4–348 869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CONTROL CHAPTER 4: SETPOINTS
Figure 4-151: Navigation and SLD component selection
PB “Block” (Hardcoded SLD Pushbutton)
Blocking of a breaker (contactor) or switch can be used for simply inhibiting the close or
open operation while in Local Mode. The selected breaker (contactor) or disconnect switch
can be blocked. If block was not applied to the selected component, pressing “Block” PB
will block either the Open or Close command depending on the existing state (see
Figure 4-
152:SLD Pushbutton “Block” logic diagram). For example, if the selected component is in
opened state, pressing the PB “Block” will block the closing command, and vice versa (see
figures: Local Control for breakers/Local Control for switches). When the block is active, the
letter “B” appears in the SLD next to the controlled component
Figure 4-152: SLD Pushbutton “Block” logic diagram
894196A1.cdr
SLD Breaker Selection
5 min
Timer
Clears the selection
Setpoint
Bkr/Sw Select Timeout
OR
OR
SLD Switch Selection
PB “ESCAPE”
BKR 1
BKR 2
Contactor 1
BKR 2 Selected
FLEXLOGIC OPERANDS
Cnct 1 Selected
Cnct 2 Selected
SW 1 Selected
SW 2 Selected
SW 3 Selected
SW 4 Selected
SW 5 Selected
SW 6 Selected
SW 7 Selected
SW 8 Selected
NOTE: The selection of Breaker (Contactor) and Switches
is available only to those configured and included in the
SLD. Not used breakers and switches are skipped from
the sequence during navigation.
ESCAPE
ANDAND AN D AN D AND AND AND AND AND AND AND
SW 1
SW 2
SW 3
SW 4
SW 5
SW 6
SW 7
SW 8
AND
FLEXLOGIC OPERANDS
to Breaker Control logic
- to Switch Control logic
AND
BKR 1 Selected
Contactor 2
to Contactor Control logic
NOTE: 869 relay supports either Breaker or Contactor
associated with the protected motor. The selection is
performed from the Motor Setup menu.
MESSAGE
AND
Local Mode ON
FLEXLOGIC OPERAND
ENTER
Navigation Pushbuttons
PB “ENTER”
FLEXLOGIC OPERAND
SBO Enabled
894197A1.cdr
FLEXLOGIC OPERAND
BKR [X] Selected
SW [X] Selected
AND
S
Latch
R
Non-Volatile Latch
Reset-Dominant
positive
one shot
Block
PB “BLOCK”
AND
FLEXLOGIC OPERAND
Block ON
FLEXLOGIC OPERAND
Block OFF
OR
FLEXLOGIC OPERAND
SBO Enabled
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