Weidmuller ACT20X - Manual (Page 34)

Product Installation / Operation, ACT20X-HTI-SAO (Temperature/mA Converter)
34 1066540000/01/12.11
TC Input, Cold Junction Compensation (CJC)
CJC: external with ACT20X-CJC-HTI
(1160640000 or 1160650000) +20…+28 °C ≤ 1 °C
-20…+20 °C and +28…+60 °C≤ 1.6 °C
CJC via internal sensor
t = internal temperature – ambient temperature
(2.0 °C + 0.2 °C * t)
Sensor error detection (programmable, only wire
breakage) ON/OFF
Sensor error current:
when detecting
else
nom. 2 μA
0 μA
Current Input
Measurement range 0…20 mA
Programmable measurement ranges 0…20 / 4…20 mA
Input resistance nom. 20 Ω + PTC 50 Ω
Sensor error detection (programmable) ON/OFF
Current Output
Programmable signal ranges 0…20 mA / 4…20 mA / 20…0 mA / 20…4 mA
Load max. 4 mA / 600 Ω / 12 V DC
Load stability ≤ 0.01 % of span / 100 Ω
Sensor error detection 0 / 3.5 mA / 23 mA / none
Output limitation:
on 4…20 and 20…4 mA signals
on 0…20 and 20…0 mA signals
3.8…20.5 mA
0…20.5 mA
Current limit ≤ 28 mA
2-wire 4…20 mA Loop Powered Output
Signal range 4…20 mA
Load resistance ≤ (V
supply
– 3.5 V) / 0.023 A [Ω]
Load stability ≤ 0.01 % of span / 100 Ω
Max. external 2-wire supply 3.5…26 V DC
Effect of external 2-wire supply voltage variation < 0.005 % of span / V