Siemens Sinumerik 840D Series Function Manual page 191
Hla module
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02.99
10.03
300 506
Explanation
Response
Remedy
Continue program
Siemens AG, 2003. All rights reserved
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
Axis %1, drive %2, no sign of life from NC
%1 = NC axis number
%2 = drive number
Upon servo enable, the NC must update the sign-of-life monitoring in each posi-
tion control cycle. In case of error, sign-of-life monitoring has not been updated.
Cause:
a) NC no longer updates its sign of life in response to an alarm
(e.g. 611D alarm)
b) Communication error on drive bus
c) Hardware error on drive module
d) NC error
e) On the 840D: Value of the machine data MD10082:
MN_CTRLOUT_LEAD_TIME (offset in setpoint transfer time) is too high
The alarm can be reconfigured using MD 11412: ALARM_REAC-
TION_CHAN_NOREADY (channel not ready).
Mode group not ready.
Under certain circumstances it can be switched over across the entire channel
via MD.
Channel not ready.
NC stopped in response to alarm.
NC start disable.
The NC switches to follow-up mode.
Alarm display.
Interface signals are set.
Please inform the authorized personnel/service department.
For a) Determine whether the sign-of-life monitoring failure is a sequential fault.
A sequential fault is caused by: A fault/alarm on axis x in an n-axis
structure, for example. If this error description has occurred, the above
error message is output for all n axes, even though the fault/alarm has
only occurred on axis x.
==>Rectify error on axis x
==>The signs of life for the other axes are irrelevant.
For b) Check plug-in connection, take measures to suppress RI (check
shielding/ground connections)
For c) Replace closed-loop control module
For d) See NC error diagnosis, replace NC hardware if necessary
For e) Set machine data 840D MD10082: CTRLOUT_LEAD_TIME
(offset in setpoint transfer time) to correct value using
machine data MD10083: CTRLOUT_LEAD_TIME_MAX
(maximum settable offset in setpoint transfer time).
Switch control system OFF and ON again.
6 Hydraulics Diagnostics
6-191
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