BMT-AO4

I/O BACnet MS/TP Module with 4 analog outputs.

For those installations that support a fieldbus solution such as BACnet MS/TP, Contemporary Controls provides solutions for expanding the number of I/O points in the field. These compact cost-effective modules are available with analog and digital inputs and outputs in varying combinations.

The BACnet MS/TP module with 4 analog outputs was developed for decentralized switching tasks. It is suitable as encoder for control variables, for example for electrical vent and mixing valves, valve positions, etc. The outputs can be output by means of standard objects via a BACnet client. The module is addressed and the baud rate is set by means of two address switches on the front.

Specification:

BACnet Interface

• Protocol: BACnet MS/TP
• Transmission rate: 9600 ... 115200 Bd (factory setting 9600 Bd)
• Cabling: RS485 two wire bus with voltage equalizing cable in bus / line topology; terminate with 120 Ohms

Outputs

• Output voltage: 4 x 0 to 10 V DC
• Output current: 5 mA at 10 V DC
• Resolution: 10 mV / Digit

Power Supply

• Operating voltage range: 20~28VAC/VDC (SELV)
• Current consumption: 50 mA (AC) / 20 mA (DC)
• Relative duty cycle: 100%
• Protective circuitry:
• Polarity reversal protection of operating voltage
• Polarity reversal protection of supply and bus

Mechanical

• Casing: Polyamide 6.6 V0
• Cover plate: Polycarbonate
• IP protection: Casing - IP40, Terminal blocks - IP20
• Dimensions (WxHxD): 35 x 70 x 65 mm
• Weight: 72g
• Mounting: DIN rail
• Mounting in series without space: maximum quantity of modules connected in line is limited to 15 or to a maximum power consumption of 2 Amps (AC or DC) per connection to the power supply

Environmental

• Operating temperature: -5°C to 55°C
• Storage temperature: -20°C to 70°C

Manufacturer's warranty: 36 months

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