B3.Fact1 - Factor 1 - Siemens SIPART PS2 Operating Instructions Manual

Parameter assignment
9.4 Description of parameters
b1.TIM - Time constant of low-pass filter
Possible settings:
Purpose:
Factory setting:
b2.LIMIT - Limit for dynamic control valve behavior
Adjustment range:
Purpose:
Factory setting:

b3.FACT1 - Factor 1

Adjustment range:
Purpose:
Factory setting:
182
• Auto
• 1 ... 400
Use this sub-parameter to define the attenuation effect of the low-
pass filter. The unit is seconds. The time constant 'b1.TIM' is cal-
culated from the travel times 'uP' and 'doWn' determined during
the initialization. This time constant becomes effective when the
'b1.TIM' parameter is set to 'Auto'.
If the time constant is inadequate, the setting of 'b1.TIM' can be
changed manually. Set the time constant in a range from '1' to
'400'. In this case:
• Setting '1' indicates a very weak attenuation.
• Setting '400' indicates a strong attenuation.
The currently determined deviation is displayed in Diagnostic value
'15.DEVI - General control valve fault' (Page 215). The positioner
triggers a message if the current value exceeds one of the three
parameterizable thresholds.
Auto
0.1 ... 100.0
Use this sub-parameter to set a base limit in percent. The base
limit defines the magnitude of the permissible deviation from the
expected position course. The limit serves as a reference variable
for the fault message factors.
Set the base limit in a range from '0.1' to '100.0'.
1.0
0.1 ... 100.0
Use this sub-parameter to set the factor for formation of threshold
1. Set the factor in a range from '0.1' to '100.0'. The threshold is
the product of 'b2.LIMIT' and 'b3.FACT1'.
The threshold 1 message is displayed when threshold 1 is ex-
ceeded. This message is only output if threshold 2 or 3 is not ex-
ceeded at the same time. The process to activate and display this
message is described in the 'XDIAG' parameter.
5.0
SIPART PS2 with and without HART
Operating Instructions, 02/2016, A5E00074631-AB