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
10-2
Figure 10-1 Configuration of Configurable I/O Terminals
10.3 mA Output Wiring
The wiring diagrams in this section are examples of proper wiring for the QTA DIN CIO transmitter’s
primary and secondary mA outputs. The following options are shown:
•
Basic mA output wiring – Figure 10-2
•
HART/analog single-loop wiring – Figure 10-3
•
HART multidrop wiring – Figure 10-4
Terminals 21 & 22 (Channel A)
mA1 output
Internal power only
HART (Bell 202) communications
Terminals 23 & 24 (Channel B)
mA2 output
OR
FO
OR
DO1
Power:
• mA – internal only
• FO or DO1 – internal or external
No communications
Terminals 31 & 32 (Channel C)
FO
OR
DO2
OR
DI
Power: internal or external
No communications
mA = milliamp
FO = frequency output
DO = discrete output
DI = discrete input
Terminals 33 & 34
Service port
OR
Modbus RS-485
(Modbus RTU or Modbus ASCII)