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4 Channel 2AI / 2AO Module DMB 96400

4 Fully Isolated Analog I/O Channels, Modbus RTU

  • Processing of 4 industrial standard signals
    individually configurable as current or voltage signal
  • 4 galvanic isolated I/O ports
    protection against erroneous measurements due to parasitic voltages or ground loops
  • Protective 5 port separation
    up to 300 V AC/DC, Test voltage 3 kV
  • Fast signal acquisition
    high measuring rate, short processing times
  • In-Rail-Bus connector
    for Modbus and Power Supply allows fast and economical installation
  • Freely scalable
    up to 247 DRAGO Module in one Modbus segment
  • Extremely slim design
    6.2 mm slim housing for a simple and space saving DIN rail mounting
  • Made in Germany
    5 Years Warranty

The Modbus 4 Channel Analog Module provides four fully isolated, independently configurable channels.

Two inputs can be configured as current or voltage inputs. In addition, these can be configured as digital inputs or digital outputs (open collector).

Two outputs can be configured as current or voltage outputs. In addition, these can be configured as digital outputs (active logic 0/10 V).

All parameters can be set via the Modbus RTU interface and via a programming socket behind the front panel. A free PC configuration software also offers extended setting options and extensive diagnostic functions during operation. A subset of the most common settings is also available via DIP switches.

The 5 port isolation ensures reliable decoupling of the channels from each other and from the processing circuit and the power supply. Power supply and Modbus RTU are connected via the rearmounted In-Rail-Bus connection (see Accessories)

Product line

Product line DMB 96400
Device Type Order No.
Modbus 4 Channel 2AI/2AO Module DMB 96400 B

Technical Data

Inputs AI

  Voltage Current
Input signal 0 to 10 V 0 to 20 mA
Input resistance ≥ 100 kΩ ≤ 25 Ω
Overload ≤ 30 V ≤ 100 mA
Additional function DI: 12/24 V (L< 2.0 V H > 8.4 V)
DO: Open collector switching output, ≤ 30 V / ≤ 100 mA (drop voltage ca. 2V)

Output AO

  Voltage Current
Output signal 0 to 10 V 0 to 20 mA
Load ≤ 5 mA (2 kΩ at 10 V) ≤ 12 V (600 Ω at 20 mA)
Residual ripple < 10 mVrms  
Additional function DO: active switching output 0/10 V

Modbus

Protocol Modbus RTU (RS485)
Module addressing 1 to 247
Response delay 1 to 1000 ms
Baud rate 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Configuration Parity: Even, Odd, None 2 stop bit, None 1 stop bit
Connectivity Up to 247 DRAGO Modbus devices without additional repeater (1/8 Load)

General Data

Measuring error < 0.1 % full scale
Temperature coefficient1) < 100 ppm/K
Resolution 14 bit
Test voltage 3 kV AC, 50 Hz, 1 min. All channels against each other and against
Modbus/power supply
Working voltage2)
(Basic insulation)
600 V AC/DC for overvoltage category II and pollution degree 2
acc. to EN 61010-1
Protection against dangerous
body currents1)
Protective Separation by reinforced insulation acc. to DIN EN 61010-1
up to 300 V AC/DC for overvoltage category II and contamination
class 2 between input and Modbus/power supply
Ambient temperature Operation: -25 °C bis +70 °C (-13 bis +158 °F)
Transport and storage: -40 °C to +85 °C (-40 to +185 °F)
Power supply 24 V DC, voltage range 16.8 V to 31.2 V DC, max. 1.0 W
via In-Rail-Bus (see Accessories)
EMC2) EN 61326-1
Construction 6.2 mm (0.244") housing, protection type: IP 20,
mounting on 35 mm DIN rail acc. to EN 60715
Connection
Captive plus-minus clamp screws
Wire cross-section 0.5 to 2.5 mm² / AWG 20-14
Stripped length: 8 mm / 0.3 in
Screw terminal torque 0.6 Nm / 5 lbf in
Power connection via In-Rail-Bus (see accessories)
Weight Approx. 70 g
  1. Average TC related to full scale value in specified operating temperature range, reference temperature 23 °C
  2. For applications with high working voltages, ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
  3. Minor deviations possible during interference

Block diagram

Dimensions

Terminal assignments

  • 1 +U / −I ... Input 1
  • 2 -U / +I
  • 3 +U / −I ... Input 2
  • 4 -U / +I
  • 5 + Output 1
  • 6 − Output 1
  • 7 + Output 2
  • 8 − Output 2
  • A Modbus A
  • B Modbus B
  • C − Power supply 24 V DC
  • D + Power supply 24 V DC

Subject to change!

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