7 Operation
−45−
7.5 Parallel operation
If two or more motors are to be operated at the same speed, they can be controlled
from the DC power supply or external potentiometer.
Use external DC power supply
• Use a DC power supply whose current capacity is at least the value calculated by
the formula below:
Current capacity when N drivers are connected: I = 1 × N (mA)
Example: If two drivers are connected, the current capacity should be at least
2 mA.
• All I/O signals other than the one used for speed setting should be connected to
each driver.
• If multiple motors are used with speed differences among them, make the
following adjustments:
First motor: Connect a resistor of 1.5 kΩ, 1/4 W to the driver’s M terminal.
Second and subsequent motors: Connect a variable resistor (VRn) of 5 kΩ, 1/4 W
to the applicable driver’s M terminal.
H
MCN2
CN1
L
+24 V
GND
Driver
H
M
L
Driver
Control line
1.5 kΩ, 1/4 W
DC
power supply
0 to 5 VDC
Power supply
line
+
-
VRn
5 kΩ, 1/4 W
CN2
CN1
+24 V
GND
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