Detailed Explanation Of Interfaces - Mitsubishi MR-JE-10B Instruction Manual

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 the 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 in which the collector of the output transistor is the output terminal. When the output
transistor is turned on, the current will flow to the collector terminal.
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 lower, maximum current: 50 mA or lower, inrush current: 100 mA or lower) 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 (Note)
CEO
Note. For the servo amplifiers manufactured in April 2016 or earlier (or manufactured in
China in May 2016 or earlier), the value 100 mA is applicable.
Servo amplifier
MBR
DOCOM
Note 1. If the voltage drop (maximum of 2.6 V) interferes with the relay operation, apply
high voltage (maximum of 26.4 V) from an external source.
2. For the servo amplifiers manufactured in April 2016 or earlier (or manufactured in
China in May 2016 or earlier), the value 100 mA is applicable.
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Servo amplifier
EM2
Approximately
6.2 k Ω
DICOM
If polarity of diode is
reversed, servo amplifier
will malfunction.
Load
24 V DC ± 10% (Note 1)
300 mA (Note 2)