What can you do if the building automation systems are getting old?

Taking a look at security and reliability within the area of building and process automation, it is obvious that a lot has happened, also though the changed legislation. Outdated technology and worn-out switching devices are dangerous for users and personnel and have to be replaced, modernised or repaired for the purpose of safe operation.

The requirements on the functionality of machines and plants have changed considerably. Plant operators demand the logging of individual processes. The input of parameters shall not be performed by the operator but by a superordinate control centre.

Spare parts and service, construction sizes and specifications have changed and it will be more and more difficult to procure spare parts for older plants. Software updates are not supported by older CPUs anymore and current requirements cannot be integrated into the outdated software.

Our solution: DIGICONTROL Retrofit ems4.RF01E

The retrofit module ems4.RF01E enables the efficient extension, refurbishment and repair of existing DIGICONTROL PCD 1-, PCD 2-, PCD 4-, PCD 1.NT, Saia PCD1, PCD2 and PCD4- automation systems while reusing the existing I/O automation hardware. Only the CPU module will be exchanged.

The switch cabinet control and the existing building management system can be kept. The costs for the reconstruction are much lower as only the required automation station modules have to be replaces/extended instead of replacing the complete system.

Savings of up to 45% when using DIGICONTROL Retrofit are realistic.

Where is Retrofit used?

The use of the ems4.RF01E is recommended if new functions and requirements have to be implemented in an existing DIGICONTROL automation system without replacing the existing hardware.


There are versatile applications:

Repair defective AS hardware.

To perform the migration – the customisation of existing building automation systems to new circumstances within a building.

To extend the existing building automation system by additional building parts and components of the technical building equipment.

To integrate further technical building equipment systems in the building automation system.

Saia PCD1, PCD2.M120, PCD2.M150, PCD2.M170, PCD2.M480 and PCD4 – automation systems can be brought up-to-date with the latest standards of measuring, control and regulation technology.

To modernise building automation systems compliant to the BACnet standard without the need of replacing the automation station hardware.

To modernise building automation systems compliant to HB GA 3.0 without the need of replacing the automation station hardware.

To implement a technical energy management system in accordance with ISO 50001 by means of WEBENCON.

DIGICONTROL Retrofit module


Communication interface for the integration in existing DIGICONTROL systems

The DIGICONTROL Retrofit module ems4.RF01E enables the connection of ems automation stations to older types of input/output cards (I/O cards) in existing plants.