ABB RELION 620 Series Technical Manual page 818

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Other functions

When the Operation mode is set to "Toggle", the corresponding output toggles between

"True" and "False" for every input pulse received. The state of the output is stored in a

nonvolatile memory and restored if the protection relay is restarted.

When the Operation mode is set to "Pulsed", the corresponding output can be used to

produce the predefined length of pulses. Once activated, the output remains active for the

duration of the set pulse length. When activated, the additional activation command does

not extend the length of pulse. Thus, the pulse needs to be ended before the new activation

The Description setting can be used for storing signal names for each output.

Each control point or LCNTRL can only be accessed through the LHMI control. LCNTRL

follows the local or remote (L/R) state if the Loc Rem restriction setting is "true". If the

Loc Rem restriction setting is "false", local or remote (L/R) state is ignored, that is, all

controls are allowed regardless of the local or remote state.

The BLOCK input can be used for blocking the output functionality. The BLOCK input

operation depends on the Operation mode setting. If the Operation mode setting is set to

"Toggle", the output state cannot be changed when the input BLOCK is TRUE. If the

Operation mode setting is set to "Pulsed", the activation of the BLOCK input resets the

output to the FALSE state.

From the remote communication point of view, SPCGGIO toggled

operation mode is always working as persistent mode. The output O#

follows the value written to the input IN#.

LCNTRL Input signals

LCNTRL Output signals

Table continues on next page

Block signal for activating the blocking mode

Output 1 status

Output 2 status

Output 3 status

Output 4 status

Output 5 status

1MAC504801-IB E

620 series ANSI

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