Analogue Input Blocks - rotork Mk3 Technical Manual

Foundation Fieldbus CP Option Card Technical Manual
6.3

Analogue Input blocks

The FF CP card includes two Analogue Input (AI) blocks.

AI 1 Valve Current Position Output (analogue % value)
The % 'Open' value (position) of the valve. The range is 0.0-100.0% and the end
values relate to the close (0%) and open (100%) position limit switches. Actual
resolution is 0.1%.

AI 2 Valve Current Torque / Pressure Output (analogue % value)
IQ3 / IQT3 / SI
The instantaneous % torque value throughout the valve stroke. The range is 0-
120%, with a resolution of 1%.
Transducer
Fig 6.5: Analogue Input Function Block
On installing the card, the following settings will apply:

The connections to the Transducer block are fixed and in place.

The Mode control is standard (Auto, Man, OOS).

The Alarms are disabled.

AI 1 is channel number 1 (this must not be changed).

AI 2 is channel number 2 (this must not be changed).
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and CVA only
3
SIMULATE XD_SCALE
Publication PUB089-005-00_0618
AI
LOW_CUT PF_TIME
Out
OUTPUT