9
05.01
9.9 Master/slave operation SIMODRIVE 611 analog
9-284
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
9.9 Master/slave operation SIMODRIVE 611 analog
Two SIMODRIVE main spindle drives can be mechanically rigidly coupled if the
master drive is closed–loop speed controlled and the slave drive is close–loop
torque controlled.
There are two operating modes available:
1. Open–loop torque control and
2. Open–loop torque control with slip monitoring
Speed setpoint for
the slave for open–
loop torque control-
led operation with
slip monitoring
Speed setpoint
M
3 ~
T. A9n (DAU)
T. 56/14
Rigid or quasi–rigid
connection, which
can also be relea-
sed in operation
M
3 ~
T. 56/14
Select terminal,
open–loop torque
control
Slave drive:
with a rigid coupling, ”open–loop torque controlled” with
the coupling released, ”closed–loop speed controlled”
Speed setpoint Torque setpoint
T. En
T. 24/8
T. Em
Select terminal, open–loop
torque control with
slip monitoring
Master drive
SIMODRIVE 611
MSD module
Slave drive
SIMODRIVE 611
MSD module
or
Fig. 9-25 Master/slave operation with an analog SIMODRIVE 611 system
Master drive: Term. A9n: Torque setpoint
Slave drive: Term. En: Open–loop torque controlled mode
(function number 4)
The torque setpoint of the master drive is entered into the slave drive as torque
setpoint (terminal 56/14) via a select analog output, terminal A9n.
!
Warning
If the mechanically rigid coupling is released, the slave drive must be simulta-
neously changed over to ”closed–loop speed control”.
Parallel operation (master/slave function, only user–friendly interface and
standard interface, 2-axis operation, max. 5 slave axes connected to a master)
Frequently, for parallel operation, a closed–loop speed controlled master drive is
equipped with one or several subordinate closed–loop current controlled drive
axes. The master drive outputs the current setpoint of the speed controller out-
put in parallel to the current controllers of the slave axes. The feed modules are
equipped with a master/slave function which can be activated.
Terminal 258 is used as the connection points. In the master axis, terminal 258
is used as current setpoint output; in the slave axes, terminal 258 is the current
setpoint input.
MSD
FD
9 Important Circuit Information
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