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MR-SM3 Modbus RTU

The module MR-SM3 is a smart meter component for building automation. Current, voltage, power and many other values can be captured by three 230 Volt current circuits. In addition, the device provides monitoring functions of for example asymmetry, phase failure, phase sequence, overvoltage and undervoltage. These values can be queried via a Modbus-Master. Module address, bit rate and parity are set with two rotary switches on the front or by software. Suitable for decentralized mounting on DIN TH35 rail according to IEC 60715 in electrical distribution cabinets.

Protocol Modbus RTU
Address range 00 to 99
Bus interface RS485 (two-wire bus)
Transmission rate 1200 to 115200 Bit/s
Operating voltage range 20 V to 28 V AC/DC (SELV)
Current consumption 108 mA (AC) / 50 mA (DC)
Relative duty cycle 100 %
Inputs 3 x analog
Input / voltage 230 V AC -20 to +15 %
Input / voltage range 184 to 265 V AC
Input / current 0 to 16 A AC
Display LED green, red
Dimensions W x H x D 50 x 70 x 74 mm
Weight 110 g
Operating temperature range -5 °C to +55 °C
Storage temperature range -20 °C to +70 °C
Ingress protection for housing / terminal blocks IP40 / IP20

Technical Data 

  • P/N11084113
    Feature 1
    Feature 2


pdf Data sheet 11084113 247.03 KB
pdf Instruction 11084113 2.69 MB
pdf Modbus software manual 698.96 KB
zip Modbus Configuration Tool V1.20 746.87 KB
last update on Saturday, 2. July 2016 - 2:54