Bosch 150 AC Specifications Page 88

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88
• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
3. Controller Functions
3.17 Master-Slave Operation
Two drives can be combined as master/slave to increase drive power.
Here, the master receives the speed command value from the NC; the
slave, the torque command value from the master. Master-slave operation
is used in a stiff mechanical connection for transmitting power to a
common drive shaft.
If the mechanical link between the slave and master drive is
broken, the speed of the slave drive goes to maximum speed.
Master-Antrieb
27
23
24
25
26
28
29
30
31
32
33
34
35
36
37
1
POS 2
E-STOP (RAC only)
RF
RUN
POS 1
MD-RED
OSCILATE
PAR 1
PAR 2
LIMIT 1
LIMIT 2
LIMIT 4
SPEED 1
SPEED 2
EXT POS
0
X2 control inputs
control uni
t
3 AS (KDA/TDA only)
1
1
1 = control
enable
signal from the
controller
^
9 TEMP WARN
X2 signal outputs
& with READY from slave
4 READY
& with TEMP WARN from slave
control unit
14 RF-SLAVE
1 = enable signal for slave drive
^
22 OVM
21 N
(
torque command
value for slave
drive
~
Legend:
= signal step
= any control
state
^
^
1 = +24V
0 = 0V
^
^
& = and-link
^
Master
-
Slave
slave
master
NC
controller
speed command
value
X4
X2
X3
control unit
( master )
X4
X3
control unit
( slave )
power
power
motor supply line
motor supply line
M
ab
P
ab
feedback
feedback
torque
command
value
tandem
gearbox
With regard to hardware and software, the control units for the master-
slave drive are identical and are defined as master and slave via
parameters.
Figure 85: Schematic of master-slave drive for increasing drive power
Master drive data
Figure 86: Control inputs and signal outputs for master drive
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