This unit is AC500 series PROFIBUS-DP slave communication expansion module of ABB AC500 PLC platform, manufactured conforming to IEC industrial standards and ABB global manufacturing specifications. It is an insert-type optional accessory mounted on CPU dedicated expansion slot, designed to expand PROFIBUS-DP bus interface for AC500 controller and enable data exchange with PROFIBUS-DP master station and distributed field peripheral devices.

3BDH is fixed internal coding prefix for ABB AC500 series PLC expansion accessory products.000013 is unique part serial number of this PROFIBUS communication module inside ABB internal product catalog.R1 stands for the first hardware revised version with optimized internal circuit layout compared with original prototype.

The module obtains operating power via CPU internal backplane bus without independent external power supply. PROFIBUS-DP interface follows international PROFIBUS standard, supporting communication baud rate from 9.6kbps up to 12Mbps and maximum bus length matching corresponding standard specification. Working ambient temperature ranges from -25℃ to +60℃, storage temperature covers -40℃ to +85℃, protection grade is IP20 for cabinet inner installation. The complete module passes IEC61000 EMC anti-interference and anti-vibration industrial certification.

Front panel is fitted with standard PROFIBUS screw terminal for A line, B line and shielding ground wiring to connect PROFIBUS bus cable. Rear gold finger plug structure is inserted into CPU reserved option slot to achieve internal data interaction through CPU onboard bus. The module operates as PROFIBUS-DP slave device, no integrated Ethernet or RS485 independent communication port on module housing.

It expands dedicated PROFIBUS-DP slave bus channel for AC500 CPU, realizing cyclic real-time data interaction between local PLC system and upper PROFIBUS master controller or remote distributed I/O stations. It transmits field collected digital and analog data from local I/O modules to master station and receives downlink control commands from master station to execute field output actions, helping PLC access standard PROFIBUS industrial bus network.

It is commonly configured inside automation cabinets of machinery production lines, metallurgy auxiliary control, cement auxiliary equipment, water treatment centralized control and large packaging automation projects, applied for networking with PROFIBUS-based inverters, remote I/O modules and main control PLC.

Cut off total power of matched CPU before installation, insert the module vertically into CPU expansion slot until mechanical locking completes. Arrange PROFIBUS bus wiring strictly following A/B polarity definition and install terminal matching resistor at two bus endpoints as required. Perform routine maintenance every six months, clear dust on terminals and module surface with dry soft brush and never use liquid cleaning agents. Replace the whole module when continuous bus communication failure remains after excluding cable and master station faults, unauthorized disassembly and internal circuit modification are prohibited.