ABB AC31 - Analog inputs

For further information, please refer to the existing documentation
System description Advant Controller 31.
Analog inputs
Data Value
Number of channels per device 8
Connections Connector X4 (terminals 3.0 … 3.3 and 7.0…
7.3)
Division of channels in groups 1 group with 8 channels (evenly distributed
among the modules DA501 and DA502 inter-
nally)
Common reference potential for analog inputs
(8 channels)
AGND1 (terminals 3.0 … 3.3 and 7.0…7.3)
Caution: internal reference to ZP via PTC
resistors
Fig. 18
Electrical isolation No Fig. 18
Max. permissible potential difference between
terminal ZP (minus the supply voltage) and
terminals AGND (minus the analog inputs and
outputs)
± 1 V
Caution: The internal reference is no longer M
but ZP.
Ä Further information on page 25
Indication of the input signals 8 yellow LEDs to indicate the signal statuses
of the analog inputs (4 LEDs per DA501
module and DA502 module)
Configurability (optional per channel)
Ä Chapter 1.4.1.3.1.2 “Connection of the
supply voltage” on page 26
0 ... 10 V, ± 10 V (also with differential signal),
0 ... 20 mA, 4 ... 20 mA
Pt100 -50 ... +400 °C and -50 ... +70°C
Pt1000 -50…+400 °C (2-wire and 3-wire con-
figuration)
Digital input
Input resistance per channel:
-> Voltage input > 100 kΩ
-> Current input approx. 330 kΩ
-> Digital input approx. 3.5 kΩ
Time constant of the input filter Voltage: 100 µs, current: 100 µs
Conversion cycle 1 ms (for 4 inputs and 2 outputs)
1 s when measuring with resistance thermom-
eter Pt/Ni
The "Examples for the conversion cycle" from the existing documentation
07KT98 are no longer valid.
AC31 Adapters
Replacement devices: CPU > Replacement device 07KT9x-AD
2018/09/24 3ADR010122, 8, en_US 49