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3. SIGNALS AND WIRING
3.8.3 Source I/O interfaces
In this servo amplifier, source type I/O interfaces can be used.
(1) Digital input interface DI-1
This is an input circuit whose photocoupler anode side is input terminal. Transmit signals from source
(open-collector) type transistor output, relay switch, etc.
(2) Digital output interface DO-1
This is a circuit of emitter output terminal of the output transistor. When the output transistor is turned on,
current will be applied from the output to a load.
A maximum of 2.6 V voltage drop occurs in the servo amplifier.
For transistor
TR
Switch
24 V DC ± 10%
Approximately
5 mA
300 mA
V
1.0 V
CES
I
100 µA
CEO
Note. It will be approximately 4.3 kΩ for interface of CN3-1 and CN3-10 pins.
Servo amplifier
ALM,
etc.
DOCOM
Note. If the voltage drop (maximum of 2.6 V) interferes with the relay operation, apply high
voltage (maximum of 26.4 V) from external source.
3 - 36
Servo amplifier
EM2,
etc.
(Note)
Approximately
6.2 kΩ
DICOM
If polarity of diode is
reversed, servo amplifier
will malfunction.
Load
(Note) 24 V DC ± 10%
300 mA
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