Checking Binary Output Circuits; Checking Optical Connections; Authorizations; User Authorization - ABB RELION 620 Series Operation Manual

Section 8
Commissioning
8.2.4.2
8.2.5
8.3
8.3.1
114
Do not use AC voltage. Binary inputs are rated for DC voltage only.

Checking binary output circuits

• Preferably, disconnect the binary output connector from the binary output cards.
• Check all connected signals so that both load and voltage are in accordance with the
protection relay specifications.

Checking optical connections

Check that the Tx and Rx optical connections are correct.
A relay 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.

Authorizations

User authorization

The user categories have been predefined for the LHMI and WHMI, each with different
rights and default passwords.
Passwords are settable for all predefined user categories. The LHMI password must be at
least four and WHMI password at least nine characters. The maximum number of
characters is 8 for the LHMI password and 20 for the WHMI password. Only the
following characters are accepted.
• Numbers 0-9
• Letters a-z, A-Z
• Space
• Special characters !"#%&'()*+´-./:;<=>?@[\]^_`{|}~
User authorization is disabled by default and can be enabled via the LHMI
or WHMI path Main Menu/Configuration/Authorization.
1MAC456939-IB D
620 series ANSI
Operation Manual