ABB REL650 Applications Manual page 340

Section 11
Control
334
StartByCBOpen
The normal setting is Disabled. It is used when the function is started by protection trip
signals Follow CB = Disabled. Follow CB = Enabled.
Follow CB
The usual setting is Follow CB = Disabled. The setting Enabled can be used for delayed
reclosing with long delay, to cover the case when a CB is being manually closed during
the "auto-reclosing open time" before the auto-reclosing function has issued its CB
closing command.
tCBClosedMin
A typical setting is 5.0 s. If the CB has not been closed for at least this minimum time, a
reclosing start will not be accepted.
CBAuxContType , CB auxiliary contact type
It shall be set to correspond to the CB auxiliary contact used. A NormOpen contact is
recommended in order to generate a positive signal when the CB is in the closed position.
CBReadyType , Type of CB ready signal connected
The selection depends on the type of performance available from the CB operating gear.
At setting OCO (CB ready for an Open – Close – Open cycle), the condition is checked
only at the start of the reclosing cycle. The signal will disappear after tripping, but the CB
will still be able to perform the C-O sequence. For the selection CO (CB ready for a Close
– Open cycle) the condition is also checked after the set auto-reclosing dead time. This
selection has a value first of all at multi-shot reclosing to ensure that the CB is ready for
a C-O sequence at shot 2 and further shots. During single-shot reclosing, the OCO
selection can be used. A breaker shall according to its duty cycle always have storing
energy for a CO operation after the first trip. (IEC 56 duty cycle is O-0.3 secCO-3minCO).
tPulse , Breaker closing command pulse duration
The pulse should be long enough to ensure reliable operation of the CB. A typical setting
may be tPulse=200 ms. A longer pulse setting may facilitate dynamic indication at testing,
for example in "Debug" mode of PCM600 Application Configuration Tool (ACT).
BlockByUnsucCl
Setting of whether an Unsuccessful Auto-Reclose attempt shall set the Auto- Reclose in
Block. If used the inputs BLKOFF must be configured to unblock the function after an
unsuccessful Reclosing attempt. Normal setting is Disabled.
UnsucClByCBChk , Unsuccessful closing by CB check
The normal setting is NoCBCheck. The "auto-reclosing unsuccessful" event is then
decided by a new trip within the reclaim reclaimreset time after the last reclosing shot. If
1MRK 506 334-UUS A
Application manual