9
Isolation Diode
F(–)
A(–)
A(–)
A(+)
A(+)
Additional
Slaves
Follower
Motor #1
Follower
Motor #2
Follower
Motor #3
A(–)
A(+)
P2
F(–)
P2
F(–)
P2
Ratio 5K
Ω
9(–)
10(+)
BC145
5
7
Leader Motor
A(–)
A(+)
BC141
BC141
BC141
BC141
FIGURE 5 – LEADER/FOLLOWER VOLTAGE FOLLOWING SYSTEM WITH MULTIPLE MOTORS
A) From a Single Main Motor
BC145
6
10 (+)
9 (–)
P1*
5K
Pot
5
*Connect high side of potentiometer
to terminal "P1" (1/4" QD)
Connect
as above
WARNING!
If Signal Isolator is connected to multiple speed controls;
1) Multiple controls must be powered from the same phase of AC line.
2) The positive input terminal to each speed control must be installed with a 1 amp - 600V isolation diode as
shown.
3) Multiple speed controls can not be used with PWM, Regenerative or Adjustable Frequency Drives (Inverters).
B) From a Single Main Potentiometer
A 10K ratio poten-
tiometer is used to
control up to ten (10)
follower motors.
If a 5K ratio poten-
tiometer is used, up
to five (5) follower
motors can be con-
trolled.
