NOVUS DigiRail-2A - Manual (Page 2)

DigiRail-2A
NOVUS AUTOMATION 2/2
SPECIFICATIONS
Inputs: 2 universal analog inputs.
Input signals: Configurable. Refer to Table 1.
Thermocouples: Types J, K, T, R, S, B, N and E, according to
NBR 12771. Impedance >> 1M
Ω
Pt100: 3 wires type,
α
= .00385, NBR 13773, Excitation of 700
µ
A.
For using Pt100 2 wires, interconnect terminals 2 and 3.
When gauging the module using the calibrator for
Pt100, be sure that the minimum current required for
it is compatible with the specified excitation current:
700
µ
A.
Other Signals:
•
0 to 20 mV, -10 to 20 mV, 0 to 50 mV.
Impedance >> 1 M
Ω
•
0 to 5 Vdc, 0 to 10 Vdc. Impedance >> 1 M
Ω
•
0 to 20 mA, 4 to 20 mA.
Impedance = 100
Ω
(+ 1.7 Vdc)
Overall accuracy (at 25°C): Thermocouples: 0.25% of the
maximum range,
±
1°C; Pt100, voltage and current: 0.15% of the
maximum range;
Input Signal Maximum Measuring Range
Thermocouple J -130 to 940 °C (-202 to 1724 ºF)
Thermocouple K -200 to 1370 °C (-328 to 2498 ºF)
Thermocouple T -200 to 400 °C (-328 to 752 ºF)
Thermocouple E -100 to 720 °C (-148 to 1328 ºF)
Thermocouple N -200 to 1,300 °C (-328 to 2372 ºF)
Thermocouple R 0 to 1760 °C (-32 to 3200 ºF)
Thermocouple S 0 to 1760 °C (-32 to 3200 ºF)
Thermocouple B 500 to 1800 °C (932 to 3272 ºF)
Pt100 -200 to 650°C (-328 to 1202 ºF)
0 to 20 mV
-10 to 20 mV
0 to 50 mV
* 0 to 5 Vdc Adjustable between -31000 and +31000
* 0 to 10 Vdc
0 to 20 mA
4 to 20 mA
Table 1 – Sensors and signals accepted by the module
Sampling rate: from 2.5 to 10 samples per second
Internal compensation of cold junction for thermocouples
Power: 10 to 35 Vdc / 50 mA maximum. Internal protection against
polarity inversion.
Electrical insulation between inputs and supply/serial port:
1000 Vac
Serial communication: RS485 at two wires, Modbus RTU protocol.
Configurable parameters: Communication speed: from 1200 to
115200 bps; Parity: even, odd or none
Key for restoring communication parameters: The RCom key, at
the front panel, will set the device in diagnostics mode (address
246, baud rate 1200, parity even, 1 stop bit), able to be detected
and configured by the DigiConfig software.
Frontal light indicators for communication and status:
TX: Signalizes that the device is sending data on the
RS485 line;
RX:
Signalizes that the device is receiving data on the
RS485 line;
Status: When the light is permanently on, this means that
the device is in normal operation; when the light is flashing in a
second interval (approximately), this means that the device is in
diagnostics mode; when the light is flashing fast, this means
that there is an internal error.
Electromagnetic compatibility: EN 61326:2000
Operating temperature: 0 to 70 °C
Operational relative humidity: 0 to 90% RH
Envelope of the terminals: Polyamide
Assembly: DIN 35 mm rail
Dimensions: Refer to Figure 3.
Figure 3 – Dimensions
WARRANTY
Warranty conditions are available on our web site
www.novusatomation.com .