Chapter 2. Installation
20
PACSystems RX3i Genius Communications Gateway
GFK-2892F
Grounding
For proper operation, always connect the GCG001 ground terminal (see Figure 9, above) to earth ground. The
panel to which the GCG001 module is mounted, or the RX3i Universal Backplane to which it is mounted, must
have a safety ground connection to protective earth. This ground wire must be at least 1.5 mm
2
(16 AWG).
•
Connect the frame ground connection on the power plug to protective earth.
•
Terminate all ground wires at the same grounding point.
•
Make all ground wires as short as possible.
•
Where the grounding terminal contacts a painted enclosure panel, scrape the paint away down to
clean, bare metal to ensure good contact.
PROFINET Connection
Attach the PROFINET via one or both of the RJ-45 connectors provided (Port 1 & Port 2). Various configurations
are possible. Refer to the manual for the PROFINET controller used in the application (
PACSystems RX3i &
RSTi-EP PROFINET I/O Controller Manual,
GFK-2571 for the RX3i PROFINET Controller Module).
Genius Bus Connection
The GCG module is equipped with one active six-terminal Genius Serial Bus connector.
Two terminals each are provided on a removable terminal block for Serial 1, Serial 2, and Shield connections.
The figure (above left) shows the Genius connection continuing through the connector block (daisy chain).
Whenever the Genius bus is terminated at the GCG001, a bus termination resistor should connect Serial 1 to
Serial 2, with SHLD IN unterminated, (as shown above right). The value of the termination resistor must match
the impedance of the Genius Bus cable.
Note:
Whenever the GCG001 Genius terminal blocks are removed from the faceplate, the
continuity of the Genius Bus is disrupted.
COM
G
EN
IU
S
A
SER 1
SER 2
SHLD
IN
GENIUS
SHLD
OUT
Figure 10: Daisy Chain Genius Bus Wiring
COM
G
EN
IU
S
A
SER 1
SER 2
SHLD
IN
GENIUS
SHLD
OUT
Bus
termination
resistor
Figure 11: Genius Bus Wiring for Bus
Termination
