33
Application Notes
Leader-follower application
In this application, use a PCM4 to monitor the speed of the leader motor (Figure 18).
The PCM4 isolates the leader motor from the follower drive, and outputs a voltage
proportional to the leader motor armature voltage. The follower drive uses this voltage
reference to set the speed of the follower motor. An optional ratio potentiometer may
be used to scale the PCM4 output voltage.
Figure 18. Leader-Follower Application
LEADER
DRIVE
A1
9 (+)
8
7 (-)
TB501
TB502
10K OHM
(optional)
PCM4
FOLLOWER
DRIVE
(+) 2
(-) 1
A2
S1
S2
Motor
