ELAP VD4 Vcc User manual

s.p.a. - Via Vittorio Veneto, 4 – I-20094 CORSICO (MI)
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VD4 Vcc PANEL DIGITAL READOUT
INPUT BY DIRECT VOLTAGES
OPERATING MANUAL
Digital readouts series VD4 Vcc accept as input direct voltage signals with a value proportional to the measure to
be displayed. The value of the displayed magnitude can be adjusted between –9999 and 9999.
In case of values beneath –999 the minus sign is indicated by a dot placed on the right side of the less
significative digit.
The default display mode is absolute. The absolute/relative display mode can be enabled by the menu SETUP
(selecting mode: REL)
TECHNICAL SPECIFICATIONS:
Supply 24 Vac or 115/230 Vac ±10% 50/60 Hz
12/24Vdc ±15%* (see the supply label)
Power consumption 4 VA max (version 24/115/230 Vac)
2.5/5 Watt (version 12/24Vdc)
Display type 4-digit 7-segment LED display 12.7 mm high
Data and preset storing on FLASH memory
Display range -9999 / 9999
Decimal digits settable: 0, 1 ,2 or 3
Operating temperature 0 ÷ 45 °C
Panel cut off 91 x 44 mm
Input voltage ±2Vdc, ±20Vdc, ±200Vdc max (see the connection diagram)
Input specifications resolution 4000 steps, accuracy 0.2% full scale range
A/D conversion 140 per sec.
Front case protection degree IP54
*Remark: In case of direct current supply the negative pole of the supply voltage (terminal 1) is connected to O
Vdc of the input circuit (terminal 7).
OPERATING DESCRIPTION
At power on the instrument displays the software version identification for one second: T-XX-, where XX is the
number of the loaded software; afterwards the displays switches to the main display page.
SETUP PHASE
The SETUP phase is accessed by the following key
sequence: press the key F for 3 seconds and, when
the display shows: SET, enter the following access
key: UP ARROW, F, UP ARROW, UP ARROW,
F.
If the access key is not entered within 10 seconds the
instrument switches back to the main display page.
The SETUP menu includes the following items, which
can be scrolled down by the key F:
tAr (Adjusting) Default: 0 / 4000
n.dEC (Decimal digits) Default: 0
KEYS FUNCTION:
UP ARROW increases the value
DOWN ARROWdecreases the value
F stores the value and leaves the set phase
ADJUSTING PHASE
The adjusting phase allows to set the min. and max.
values that must be displayed according to the relevant
input voltages.
Press one of the ARROW KEYS when the display
shows TAR; the message LO (zero adjusting) will be
shown. Make sure the the input voltage is at its
minimum value and set the wished value by means of
the ARROW KEYS, then confirm the setting by the
key F.
Following the display will show Hi (max value
adjusting):make sure that the input voltage is at is
max.value and set the wished value by means of the
ARROW KEYS, then confirm the value by the key F
and switch to the next setting.
In case the adjusting operation fails, the display will
show Er.tA (adjusting error). In this case it is
advisable to check that the value set as max. is greater
than the min.setting, and that connections are correct.
DECIMAL DIGITS SETTING
When the display shows n.dEC (number of decimal
digits) press the DOWN ARROW key sequentially to
scroll 0, 1, 2, 3 decimal digit. Press the key Fto store
the choice.