5．5
Multi-Motor Control
Two or more motors and drivers can be operated at the same speed by using a DC power supply or the external speed
potentiometer.
(1) Using a DC Power Supply
Note
・
Use a DC power supply whose current capacity is equal to or greater than the value obtained by the following
expression:
I = 1
×
N [mA]
where N is the number of drivers.
Thus, when two drivers are used, current capacity should be at least 2mA.
・
The lines for other input/output signals should be connected to each driver individually.
・
Motor speed differences can be adjusted by connecting a resistance of 470
Ω
, 1/4W to the M terminal of the
first driver, and a 1k
Ω
, 1/4W variable resistor (VRn) to the M terminals of the other drivers.
(2) Using the External Speed Potentiometer
Note
・
Connect the control line to the H, M and L terminals of each driver.
・
The resistance of the speed set potentiometer is given by the following expression:
VRx = 20/N [k
Ω
], N/4 (W)
where N is the number of drivers.
Thus, if two drivers are used, the resistance is 10k
Ω
, 1/2W.
・
Connect the other input/output lines to each driver individually.
・
Motor speed differences can be adjusted by connecting a resistance of 470
Ω
, 1/4W to the M terminal of the
first driver, and a 1k
Ω
, 1/4W variable resistor (VRn) to the M terminals of the other drivers.
・
No more than 20 motors should be operated simultaneously when using the external speed potentiometer.
H
M
L
AC100-115V
(200-230V)
AC100-115V
(200-230V)
Driver
Control line
470Ω,1/4W
DC power
supply
DC0
〜
5V
Power supply line
AC100-115V
(200-230V)
＋
−
H
M
L
Driver
VRn
1kΩ,1/4W
AC100-115V
(200-230V)
AC100-115V
(200-230V)
H
M
L
3
2
VRx
1
AC100-115V
(200-230V)
AC100-115V
(200-230V)
Driver
Control line
470Ω,1/4W
Power supply line
AC100-115V
(200-230V)
H
M
L
Driver
VRn
1kΩ,1/4W
AC100-115V
(200-230V)
AC100-115V
(200-230V)
19
