This component is AC500 series EtherCAT Master communication expansion module of ABB AC500 PLC platform, manufactured following IEC industrial standards and ABB global production specifications. It is a plug-in optional accessory mounted on CPU dedicated expansion slot, providing EtherCAT master function for AC500 controller to build high-speed real-time EtherCAT bus network and implement synchronous cyclic data interaction with multiple field-side EtherCAT slave devices such as servo drives and remote distributed IO modules.

3BDH is fixed internal material coding prefix for ABB AC500 series PLC expansion accessory products.000044 is exclusive part serial number of this EtherCAT master module inside ABB internal product catalog.R1 represents the first hardware revised version with optimized internal real-time control circuit compared with original prototype design.

The module draws working power from CPU internal backplane bus without independent external power supply. Its Ethernet interface complies with IEEE802.3 standard with 10/100Mbps auto-adaptive rate and meets international EtherCAT real-time bus specification. Working ambient temperature ranges from -25℃ to +60℃, storage temperature covers -40℃ to +85℃, protection grade is IP20 for cabinet inner installation. The whole module passes IEC61000 EMC anti-interference and industrial anti-vibration certification.

Front panel is equipped with standard RJ45 Ethernet port for connecting industrial network cable, switch and field EtherCAT slave equipment. Rear gold finger plug structure inserts into CPU reserved expansion slot to complete internal high-speed data transmission via CPU built-in bus circuit. The module works as EtherCAT master station, no built-in RS485 or other fieldbus wiring terminals on module housing.

It expands dedicated real-time EtherCAT master communication channel for AC500 main controller. The module periodically issues motion and logic control commands to all connected EtherCAT slave nodes, synchronously collects field feedback data uploaded from slave servo and IO equipment. It takes charge of overall EtherCAT network management including node configuration, cycle synchronization control and network fault diagnosis to realize centralized high-precision motion and process control.

It is widely equipped inside automation control cabinets of high-speed packaging lines, automated assembling equipment, CNC auxiliary control, textile machinery and new energy production equipment, used for constructing EtherCAT real-time bus system and centralized control of various EtherCAT-compliant field slave devices.

Cut off total power supply of matched CPU before installation, insert the module vertically into CPU expansion slot until mechanical locking is fully completed. Connect standard industrial Ethernet cable into RJ45 port and finish EtherCAT network parameter configuration in PLC programming software based on on-site layout requirement. Perform routine maintenance every six months, remove dust on port and module casing with dry soft brush and forbid liquid cleaning solvent. Replace the entire module when persistent network communication failure exists after eliminating external wiring and slave equipment faults, unauthorized disassembly and internal circuit modification are prohibited.