Mitsubishi Electric MELSERVO-J4 MR-J4 TM Instruction Manual page 95

3. SIGNALS AND WIRING
3.8.2 Detailed explanation 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 device.
(1) Digital input interface DI-1
This is an input circuit whose photocoupler cathode side is input terminal. Transmit signals from sink
(open-collector) type transistor output, relay switch, etc. The following is a connection diagram for sink
input. Refer to section 3.8.3 for source input.
(2) Digital output interface DO-1
This is a circuit of collector output terminal of the output transistor. When the output transistor is turned
on, collector terminal current will be applied for the output.
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: 40 mA or less, maximum current: 50 mA or less, inrush current: 100 mA or less) A
maximum of 2.6 V voltage drop occurs in the servo amplifier.
The following shows a connection diagram for sink output. Refer to section 3.8.3 for source output.
For transistor
Approximately
5 mA
Switch
TR
V 1.0 V 24 V DC ± 10%
CES
I 100 µA 300 mA
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 - 30
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