Metz Connect - 4 Channel Triac Output Module - BMT-F-TO4 BACnet MS/TP

Brand: Metz Connect

Metz Connect - 4 Channel Triac Output Module - BMT-F-TO4 BACnet MS/TP

Four solid state triac outputs on BACnet MS/TP. Manufacturer part number 1108801370.

The BMT-F-TO4 is a BACnet MS/TP module with four digital triac outputs for decentralized switching of relays, contactors and HVAC valves. Outputs are commanded through BACnet standard objects from a client, and can also be overridden manually with switches on the device, which is useful during commissioning and service.

It is the solid state counterpart to the relay-based BMT-F-DO4 on the same RS-485 trunk. Because triacs switch without mechanical contacts, this is the right module where the head end needs high cycle counts or fast pulse-width control that would wear out a relay - Growlink specifies it for driving dosing pumps such as HE Anderson units. It draws the same 24 V supply and uses the same addressing as the rest of the family.

Key Features

• Four digital triac outputs
• Switching voltage 24 V AC to 250 V AC maximum
• Continuous current 0.5 A per triac
• Inrush 0.8 A for under 30 s, 10 A for under 20 ms
• Total current across all outputs 2.4 A
• Manual override switches on the device
• Supply current 100 mA AC / 40 mA DC maximum
• Weight 95 g
• Overvoltage category III / II, pollution degree 2, 4 kV rated test voltage
• BACnet MS/TP over RS-485 two-wire, bus or line topology, terminate with 120 Ohm
• Address range 00 to F9 set by two rotary switches on the front
• 9600 to 115200 bit/s, default 9600, no parity, 1 stop bit
• 24 V AC/DC plus or minus 10 percent (SELV), 100 percent duty cycle
• DIN TH35 rail per IEC 60715, any mounting position, side by side without spacing
• 35 x 69.3 x 60 mm (1.378 x 2.728 x 2.362 in)
• IP40 housing / IP20 terminals per IEC 60529
• Operating -5 C to 55 C (23 F to 131 F), storage -20 C to 70 C, 85 percent RH non-condensing
• Spring clamp push-in terminals, 0.2 to 2.5 sq mm solid / AWG 24-14 - the -F- suffix denotes push-in versus screw
• Green, red and yellow status LEDs
• UL Open Energy Management Equipment 34TZ; cULus Listed and CE marked
• Reaches a BACnet/IP supervisor through the BMT-F-RTR router
• Maximum 15 modules or 2 A per supply connection

Ideal Applications

• High cycle dosing and injection pump control including HE Anderson pumps
• Switching contactors and relays for line voltage equipment to 250 V AC
• HVAC valve and damper actuator switching
• Duty cycle control of heaters and small loads where relay life is the limiting factor