Correction Of Zero Shift (Zero Bias / Offset); Configuration Of The Pressure Transmitter Using Lcd Hmi - ABB 266 HART Operating Instruction

266 Models - HART
Important
This configuration procedure only changes the 4 ... 20 mA current signal; it does not affect the physical process pressure (PV value) also shown on the
digital display or user interface. To avoid potential discrepancies, you can use follow the procedure below. After performing a correction, you must
check the device configuration.
Correction of zero shift caused by installation with PV
Zero Bias / Offset
– Raise the dip switch 3 in 1 (up) position
– Press the "Z" button. This sets the output current to 4 mA,
the digital PV value will be set to 0 (zero)
– To reset the PV zero bias setting, press the "S" button.
Important
When the transmitter has been rezeroed following the above
procedure, a zero bias/offset value is applied and stored in the
transmitter memory.
Configuration of the pressure transmitter using the optional integral LCD HMI (menu-controlled)
The integral LCD HMI is connected on the 266 communication board. It can be used to visualize the process measured variables
as well as to configure the display and the transmitter.
In addition, diagnostic information is provided. To access the functionality of the HMI an activation procedure needs to be carried
out. The keypad activation procedure is different between the TTG (Trough The Glass) version and the conventional HMI.
Figure 44: Display keypad
Button (1) functionalities
Exit
Back
Cancel
Next
36 OI/266/HART-EN Rev. D | 2600T Series Pressure transmitters
Meaning
Exit menu
Back one submenu
Exit without saving the selected parameter
value
Select next position for entering numerical
values or letters
Figure 43: Communication board overview
The keys (1), (4), (2) and (3) are available for the menu-con-
trolled configuration.
– The menu/submenu name is displayed above in the LCD
display.
– The number/line of the currently selected menu item is dis-
played in the upper right of the LCD display.
– A scroll bar is located on the right edge of the LCD display
which shows the relative position of the currently selected menu
item within the menu.
– Both of the keys (1) and (4) can have various functions. The
meaning of these buttons is displayed below in the LCD display
above the respective button.
– You can browse through the menu or select a number within
a parameter value using both keys (2) and (3). The button (4)
selects the desired menu item.
Button (4) functionalities
Select
Edit
Ok
Meaning
Select submenu/parameter
Edit parameter
Save selected parameter and display
stored parameter value