ABB AC31 Assembly And Operation Manual page 49

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07KT98 are no longer valid.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