnel/service engineer.
Use original Siemens pre-assembled encoder cables (high degree of shield
protection).
Check encoder, encoder cable for cable break and shield bonding point. Check
shield bonding point on front plate (top screw), replace closed-loop control mod-
ule if necessary.
Check distance between gear wheel and sensor on gear wheel encoders. If a
BERO is installed, it is not the BERO signal which is monitored, but the zero
marker of the encoder.
Switch control system OFF and ON again.
Axis %1, drive %2 measuring function active
%1 = NC axis number
%2 = drive number
The measuring function (e.g. frequency response measurement) was active as
the power supply was connected (power-up).
The function might have been started illegally.
NC not ready.
Switchover for entire channel via MD might be possible.
Channel not ready.
NC Stop in response to alarm.
NC Start disable.
The NC switches to follow-up mode.
Alarm is displayed.
Interface signals are set.
Stop the measuring function
NCK Reset
Switch control system OFF and ON again.
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