Yamaha ERCX Series, User Manual

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3-
9
3
I/O INTERF
ACE
3-4 I/O Circuits
3-3-2 General-purpose output (DO0 to DO12)
These general-purpose outputs are available to users for freely controlling on/off operation in a pro-
gram.
These outputs are used in combination with an external 24V power supply, to drive loads such as
solenoid valves and LED lamps. These outputs of course, can be directly connected to a PLC input
circuit.
All general-purpose outputs are reset (turned off) when the ERCX controller is turned on or the
program is reset.
* When PRM33 ("Operation at return-to-origin complete" parameter) is set to 1 or 3, DO4 does
not turn off even if the program is reset. Similarly, when PRM46 ("Servo status output" param-
eter) is set to 1, DO7 does not turn off even if the program is reset.
3-4 I/O Circuits
This section provides the ERCX 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
Input voltage: 24V
±
10%
■
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: 33.3mA/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: 0.1A/DC24V per output
Residual ON voltage: 1.5V max.