Detailed Description Of Interfaces - Mitsubishi Electric MELSERVO-JN Series Instruction Manual

3. SIGNALS AND WIRING

3.8.2 Detailed description of interfaces

This section provides the details of the I/O signal interfaces (refer to the I/O division in the table) given in
section 3.5. Refer to this section and make connection with the external equipment.
(1) Digital input interface DI-1
Give a signal with a relay or open collector transistor. The following figure is for sink input. Refer to section
3.8.3 for source input.
(2) Digital output interface DO-1
A lamp, relay or photocoupler can be driven. Install a diode (D) for an inductive load, or install an inrush
current suppressing resistor (R) for a lamp load. (Rated current: 40mA or less, maximum current: 50mA or
less, inrush current: 100mA or less) A maximum of 2.6V voltage drop occurs in the servo amplifier.
The following figure is for the sink output. Refer to section 3.8.3 for the source output.
For transistor
Approx. 5mA
Switch
TR
V 1.0V 24VDC
CES
I 100 A 200mA
CEO
Servo amplifier
ALM,
etc.
DOCOM
(Note) 24VDC 10%
Note. If the voltage drop (maximum of 2.6V) interferes with the relay operation, apply high
voltage (maximum of 26.4V) from external source.
3 - 36
Servo amplifier
SON,
Approx. 5.6k
etc.
DICOM
10%
If polarity of diode is
reversed, servo
amplifier will fail.
Load
200mA