The Kentec K03750M2 is the Sigma XT Ancillary PCB supplied boxed in an M2 size steel enclosure with an integral 0.75A power supply, so it runs from a local 230V AC mains supply. The Sigma XT Ancillary Board is compatible with Sigma XT control panels running operating software version SIGXT_11A.HEX or above, and Kentec lists it (K588) as the ancillary relay board for Syncro XT+ panels. It provides volt-free, normally open contacts so that sub-systems and plant can be controlled remotely from the main panel over a two-wire data bus.
Because it is mains powered, only a two-core data cable is needed from the main control panel.
Key features
- Two-wire RS485 serial connection to the control panel
- Up to 7 ancillary boards per control panel, each addressed 1 to 7 on a binary-coded DIL switch
- Status units and ancillary boards can be mixed on the same serial data bus (up to 7 of each type)
- Volt-free relay outputs for fire and extinguishing system status
- Relay-operated LED indicators
- Total data cable length from the main panel to the last unit must not exceed 1200 metres
Technical specifications
- Product code: K03750M2 (boxed ancillary PCB with 0.75A PSU)
- Supply voltage: 230V AC (+10% / -15%)
- Mains supply fuse: 1.6A 250V
- Power supply DC rating: 24V, 0.75A
- Maximum battery size: 2Ah 24V (2 per panel)
- Boxed size: 385mm (W) x 310mm (H) x 90mm (D)
- Construction: 1.2mm mild steel
- Colour (lid and box): BS 00 A 05 grey, fine texture
- PCB size: 155mm (W) x 136mm (H)
- Contact ratings: 30V DC, 1A
- Cable capacity: 2.5mm² per terminal
- Operating temperature: -5°C to +50°C
- Operating humidity: <95% (non-condensing)
- Data connection: two-wire RS485
