Fig. 31: Connection of Pt100 temperature sensors in 3-wire configuration
In order to keep measuring errors as small as possible, it is necessary to have all the involved
conductors in the same cable. All the conductors must have the same cross section.
Measuring values above range, below range and wire breaks are monitored and indicated.
For further information on protective function, error indication and diagnosis, please refer to the
AC500 documentation.
Data
Value
Input signal voltage
● Signal 0
● Undefined signal state
● Signal 1
24 V DC
● -30 V ... +5 V
● +5 V ... +13 V
● +13 V ... +30 V
Input resistance
approx. 3.5 kΩ
Conversion cycle
1 ms (for 4 2 outputs)
1 s when measuring with resistance thermom-
eter Pt/Ni
ZP serves as reference signal for the inputs.
Use of analog
inputs as digital
inputs
AC31 Adapters
Replacement devices: CPU > Replacement device 07KT9x-AD
2018/09/24
3ADR010122, 8, en_US
40
