Kentec Sigma XT Ancillary PCB c/w Integral 0.75A PSU, Boxed, Surface Mount, M2 Enclosure (K03750M2)

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