Datexel Isolated Module Thermocouple to RS485 Modbus - DAT3018

8 input channels, UL/CE mark, Watch-Dog Alarm, Galvanic Isolation – Great Quality

The DAT 3018 device is able to acquire up to 8 analogue input signals. The data are transmitted with MODBUS RTU/MODBUS ASCII protocol on the RS-485 network (RS-232 interface is available).

It is possible to connect on input thermocouples or voltage signals up to ± 1V . The Cold Junction compensation for thermocouples is internally performed.

The device guarantees high accuracy and stable measure versus time and temperature.

To ensure the plant safety, two Watch-Dog timer alarms are provided.

The isolation between the parts of circuit removes eventual ground-loop effects, allowing the use of the device even in the heavy environmental conditions.

The DAT 3018 is in compliance with the Directive UL 61010-1 for US market and with the Directive CSA C22.2 No 61010-1 for the Canadian market.

The device is housed in a rough self-extinguishing plastic container which, thanks to its thin profile of 17.5mm only, allows a high density mounting on EN-50022 standard DIN rail.

COMMUNICATION PROTOCOLS

The DAT3018 is designed to work with the MODBUS RTU/MODBUS ASCII protocol: standard protocol in field-bus; allows to directly interface DAT3000 series devices to the larger part of PLCs and SCADA applications available on the market.

The advantages and features for Datexel Isolated Module DAT3018

• Field-Bus remote data acquisition
• Modbus Slave device on RS-485
• Modbus RTU/ Modbus ASCII protocol
• 8 channels input
• Input configurable for Tc J, K, R, S, B, E, T, N and voltage up to ± 1V
• Watch-Dog Alarm
• Remotely Configurable
• 2000 Vac 3-ways Galvanic Isolation
• High Accuracy
• UL / CE mark
• DIN rail mounting in compliance with EN-50022

INPUT Datexel Isolated Module DAT3018

• Voltage (mV)
• Thermocouple (J, K, R, S, B, E, T, N)

Data Transmission

• Baud Rate 38.4 Kbps
• Max. distance 1.2 Km – 4000 ft

POWER SUPPLY

• Power supply voltage 10 .. 30 Vdc
• Reverse polarity protection 60 Vdc max
• Current Consumption 30 mA max

ISOLATION

• Input – RS485 2000 Vac 50 Hz, 1 min.
• Supply – Input 2000 Vac 50 Hz, 1 min.
• Supply – RS485 2000 Vac 50 Hz, 1 min.

Environmental Conditions

• Operative Temperature -10°C .. +60°C
• UL Operative Temperature -10°C .. +40°C
• Storage Temperature -40°C .. +85°C
• Relative humidity (not cond.) 0 ÷ 90 %
• Maximum Altitude 2000 m
• Installation Indoor
• Category of installation II
• Pollution Degree 2

Mechanical Specifications

• Material Self-extinguish plastic
• IP Code IP20
• Wiring wires with diameter 0.8÷2.1 mm2 /AWG 14-18
• Tightening Torque 0.8 N m
• Mounting in compliance with DIN rail standard EN-50022
• Weight about 150 g

EMC (for industrial environments)

• Immunity EN 61000-6-2
• Emission EN 61000-6-4

UL

• US Standard UL 61010-1