Rev. 1.0
WALTHER Temperature Controller Bundle WTRB-x-x
Page 17 of 42
Walther Systemtechnik GmbH
– D 76726 Germersheim
Telefon: +49 (0)7274-7022-0 Telefax: +49 (0)7274-7022-91
http://www.walther-2000.de
6.1.1 Technical Information for WTR-24DC
Input Resistance Thermometer (Pins 8; 9; 10)
Description
Measured range
Measuring
accuracy
Ambient temperature influence
PT100 2-wire connec-
tion according to
DIN EN 60751
-
200 … +650 [°C]
≤ 0,4 [%]
≤ 100 [ppm/K]
Sensor line resistance: max. 30 [Ω] per line with a three-wire circuit
Measured current: PT100 ca. 1 [mA]
Line balancing:
For a two-wire circuit, a line balancing can be performed through a correction of the actual value (see
chapter 7.3 Configuration (ConF)).
Outputs
Relay (make contact)
(Pins 4/5 and 6/7)
Switch capacity/
Contact lifetime
max. 3 [A[ at 230 [VAC[ resistive load
150.000 switches at nominal load
350.000 switches at 1 [A[
310.000 switches at 1 [A[ and cos
ϕ > 0,7
Logic output for SSR
(Pins 13/14)
0/14 [V] 20 [mA] max.
Controller
Controller type
Two-point controller, three-point controller, permanent controller
Controller structure
P/PI/PD/PID
Scan time
250 [ms]
A/D convertor
Resolution 16 Bit
Timer
Accuracy
0,8 [%] ± [ppm/K] ± 250 [ms]
Electrical Data
Voltage supply (power supply)
AC/DC 20 … 30 [V], 48 … 63 [Hz]
Electrical safety
According to DIN EN 61010, Part 1
Overvoltage Category III, Degree of Con-
tamination 2
Power consumption
max. 14 VA
Electrical connection /
Wire diameter /
Tightening torque
From back with screw terminal; with wire
end ferrule (pipe shape), open cable lug or
terminal pin, fine-stranded wire 0,25 ... 1,5
[mm²] 0,5 [Nm]
Electromagnetic compatibility
– emitted interference – inter-
ference immunity
According to DIN EN 61326-1 Class A
– for
industrial use only
– industrial requirement
Setup interface
USB socket, type Mini-B 5-poles
