Intelligent HART I/O

HART field devices are seamlessly integrated through a variety of HART analog input and

output modules. This provides access to a wide range of intelligent field devices including

transmitters and actuators from ABB and other vendors. Besides the 4-20 mA primary variable,

all secondary, tertiary and quaternary variables in a HART device can be accessed by Function Code

control applications in the SD Series controller.

Data can be calculated, used as part of a control strategy, or for display and alarm purposes at

the S+ Operations console.

The SD Series` HART capabilities allow users to take full advantage of their HART instrumentation

investments. Too often smart devices are under utilized because of the limitations of the I/O

system to accept the device’s information. 

With SD Series HART modules, incorporation of the secondary variables in control strategies can

reduce the overall number of field devices and I/O channels required. Visibility of HART diagnostic

data at the system level reduces maintenance costs through the proactive response to

degrading performance of field devices before a failure occurs.

SD Series HART I/O features include:

• Each channel’s secondary/tertiary/quaternary variables are available for use in control applications

• Update rate of secondary/tertiary/quaternary variables is less than one second (AI05 and AO05)