Index Control - BONFIGLIOLI ACTIVE CUBE Applications Manual

4.7
The electronic gearbox with index control is available in configurations 116, 216 and
516. Via index control, deviations from synchronous running which are due to process
changes can be detected directly in the process by sensors and compensated by the
index controller. The sensors detect reference points of the Master drive and the Slave
drive and produce the index signals from these reference points. The time difference
between the index signals resulting from the different position of the drives is compen-
sated, thus the drives are synchronized.
Note:
Example: Synchronous running of transport conveyors
The transported material is conveyed from one conveyor to the next and taken along
by cams which serve as reference marks. The position of the reference marks is de-
tected by sensors which supply the index signals for controlling the synchronous op-
eration. The Slave drive is accelerated or decelerated depending on the time difference
between the index signals from the Master and the Slave. Synchronous operation is
restored as soon as the time difference is compensated, i.e. the reference marks of the
Master and the Slave are detected by the sensors at the same time.
Index Control Principle:
Indexsignal Master
Indexsignal Slave
09/08
09/08

Index Control

The connection of the index signals is described in chapter 2.1"Control Ter-
minals".
Master
Sensor
Master Index
Divider
Phase Discriminator
Slave Index
Divider
Limit
593
PI-Controller
Amplification
591
Integral Time
592
Application Manual Electronic Gear
Application Manual Electronic Gear
Transport good
Slave
Sensor
594
Offset
N
1
+
N
1
50 - Synchronisation Fault
595
51 - Signal Fault
692 - Index Contr.: Warning Period
f
soll
0
Index Controller
Release
596
+
Δ
f
soll
96
19
19