Rtd/Ma Inputs/Ma Outputs; Function Blocks; Functionality - ABB RELION REX640 Technical Manual

Section 3
Basic functions
3.15
3.15.1
3.15.2
158
GUID-064DAA79-B069-4CAF-B05C-4ACD3B8974A8 V2 EN
Figure 49: Internal fault signal output IRF

RTD/mA inputs/mA outputs

Function blocks

GUID-6DE23710-21B6-4B8D-98B6-09B1BDEBDEC9 V1 EN
Figure 50: Function block for mA channel
GUID-3F5B483B-0ABC-4EF7-BF37-7E307806106E V1 EN
Figure 51: Function block for RTD channel

Functionality

The Slot#-mA#/RTD# function is an interface function between the relay's mA/RTD
hardware channels. The function is split into separate function blocks for each
hardware channel.
The mA function block works as an interface for the mA current channel. The channel
can be defined either as a measuring input or a controllable output.
The RTD function block works as an interface for the RTD measuring channel that
supports various types of RTD sensors.
1MRS759142 C
REX640
Technical Manual