ABB RER620, Technical Manual

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1MAC309294-MB F
Section 5
Control functions
RER620 285
Technical Manual
5.2.3.2 Protection signal definition
The Control line setting defines which of the initiation signals are protection pickup and
trip signals and which are not. With this setting, the user can distinguish the blocking
signals from the protection signals. The
Control line setting is a bit mask, that is, the lowest
bit controls the
INIT_1
line and the highest bit the
INIT_6
line. Some example
combinations of the Control line setting are as follows:
Table 293: Control line setting definition
prot = protection signal
other = non-protection signal
When the corresponding bit or bits in both the Control line setting and the
INIT_X
line
are TRUE:
• The
CLOSE_CB
output is blocked until the protection is reset
• If the
INIT_X
line defined as the protection signal is activated during the
discrimination time, the AR function goes to lockout
• If the
INIT_X
line defined as the protection signal stays active longer than the time
set by the Max trip time setting, the AR function goes to lockout (long trip)
• The
UNSUC_RECL
output is activated after a pre-defined two minutes (alarming
ground-fault).
It is emphasized that the three phases of the same protection function should be fed to the
same INIT input to the autorecloser.
5.2.4 Operation principle
The function can be enabled and disabled with the Operation setting. The corresponding
parameter values are “On” and “Off”.
The reclosing operation can be enabled and disabled with the Reclosing operation setting.
This setting does not disable the function, only the reclosing functionality. The setting has
three parameter values: “On”, “External Ctl” and “Off”. The setting value “On” enables
the reclosing operation and “Off” disables it. When the setting value “External Ctl” is
selected, the reclosing operation is controlled with the
RECL_ON
input.
Control line
setting
INIT_1 INIT_2 INIT_3 INIT_4 INIT_5 INIT_6
0 other other other other other other
1 prot other other other other other
2 other prot other other other other
3 prot prot other other other other
4 other other prot other other other
5 prot other prot other other other
...63 prot prot prot prot prot prot
Setting the Operation setting to “Off” will prevent tripping by any
protection function!