8-2
Instruction and Operation Manual
X-CM-QmBS-eng
Part Number: 541B052AHG
June, 2008
Section 8 I/O Wiring FM, FB and PA Transmitter
QmBS Sensor / QTA Transmitters
Figure 8-1 Connecting the Fieldbus Communication Wires
8.3 Profibus-PA Wiring
Wire the transmitter to the Profibus-PA segment according to the diagram in Figure 8-2. Follow all
local safety regulations.
A transmitter that has been improperly wired or
installed in a hazardous area could cause an
explosion.
• Make sure the transmitter is wired to meet or exceed
local code requirements.
• Install the transmitter in an environment that complies
with the hazardous area approval tag on the transmitter.
See Appendix A.
Fieldbus
power
supply
F<Small Caps>oundation fieldbus per
F<Small Caps>oundation fieldbus
Spur to fieldbus per
F<Small
Caps>oundation
fieldbus wiring
Terminals 3–6
Terminals 1–2
{
Note: Terminals 3 through 6 are not used.
Note: The fieldbus communication terminals (1 and 2) are polarity-insensitive.
WARNING