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4 Channel Relay Module DMB 96800

4 independent power relays, Modbus RTU

  • 4 channels
    4 independent power relays
  • Programmable
    switch-ON and switch-OFF behavior
  • Extensive programmable operating functions
    such as limit value monitoring
  • Protective 5-way separation
    up to 300 V AC/DC, test voltage 3 kV
  • Status indication
    for each relay
  • In-Rail-Bus Connector
    for Modbus and power supply
  • Extremly slim
    only 6.2 mm installation width
  • Made in Germany
    5 Years Warranty

The Modbus 4-channel relay module can be used to switch four electrically isolated relays via a Modbus interface. Various time functions can be used to influence the switching behaviour. All parameters can be set via Modbus RTU Interface. A subset of the most common settings is available via DIP switches.

The 5-way isolation guarantees reliable decoupling of the outputs from the processing circuit and the auxiliary power circuit. Auxiliary power and Modbus RTU must be connected via the In-Rail-Bus connector (see accessories).

Product line

Product line DMB 96800

Order No.
Screw
Connection
Push-In
Connection
Modbus 4 Channel Relay Module,
In-Rail-Bus for power supply and Modbus connection
DMB 96800 B DMB 96804 B

Technical Data

Output

Relay 1, 2, 3, 4 250 V AC / 30 V DC / 2 A
Indication Yellow LED for each channel on front panel

Modbus

Protocol Modbus RTU (RS485)
Module addressing 1 to 247
Response delay 1 to 1000 ms
Baudrate 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Configuration Parity: Even, Odd, None with 2 Stop bits, None with 1 Stop bit
Connectivity Up to 247 DRAGO Modbus devices without additional repeater (1/8 Load)
Indication Yellow LED on front panel

General Data

Test voltage 3 kV AC, 50 Hz, 1 min., All Relays against each other and against
Modbus/power supply
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 to +70 °C (-13 to +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, approx. 0.7 W
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)
Solid: 0.5 mm2 - 4 mm2 / AWG 20-12
Fine-stranded: 0.5 mm2 - 2.5 mm2 / AWG 20-14
Stripped length: 6-8 mm / 0.28 in
Screw terminal torque 0.8 Nm / 7 lbf in
Weight Approx. 70 g
  1. As far as relevant the standards and rules mentioned above are considered by development and production of our devices. In addition relevant assembly rules are to be considered by installation of our devices in other equipment. For applications with high working voltages, take measures to prevent accidental contact and make sure that there is sufficient distance or insulation between adjacent situated devices.
  2. Minor deviations possible during interference

Block diagram

Dimensions

Terminal assignments

  • 1 Relay 1
  • 2 Relay 1
  • 3 Relay 2
  • 4 Relay 2
  • 5 Relay 3
  • 6 Relay 3
  • 7 Relay 4
  • 8 Relay 4
  • 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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