Basler Electric BE1-700 - Manual (Page 192)

the relay trips. This is typically the AProtection Picked Up@ expression (VO12) in all of the preprogrammed
schemes. Zone sequence uses a BESTlogic expression but is not within the logic settings. Zone-
sequence coordination may be enabled by the expression SP-79ZONE=VO12.
700C-OC79-A-BE logic allows the recloser to torque control the 50TP/N/Q functions (typically used for
low set instantaneous protection) during various steps in the reclosing sequence. Setting the recloser
Sequence Controlled Blocking output in the two setting groups is done by using the S#-79SCB
commands for BESTCOMS.
Recloser timing is stopped by the wait input if an overcurrent protection function block is picked up
(VO12) and timing. This prevents the reset timer from resetting the reclose function for a situation where a
51 element is just above pickup and the time to trip is longer than the reset time.
Operation - Setting Group Selection
A setting group can be selected automatically or by using the communication ports or the front panel HMI.
Automatic setting group changes are based on current level and duration. Automatic setting group
changes for cold load pickup and/or dynamic setting adjustments are enabled by the SP-GROUP#
command. Setting group changes initiated by contact sensing inputs are not accommodated in this
scheme. But IN2, IN3, or IN4 can be programmed to provide this function.
Operation - Alarms
If the continuous self-test diagnostics of the relay detect an error, failsafe output contact OUTA will close
and the Relay Trouble LED of the HMI will light. OUTA will also close if relay operating power is lost. More
information about alarms is provided in Section 6, Reporting and Alarm Functions.
Outputs OUT4 and OUT5 are assigned to indicate user specified major or minor alarms. OUT4 indicates
minor alarms and OUT5 indicates major alarms. The user has the ability to specify which alarms are
announced as major or minor alarms. When an alarm is detected, the appropriate front panel LED will
light to indicate the alarm. Note that some alarms are non-latching and will clear when the alarm condition
goes away. Other alarms require a reset either by operating the front panel Reset pushbutton or by
issuing ASCII commands through a communication port. More information about alarms is provided in
Section 6, Reporting and Alarm Functions.
NOTE
When using OUT1 through OUT5 as alarm outputs, remember that these outputs
do not have normally closed failsafe output contacts.
8-10 BE1-700 Application 9376700990 Rev M