Oriental motor AXH Series, Руководство по эксплуатации

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6 Setting the running speed
－ 28 －
•
To set the running speed only by the external potentiometer, there is no problem if
the INT.VR/EXT input is not connected.
•
To perform operation by switching the motor running speed, use the
INT.VR/EXT to switch the external potentiometer and internal potentiometer.
Note To use a shielded cable for connection with the external potentiometer,
connection should be made close to the input/output signal cable connector.
Connect the shielded wire to the pin No.3 GND.
Setting by external DC voltage
This method is used to set the speed by the D/A output of a programmable controller
or to perform two-step speed switching in combination with the internal
potentiometer.
For external DC voltage, use DC power supply (0 to 5 VDC, 1 mA or more) where
the primary and secondary sides are provided with reinforced insulation.
0 1 2 3 4 5
Speed
∗
[
r/
min
]
500
1000
1500
2000
2500
3000
3500
External DC voltage - speed characteristics
(typical value)
DC voltage [V]
External
DC power source
0 to 5 VDC
1 mA min.
+
-
5
4
VRM Green
VRL
Input/output signal
connector (CN2)
Yellow
∗
Indicates the speed of the motor alone. The speed of the gear output shaft of a geared type or
combination type is obtained by dividing the motor speed by the gear ratio.
To drive the motor set at the external DC voltage, turn off the INT.VR/EXT input (H
level).
•
To set the running speed only by the external speed setter, there is no problem if
the INT.VR/EXT input is not connected.
•
To perform operation by switching the motor running speed, use the INT.VR/EXT
to switch the external DC voltage and internal potentiometer.
Note • The external DC power supply voltage must not exceed 5 VDC. Otherwise,
the driver may be damaged.
• When connecting the external DC power supply, sufficient care must be
taken not to mistake power polarity. Connection with incorrect polarity may
damage the motor.
• To use a shielded cable for connection with the external DC power supply,
connection should be made close to the input/output signal cable connector.
Connect the shielded wire to the pin No.3 GND.