Moeller XIOC, Hardware And Engineering

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Technical data
04/03 AWB2725-1452GB
46
Temperature acquisition module
h More information on the temperature acquisition module
can be found in Chapter 2 from Page 15 onwards.
Type XIOC-4T-PT
Platinum RTD Pt100 (IEC 751) / Pt1000
Temperature resolution 15 bit, with sign
Accuracy
1)
–20 to 40 °C (Pt100) G 0.5 °C
–50 to 400 °C (Pt100) G 3 °C
–50 to 400 °C (Pt1000) G 6 °C
Temperature measurement range –20 to +40 °C / –50 to +400 °C (constant current 2 mA)
Number of inputs 4
Conversion time Typ. 1 second for 4 channels
Electrical isolation
Between inputs and the I/O bus Through optocoupler
Between inputs –
External supply voltage 24 V DC
Internal current consumption Max. 200 mA
External resistance Max. 400
O
/channel
External cabling Shielded cable
Additional functions Linearisation
Fault detection
–20 to +40 °C
–50 to +400 °C The resistance value is 7FFF
hex
at:
F –25 °C or f 45 °C
F –60 °C or f 410 °C
Response to cable break or unused inputs In this case, the resistance is 7FFF
hex
.
Weight 0.18 kg
1) The quoted accuracy applies after 10 minutes of operation. The maximum temperature deviation can
be somewhat larger just after the start. The characteristics of the RTD resistor must also be checked
for correctness.
Figure 58: Module wiring
Figure 59: Terminal assignments for
module XIOC-4T-PT
+24 V H
0 V H
b0
B0
b1
B1
b2
B2
b3
B3
A0
A1
A2
A3
0 V
24 V H
A0
B0
b0
A3
B3
b3
RTD
RTD
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