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Switch Amplifier DG 31000

Input for NAMUR, SN, S0, DC sensor, Contact, V AC/DC, PNP, NPN and Push-Pull, configurable per DIP switches

The configurable switch amplifier DG 31000 is used to capture, amplify and supply of industrial binary signals. A SPST relay or optionally an isolated, passive transistor switch (Open-Collector) is available at the output.

  • Universal Binary Input
    for all common industrial status signals
  • Easily configurable via DIP switches
    Sensor type, action direction and mode of operation directly selectable
  • Switchable timer functions
    Switch-on delay, switch-off delay and wiper function
  • 3-Port Isolation
    Protection against switching errors due to parasitic voltages or ground loops
  • Extremely slim design
    6.2 mm slim housing for a simple and space saving DIN rail mounting
  • Optional In-Rail-Bus mounting rail connector
    Allows fast and cost-effective installation and provides a common fault message
  • Protective separation acc. to EN 61140
    Protects service personnel and downstream devices against impermissibly high voltage
  • 5 Years Warranty
    Defects occurring within 5 years from delivery date shall be remedied free of charge at our plant (carriage and insurance paid by sender)

The switching amplifier detects the status of 2- and 3-wire sensors, binary signals and AC/DC voltages und transmit the state to the switching output. The input is protected against polarity reversal and short circuit. The connected sensors can be supplied by the switching amplifier or externally.

The mode of operation and action direction can be switched with DIP switches. The device has an adjustable switch-on delay, a switch-off delay and a wiper function.

The auxiliary power can be supplied via the connection terminals or via the optional In-Rail-Bus connector. The switching status and the device status are indicated by LEDs on the front panel. If the device is operated via the In-Rail-Bus, a common fault message is available on the status line.

Product line

Product line DG 31000
Device Type Order No.
Switch Amplifier, Relay, configurable per DIP switch DG 31000 S
Switch Amplifier, Relay, configurable per DIP switch,
In-Rail-Bus for power supply and status message
DG 31000 B
Switch Amplifier, Transistor, configurable per DIP switch DG 31080 S
Switch Amplifier, Transistor, configurable per DIP switch,
In-Rail-Bus for power supply and status message
DG 31080 B

Technical Data


2-wire Sensors Terminal 1,2    NAMUR/SN S0 Sensor DC Sensor
Standard    EN 60947-5-6 EN 62053-31, Type B EN 60947-5-2
Sensor supply    8 V 16 V 16V / 25 mA (ext. < 32 V)
Switching point L/H    1.2/2.1 mA 1.2/2.1 mA 2 mA/6 mA
Input resistance    1 kΩ 3 kΩ 1 kΩ
Binary Signal Terminal 1, 2, 3    NPN PNP/Push-Pull Mechanical Contact
Standard    EN 60947-5-2 EN60947-5-2 ON/OFF
Sensor supply    16 V / 25 mA (ext. <32 V) 16 V / 25 mA (ext. <32 V) 16 V / 25 mA (ext. < 32 V)
Switching point L/H    3/5 V 8/10 V 8/10 V
Input resistance    3 kΩ 3 kΩ 3 kΩ
Voltage Terminal 3,4    0 to 300 V AC 50/60 Hz or DC
Switching point L/H   
(preferred range)   
7/15 V (24 V) 40/85 V (115 V) 80/160 V (230 V) switchable
(any voltage up to 300 V permitted)
Input resistance    > 500 kΩ


DG 31000 (Relay): 250 V AC / 30 V DC / 2 A, Recommended minimum load 300 mW / 5 V / 5 mA
DG 31080 (Transistor): 36 V DC / 50 mA, galvanically isolated, not current limited
Response time ≤ 20 ms
Switching functions
Make / break contact,
ON delay, OFF delay or wiper: OFF, 0.5 s, 1 s, 5 s, 10 s
Common fault message Signal on In-Rail-Bus E (supply circuit) at device failure, cable break und short circuit

General Data

Test voltage 3 kV AC, 50 Hz, 1 Min., Input against output against
power supply/In-Rail-Bus
Working voltage1)
(Basic Insulation)
600 V AC/DC for overvoltage category II and pollution
degree 2 acc. to EN 61010-1
Protection against
electrical shock1)
Protective separation according to EN 61140 by reinforced
insulation in accordance with EN 61010-1 up to 300 V AC/DC
for overvoltage category II and pollution degree 2 between all circuits
Ambient temperature Operation
Transport and storage
–25 °C to +70 °C  (-13 to +158 °F)
–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
EMC2) EN 61326-1
UL (USA/Kanada),     UL 61010, Class I, Div. 2
ATEX / IECEx,     Zone 2 (nA)
Construction 6.2 mm (0.244") housing, protection class 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
Weight Approx. 70 g
  1. For applications with high working voltages, ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
  2. Minor deviations possible during interference

Block diagram


Terminal assignments

  • 1 + Sensor supply
  • 2 + Binary input
  • 3 − GND input
  • 4 AC/DC-voltage input
  • 5 Relay
  • 6 Relay
  • 5 + Transistor output
  • 6 − Transistor output
  • 7 + Power supply 24 V DC
    (connected to In-Rail-Bus)
  • 8 − Power supply 24 V DC
    (connected to In-Rail-Bus)

Optional power connection via In-Rail-Bus (see accessories)

Subject to change!

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