ABB AX521 User Manual

8.4 Connection
1 I/O bus
2 Allocation between terminal number and signal name
3 3 yellow LEDs to display the signal states of the encoder 0 input
4 3 yellow LEDs to display the signal states of the encoder 1 input
5 2 green LEDs to display the 5-V-power-supply states
6 2 yellow LEDs to display the signal state of the digital input I3 and I11
7 8 yellow LEDs to display the input/output signal states
8 2 yellow LEDs to display the signal states of the PWM/pulse outputs
9 1 green LED to display the process supply voltage UP
10 3 red LEDs to display errors
11 Label
12 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.
CD522
Connection
2019/11/15 3ADR024117M02xx, 11, en_US 65

ABB AX521 Specifications

General

Brand	ABB
Model	AX521
Category	I/O Systems
Language	English