Checking The Binary Input/Output Circuits; Binary Input Circuits; Checking Optical Connections - Hitachi RER670 Commissioning Manual

1MRK 506 377-UEN Rev. L
4.10

Checking the binary input/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.
4.11

Checking optical connections

Check that the Tx and Rx optical connections are correct.
Railway application RER670
Commissioning manual
Do not insert anything else to the female connector but the corresponding male
connector. Inserting anything else (such as a measurement probe) may damage 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 has an minimum space requirement of
180 mm for plastic fiber cables and 275 mm for glass fiber cables. Check the
allowed minimum bending radius from the optical cable manufacturer.
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Section 4
Starting up
M11722-2 v4
M11722-4 v3
M16022-2 v8
41