Operating instructions

Parameterizing/addressing
10.4 Description of parameters
SIPART PS2 with and without HART communications
Operating Instructions, 09/2008, A5E00074631-08
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1. After initializing the positioner automatically, use a calibration device to initiate a ramp
movement.
2. Conditions for the ramp movement:
– The ramp must cover the normal operating range of the valve.
– The steepness of the ramp must match the dynamic requirements of the
corresponding application.
3. During the ramp movement, the "15 ONLK" diagnostics parameter provides information
about the actual values. Define the limit of the leakage indicator accordingly.
The positioner triggers a fault message if the current value exceeds one of the three
configurable limit thresholds. How to set the three limit thresholds is described below.
The factory setting is "30.0".
C2.FACT1 - factor 1
Use this sub-parameter to set the factor for the formation of limit threshold 1. Set the factor in
a range from "0.1" to "100.0". The limit threshold is the product of "C1.LIMIT" and
"C2.FACT1".
The threshold 1 fault message is displayed when the limit threshold 1 exceeds. The process
to activate and display this fault message is described in the "XDIAG" parameter.
The factory setting is "1.0".
C3.FACT2 - factor 2
Use this sub-parameter to set the factor for the formation of limit threshold 2. Set the factor in
a range from "0.1" to "100.0". The limit threshold is the product of "C1.LIMIT" and
"C3.FACT2".
The threshold 2 fault message is displayed when the limit threshold 2 exceeds. The process
to activate and display this fault message is described in the "XDIAG" parameter.
The factory setting is "1.5".
C4.FACT3 - factor 3
Use this sub-parameter to set the factor for the formation of limit threshold 3. Set the factor in
a range from "0.1" to "100.0". The limit threshold is the product of "C1.LIMIT" and
"C4.FACT3".
The threshold 3 fault message is displayed when the limit threshold 3 is exceeded. The
process to activate and display this fault message is described in the "XDIAG" parameter.
The factory setting is "2.0".
10.4.3.4 Description of parameter d
d.
STIC - static friction/slipstick effect
Use this parameter to continuously monitor the current static friction of the final controlling
element (slipstick). If the parameter is activated, the positioner detects the slipstick effects