2.7 Under Current Protection:
It can be set by the user between x 0.1 and
x 1 of the current transformer value.
It works only on full protection mode (Prg2).
When the current of the protected motor
goes below the adjusted value it switches
off its output contact after t2 delay.
It goes active after the start delay ends.
After a switch off of an under current
alarm, while automatic reset is selected, if
the current value returns to the normal value
or zero value then switch on occurs after a
proper period (T-on). If manual reset is
selected, the switch off will continue until
the operator pushes the reset button.
Pressing the set button for 3 seconds
resets the device.
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.
Otherwise, (LinE ovEr Eror) message will
appear on the screen and the output
contact will be switched off. In this case
you should check the over and the under
current set values.
hyS
oSEt
hyS
uSEt
hyS
oSEt
hyS
uSEt
hyS
oSEt
hyS
uSEt
3. Password Inquiry and Menu Entry
3.1 Password Inquiry
If you push the SET button, the password inquiry menu shows up. Using the
direction buttons, the authorized operator can increase or decrease the digit
value to reach the required value, then pushes SET button to move to the next
digit. After inputing the last digit, pushing the SET button approves the
password. The “ - “ on the middle screen makes the digit follow up easier. This
way the user knows how many digits he already input.
After the password approval, the user gets “Accepted” or “Rejected” message on
the screen for 3 seconds. After that the program main menu shows up, In case
of wrong password entry, the user can move through the menu but can not make
any changes in the program settings.
Pushing the down button shows the menus under the main menu that are in
order:protection program selection, alarm control menu, current setting menu,
voltage settings menu, reset settings menu, power on timing settings,
password menu, failure lock timing settings (in the automatic mode), failue
lock counter settings (in the automatic mode), and factory settings.
Viewing Menus:
Because the device is password protected, in case of wrong password entry,
the password and the factory settings menus are not shown, the other menus
are shown but not changeable. Only correct password entry shows all menus
and gives the abilitiy of changing the device settigs.
Buttons Use:
The user can move through the menus using the direction buttons (up – down).
When he reaches the required settings he gains access to change the setting
by pressing the SET button, the shown value then blinks. Uses the direction
buttons to change the values, and pushes the SET button again to store the
changes. The blinking values stops blinking then. The user can go to the upper
menu seeking the quit command using the direction buttons and then pushing
the SET button.
hyS
oSEt
hyS
uSEt
(Over current hysteresis)
(Over current set value)
(Under current hysteresis)
(Under current set value)
hyS
oSEt
hyS
(Over current hysteresis)
(Over current set value)
(Under current hysteresis)
(Under current set value)
hyS
oSEt
hyS
uSEt
(Over current hysteresis)
(Over current set value)
(Under current hysteresis)
(Under current set value)
Current
It increases or decreases
the value of the password
S
Enter
S
When the set button is pushed, the password
at the bottom screen puts the digit value in
the digit division “-” and it slides the digit line
to the left digit
Accepted
rejected
S
3.5 Voltage
Settings Menu
S
S
Increase
Decrease
S
S
3.4 Current
Settings Menu
3.3 To Alarm
Control Menu
S
Increase
Decrease
Increase
Decrease
3.11 Factory
Settings
3.10 To
Password
Menu
S
S
S
Exit
3.2Protection
Program
selection
3.6 Reset
Selection
3.7
Power-on
Time
Increase
Decrease
S
3.8 Lock
Time
Increase
Decrease
S
3.9 Lock
Time
MAIN MENU:
Digital Protector & Multimeter
Current & Voltage Protection
DP-01-
96
®
