IM-P343-37 CTLS Issue 4
35
SP400 Electropneumatic Smart Positioner
9.5 SET - setting of valve functions
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Programming notes
Provides access to basic valve set up functions. Press key to scroll round all SET functions.
Functions include:
-
Valve type (2-port or 3-port) (VALVE)
-
Control action (direct or reverse) (CTRLA)
-
Deadband (valve positioning sensitivity) (dBand)
-
Split range (Split range ) (SPLIT RANGE)
Press key to advance to valve type (VALVE). Repeat pressing of key will scroll round all SET functions.
Press key to advance to TUNE in the main menu.
Commissioning notes
Each SET function has a default value as listed in the Installation and Maintenance Instructions. Default
values are based on a 2-port normally closed valve having maximum 95% lift and an input signal span
range 4 - 20 mA.
SET values should be adjusted to suit the valve type (2-port or 3-port) and application. Functions include
the facility to change the control action, limit the full travel of the valve plug (minimum and maximum)
and to split range the input signal.
More detailed information is provided for each SET function.
SET
VALVE
CTRLA
DBAND
SPLIT
RANGE
Fig. 39
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