Page 1/4 Data sheet Part number MR-DO4 1108361321 Modbus module with digital outputs 2016-07-18 Illustrations Principle diagram Wiring 42 41 44 32 31 34 12 N.C. A1/ +24V 14 N.O. 24 V 11 C 24 V AC/DC A1 A1 A2/ GND 22 N.C. BUS B+ A2 GND A2 24 N.O. 21 C BUS A- BUS B+ B+ B+ 32 N.C. A- BUS A- A- 34 N.O. 31 C 42 N.C. 44 N.O. 41 C 11 14 12 21 24 22 Open Energy Management Equipment 34TZ Use copper conductors only Product description The Modbus module with 4 digital outputs was developed The outputs can be switched by means of standard registers for decentralized switching tasks. It is suitable for switching via a Modbus master. Module address, bit rate and parity electrical components, such as motors, contactors, lamps, are set by means of two address switches on the front or by louvers, etc. software. With strong inductive loads, we recommend protecting the Suitable for decentralized mounting on DIN TH35 rail relay contacts additionally with an RC element. The module according to IEC 60715 in electrical distribution cabinets. is provided with a manual control for manually switching the relays. METZ CONNECT GmbH Im Tal 2 78176 Blumberg Germany Ph. +49 7702 533-0 Fax +49 7702 533-433 Additional documentation see www.metz-connect.com Modbus RTU on RS-485 RISC - CPU 2016 METZ CONNECT - Subject to modifications Page 2/4 Data sheet Part number MR-DO4 1108361321 Modbus module with digital outputs 2016-07-18 Technical data Approvals C-UL Certification Open Energy Management Equipment 34TZ Modbus interface Protocol Modbus RTU Address range 00 to 99 Transmission rate 1200 to 115200 bit/s, factory setting 19200 bit/s Even Bus interface RS485 two wire bus with potential equalization in bus or line topology terminate with 120 Ohm Supply Operating voltage 24 V AC/DC 10 % (SELV) Current consumption 200 mA (AC) / 70 mA (DC) Relative duty cycle 100 % Outputs Digital outputs 4x changeover contacts (4 DPST) Switching voltage max. 250 V AC Continuous current max. 5 A per relay Total current for all contacts 12 A Switching frequency 360 switching cycles per hour General informations Rated insulation voltage 230/400 V AC Overvoltage category III II Pollution degree 2 2 Rated surge voltage 4 kV 2.5 kV Type of insulation basic insulation reinforced insulation METZ CONNECT GmbH Im Tal 2 78176 Blumberg Germany Ph. +49 7702 533-0 Fax +49 7702 533-433 Additional documentation see www.metz-connect.com 2016 METZ CONNECT - Subject to modifications