TAVRIDA ELECTRIC ISM15_LD_1 Series, Инструкция по применению, Страница: 37 / 70

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Antipumping Duty
For close and trip inputs the following rule
is applicable: During close operation, if a
trip instruction is received before the close
instruction becomes passive then the close
instruction will be blocked. For the next
close operation the close instruction must
be reapplied after the trip instruction has
become passive (Figure 55).
Blocking Duty
For close and trip inputs the following
rule is applicable: If a close instruction is
received whilst a trip instruction remains
active then the close instruction is blocked.
For the next close operation the close
instruction must be reapplied after the trip
instruction has become passive (Figure 56).
Combined Blocking and
Antipumping Duty
A close command during a pending trip
command is not executed (blocking duty)
even it is pending longer than the trip
command (antipumping duty) (Figure 57).
Close contact
Trip contact
Output to
magnetic
actuator
ISM auxiliary switch
Close contact
Trip contact
Output to
magnetic
actuator
ISM auxiliary switch
Close contact
Trip contact
Output to
magnetic
actuator
ISM auxiliary switch
t
t
t
t
t
~ ~
~ ~
~ ~
~ ~
~ ~
t
t
t
t
t
~ ~
~ ~
~ ~
~ ~
~ ~
t
t
t
t
t
~ ~
~ ~
~ ~
~ ~
~ ~
Closed
Open
ON
OFF
Closed
Open
Closed
Open
Closed
Open
Closed
Open
Closed
Open
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Close command
Close command
Close command
Trip command
Trip command
Trip command
Figure 55
Figure 56
Figure 57
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