ABB 2600T Series Instruction Manual page 65

2 6 0 0 T S E R I E S | P R E S S U R E T R A N S M I T T E R S | O I/ 2 6 6/ F F - E N R E V. E
65
When a pressure px is applied, the transmitter displays the standardized output value x1 in percent. Due to the present application
the value x2 should be displayed. Enter this new value x2 in the line PRTB_PARALLEL_SHIFT_PV, the transmitter calculates the new
zero and the new final value and adopts these new settings in the PRTB_PRIMARY_VALUE_RANGE 0% and PRTB_PRIMARY_VALUE_
RANGE 100%.
Advanced Diagnostic Transducer Block (ADTB)
Overview
The advanced diagnostic transducer block contains some historic/statistical information and all the parameters related with the
PILD algorithm. The goal of this block is to supervise the device and set diagnostic alarms under transducer abnormal condition to
the control system modifying the pressure transducer block primary value status and raising the proper alarm bit in the
ADTB_BLOCK_ERR and RB_MAINTENANCE_ACTIVE.
Description
The Plugged Impulse Line Detection (PILD) is a function aimed at detecting the blockage of the process connections of the
instrument and any type of problem occurring at the internal hydraulic circuit of the sensor. The PILD algorithm is executed in two
distinct phases:
Training Phase:
Selecting ADTB_PILD_COMMAND = TRAIN the training phase get starts analysing and learning the normal condition of the process
dynamics in term of noises of the primary signal detected when the process is working the Training Phase can take long time
depending by the PILD settings of ADTB_PILD_TRAIN_TIME, ADTB_PILD_RETRIES......, then, if the training phase is successfully
completed with good result, ADTB_PILD_TRAINING_OUTPUT = PILD_TRAIN_OK the PILD pass to the second phase of process
consisting in the monitoring of the process dynamics.