sh030106u.pdf - 第466页

13. USIN G STO FUNCTI ON 13 - 13 (b) When o utputting tw o STO states by us ing one TOFB If polarity of diode is reversed, servo amplifier will malfunction. TOFCOM Servo amplifier TOFB2 Load TOFB1 (Note) 24 V DC ± 10% 30…

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13. USING STO FUNCTION
13 - 12
13.4 Detailed description 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 13.2. Refer to this section and make connection with the external device.
13.4.1 Sink I/O interface
(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.
Approx. 3.0 kΩ
STO1
STO2
Servo amplifier
Switch
Approx. 5 mA
For transistor
STOCOM
TR
V
CES
1.0 V
I
CEO
100 µA
24 V DC ± 10%
300 mA
(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 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.
(a) When outputting two STO states by using each TOFB
TOFCOM
Servo amplifier
TOFB2
If polarity of diode is
reversed, servo amplifier
will malfunction.
LoadTOFB1
Load
(Note)
24 V DC ± 10%
300 mA
Note. If the voltage drop (maximum of 2.6 V) interferes with the relay operation, apply high
volta
g
e
(
maximum of 26.4 V
)
from external source.
13. USING STO FUNCTION
13 - 13
(b) When outputting two STO states by using one TOFB
If polarity of diode is
reversed, servo amplifier
will malfunction.
TOFCOM
Servo amplifier
TOFB2
LoadTOFB1
(Note)
24 V DC ± 10%
300 mA
Note. If the voltage drop (maximum of 5.2 V) interferes with the relay operation, apply high
volta
g
e
(
maximum of 26.4 V
)
from external source.
13. USING STO FUNCTION
13 - 14
13.4.2 Source I/O interface
In this servo amplifier, source type I/O interfaces can be used.
(1) Digital input interface DI-1
This is an input circuit whose photocoupler anode side is the input terminal. Transmit signals from source
(open-collector) type transistor output, relay switch, etc.
Approx. 3.0 kΩ
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
(2) Digital output interface DO-1
This is a circuit in which the emitter of the output transistor is the output terminal. 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.
(a) When outputting two STO states by using each TOFB
Servo amplifier
Load
(Note)
24 V DC ± 10%
300 mA
TOFCOM
TOFB2
TOFB1
Load
If polarity of diode is
reversed, servo amplifier
will malfunction.
Note. If the voltage drop (maximum of 2.6 V) interferes with the relay operation, apply high
volta
g
e
(
maximum of 26.4 V
)
from external source.
(b) When outputting two STO states by using one TOFB
Servo amplifier
Load
(Note)
24 V DC ± 10%
300 mA
TOFCOM
TOFB2
TOFB1
If polarity of diode is
reversed, servo amplifier
will malfunction.
Note. If the voltage drop (maximum of 5.2 V) interferes with the relay operation, apply high
volta
g
e
(
maximum of 26.4 V
)
from external source.