This module is AC500 series CANopen slave communication expansion module under ABB AC500 PLC product platform, manufactured in compliance with IEC industrial standards and ABB unified production specifications. It is a pluggable optional accessory which can be installed into the dedicated expansion slot of AC500 CPU, used to expand independent CANopen bus interface for the controller to realize data interaction with CANopen-based field drives, remote I/O and intelligent field devices.

3BDH is fixed internal material coding prefix for ABB AC500 PLC series expansion accessories.000014 is exclusive part serial number of this CANopen communication module inside ABB internal product catalog.R1 represents the first revised hardware version with optimized internal circuit layout compared with original prototype design.

The module gets operating power supply from CPU internal backplane bus without extra external power input. CANopen interface complies with international CAN bus standard, supports variable communication baud rate from 5kbps up to 1Mbps with corresponding effective transmission distance. Working ambient temperature ranges from -25℃ to +60℃, storage temperature ranges from -40℃ to +85℃, protection grade is IP20 for inner cabinet installation. The whole product passes IEC61000 EMC anti-interference and industrial anti-vibration certification.

Front panel is equipped with three-pin screw terminal for CAN-H, CAN-L and shield ground connection to access CANopen bus cable. Rear gold finger plug structure inserts into CPU reserved option slot and completes internal data transmission via CPU built-in bus circuit. The module works as CANopen slave station, no built-in independent Ethernet or RS485 communication port on module housing.

It expands dedicated CANopen bus channel for AC500 main controller, achieving cyclic real-time data exchange between local PLC system and peripheral CANopen compliant servo drives, frequency converters and distributed I/O units. It uploads field collection signals from local I/O modules to upper master equipment and receives downlink control instructions to drive on-site executing components, enabling the PLC to join standard CANopen industrial bus network.

It is widely matched with AC500 PLC in automation control cabinets of packaging machinery, automated assembly lines, textile equipment, small hydraulic control systems and new energy auxiliary control projects, mainly used for bus connection with CANopen type servo and drive products.

Cut off total power supply of the matched CPU before installation, insert the module vertically into CPU expansion slot until mechanical locking is fully finished. Complete CAN bus wiring strictly according to CAN-H and CAN-L polarity definition and configure terminal matching resistor at bus endpoints as specification requires. Conduct regular maintenance every six months, remove dust on terminals and module shell with dry soft brush and prohibit liquid cleaning solvent. Replace the entire module when persistent bus communication fault exists after eliminating external wiring and peripheral device faults, unauthorized disassembly and internal circuit modification are forbidden.