Product data

Extinguishing control unit BN-221/01

Unit for monitoring and control of extinguishing equipment. IP67. For AutroSafe/AutroSafe IFG only.

Note that the extinguishing control application requires feedback within 10 seconds after the release of the extinguishing media to avoid a faulty release message.

The unit has two monitored inputs

  • Input A: extinguishing media
  • Input B: trigger gas.

If the system does not have trigger gas, input B can be disabled by connecting a 2k resistor on the terminals. In addition, the unit has one monitored relay output.

The extinguishing equipment is powered from a separate 24 VDC supply. The interface unit is used in the AutroSafe interactive fire detection system, and it is connected directly to a detection loop. BN-221/01 monitors the presence of power supply. The unit will give a fault warning in case of power failure or loss of power.

Part number: 116-BN-221/01