V
Re t
t
t-1
(o-U)
(u-U)
r-t t-1 r-t
Umax
Umin
Under Voltage
Over Voltage L1
L2
L3
Normal
Normal
Over a
d U
der Voltage : (o-U),(u-U)
Under voltage (u-U) it can adjusted betw een Umin= (300 – 370 V).
Umax=(390 – 460 V).
If the voltage drops below the adjusted under voltage limit w hen u-U
show s on the screen and device sw itch off its output contact end of
the t-1 time Normal LED turned on .In this case u-U w arn appears on
the screen.
If the voltage exceed the adjusted over voltage limit Normal LED
turned off and output relay sw itch off. In this case o-U w arn appers
on its screen.
Hysteresis is 6 V.
I(A)
Re t
t
Sdt d-t r-t d-t r-t
o-C
u-C
%hYS
%hYS
2.6 Asym m e tric Curre
t Protectio
:
It can be set by the user betw een 5% and 40%. It controls the
asymmetric that may occur in the current of the three phases. That
may occur w hen o and the other one
is high. That may cause asymmetric current in the motor's bobbin.
This w ay the motor's bobbin is protected. Furthermore it protects the
motor f rom missing phase or a possible unplugged or cut w iring.
If the unbalance betw een the phases' current exceeds the adjusted
value the sw itch off occurs after t-1 delay.
If the current unbalance exceed the adjusted value Normal LED
turned off and output relay sw itch off. In this case ubC w arn
appears on its screen.
This function can be disable if ubC value = 000 (oFF)
Over a
d U
der Curre
t : (o-C),(u-C)
When the current of the protected system goes below the adjusted
value it sw itches off its output contact af ter d-t delay.
Normal LED turn of f and relay sw itch off its contact .In this case
u-C w arn appears on display.
When any current passing through any phase of the protected
system
exceeds the adjusted value the device sw itches off its output
contacts after a proper time (d-t).Normal LED turn off and relay
sw itch of f its contact .In this case o-C w arn appears on display.
NOTE: Under current protection set value with its hysteresis must
not overlap with over current protection set value with its hysteresis
or, the under current protection set value must not b e higher than the
over current protection set value.
VOC
OC
r-t r-t
Re t
t
t-2
(o-F)
(u-F)
r-t t-2 r-t
55 Hz
45 Hz
Under Frequency
Over Frequency L1
L2
L3
Normal
Normal
f (Hz)
Start delay tim e: Sd-t
It can be set betw een 1 and 60 seconds.It is used to prevent the
sw itch of f f rom occurance because of the motor's inrush current.
This function can be disable if Sd-t value = 000 (oFF)
Re tur
Tim e : r-t
it show s the delay time that device w ill w ait to sw itch on its output
Very Over Curre
t Coefficie
t : VOC (Current Very Sudden
Sw itch Off Protection)
When the current value exceeds the adjusted value w ithin the start
delay time
the device sw itches of f
its output contact immediately.
Very Over Current value = (o – C) x (VOC)
This function can be disable if VOC = 000 (oFF)
Over Curre
t Coefficie
t : OC (Current Sudden Sw itch Off
Protection)
delay time
the device sw itches of f
its output contact immediately.
Over Current value = (o – C) x (OC)
This function can be disable if OC = 000 (oFF)
Over a
d/or U
der Freque
cy Protectio
: ( 40 – 70 Hz )
Under Frequency be able to set betw een(u-F) = 40 Hz ...[(o-F) -0 4]
Over Frequency be able to set betw een (o-F) =[(u-F) + 0
4]...70 Hz
If required it can be set only under frequency or only over
frequency protector only. (if system frequency above 55 Hz under
screen displays o-F w arning and end of time t-2 relay sw itch off
its output contact )
if o-F = oFF and u-F = 45 Hz set device w orks as under
frequency protector only . (if system frequency below 45 Hz
under screen displays u-F w arning and end of time t-2 relay
sw itch of f its out contact.)
if o-F = oFF and u-F = oFF set frequency protection is disabled.
LOCKING FUNCTION :
It can be controlled by tw o parameters. Locking time and
Locking counter. If the number of opening reaches the
adjusted locking counter w ithing the adjusted locking time then
device sw itch off its contact and locks its f unctions until the
user pressed Rese t button.
If the locking counter is adjusted to oto then this function is
disable and device never locks itself.
L-t : Locki
g Tim e ( 001 – 060 min. )
It is w ell know the frequently occurring faults may damage
system. For that the device w hen number of faults reaches the
adjusted locking number w ithin this locking time. This w ay the
system is protected and user has chance to investigate the
problem.
g
( )
The number of f aults allow ed w ithin the period L-t. If number of
faults exceeds this adjusted counter value device locks itself.
In this case (- - -) w arn appears on its screen. User must
press Reset button then the fault passes in order to unlock the
device.
V
Re
t
t
(o-U)
(u-U)
r-t
Over Voltage
1. E rror L1
L2
L3
Normal
Normal
L- C (number of lock) = 2 piece
L- t (lock time) = 3 min. if select ;
t-1 t-1 r-t
Pushed to Res et button
and Loc k have res eted.
Loc ked oc c urred
< 3 mi nutes
Over Voltage
2. Error
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Electronics Katrangi Trading
ne of the phases' voltage is low
Over voltage (o-U) it can adjusted betw een
If o-F = 55 Hz and u-F = oFF set device w orks as over
frequency protection as w ell as both of protection can be disabled.
Under Current (u-C)
Over Current (o-C)
relay w hen f ailure ends after a sw itch of f. It can be set betw een 0 5
and 99 9 seconds.
It can be set by the user betw een 2 1 and 6.
It can be set by the user betw een 1 1 and 2.
When the current value exceeds the adjusted value w ithout th start e
p p tyIf L- C is set to oto then this ro er is disabled.
L-C : Locki g Cou ter oto 001 – 010 iece p
