Siemens SINUMERIK 840C Installation Instructions Manual page 1085

12 Functional Descriptions
12.30.5 Response in the event of an error
So that all axes of a master/slave grouping exit the follow-up control at the same time, they
must be reset internally at the same moment. For this reason, all axes of a master/slave
grouping must be defined in the same mode group.
Incorrect parameterization of the master/slave torque compensation control causes the alarm
1012*/2019* "Parameterization error NC-MD" and the service number 330.
Change from SW 5, position-controlled follow-up in the event of an error
SW 5 gives the user the option of setting bit 3 in MD 1812* (or 523* for spindles) to initiate
switchover to position-controlled follow-up for following axes (FA) in the event of an error. This
function must not be used if the master is also the leading axis for the slave because this
creates an unstable control loop.
1.) Normal
Error occurred
functionality
during:
without ESR
Master Immediate
initiation of follow-
up with
parameterized
stopping times
Slave Immediate
initiation of follow-
up with
parameterized
stopping times
Other axes in Immediate
mode group initiation of follow-
up with
parameterized
stopping times
The axis for which the error occurred must always be followed up immediately.
12–310
2.) ESR not 3.a) ESR active,
active, axes are axes are not FA
FA and MD or MD 1812*,
1812*, bit 3=1 bit 3 = 0
Transition to Immediate
controlled follow- initiation of follow-
up up with
parameterized
stopping times
Transition to Immediate
controlled follow- initiation of follow-
up up with
parameterized
stopping times
Transition to Master + slave:
controlled follow- Configured ESR,
up no transition to
controlled follow-
up, master/slave
remains intact
© Siemens AG 1992 All Rights Reserved
09.95
3.b) ESR active,
axes are FA and
MD 1812*,
bit 3=1
Transition to
controlled follow-
up
Transition to
controlled follow-
up
Master + slave:
Configured ESR,
no transition to
controlled follow-
up, master/slave
remains intact
6FC5197- AA50
SINUMERIK 840C (IA)