Parker PAC, Installation Manual, Page: 71 / 197

PACIO-400-00 - Bus Coupler 3A
Although a bus coupler is built in to the PAC, the PACIO Bus Coupler 3A Module serves as a
bus for remote I/O modules. It converts CAT5e (twisted pair cable) to a low-voltage
differential signaling (LVDS) E-Bus and also provides the system power required by the
remote PACIO modules. At the end of the modular device, the connection between the
forward and return lines is automatically closed, retaining EtherCAT protocol through to the
last module.
Each Bus Coupler 3A can provide up to 3 Amps on the E-Bus connector to power up to 20
individual I/O Modules. The PAC Controller also has an internal Bus Coupler and you can
attach approximately 20 modules locally. A Bus Coupler 3A Extender Module is required
when exceeding the 3 Amps and you would like to add additional modules. The figure below
shows how to add the Extender module to the end of the first 20 modules and the Bus
Coupler to the next 20 modules. Only one Extender module is required in the system, but a
Bus Coupler is required for each additional 20 modules (or 3 Amps total E-Bus current).
Technical data PACIO Bus Coupler 3A
Part number PACIO-400-00
Controller ASIC ET1100
Baud Rate 100 Mbit/s
Cable CAT5
Length Of Cable
Maximum 100 meters (or 325 feet) between two bus
couplers
Ports 2x RJ45
Power Supply 24 VDC -20% +25%
Connector Power Plug 2-pole (43-026590-01)
Input Current 50mA and E-Bus power supply
E-Bus Power Supply Maximum 3A (approx. 20 Modules)
E-Bus Load 195 mA