ABB AO523 User Manual

7.4 Connection
1 I/O bus
2 Allocation between terminal number and signal name
3 8 yellow LEDs to display the signal states at the analog inputs (I0 - I7)
4 8 yellow LEDs to display the signal states at the analog outputs (O0 - O7)
5 1 green LED to display the state of the process supply voltage UP
6 2 red LEDs to display errors
7 Label
8 Terminal unit
Sign for XC version
All I/O channels (digital and analog) are protected against reverse polarity,
reverse supply and continuous overvoltage up to 30 VDC.
AX522
Connection
2019/11/15 3ADR024117M02xx, 11, en_US 59

ABB AO523 Specifications

General

ABB Type Designation	AO523
Number of Channels	8
Weight	0.2 kg
Protection Class	IP20
Extended Type Designation	AO523
Output Signal	0/4 to 20 mA
Accuracy	±0.1 %
Galvanic Isolation	Yes
Power Supply	24 V DC
Storage Temperature	-40 to +70 °C
Relative Humidity	5 to 95% non-condensing