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13 USING STO FUNCTION
13.4 Detailed explanation of interfaces
Source I/O interface
In this servo amplifier, source type I/O interfaces can be used.
Digital input interface DI-1
This is an input circuit in which the anode of the photocoupler is the input terminal. Transmit signals from source (open-
collector) type transistor output, relay switch, etc.
Digital output interface DO-1
This is a circuit of emitter output terminal of the output transistor. When the output transistor is turned on, current will be
applied from the output to a load.
A maximum of 5.2 V voltage drop occurs in the servo amplifier.
■
When outputting two STO states by using each TOFB
*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
*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.
Approx. 3.0 k
˖
STO1
STO2
Servo amplifier
Switch
STOCOM
TR
Approx. 5 mA
V
CES
≤ 1.0 V
I
CEO
≤ 100 μA
24 V DC ± 10%
300 mA
Servo amplifier
Load
24 V DC ± 10%
*1
300 mA
TOFCOM
TOFB2
TOFB1
Load
If polarity of diode is
reversed, servo amplifier
will malfunction.
Servo amplifier
Load
24 V DC ± 10%
*1
300 mA
TOFCOM
TOFB2
TOFB1
If polarity of diode is
reversed, servo amplifier
will malfunction.
Summary of Contents for MELSERVO-J4 series
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