Control and controller functions 19
3.2.6 Normal slow down
The main control system no longer activates the
inputs speed "V_" or direction preset "RV_". The
controller decelerates down to a standstill in
accordance with the set deceleration
/DECELERATING/A_NEG with rounded
transitions. When the speed drops below the
/DECELERATING/V_BR speed, the controller
opens the output relay "Spring-loaded safety
brake - MB" so that the spring-loaded safety
brake engages at the same moment as that at
which the speed 0 is reached. The controller
blocks the power semi-conductors and closes
the output relay "Controller ready - RB".
Figure 3.7 Controlling NORMAL SLOW DOWN with control signals over time
3.2.7 Quick stop
If the higher control swiches the input "RF -
controller release" off during running, the control
device decelerates with the
maximum
deceleration /INSTALLATION/A_MAX
set.
If the value 3.5 m/s
2
is set for A_MAX (factory
setting), the control device immediately switches
off the output "MB" and "RB". In this case, the
drive is only decelerated by means of the
mechanical stopping brake.
Figure 3.8
Quick stop when switching off the
"Controller release - RF"
.
V
t
inputs
outputs
V1
6
7
8
V _BR
ST
RB
MB
RF
V1
RV1
max.1,5s
RV2
V
t
inputs
outputs
V3
ST
RB
MB
RF
V1
RV1
RV2
/INSTALLATION/A_MAX < 3.5 m/s²
