Addressable Module 1 Technical Input & 1 Free Relay Output with Isolator

Referencia: MAD-421-I


The range of MAD-400 modules has been developed to offer a wide and complete range of input and output ports to be used with Detnov's CAD-150 family of analogue fire control panels. These modules let you manage a wide variety of situations, by monitoring and acting according to the installation's requirements.

The MAD-400 modules have been designed to facilitate their installation process, and they may be installed using screws or fitted into a DIN rail. Each module is equipped with removable terminal blocks and a LED status indicator. The addressing of the modules is carried out through the PGD-200 programmer.

The MAD-421-I module provides 1 technical input and 1 free contact relay output, and MAD-422-I provides 2 technical inputs and 2 free contact relays outputs. The inputs can be used to monitorize any external event to the fire system, and the outputs can be used to switch some peripheral circuits on and off. In any case, all inputs and outputs operate individually, providing a broad range of configuration options. Both devices are powered directly from the loop.

Technical inputs can be configured through a micro-switch to operate as NC or NO, and there is the option to select between supervised and non-supervised input.

The isolator  protects the system from short circuits in the loop, and its function is to disconnect the loop section between the 2 isolators that are nearest to the short circuit, allowing the rest of the installation to work without trouble. 


     Simple installation on the wall or fitted into a DIN rail
     Non-polarity supported
     Addressing through a programmer
     Stable communication protocol with immunity to noise
     Loop-powered device
     Connections through removable terminal block, and simple fitting of the cable
     EN54-18 and EN54-17 approved


The MAD-421-I and MAD-422-I modules are usually installed to supervise NO or NC contacts or to integrate with other systems that can be managed through a free contact relay.

Technical features

Loop features:
   Operating voltage: From 22 to 38VDC
   Quiescent current consumption: < 300 μA
   Alarm current consumption: < 3 mA
Technical input through a NO or NC contact (configurable)
Relay contacts: 1A at 30VDC

2 x 1.5 mm2 twisted and shielded cable
Operating temperature: From -10ºC to +70ºC
Relative humidity: 95% without condensation
IP Index: IP40

Physical features
Size: 100 mm x 82 mm x 23 mm
Size with removable terminal: 100 mm x 100 mm x 23 mm
Material: ABS

EN54-18 and EN54-17
Certificate number: 0370-CPR-1863


Size: 100 mm x 82 mm x 23 mm
Size with removable terminal: 100 mm x 100 mm x 23 mm


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