IM-P343-35 CTLS Issue 5
45
SP500 Electropneumatic Smart Positioner
9.5 SET - setting of valve functions
Fig. 62
•
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)
-
Actuator type (on/off) (ACT)
-
Control action (direct or reverse) (CTRLA)
-
Minimum travel setting (0 to 66.66%) (MIN-T)
-
Maximum travel setting (33.3 to 100%) (MAX–T)
-
Displayed % travel (on/off) (DTRVL)
-
Minimum span range (input mA signal) (MIN-R)
-
Maximum span range (input mA signal) (MAX-R)
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.
Valve type
(VALVE 2-PORT /
VALVE 3-PORT)
Control action
(CTRLA)
Minimum range
(MIN-R)
Maximum range
(MAX-R)
SET
Displayed %
travel
(DTRVL)†
† Only if MIN-T/MAX-T not 0/100%
Maximum travel
(MAX-T)
Minimum travel
(MIN-T)
Actuator type
(ACT)
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