Kentec Sigma CP Sounder Controller PCB 24v - Stand Alone (K461)

The Kentec K461 is a Sigma CP sounder board that adds up to 8 extra sounder outputs to Kentec Sigma CP conventional fire alarm control panels. It connects to the panel over a two-core serial data bus and needs its own 24 V power supply, as the Sigma CP panel power supply is not suitable for powering sounder boards.

Each sounder output can be set as common, zonal or two-stage alarm. Up to seven sounder boards can be connected to one control panel, each given an address from 1 to 7 on a DIL switch. The board is compatible with Sigma CP panels running software Sigma242.hex onwards.

Key features

• Up to 8 additional sounder outputs per board
• Outputs configurable as common, zonal or two-stage alarm
• Voltage-reversing outputs monitored for open and short circuit faults
• Up to 7 boards per Sigma CP control panel, addressed by DIL switch
• Two-core RS485 serial data connection to the panel
• Class change and power fault inputs
• Sounder activated and sounder fault LEDs, plus comms and fuse fail indication
• 4 A self-resetting electronic fuse and processor reset button

Technical specifications

• Product code: K461 (stand-alone board)
• Power supply: 21 to 30 V DC (separate power supply required)
• Max. ripple: 200 mV
• Max. current draw: 4 A
• Mains-failed current consumption: 37 mA quiescent, 240 mA alarm
• Sounder output rating: 1 A per output; 4 A total across all outputs
• End-of-line monitoring resistor: 10K 1/4 W
• Class change input: via normally open contact; power fault input: switched -ve
• Cabling: FP200 or equivalent for power; RS485 data cable or FP200 for communications
• Terminal capacity: 0.5 to 2.5 mm² solid or stranded
• Board size: 155 x 135 x 30 mm; four 4 mm fixing holes