ABB SCYC51213 63911607C Pulse Trigger Board

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)

Specifically, SD Series solutions:

• Use the extensive set of field-proven INFI 90 function code algorithms as previous generation controllers

• Use traditional INFI-Net exception reporting over redundant 100 Mbps Fast-Ethernet (PN800)

• Extend current Composer graphical design engineering tools with device management

capabilities

Further, Symphony Plus Rack and SD Series control networks, INFI-Net and PN800

respectively, can be connected via a self-configuring INFI-Net to Ethernet bridge

(IEB800) module (Figure 08). Use of this bridge makes resident data on either network available

for use in control applications, or for display in the other system.

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