The Kentec Sigma XT+ K21021M3 is a multi-area extinguishant control panel with 2 conventional fire detection zones and a single extinguishant area. It combines Sigma CP conventional fire detection with Sigma XT+ extinguishing control modules, giving one integrated control solution for fixed extinguishing systems.
The detection section talks to the extinguishant control modules over a secure, two-way serial link. Each extinguishant area has its own full set of inputs and outputs and is set up through a simple programming interface.
Key features
- Approved to EN 12094-1, EN 54-2 and EN 54-4
- Dual extinguishant outputs for each area, configurable as main/reserve
- First and second stage sounder outputs for each area
- First and second stage volt-free changeover contacts for each area, plus released and fault volt-free contacts per area
- Programmable extinguishant delay and output duration
- Countdown indicator showing the time until release in seconds
- Mode select and manual release controls per area
- Monitored inputs for remote manual release, hold, mode select (door interlock), released pressure switch, low pressure switch and abort
- Serial connection for up to 7 Sigma Si status units or ancillary boards per extinguishant area
- Up to 7 Sigma CP ancillary boards (K580) or Sigma CP sounder boards (K461) can be added on the RS485 serial bus
Technical specifications
- Product code: K21021M3
- Detection zones: 2
- Extinguishant areas: 1
- Dimensions: 385 x 520 x 110 mm
- Construction: 1.2 mm mild sheet steel, epoxy powder coated, IP30; lid and box BS 00 A 05 grey, controls plate RAL 7047 light grey
- Weight: 8 kg
- Mains supply: 230 V AC 50 Hz +10% / -15% (100 W max.); mains fuse 1.6 A
- Power supply rating: 3 A total including battery charge (28 V +/- 2 V)
- Battery charge voltage: 27.6 V DC nominal (temperature compensated); charge current 0.7 A max.; battery fuse 3.15 A
- Max. current draw from batteries: 3 A
- Current draw in mains fail condition: 54 mA per module
- Aux 24 V output: fused at 500 mA (electronic fuse), one per extinguishant area
- 1st and 2nd stage sounder outputs: 21 to 28 V DC, fused at 1 A (electronic fuse); EOL 10K resistor
- Relay contacts (fault, fire, local fire, first stage, second stage, extract): 5 to 30 V DC, 1 A max. each
- Detection circuits: 21 to 28 V DC; typically 20 detectors per zone (depends on type); EOL 6K8 resistor
- Extinguishant release output: 21 to 28 V DC, fused at 1 A; EOL 1N4004 diode
- Release delay: adjustable 0 to 60 seconds; release duration: adjustable 60 to 300 seconds
- Monitored inputs EOL: 6K8 resistor
- Status unit/ancillary board connection: two-wire RS485 (EIA-485)
- Cabling: FP200 or equivalent; terminals 0.5 to 2.5 mm² solid or stranded
