Technical Data; Inputs; Resistance Thermometers; Input Signals - Siemens RWF50.3 User Manual

Building Technologies Division
Infrastructure & Cities Sector
12

Technical data

12.1 Inputs

12.1.1 Resistance thermometers

Type
Pt100; DIN EN 60751
Pt1000; DIN EN 60751
LG-Ni1000
0...135 
a Accuracies relate to the maximum measuring range.
Line resistance
Line balancing

12.1.2 Input signals

Measuring range
Voltage DC 0...10 V
Input resistance R >2 M
E
Voltage DC 0(1)...5 V
Input resistance R >2 M
E
Current 0(4)...20 mA
Voltage drop 2 V
a Accuracies relate to the maximum measuring range.

12.1.3 Binary input D1

Potentialfree contact for the following functions, depending on the configuration:
No function
-
Setpoint readjustment
-
Setpoint changeover
-
Operating mode changeover
-
User Manual RWF50...
12 Technical data
Measuring Measuring
range accuracy
0.1%
-200...850 °C
(-328...1562 °F)
0.1%
-200...850 °C
(-328...1562 °F)
0.1%
-50...+160 °C
(-58...320 °F)
0.25%
Max. 30  per line with 3-wire circuit
Not required with 3-wire circuits.
With 2-wire circuits, line balancing can be
performed by making an actual value
correction
Measuring
a
accuracy
0.1%
0.2%
0.1%
Impact of
a
ambient
temperature
50 ppm/K
50 ppm/K
50 ppm/K
50 ppm/K
Impact of ambient
temperature
100 ppm/K
200 ppm/K
100 ppm/K
55/64
CC1U7866en
25.07.2014