ABB REC650 Technical Manual page 236

Section 10
Control
230
After the start has been accepted, it is latched in and an internal signal "Started" is set.
It can be interrupted by certain events, like an inhibit signal.
To start auto-reclosing by CB position Open instead of from protection trip signals,
one has to configure the CB Open position signal to inputs CBPOS and START and
set a parameter StartByCBOpen = On and CBAuxContType = NormClosed (normally
closed). One also has to configure and connect signals from manual trip commands to
input INHIBIT.
The logic for switching the auto-recloser On/Off and the starting of the reclosing is
shown in figure 103. The following should be considered:
• Setting Operation can be set to Off, External ctrl or On. External ctrl offers the
possibility of switching by external switches to inputs ON and OFF,
communication commands to the same inputs, and so on.
• SMBRREC is normally started by tripping. It is either a Zone 1 and
Communication aided trip, or a general trip. If the general trip is used the function
must be blocked from all back-up tripping connected to INHIBIT. In both
alternatives the breaker failure function must be connected to inhibit the function.
START makes a first attempt with synchrocheck. TRSOTF starts shots 2-5.
• Circuit breaker checks that the breaker was closed for a certain length of time
before the starting occurred and that the CB has sufficient stored energy to
perform an auto-reclosing sequence and is connected to inputs CBPOS and
CBREADY.
Operation:On
Operation:Off
Operation:External Ctrl
AND
ON
AND
OFF
START
autoInitiate
Additional conditions
TRSOTF
120 ms
CBREADY
t
tCBClosedMin
CBPOS
CB Closed
t
Blocking conditions
Inhibit condistions
count 0
IEC08000017 V1 EN
Figure 103: Auto-reclosing Off/On and start
OR
AND S
OR
R
OR
AND
AND
AND S
R
AND
OR
1MRK 511 287-UEN A
SETON
initiate
start
AND
READY
AND
en08000017.vsd
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