The BACnet MS/TP module with 4 digital inputs is designed for local switching operations. It is suitable to record potential-free switch states as for example electrical limit switches of ventilation valves or auxiliary contacts of power contactors. The inputs can be operated by potential-free switches or contacts and as voltage inputs. The inputs can be scanned by standard object via a BACnet-Client. Addressing of the module and baud rate setting are done with the two address switches (x1 / x10) on the front. Possible settings are addresses 00 to 99 and baud rates 9600 Bd, 19200 Bd, 38400 Bd and 76800 Bd.
Features

• Input 4 digital inputs (contact input) (voltage input)
• BACnet-Standard as per DIN EN 16484
• Cabling RS485 two wire bus with voltage equalizing cable
  
  in bus / line topology
• Transmission rate 9600 to 76800 Bd
  
  (factory setting 9600 Bd)
• Operating voltage range 20 V to 28 V AC/DC (SELV)
• Current consumption 50 mA (AC) / 20 mA (DC)
• Relative duty cycle 100 %
• Operating temperature range -5 °C to +55 °C
• Storage temperature range -20 °C to +70 °C
• Protective circuitry polarity reversal protection of operating voltage
  
  polarity reversal protection of supply and bus
• Operation and bus activity green LED
• Error indications red LED
• Status of the inputs yellow LEDs
• Type of protection as per DIN 40050 housing IP40 / terminal blocks IP20
• Dimensions W x H x D 35 x 70 x 65 mm (1.4 x 2.8 x 2.6 in.)
• Supply and bus pluggable terminal block 1.5 mm²
  
  (terminal block and jumper plug are included
  
  to each packing unit)
• Wire cross section 2.5 mm² (screw type terminal blocks)
• Weight 95 g
• Mounting in series without space The max. number of modules mounted in series is 15,
  
  each group needs an external power supply.