This product is S500 series hot-swappable terminal base for ABB AC500 PLC I/O modules, manufactured according to IEC industrial standards and ABB global production specifications. It is DIN rail installation accessory for fixing compatible S500 I/O modules, centralized field signal wiring and building backplane bus link between I/O modules and PLC main controller.

3BDM is fixed internal part code prefix for ABB S500 terminal base products.000213 is unique catalog number of this hot swap terminal base.R1 stands for first official hardware revised version of this base unit.

Rated applicable field power supply is DC24V. Operating ambient temperature ranges from -25℃ to +60℃, storage temperature ranges from -40℃ to +85℃, protection grade is IP20 for cabinet indoor installation. The base passes IEC61000 EMC anti-interference and industrial vibration certification.

Rear built-in bus connector enables cascade connection with adjacent terminal bases to form complete system backplane bus. Top locking buckle fixes matched I/O module mechanically and electrically, supporting online module replacement under powered status. All field input and output cables connect to base screw terminals, no independent Ethernet or serial port on base body.

It serves as installation carrier for S500 digital and analog I/O modules and concentrates field wiring on base terminals to simplify field wiring and later maintenance. Thanks to hot swap design, corresponding I/O modules can be replaced without cutting off system power and stopping overall PLC operation. It transmits backplane bus data from CPU to mounted I/O modules to realize cyclic data exchange between controller and field devices.

It is widely used together with S500 I/O modules in continuous production line control cabinets, chemical process automation, water treatment system and important industrial equipment requiring non-stop maintenance.

Disconnect DC24V system power during base installation, mount base on standard DIN rail and cascade bases via rear bus terminals, then lock corresponding I/O modules into position. Complete field wiring strictly per terminal definition. Carry out regular maintenance every six months, remove dust on terminals and casing with dry soft brush and ban liquid cleaning solvent. Replace whole base if terminal burnout or bus bad contact appears after checking wiring faults, unauthorized disassembly and structural modification are prohibited.