General Informations
The device can be used in electrical panels, laboratories and test devices. With
the assistance of a current transformer, it measures the AC current passing
through the system in terms of Amper unite. If the current exceeds the
adjusted current then then alarm led starts to blink and after the the adjusted
time delay it changes the outputs possition.
When the current exceeds the adjusted over current value the device starts to
count for the adjusted delay time and after that it opens its output contacts.
After energizing the device, “dA -b “ message appears on it's screen for 2
seconds and then it starts to show the current value.
■ The current transformer ratio can be adjusted between 5/5 and 10000/5 using
the touch buttons on the front panel of the device.
■ Stores the maximum demand value and the peak value on its memory and
keeps these values even if the energy supply goes off.
■ When the measured value of the seconder current reaches 5,1 A, “ OvEr”
message starts to flash on the screen to warn the user that the value of the
current exceeded the limit values.
Fast Buttons:
While in measurement screen, pressing up button shows the peak value
Pressing down button shows the maximum demand value
Main Menu :
Pressing on the set button leads to the main menu. The menu contains
OP
,
CLr
,
SEt
and
quIt
in order.
► OP:
Shows the opening counter “ that occures when the adjusted over
current values being exceeded.
► Clr:
Peak and maximum demand values can be cleared in this menu. To
enter this menu, set button must be pressed.
cALL
,
c-OP
,
c-dp
and
quIt
submenus are included within this menu.
► cALL :
It is used to clear all peak, maximum demand and
opening counter values by pressing the set button.
► c-OP :
It is used only to clear the opening counter value.
► c-dp :
It is used only to clear the peak and the maximum
demand values.
► quIt :
To exit the submenus and return back to the main menu.
► Set :
The menu that parameters can be adjusted in. to enter this menu set
button must be pressed.
ctrF
,
SP
,
hYS
,
d-t
,
Sd-t
,
r-t
,
dd-t
,
CO
,
LtCh
,
tP
, and
quıt
submenus are included within this menu. These
parameters will flash on the screen. In order to change any of
them set button must be pressed, then the screen will stop flashing
and using the direction buttons the new value can be applied.
Pressing the set button again would store this value.
► ctrF :
Current transformer ratio.
It can be set between 5 and
10000. Inorder to set the value, set button must be
pressed then using the direction button the aimed value
can be set. Pressing set again would store the new value.
► SP :
Over current value set menu.
It can be set between the
maximum current allowed for the current transformer and
%10 of the that value. For example for 500/5A
transformer, it can be set between 50 and 500A.
► hYS :
The percentage Hysteresis value.
It can be adjusted
between 0,03 and 0,50. When the current exceeds the
adjusted over current value then an opening occures.
In order to close the output contact again, the current
must go below the adjusted over current value multiplied
by the %hYS, otherwise it will keep the output open.
► d-t :
Delay time.
It can be adjusted between 1 and 30 seconds.
The opening of current exceeding adjusted current limit
occures after this delay.
► Sd-t :
Start delay time. It can be set btween 0 and 60 seconds.
It is used to prevent any unwanted opening while current
is starting from 0 “ especially for motors that need high
Technical Data
Operational Voltage (Un)
: 230Vac
Operating range
: (0,8-1,1) x Un
Frequency
: 50/60 Hz
Power Consumption
: < 4VA
Measurement Sensitivity
: %1 +1 digit
Current Transformer Ratio
: 5/5..........10000/5 A
Display
: 4 Digits Led Display
Contact Current
: Max. 3A / 240Vac
Protection Class
: IP 20
Terminal Protection Class
: IP 00
Operating Temperature
: - 5 °C .... + 50 °C
Operating Humidity
: %15 ...... %95
(without condensation)
Installation
: to the panel tap
Dimensions
:DAM – B – 96 ( 96x96x80 mm)
: DAM – B– 72 ( 72x72x80 mm)
: DAM – B – 48 ( 48x48x50 mm)
I(A)
Re
Re
SP
%
hYS
(SP) x 1,50
CO =0000
CO=0001
t
t
t
Sd-t
d-t
r-t
d-t
r-t
r-t
t
P=0001
t
P=0000
DAM – B
®
DIGITAL UNIVERSAL AMPERMETER (True RMS)
► With Demand
► Over Current Adjustment
current for start up”. In this period opening wouldn't
occure even if the current exceeds the adjusted over
current value. If this value is set to “0000” the the
device will wait for the delay time d-t and then opens its
output.
► r-t :
Return time.
The time required to turn back from an
alarm situation. The device waits for that period after
the current returns below the adjusted value. It can be
set between 2 and 10 seconds.
► dd-t :
Demand time.
The tıme interval in which the demand
value is calculated. It can be adjusted between 10 to 60
minutes
► CO :
The menu to adjust the output contact position.
■ if the value is set to 0000 then the output in normal situation is
closed contact and is alarm situation is open contact.
■ if the value is set to 0001 then the output in normal situation is
open contact and is alarm situation is closed contact.
► LtCh :
Latch function.
The place to choose wether the device
will go out of an alarm manually or automatically
■ if the value is set to 0000 then the latch function is off and the
device will go out of the alarm automatically
■ if the value is set to 0001 then the latch function is on and the
device wouldn't go out of the alarm unless the user
presses the set button until the alarm led turns off. If
pressed, then device then will go out of the alarm after
the delay time r-t.
► tP :
Sudden opening function. If the current goes over %150
of the adjusted over current value the the device will
open its output without any delay.
■ if 0000 then the function is disabled .
■ if 0001 then the function is enabled.
( not active while start delay time (Sd-t)).
► quıt :
Pressing set leads to the main menu.
► quıt :
Pressing set leads to the measurement screen.
Button Functions :
To enter the menu set button must be pressed. Within the menu, the
parameters can e reached using the direction buttons. To inter the desired
menu set button must be pushed again. This parameters can be adjusted
using the direction buttons, pressing the set button again stores the new
parameters.
