Novus TXRAIL Series Operating Manual

INSTALLATION

The transmitter is intended for DIN rail mounting. Its drawing is presented in Figure 04.
Figure 04 – Transmitter dimensions

ELECTRICAL CONNECTIONS

Figure 05 below shows the transmitter connections to the sensor and power supply.
Terminals 1, 2 and 3 are used for sensor input. For 2-wire Pt100, terminals 2 and 3
shall be connected together.
Figure 05 – Transmitter connections – Pt100
Figure 06 – Transmitter connections – Thermocouple
It is important to follow the recommendations below:
Signal wires should be installed in grounded conduits and away from power or
contactor wires.
The instrument should have its own power supply wires, which should not be
shared with electrical motors, coils, contactors, etc.
Installing RC filters is strongly recommended at contactor coils or any other
inductors.
System failure should always be taken into account when designing a control
panel to avoid irreversible damage to equipment or people.

SPECIFICATIONS

Sensor input: User defined. The supported sensors are lited in Table 01, along
with their maximum ranges.
Thermocouples: Types J, K, R, S, T, N and E, according IEC 60584-1 (ITS-90.
Impedance >> 1 M
Pt100: Excitation: 0.18 mA, 2 or 3-wire connection (for 2-wire
sensors, tie terminals 2 and 3 together).
= 0.00385, according to IEC 60751 (ITS-90)
Voltage: 0 to 50 mVdc. Impedance >> 1 M
Sensor Type Range Minimum measurement span
Thermocouple K 0 to 1370 °C
Thermocouple J 0 to 760 °C
Thermocouple R 0 to 1760 °C
Thermocouple S 0 to 1760 °C
Thermocouple T 0 to 400 °C
Thermocouple N 0 to 1300 °C
Thermocouple E 0 to 720 °C
Pt100 -200 to 650 °C
Voltage 0 to 50 mV
Table 01 – Transmitter input sensors
Output: 0 to 10 Vdc, linear with respect to the measured temperature.
Total Accuracy: better than 0.3 % of the maximum range for thermocouples and
0.2 % for Pt100 and voltage (for voltage output above 100 mV).
Resolution: 0.025 V (12 bits)
Maximum Current (Load): 2 mA
Response Time: < 100 ms
Power supply: 18 to 35 Vdc
Operation Temperature: -40 to 85 °C
Humidity: 0 to 90 % RH
Protection: IP40
Electromagnetic compatibility: EN 50081-2, EN 50082-2
No isolation between input, voltage output and power supply.
Internal protection against polarity inversion.
Cold junction compensation for thermocouples.
Housing: ABS plastic. Dimensions: Refer to Figure 04.
T E M P E R A T U R E T R A N S M I T T E R
T X R A I L 0 - 1 0 V D C
O P E R A T I N G M A N U A L
100 °C
100 °C
400 °C
400 °C
100 °C
100 °C
100 °C
40 °C
5 mV
Man 5001496