LEESON NEMA 4X SCR Control: 174107.00 - Manual (Page 37)

31 Application Notes
(+)
MOTOR
Leader
Drive
A1
A2
9
8
7
(+)
(-)
TB501
174335
Process
Control
Module
(PCM)
TB502
2
1 (-)
10K Ohm
(optional)
S2
S1
Follower
Drive
Figure 15. Leader-Follower Application
Leader-follower application
In this application, use a 174335 Process Control Module (PCM)
to monitor the speed of the leader motor (Figure 15). The PCM
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 PCM output voltage.