IAI America ACON-PO - Manual (Page 41)

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4. Operation Using I/O Signals
4. Operation Using I/O Signals
This chapter explains the wire connections and operation timings you should know in order to perform positioning
operation using a PLC with I/O signals. Two PIO patterns are available for you to choose from in accordance with your
specific application.
PIO pattern Setting (User Parameter No. 25)
Standard mode (factory setting) 0
Push mode 1
4.1 Interface Circuit
The standard interface circuit conforms to the NPN specification, but the PNP specification type is also available as an
option.
To simplify wiring, a common power line is used for both the NPN specification and PNP specification. Accordingly you
need not reverse the power connections when using the PNP specification.
4.1.1 External Input Specifications
Item Specification
Number of input points 4 points
Input voltage 24 VDC r 10%
Input current 5 mA per circuit
Operating voltage
ON voltage: Min. 18 V (3.5 mA)
OFF voltage: Max. 6 V (1 mA)
Leak current Max. 1 mA per point
Insulation method Photocoupler
Internal circuit configuration
[NPN specification]
[PNP specification]
Controller
Controller
+24-V external
power supply
+24-V external
power supply
Each
input
Each
input
Internal circuit
Internal circuit