U4.PZ_FR - Error response on undershoot of the supply pressure
Possible settings: cont / HOLd
Purpose: Defines the behavior of the device when the limit value of the supply
pressure (U2.PZLIM) is undershot.
Cont = Chamber pressure is controlled via supply pressure PZ.
HOLd = Chamber pressure is maintained, corresponds to the re‐
sponse for Fail in Place.
Factory setting: cont
8.5 Overview of the assignment of the HART variables
Dynamic variables for device revision 6, as of firmware 5.01.xx HART 7
For positioners with HART communication, the variables PV, SV, TV and QV are assigned as
follows:
Variable Meaning Physical variable
HART Primary Variable (PV) Primary variable W (setpoint) in %
HART Secondary Variable (SV) 1st secondary variable X (actual value) in %
HART Tertiary Variable (TV) 2nd secondary variable Xd (control deviation) in %
HART Quaternary Variable (QV) 3rd secondary variable t (temperature) in °C
Parameter assignment
8.5 Overview of the assignment of the HART variables
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE 189
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