60
FUNCTION CHARACTERISTICS
Operation and settings
All elements can be enabled or disabled by setting ON or OFF the Enableand State parameters
inside the Set \ Profile A (or B or C or D)\ Overexcitation - 24 \ (U/f)AL Element ((U/f)> Element or
(U/f)>> Element ) \ Setpoints(Definite time-Inverse time) menus.
Tripping of alarm (U/f )AL and/or first element (U/f )> may be inhibited by the start of the second
element (U/f )>> by setting ON the (
U/f)AL disabling by (U/f)>> and/or e (U/f)> disabling
by (U/f)>>parameter available inside the Set \ Profile A (or B or C or D)\ Overexcitation - 24 \
(U/f)>> Element \ Setpoints
menu.
The elements are enabled in the 20 Hz ... 60 frequency range.
all-F24.ai
General logic diagram of the overfluxing elements - 24
U/f U/f U/f
Block1
Block1
Block3
Block1 Block1
Block3
Reset t
U/f>RES
Block1 Block1
U/f >> element U/f > element U/f
AL
element
U/f>>
U/f>
inverse/definite-time
t
U/f>>
U/f
AL
t
U/fAL
t
U/f>
t
U/f>RES
2nd Pickup Element
1st Pickup Element
Alarm Pickup Element
U/f>> Start
U/f>> Start
U/f>> Start
U/f>> Trip
U/f> Start
U/f> Start
U/f> Trip
U/f
AL
Start
U/f
AL
Trip
U/f> inhibition
&
&
≥
U/f
AL
Inhibition
&
U/f
AL
Inhibition
U/f
AL
Inhibition
U/f> inhibition
Fun-F24_S1.ai
U/f > (U/f)
AL
&
RESET
t
U/fAL
0T
TRIPPING MATRIX
(LED+RELAYS)
U/f
AL
t
U/fAL
U/f AL Start
U/f AL Start
U/f AL Trip
U/f AL Trip
≥1
(ON≡
Inhibit
)
(ON≡
Inhibit
)
F24SA Block3
IF Start
U/f> Block1
U/f
U/fAL Inhibition
U/f> Inhibition
=0 if 20≤f≤60 Hz
U/f AL Start
U/f AL Trip
&
&
&
Enable (ON≡Enable)
Block1 input (ON≡Block)
Block1
Block1
Block1
Binary input INx
T 0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T0
n.o.
n.c.
INx
t
OFF
Overfluxing protection (24) - Alarm element logic diagram
XMR-T EQUIPMENT MANUAL
Ed. 2.9 - 02/2021
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