26 • _CONF – Device configuration and I/O Subject area Parameter Description MC6000/7000
_ENCD
_VAL
Index
_VFCON
_PMOD
_KPAD
Contents
Introduction
_SIO
_SCTY
_REF
_SYS
_IO1
_IO2
_CAN
_OPT1
_MOT
_CONF
_TCON
_SCON
_PCON
Í Functions for inputs on MC6000, Page 21
Í Functions for inputs on MC7000, Page 22
Í Structure of reference input, Page 24
Í Notes on function selectors for inputs, Page 23
Torque limitation (SCALE function)
Some applications require that the torque limitation be continuously adjusted. The SCALE function can
be used to adjust the torque limitation by way of the analog input ISA1. When the SCALE function is
active it also takes effect in the event of a quick-stop!
Example: Winding drive
To ensure that the wound material does not tear, a specific torque must not be exceeded.
The tractive force is recorded via the dancer and the torque is corrected accordingly.
Note:
The SCALE function limits the reference value of the torque,i. e. the torque gener-
ated by the servocontroller (see diagram below). Dynamic forces may additionally
act on the motor shaft arising from the moment of inertia of the load.
0 ... +10 V
0 ... 20 mA
0 .. 100 % TCMMX
M
G
MC6000 / MC7000
0 V
+10 V
FISA1=
SCALE
1
2
3
4
+TCMMX
-TCMMX
-
-
ISA1
0 ... 100 % TCMMX
_SCON
_TCON
5
Key:
1 Dancer
2 Dancer upper stop (M=0, n=0)
3 Dancer upper stop (M=max., n=max.)
4 Speed reference
5 Roller with wound material
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