Detailed Explanation Of Interfaces - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

13.4

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 the following section.
Refer to this section and make connection with the external device.
Page 456 STO I/O signal connector (CN8) and pin assignment
Sink I/O interface
Digital input interface DI-1
This is an input circuit in which photocoupler cathode side is input terminal. Transmit signals from sink (open-collector) type
transistor output, relay switch, etc.
For transistor
Approx. 5 mA
Switch
TR
V ≤ 1.0 V 24 V DC ± 10%
CES
I ≤ 100 μA 300 mA
CEO
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 to 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 5.2 V voltage
drop occurs in the servo amplifier.
■When outputting two STO states by using each TOFB
Servo amplifier
TOFB1
TOFCOM
24 V DC ± 10%
300 mA
TOFB2
*1 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.
■When outputting two STO states by using one TOFB
Servo amplifier
TOFB1
TOFCOM
24 V DC ± 10%
300 mA
TOFB2
*1 If the voltage drop (maximum of 5.2 V) interferes with the relay operation, apply high voltage (maximum of 26.4 V) from external source.
Servo amplifier
STO1
STO2
Approx. 3.0 k
STOCOM
If polarity of diode is
reversed, servo amplifier
Load
will malfunction.
*1
Load
If polarity of diode is
reversed, servo amplifier
Load
will malfunction.
*1
13 USING STO FUNCTION
13.4 Detailed explanation of interfaces
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