The BACnet BMT-Multi I/0 module is a compact and quick-to-install solution for connecting digital and analog signals from the actuator and sensor level directly to a control unit in building automation via the BACnet MS/TP protocol. 29 I/Os, some of which are configurable, are available for various tasks. Inputs and outputs can be controlled and scanned by standard objects via a BACnet client. The module address and baud rate are set with two rotary switches on the front or via software. Relays K1 to K4 are equipped with manual control and allow manual intervention. In this case, the relay contacts must be protected with appropriate measures depending on the load. Suitable for decentralized mounting on DIN rail TH35 according to IEC 60715 in electrical distribution cabinets.

Technical Specifications

• Protocol                              BACnet MS/TP
• Address range                  From 00 to F9 hex
• Bus interface                       RS485 (two-wire bus)
• Baud rate                            From 9600 to 115200 bit/s
• Operating voltage            24 V AC/DC / +/- 10% (SELV)
• Current consumption        220 mA (AC) / 110 mA (DC)
• Relative duty cycle            100 %
• Inputs / digital                     11 x optocoupler, galvanically isolated
• Input / S0                           1 x per DIN EN 62053-31, Class A
• Analog inputs                     configurable
• for resistance or                   6 x 40 Ohm to 4 MOhm
• for voltage                           6 x 0 to 10 V DC
• Input / current                     1 x analog 0 to 20 mA DC
• Outputs / Relay                   4 x switching (4PDT) / 250 V AC / 6 A
• Manual control                  push buttons, switch from automatic to manual operation by pressing > 1 s
• Outputs / PhotoMOS          4 x 24 V DC / 100 mA galvanically isolated
• Outputs / voltage               2 x analog 0 to 10 V DC / 5 mA, galvanically isolated