4 i/o circuits, 4-1 i/o circuit specifications, I/o interf ace – Yamaha SRCP User Manual
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I/O INTERF
ACE
3-4 I/O Circuits
3-4
I/O Circuits
This section provides the SRCP controller I/O circuit specifications and examples of how the I/O
circuits should be connected. Refer to these specifications and diagrams when connecting to external
equipment such as a PLC.
3-4-1 I/O circuit specifications
■ Input Power
DC24V
±10% (supplied through EXT.CN)
■ Input Circuit
Excluding emergency stop input circuit
Insulation method:
Photocoupler insulation
Input terminal:
Relay contact or NPN open collector transistor connected between
input terminal and 0V terminal.
Input response:
30ms max.
Input current:
5mA/DC24V
Input sensitivity:
Current on: 3mA min.
Current off: 1mA max.
Emergency stop input circuit
Input terminal:
Relay contact connected between emergency stop inputs 1 and 2
(between EMG1 and EMG2).
Input response:
5ms max.
Input current:
40mA/DC24V
■ Output Circuit
Insulation method:
Photocoupler insulation between internal circuit and output tran-
sistor
Output terminal:
NPN open collector output of all collective output common termi-
nals (0V side)
Output response:
1ms max.
Max. output current:
50mA/DC24V per output
Residual ON voltage:
1.5V max.
■ Pulse Output Circuit
Output method:
Line driver (26LS31 or equivalent)
Maximum output current: 20mA