Signal Converter Modbus 8 Relay Output - DAT3138

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DAT 3138
210.00 Grams
  • Datexel Signal Converter Modbus 8 Relay Output - DAT3138
  • Signal Converter Modbus 8 Relay Output - DAT3138


Datexel Signal Converter Modbus 8 Relay Output - DAT3138

CE mark, Watch-Dog Alarm, 8 Relay Output, Highly Accurate – High Quality

The device DAT3138 is able to drive up to 8 relay outputs SPDT. The data are transmitted with MODBUS RTU / MODBUS ASCII protocol over the RS-485 network.

To ensure the plant safety, a Watch-Dog timer alarm is 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 device is housed in a rough self-extinguishing plastic container which allows a high density mounting on EN-50022 standard DIN rail.


The device 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 signal Converter DAT3138:

  • Modbus Slave device on RS-485
  • Modbus RTU/ Modbus ASCII protocol
  • 8 relay outputs SPDT
  • Communication parameters configurable by PC
  • Watch-Dog Alarm
  • Remotely Configurable
  • 1500 Vac 3-ways Galvanic Isolation
  • LEDs of signaling on front side for power supply and communication
  • LEDs of signaling on front side for digital inputs and outputs state
  • Connection by removable screw terminals
  • High Accuracy
  • CE mark
  • DIN rail mounting in compliance with EN-50022



  • Channel 8
  • Type N° 8 relays SPDT
  • Maximum Switching Power
  • Resistive load - per contact 2 A @ 250 Vca, 2 A @ 30 Vdc
  • Max. voltage 250Vca (50 / 60 Hz), 30Vdc
  • Dielectric strength between contacts, 1000 Vca, 50 Hz, 1 min.
  • Dielectric strength between coil and contacts 4000 Vca, 50 Hz, 1 min.


Data Transmission (RS-485 asynchronous serial)

  • Baud Rate up to 115.2 Kbps
  • Max. distance 1.2 Km – 4000 ft
  • Protocol Modbus RTU/Modbus ASCII
  • Serial Interface RS485 (2 wires)


  • Power supply voltage 20 .. 30 Vdc
  • Reverse polarity protection 60 Vdc max
  • Current consumption (stand-by) 20 mA @ 24 Vdc
  • Current consumption (relays operative) 100 mA max@24Vdc, 90 mA max@20Vdc


  • Between all the ways (RS485, power supply, digital outputs) 1500 Vac, 50 Hz, 1 min


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


  • Material Self-extinguish plastic
  • IP Code IP20
  • Wiring wires with diameter 0.8÷2.1 mm2 /AWG 14-18
  • Tightening Torque 0.5 N m
  • Mounting in compliance with DIN rail standard EN-50022
  • Weight about 210 g


  • EMC (for industrial environments) Immunity EN 61000-6-2 Emission EN 61000-6-4


Series Information

About Datexel:

Founded in 1992 from the commitment and aspiration of several partners as a small provincial company, through the years DATEXEL has become an established reality on Italian and international markets as a manufacturer of electronic equipment for industrial automation and control process.

The range of DATEXEL products includes: Transmitters, signal and temperature Converters (both analogue and digital), galvanic Isolators, signal Splitters, I/O Modules, Trip Amplifiers, Power Supply Units, current loop Isolators, analogue and digital Displays.


To View Data Sheet for Datexel Signal Converter Modbus 8 Relay Output - DAT3138 Please Click Here
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Warranty Information

One Year Warranty
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Additional Information

8 Channel Type N° 8 relays SPDT
Data Transmission (RS-485 asynchronous
Power Supply:
10 - 30 Vdc. Reverse polarity protection 60 Vdc
Current Consumption:
20 to 100 mA
Temperature rating::
Operative Temperature -14°F +140°F -10°C +60°C
(not condensing) 0-90%
Material self-extinguishing
W x L x H 3 3/4X 3 1/2 X 1 7/8 inch, 90 x 74 x 48mm
200 g.
For industrial environments Immunity EN 61000-6-2 Emission EN 61000-6-4.
Between Modbus Master, Slave/Power supply 1500Vac, 50Hz, 1 Minute
PC Configurable
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