Figure B-4 Control circuit terminals of the I/O extension card
The following table describes the functions of the control circuit terminals.
Table B-1 Function descriptions fo the control circuit terminals
Type
Terminal
Symbol
Terminal Name Function Description
+10V-GND +10V-GND
Provide +10 V power supply externally. Generally, it
provides power supply to the external potentiometer
with resistance range of 1 k to 5 k.
Maximum output current: 10 mA
+24V-COM
External +24V
power supply
Provide +24 V power supply externally. Generally, it
provides power supply to DI/DO terminals and
external sensors.
Maximum output current: 200 mA
Power
supply
OP
I/O port power
supply
It is connected to +24V using a jumper bar at delivery.
When external power supply is required, connect this
terminal to the external power supply and remove the
jumper bar.
AI AI3-GND AI3
1. Input range: 0–10 VDC /4–20 mA, decided by
jumper JK3 on the extension card (0–10 VDC by
default at delivery)
2. Input impedance: 100 k (voltage input), 500
(current input)
DI6-COM DI6
DI7-COM DI 7
DI8-COM DI 8
DI9-COM DI 9
DI
DI10-COM DI 10
1. Optical coupling isolation, compatible with dual
polarity input
2. Input impedance:3.3 k
3. Voltage range for level input: 9–30 V
AO AO2-GND AO2
1. Voltage output or current output determined by
jumper JK4 (voltage output by default at delivery).
2. Output voltage range: 0–10 V
3. Output current range: 0–20 mA
DO DO2-CME DO2
1. Optical coupling isolation, dual polarity
open-collector output
2. Output voltage range: 0–24 V
3. Output current range: 0–50 mA
Note that CME and COM are internally insulated, but
they are short-circuited externally by using a jumper
at use. If DO2 needs to be driven by external power
supply, remove the jumper.
Relay
P/A- P/B NC terminal
Contact driving capacity:
efesotomas
on.com
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