6. Connections of Control Unit
6.13 Connecting with Safety Observing I/O Device: SDIO Connector
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Safety standards taken into consideration
(a) 98/37/EC Machinery directive
(b) EN954-1:1996 Safety of machine – Safety-related parts of control system Part1:
General principles for design
(c) EN60204-1/1997 Safety of machine – Electrical equipment of machines; Part 1: General requirements
(2) Specifications of SDIO connector
<Cable side connector>
Type: 51353-1000
Contact type: 56134-9000
Recommended
manufacturer: MOLEX
<Wire material>
Type: UL1061-2464 AWG22
Recommended
manufacturer: Oki Electric Cable
1A
1B
5B
5A
SDIO connector pin assignment
Description of SDIO connector terminal
Pin I/O
Function
Pin
I/O
Function
1A COM
Sink (common 24V)
Source (common 0V)
1B
RG (GND for DO 24V power supply)
2A
I
SDI1 (Door 1 switch input)
2B
I
SDI2 (Door 2 switch input)
3A
Reserved
(Not
connected)
3B
Reserved
(Not
connected)
4A
24VDC (DO power supply)
4B
O
SDO1 (Contactor control output)
5A
Reserved
(Not
connected)
5B
Reserved
(Not
connected)
Pin Characteristic
Voltage
Current
Description
SDI1 to 2
Input
Refer to
description
Sink input signal: 0v
COM: 24V
Source input signal: 24v COM: 0V
SDO1 Output 24V
Max.
60mA
Contactor shutoff signal output.
(Note) Output voltage or output current may
not be sufficient enough to directly
control contactor. In such a case, use
a relay that operates under 24VDC,
60mA, etc. between control unit and
contactor.