ABB 266 Operating Instruction page 35

Equations
The Analog Input receive in input the Transduce Block variable Value selected with the CHANNEL. The Input Value is
represented as CHANNEL Value in the following formula.
FIELD_VAL = 100 * CHANNEL_VALUE – XD_SCALE_0%
XD_SCALE_100% – XD_SCALE_0%
Depending by the L_TYPE selection the following signal conversions are applied:
L_TYPE Formula
Direct PV = CHANNEL_VALUE
This conversion is applied when the XD_SCALE values are different from the OUT_SCALE values
Indirect
PV = FIELD_VAL% * (OUT_SCALE_100% - OUT_SCALE_0%) + OUT_SCALE_0%
IF FIELD_VAL < 0.0
PV = OUT_SCALE 0%
ELSE IF FIELD_VAL < LOW_CUT
Indirect Square Root
PV = OUT_SCALE 0%
ELSE
PV =
Configuration hints
The minimum configuration for having the AI working and/or moving out from the OOS needs at least the following settings:
– CHANNEL different by 0 (uninitialized)
– XD_SCALE = OUT_SCALE
– L_TYPE = Direct
** The minimum configuration can be set also via the RB_SPECIAL_RESTART
√
Field_Val% * (OUT_SCALE_100% - OUT_SCALE_0%) + OUT_SCALE_0%
2600T Series Pressure transmitters | OI/266/FF/ADD-EN Rev. B 35