Mitsubishi Electric MELSERVO MR-J4-A-RJ Series, Instruction Manual

Page: 55 / 416

2. SIGNALS AND WIRING
2 - 32
2.5.2 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 2.3. 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.
Approximately
5 mA
TR
24 V DC ± 10%
500 mA
Switch
For transistor
EM2,
etc.
Servo amplifier
DICOM
V
CES
≤
1.0 V
I
CEO
≤
100 A
Approximately
6.2 k
Ω
However, interface of CN1-10 and CN1-35 pins is as follows.
Approximately
1.2 k
Ω
Servo amplifier
24 V DC ± 10%
500 mA
OPC
CN1-10, CN1-35
DOCOM
SD
10 m or shorter
Approximately
20 mA
V
CES
≤
1.0 V
I
CEO
≤
100 A
(2) Digital output interface DO-1
This is a circuit in which the collector side of the output transistor is the output terminal. When the output
transistor is turned on, the current flows from 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 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.
(Note) 24 V DC ± 10%
500 mA
If polarity of diode is
reversed, servo amplifier
will malfunction.
Servo amplifier
ALM
etc.
Load
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.