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DA5-IU-C
2. Inputs
Latch/Reset (Terminal 4)
Static input for display storage. If it is activated
(pnp) with a 4 ... 30 V DC input signal, the
current measuring value is retained on the
display until this input is released or its signal
level sinks below 2 V DC. The determination
of the minimum and maximum value continues
in the background. If an electrical reset is
programmed for MIN, MAX, or for the Totalizer
function, the function of the input changes to
that of a reset input. It is therefore no longer
possible to perform a Latch.
Current input (Terminal 5)
Analog current measurement input with rever-
se polarity protection and current limitation to
50 mA. The signal line carrying the analog +
signal must be connected here.
To prevent interference signals due
!
to the power supply, this input is
galvanically isolated. Therefore, the
most negative signal line must be
connected to the analog reference
ground input for measurement.
Analog GND (Terminal 6)
Analog reference input.
If no galvanic separation is required between
the measuring circuit and the supply voltage,
pin 2 or 3 must be connected to this terminal.
Voltage input (Terminal 7)
Analog voltage measurement input.
The signal line carrying the analog + signal
must be connected here. In case of reverse
polarity, this input is protected by a diode.
To prevent interference signals due
!
to the power supply, this input is
galvanically isolated. Therefore, the
most negative signal line must be
connected to the analog reference
ground input for measurement.
3. Setting of the operating parameters
3.1 Selection of the displayed value and
reset of the minimum, maximum values
and of the totalizer
Pressing the right key allows switching etween
the display of the current measured value, the
minimum and maximum value and the totalizer
value, provided these have been activated
during programming.
Press once to display the current function
("Act", "Min", "Max" or "totAL") for 2 seconds.
If the right key is pressed once more during
this period, the current function changes and
"Act", "Min", "Max" or "totAL" is displayed for
about 2 seconds for confirmation. Then, the
value is displayed. If "Min", "Max" or "totAL" is
selected, this value can be erased by pressing
the left red key, provided the reset has been
enabled in the programming menu. If neither
the maximum or minimum value storage nor
the totalizer function has been activated in
the setup, the keys have no function during
operation.
3.2 Setting the device parameters
a.
Keep both front side keys depressed and
switch the supply on, or, if the power sup-
ply is on, press both keys simultaneously
for 5 seconds
b.
The following message is displayed
c.
As soon as the keys are released, the fol-
lowing message is displayed
c1. To abort the programming cycle, keep the
left key depressed and press the right key.
c2. Press the right key to switch to
d.
To switch to the first parameter, keep the
left key depressed and press the right key
e.
As soon as the key is released, the dis-
play alternates every second between
the menu title and the current menu item
setting. If a key is pressed, only the menu
item setting remains displayed.
f.
Press the right key to change the menu
item setting by one value every time. If
numerical values are to be input (e.g. to
set the factor), select the decade with the
Page 3 (R60046.9398 - Index 1)
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