Output Signal; Write Protection - ABB 265GS Operating Instruction

Pressure transmitter
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6.1

Output signal

If the applied pressure is within the values indicated on the name plate, the output current
ranges between 4 und 20 mA.
If the pressure applied falls outside the set range, the output current will be between 3.5 mA and
4 mA if the range is undershot or between 20 mA and 22.5 mA if the range is overshot
(depending on the respective configuration).
Standard setting for normal operation
3.8 mA/20.5 mA
A current that is < 4 mA or > 20 mA may also indicate that the microprocessor has detected an
internal error.
Standard setting for error detection
21 mA
The graphical user interface (DTM) can be used to diagnose the error.
IMPORTANT (NOTE)
A brief interruption in the power supply results in initialization of the electronics (program
restarts).
6.2

Write protection

Write protection prevents the configuration data from being overwritten by unauthorized users. If
write protection is enabled, the "0 %" and "100 %" buttons are disabled.
However, it is still possible to read out the configuration data using the graphical user interface
(DTM) or another, similar communication tool.
The control unit may be leaded if required.
Write protection is activated as follows (also refer to the symbols on the plate):
1. First, use a suitable screwdriver to press the switch down fully.
2. Then turn the switch clockwise by 90°.
IMPORTANT (NOTE)
To deactivate the switch, push it down slightly and then turn counterclockwise by 90°.
IM/265Gx/Ax-EN-07
265Gx, 265Ax
Commissioning
39

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