Specifications

• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
45
3. Controller Functions
Motor standstill
Drehzahlsollwertrampen
Legend:
1 = +24V
0 = 0V
= signal step
= any control
state
^
^
^
^
27
23
24
25
26
28
29
30
31
32
33
34
35
36
37
3
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
AS (KDA/TDA only)
0
control unit
X2 control inputs
1
=
control enable signal
^
0
=
E-Stop
^
1
=
command enable
^
1
=
weighting changeover
^
The specified ramps are active when the controller enabling signal (RF)
and the speed command value enable signal (RUN) are switched on and
off!
Ramps
Furthermore, when the drive is stopped with the controller enable signal
switched off (RF contol input=0), the controller can check standstill via
the signal output "N=CMD" (speed command value must be 0!).
Torque disconnection is compatible via function parameters if the motor
speed is less than the value in parameter MINRPM. This is useful if the
motor has to be locked in the stopped position after controller braking, but
the controller enabling signal does not have to be disconnected.
The signal „N < MIN“ does not meet personnel protection
needs in the working area of the main spindle!
3.4 Speed Command Value Ramps
Torque disconnect
In many cases in main spindle drives it suffices to apply the speed
command value via simple control devices (PLC and the like). Sudden
changes in the speed command value can be converted in the control
unit to ramp-type characteristics.
Three different selectable, successive ramp slopes are available in the
controller. They can be used, for example, for breakaway damping and
limiting the acceleration for belt couplings. In the constant-power range,
the torque is reduced via the speed. In this case, the regulation can be
maintained in the active area by means of the third ramp (constant speed
increase).
Different ramp slopes can be entered for a maximum of four speed
reduction stages.
Figure 26: Control inputs affecting the speed command value ramps