Checking Binary Input And Output Circuits; Binary Input Circuits; Binary Output Circuits; Checking Optical Connections - ABB RET650 Series Commissioning Manual

1MRK 504 136-UUS B
4.10

Checking binary input and output circuits

4.10.1

Binary input circuits

Preferably, disconnect the binary input connector from the binary input cards. Check all connected
signals so that both input level and polarity are in accordance with the IED specifications.
4.10.2

Binary output circuits

Preferably, disconnect the binary output connector from the binary output cards. Check all
connected signals so that both load and polarity are in accordance with IED specifications.
4.11

Checking optical connections

Check that the Tx and Rx optical connections are correct.
Transformer protection RET650
Commissioning manual
Insert only the corresponding male connector to the female connector. Inserting
anything else (such as a measurement probe) may violate the female connector
and prevent a proper electrical contact between the printed circuit board and the
external wiring connected to the screw terminal block.
An IED equipped with optical connections requires a minimum depth of 180 mm
(7.2 inches) for plastic fiber cables and 275 mm (10.9 inches) for glass fiber cables.
Check the allowed minimum bending radius from the optical cable manufacturer.
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Section 4
Starting up
GUID-231F80F2-B09C-47B0-BB25-7DF412B7A2E5 v1
M11722-4 v3
M11722-8 v3
M16022-2 v6
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