Specifications

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• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
3. Controller Functions
Fkt-ext-Steuer
A20
( OSCI RPM )
duration during which the external
control switches gears
180
ms
N = N
command
N = N
command
motor accelerates
to speed command
value
analog
output N
X2/21
X2/29
OSCILATE
X2/6
N < MIN
A04
( MIN RPM )
220
ms
motor
speed
Sequence of operations The controller initiates the gear change by taking the OSCILLATE control
input to 1. The drive then brakes at the set ramp and changes to
oscillating speed at 2.5 Hz. The OSCILLATE message appears in the
display. The oscillating speed is the value in parameter OSCI RPM.
The control unit tells the controller via the N<MIN signal output at what
time point the speed of the motor permits a gear change. The signal
output N<MIN gives a steady 1 if the value of the parameter MIN RPM
is greater than that input by OSCI RPM.
Oscillation is asymmetrical, i.e., the motor shaft continues to turn during
oscillation and can overcome tooth-tooth positions during engagement.
If the OSCILLATE control input is switched back to 0 after the gear
change, the drive returns to the command value speed.
Figure 79: Sequence of operations - gear change via external controller with
constant speed command value