Instructions

116Hardware

2.2.10 RELBUS-Board

The C-Control PRO AVR32Bit RELBUS-Board (Conrad Order No. 192645) is designed to expand the

functionality of the C-Control PRO AVR32Bit products. The product is configured as open circuit

board. It is equipped with 8 open source switching stages (high-side switch) to switch 8 consumers

with small loads such as relay and intended only for the C-Control PRO UNIT-BUS.

Connection and Commissioning

Make sure that before you connect the modules to your C-Control PRO as AVR32Bit Application-

board or Mainboard, all connections to connected devices are separated and voltage free. On C-Con-

trol PRO systems there is a 6-pin header connector labeled UNIT-BUS. This pin header connector is

suitable for connecting the RELBUS-Boards. At these pins, I2C, UART and +5V are lead through.

The RELBUS-Board has an I2C bus port expander for driving the load (e.g. relay) is responsible.

Through the I2C bus control no additional I/O pins of the UNIT are required.

UNIT-BUS Pin Configuration

The RELBUS-Board is connected via a 6-pin ribbon cable to the pin header connector (UNIT-BUS).

Since the cable length to the UNIT BUS may vary according to the application, we offer these com-

ponents for self-assembly using the following order numbers:

Ribbon cable RM1.27 0.05mm²: Order No. 607237

Pin header connectors 2x3 RM:2.54mm: Order No. 742063

Matching connection cable pre-assembled (length 35cm) Order No. 198876

Tip: The pin header connectors can be easily pressed together with a small vise. Cut the cable

to proper length and straight it in the plug (guide grooves in the plug), and then clamp between the

two vise jaws, and turn it carefully until the connector clicks into place.