The Extension features 8 potential free relay outputs, 12 digital inputs, 4 analogue 0-10V inputs and 4 analogue 0-10V outputs.

The digital inputs can also be used as frequency counters, to connect for example S0 meters or wind sensors that transmit pulses.

The analogue inputs can also be used as digital inputs.

Datasheet Extension

Table of Contents


The Extension is installed on a DIN rail in a suitable enclosure.

Connect the power supply and Link communication to the Miniserver.

Connect the loads to the relay terminals. You will find various connection examples below.

Many electronic loads such as ballasts, power supplies, LED drivers and high voltage LED lamps can draw high inrush currents of over 20A. Use inrush current limiters or a coupling relay with the necessary current rating for such cases.

If the devices are connected to different power supplies, it is essential that the GNDs are interconnected.

The Extension starts after switching on the power supply, and the status LED will flash orange after a short time when the connection to the Miniserver is established.

Then follow the pairing procedure on the Link Interface.

Wiring examples

Connecting switches and loads

Connecting coupling relays for higher load switching

Connect sensors with open collector outputs

Connecting a 230V motion sensor to a digital input

Connecting 0-10V temperature sensors

Connecting analogue actuators (0-10V)


Summary Unit Value Range
Input 1 Digital 0/1
Input 2 Digital 0/1
Input 3 Digital 0/1
Input 4 Digital 0/1
Input 5 Digital 0/1
Input 6 Digital 0/1
Input 7 Digital 0/1
Input 8 Digital 0/1
Input 9 Digital 0/1
Input 10 Digital 0/1
Input 11 Digital 0/1
Input 12 Digital 0/1
Voltage 1 -
Voltage 2 -
Voltage 3 -
Voltage 4 -


Summary Unit Value Range
Actuator (Relay) 1 Digital 0/1
Actuator (Relay) 2 Digital 0/1
Actuator (Relay) 3 Digital 0/1
Actuator (Relay) 4 Digital 0/1
Actuator (Relay) 5 Digital 0/1
Actuator (Relay) 6 Digital 0/1
Actuator (Relay) 7 Digital 0/1
Actuator (Relay) 8 Digital 0/1
Voltage 1 -
Voltage 2 -
Voltage 3 -
Voltage 4 -

Diagnostic Inputs

Summary Description Unit Value Range
Online Status Extension Indicates whether the device can be reached by the Miniserver.
Diagnostics for Air devices
Diagnostics for Tree devices
Diagnostics for Extensions
Digital 0/1
System temperature Provides the internal device temperature.
This is often the temperature of the CPU or another location in the device.
Temperature Shutdown If the CPU temperature reaches a critical point, the outputs of the device are switched off. This can be due to short-circuits, overloaded switching loads or too high an ambient temperature. Digital 0/1


Summary Description Default Value
Serial Number Specifies the serial number of the device.
For Extensions: Enter 'Auto' to automatically pair an extension with unknown serial number.
This can only be used if there is only one Extension of the same type.
Save into the Miniserver, in order to pair the Extension.
Afterwards the program must be loaded from the Miniserver to transfer the actual serial number of the Extension into the program.
Monitor Online Status When selected, you will be notified via System Status or the Mailer if the device is no longer available or goes offline. -

Safety Instructions

Installation must be carried out by a qualified electrician in accordance with the applicable regulations.

This device must be mounted on a DIN rail in an electrical distribution enclosure to ensure protection against contact, water and dust.

This device must not be used as part of safety-critical systems.


Datasheet Extension

Datasheet Relay

Thermal Shutdown Temperatures