Transmitter Configuration - ABB 2600T Serie Bedienungsanleitung

4 Transmitter configuration

4.1 Output 4...20 mA/HART communication
Use power supply units or batteries which ensure a permanent
operating voltage of DC 10.5 V ...42 V for the transmitter. Consider
the resistance of the signal receiver (e.g. display) is looped into the
signal circuit and the max. current of 20 ... 22mA, caused by over
modulating.
We recommend using screened, pair wise twisted signal cables. Do
not place these cables close to other cables (with inductive load) or
close to other electrical devices.
4.2 Minimum configuration hints for PROFIBUS PA
transmitters
The minimum configuration for having AI working needs at least the
following settings:
Pressure Transducer Block:
− SCALE_IN: Calibration range (Eng. Units for pressure only)
− LIN_TYPE: Linear, Square Root, Cylindrical Lying Container,
Spherical Container, Square Root 3° pow, Square Root 5° pow,
Bidirectional Flow and 22 points table.
Analog Input Block:
− OUT_SCALE: Output range (all allowed Eng. Units)
− PV_SCALE = OUT_SCALE
4.3 Minimum configuration hints for FOUNDATION
Fieldbus transmitters
The minimum configuration for having AI working and/or
moving out from the Out Of Service (OOS) mode needs at least
the following settings:
− CHANNEL: 1=pressure; 2=sensor temperature; 3=static pressure
− XD_SCALE: Calibration range (Units for pressure only)
− OUT_SCALE: Output range (all allowed Eng. Units)
− L_TYPE: Direct, Indirect or Square Root
Important. For more detailed information about configuration and
troubleshooting of FOUNDATION Fieldbus devices, please refer to the
complete "Operating Instruction" available online at www.abb.com.
If the AI Block cannot be removed from OOS mode, please refere to
the below table:
Possible causes Solution
The target mode is set to Set the target mode to something different by
OOS OOS
CHANNEL different by 0
The Configuration Error
Set L_Type correctly
bit is set in the
Set XD_SCALE unit = TPB Primary Value Range
BLOCK_ERR
Unit
The RESOURCE BLOCK Set the Target Mode of the RESOURCE
is not in AUTO mode BLOCK to AUTO mode
The Block is not Design the FB Application correctly and
scheduled download it to the devices
4.4 Set the PV to Zero
(for Profibus and FOUNDATION Fieldbus)
After configuring the transmitters according to the communication
protocol, it is necessary to set the PV value to zero.
This operation is tipically used for correction of the mounting position
and other influences (line pressure effects).
To carry out this correction the transmitter should be pressure-free,
(the connections should be pressure-free or short-circuited).
The PV value can be zeroed by using "set PV to Zero" inside DTM or
EDD parametrization menus.
4.5 How to set the zero
The following procedures do not affect the physical pressure shown
(PV VALUE); they only correct the analog output signal. For this
reason, the analog output signal may differ from the physical pressure
value (PV) shown on the digital display or the communication tool. In
case the plant procedure requires to correct this, set the
communication board dip switch nr. 3 in 1 (up) position before
performing the below procedures.
4.5.1 Zero based calibrated devices
(eg. 4 .. 20 mA = 0 .. 250 mbar)
The below procedure has not to be followed when dealing with
absolute pressure transmitters (266Axx/VxH/NxH/RxT):
1. Insulate the transmitter from the process and vent the transmitter
measuring chamber/s to atmosphere.
2. Check the output signal of the transmitter, if it is at 4 mA (or
PV= 0) you do not need to re-zero the transmitter; if the output is
not at zero follow the below procedure:
Unscrew the data plate fixing screw on the top of the
transmitter housing.
Rotate the data plate to get access to the push buttons.
Be sure that the write protection rotating switch is set to
write enable.
Push the zero (Z) button on top of the transmitter for at least
3 seconds.
The output will go to 4 mA, and if the Integral Display is
present, the message "OPER DONE" will appear. If nothing
happens check the write protection rotating switch, it is
probably set to write disable. In case of other diagnostic
messages, refer to the instruction.
3. Once the "Zero" operation has been accomplished the
transmitter needs to be reconnected to the process.
4. Close the vent / drain valves that may have been opened.
5. Open the insulation valve/s (in case of differential pressure
transmitters please follow the following sequence:
open high pressure side insulation valve,
open low pressure side insulation valve,
close equalizing valve.
2600T Series Pressure transmitters | SOI/266-XC Rev. J 9
4 Transmitter configuration