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Source I/O interface
For the servo amplifiers in this manual, source type I/O interfaces can be used.
Digital input interface DI-1
This is an input circuit in which the anode of the photocoupler is the input terminal. Transmit signals from a source (open-
collector) type transistor output, relay switch, etc.
For transistor
TR
Switch
24 V DC
Approx. 5 mA
300 mA
V
≤ 1.0 V
CES
I
≤ 100 μA
CEO
Digital output interface DO-1
This is a circuit in which the emitter of the output transistor is the output terminal. When the output transistor is turned on, the
current flows from the output terminal to a load.
A maximum of 2.6 V voltage drop occurs in the servo amplifier.
Servo amplifier
ALM
etc.
DOCOM
*1 If the voltage drop (a maximum of 2.6 V) interferes with the relay operation, apply high voltage (a maximum of 26.4 V) from an external
source.
Servo amplifier
EM2
etc.
Approx. 6.2 kΩ
DICOM
± 10 %
If polarity of diode is
reversed, servo amplifier
will malfunction.
Load
*1
24 V DC
± 10 %
300 mA
3 SIGNALS AND WIRING
3.6 Interface
3
39
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