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 between Umin= (300 – 370 V).
Over voltage (o-U) it can adjusted between Umax=(390 – 460 V).
If the voltage drops below the adjusted under voltage limit when u-U
shows on the screen and device switch off its output contact end of the
t-1 time Normal LED turned on .In this case u-U warn appears on the
screen.
If the voltage exceed the adjusted over voltage limit Normal LED
turned off and output relay switch off. In this case o-U warn 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 Asymmetric Curre t Protectio :
It can be set by the user between 5% and 40%. It controls the
asymmetric that may occur in the current of the three phases. That
may occur when one of the phases' voltage is low and the other one
is high. That may cause asymmetric current in the motor's bobbin.
This way the motor's bobbin is protected. Furthermore it protects the
motor from missing phase or a possible unplugged or cut wiring.
If the unbalance between the phases' current exceeds the adjusted
value the switch off occurs after t-1 delay.
If the current unbalance exceed the adjusted value Normal LED
turned off and output relay switch off. In this case ubC warn 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)
Under Current (u-C)
Over Current (o-C)
When the current of the protected system goes below the adjusted
value it switches off its output contact after d-t delay.
Normal LED turn off and relay switch off its contact .In this case
u-C warn appears on display.
When any current passing through any phase of the protected system
exceeds the adjusted value the device switches off its output contacts
after a proper time (d-t).Normal LED turn off and relay switch off its
contact .In this case o-C warn 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 be 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 time: Sd-t
It can be set between 1 and 60 seconds.It is used to prevent the switch
off from occurance because of the motor's inrush current.
This function can be disable if Sd-t value = 000 (oFF)
Retur Time : r-t
it shows the delay time that device will wait to switch on its output relay
when failure ends after a switch off. It can be set between 0 5 and 99 9
seconds.
Very Over Curre t Coefficie t : VOC (Current Very Sudden Switch
Off Protection)
It can be set by the user between 2 1 and 6.
When the current value exceeds the adjusted value within the start
delay time the device switches off 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 Switch Off Protection)
It can be set by the user between 1 1 and 2.
When the current value exceeds the adjusted value without the start
delay time the device switches off 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 between(u-F) = 40 Hz ...[(o-F) -0 4]
Over Frequency be able to set between (o-F) =[(u-F) + 0 4]...70 Hz
If required it can be set only under frequency or only over frequency
protection as well as both of protection can be disabled.
If o-F = 55 Hz and u-F = oFF set device works as over
frequency protector only. (if system frequency above 55 Hz under
screen displays o-F warning and end of time t-2 relay switch off its
output contact )
if o-F = oFF and u-F = 45 Hz set device works as under
frequency protector only . (if system frequency below 45 Hz under
screen displays u-F warning and end of time t-2 relay switch off its
out contact.)
if o-F = oFF and u-F = oFF set frequency protection is disabled.
LOCKING FUNCTION :
It can be controlled by two parameters. Locking time and
Locking counter. If the number of opening reaches the adjusted
locking counter withing the adjusted locking time then device
switch off its contact and locks its functions until the user
pressed Reset button.
If the locking counter is adjusted to oto then this function is
disable and device never locks itself.
L-t : Locki g Time ( 001 – 060 min. )
It is well know the frequently occurring faults may damage
system. For that the device when number of faults reaches the
adjusted locking number within this locking time. This way the
system is protected and user has chance to investigate the
problem.
L-C : Locki g Cou ter ( oto 001 – 010 piece )
The number of faults allowed within the period L-t. If number of
faults exceeds this adjusted counter value device locks itself.
In this case (- - -) warn appears on its screen. User must press
Reset button then the fault passes in order to unlock the device.
If L- C is set to oto then this property is disabled.
V
Re
t
t
(o-U)
(u-U)
r-t
Over Voltage
1. Error 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 Reset button
and Lock have reseted.
Locked occurred
< 3 minutes
Over Voltage
2. Error
