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Parameterizing/addressing
9.4 Description of parameters
Factory setting:
C2.FACT1 - Factor 1
Adjustment range:
Purpose:
Factory setting:
C3.FACT2 - Factor 2
Adjustment range:
Purpose:
Factory setting:
184
To optimize the sensitivity of the monitoring of the pneumatic leak-
age to your specific application, follow these steps:
1. After initializing the positioner automatically, use a calibration
device to initiate a ramp movement.
2. Conditions for the ramp movement:
– The ramp covers the normal operating range of the valve.
– The steepness of the ramp matches the dynamic
requirements of the corresponding application.
– The characteristic of the ramp corresponds to the
characteristic of the setpoint that actually occurs.
3. During the ramp movement, the "Diagnostics parameter
'16.ONLK' Pneumatic leakage (Page 213)" provides information
about the actual values. Define the limit of the leakage indicator
accordingly.
The positioner triggers an error message if the current value ex-
ceeds one of the three configurable limit thresholds. How to set the
three limit thresholds is described below.
30.0
0.1 ... 100.0
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 error message is displayed when the limit thresh-
old 1 is exceeded. The process to activate and display this error
message is described in the "XDIAG" parameter.
1.0
0.1 ... 100.0
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 error message is displayed when the limit thresh-
old 2 is exceeded. The process to activate and display this error
message is described in the "XDIAG" parameter.
1.5
SIPART PS2 with and without HART
Operating Instructions, 09/2014, A5E00074631-12
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