INTELLIBUS
Number : NR 1157
Revision : B
Page 19/19
Instructions for start-up
61 Close tight torque
setting
40 to 100% 1
read / write
62 Opening torque setting 40 to 100% 1
read / write
63 Closing torque setting 40 to 100% 1
read / write
64 partial stroke% 1 to 100% 1
read / write
65
Partial stroke start position
0=close, 1=open 1
read / write
7 FUNCTION BLOCK PID
The Function Block PID is used to achieve a Proportional/Integral/Derivative control
loop.
Function Blocks can be built into fieldbus devices as needed to achieve the desired
device functionality. For example, a simple temperature transmitter may contain an
AI function block. The control valve actuator might contain a PID function block as
well as the expected AO block. Thus a complete control loop can be built using only
a simple transmitter and a control valve actuator. This function block PID is located in
the actuator but is operational only if the links with others function blocks (inside or
outside the actuator) have been achieved with a Foundation Fieldbus configurator.
The PID located inside the actuator is not obliged to drive it. It could be used to drive
another device.
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