10-4
Instruction and Operation Manual
X-CM-QmBS-eng
Part Number: 541B052AHG
June, 2008
Section 10 I/O Wiring DIN CIO Transmitter
QmBS Sensor / QTA Transmitters
Figure 10-4 HART Multidrop Wiring with SMART FAMILY
™
Transmitters and a Configuration Tool
10.4 Frequency Output Wiring
Frequency output wiring depends on whether you are wiring terminals 23 and 24 (Channel B) or
terminals 31 and 32 (Channel C), and also on whether you have configured the terminals for internal
or external power. The following diagrams are examples of proper wiring for these configurations:
•
Channel B, internal power – Figure 10-5
•
Channel B, external power – Figure 10-6
•
Channel C, internal power – Figure 10-7
•
Channel C, external power – Figure 10-8
Note: If both Channel B and Channel C are configured for frequency output, the Channel C signal is
generated from the Channel B signal, with a user-specified phase shift. The signals are electrically
isolated but not independent. This configuration is used to support dual-pulse and quadrature modes.
See the transmitter configuration manual.
ProLink II v2.x,
HART Communicator, or
AMS software
HART-compatible
transmitters
SMART FAMILY
™
transmitters
Note: For optimum HART communication, make sure
the output loop is single-point-grounded to an
instrument-grade ground.
24 VDC loop power
supply required for
HART 4–20 mA
passive transmitters
QTA DIN CIO
transmitter
600
Ω
maximum resistance
250
Ω
minimum resistance
