Sel 411L - Page 793

P.12.33
Date Code 20151029 Protection Manual SEL-411L Relay
Bay Control
ACSELERATOR QuickSet SEL-5030 Software Bay Control Screens
Disconnect Close/Open Immobility Timers. The close/open
immobility timers are triggered at the same time as the seal-in timers, and
assert only to report a disconnect switch failure to start moving out of its
initial open/close position.
Set the immobility timer longer than the expected time for disconnect switch
to leave the initial position reported by the 89AMm and 89BMm Relay Word
bits, but less the seal-in timer.
89CITm and 89OITm are entered in cycles and have a range of 1–99999. The
example shown anticipates a disconnect switch operate time of approximately
20 cycles.
Cold weather and low battery voltages can impact disconnect switch operation
times. Be sure to consider these conditions when setting the immobility
timers.
89CIT01 := 20
89OIT01 := 20
Disconnect Close/Open Reset. Program SELOGIC control equations
89CRSm and 89ORSm to reset the close or open disconnect m outputs,
respectively.
The default settings reset the seal-in circuit when either the seal-in timer
expires or the intended close/open status signal asserts. This is intended to
stop driving the disconnect switch motor close or open, when the desired
position has been reached.
89CRSm := 89CLm OR 89CSIm
89ORSm := 89OPNm OR 89OSIm
Disconnect Close/Open Block. Program SELOGIC control equations
89CBLm and 89OBLm to provide an optional custom method for blocking all
means of close/open control, respectively.
The default settings are NA.
89CBLm := NA
89OBLm := NA
This concludes the settings for Disconnect 1. To set up Disconnect 2, click on
the box to the right of Disconnect 2, and a setting sheet similar to Figure 12.21
pops up. Then enter the following descriptive control screen names for D2 and
D3, respectively.
D0CTLN := BB 2
D0CTLN := LINE DIS.
Breaker Assignments
The relay supports two breaker control, and indication for a third breaker.
Click on the box to the left of the circuit breaker in the one-line diagram, and a
setting sheet for the breaker in Figure 12.22 will come up. When OK is
clicked, the form is closed and the settings are updated in the bay control
settings. When Cancel is clicked, the form is closed and settings are not
saved.