Testing Binary Outputs - ABB Relion REX640 User Manual

2NGA000105 B
4.5.5
BIO-Tester Relion® REX640
User Manual
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Figure 15: View I/O page

Testing binary outputs

BIO-Tester provides LED indication next to each binary output. When a binary output
is activated from the LHMI, its LED lights up. This way, the status of activated binary
outputs can be monitored on BIO-Tester.
If the contact type of the binary output is "Normally Open / Normally Close" (NO/
NC), its LED is yellow to indicate "Normal" mode and green when they are activated.
If the binary output type is "Normally Open" (NO), activation of such a contact is
indicated by a green LED.
Table 7: LED status of outputs
LED
Internal fault signal output (change-over/form C) IRF is a single contact included in
the power supply module of the protection relay. This IRF NO / NC type contact is
shown green when it is in "Normal" mode and when it is activated, the LED is shown
as red.
BIO-Tester Relion® REX640
Color
Off
Yellow
Green
Section 4
Decsription
-
Normal mode (NO/NC)
Activated (NO)
Activated (NO/NC)
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