ABB AC500 V3 Hardware Manual page 464

Device specifications
I/O modules > Analog I/O modules
Fig. 42: Connection example
The following operating mode can be configured
on page 472 :
Digital input
Effect of incorrect input ter-
minal connection
For a description of the function of the LEDs, please refer to Diagnosis and displays / displays
Ä Chapter 1.6.2.2.3.7 "Diagnosis" on page 475.
Connection of resistance thermometers in 2-wire configuration
When resistance thermometers (Pt100, Pt1000, Ni1000, Cu50) are used, a constant current
must flow through them to build the necessary voltage drop for the evaluation. For this, the
module AI531 provides a constant current source which is multiplexed over the 4 analog chan-
nels.
Fig. 43: Connection example
The following measuring ranges can be configured
on page 472:
464
UP
ZP
24 V
3ADR010278, 3, en_US
1.0
I0-
1.1
I0B
PTC
1.8
UP
1.9
ZP
Ä Chapter 1.6.2.2.3.6 "Parameterization"
1 channel used
Wrong or no signal detected,
no damage up to 35 V
Ä Chapter 1.6.2.2.3.6 "Parameterization"
2.0
I0+
2.1
I0A
2.8
UP
2.9
ZP
2022/01/31