Two alarm resetting modes are available: manual, by pressing the RESET button for about 5
seconds, or else automatic when the alarm condition disappears.
However, in the case of automatic resetting, if more than 3 alarms occur within one hour, a
manual reset is required; this indicates a probable faulty condition in the system being monitored.
The overtemperature alarm always requires manual resetting.
3.7 Selection of default measurements on the display
To preset the default measurement appearing on the display when switching on the instrument,
select the required measurement on the display and press the SCROLL key together with the
3.8 Cyclic scanning of the measurements on the display
For cyclic scanning of all the measurements on the display every 3 seconds, press the
+
key together with the
3.9 Testing of cooling device
The cooling device control relay can be energized manually by pressing the RESET button
+
together with the
4. Start up and Set up of the operating parameters
Connect the instrument to the system under control according to
diagram and switch it on: the instrument automatically switches to measuring mode and
displays the default measurement.
To access the operating parameter programming functions press the SCROLL and
keys at the same time for about 10 seconds. After switching to the programming mode,
the instrument indicates with relative led's the parameters to be programmed by flashing
their current value on the display.
The equivalence between the programming parameters and the led's is as follows:
Voltage threshold
Primary current CT
THD% threshold
Ratio measure
+
Use the
and
point to the next parameter. When the RESET key is pressed for 5 seconds, the default
value of the current parameter is forced.
To quit the programming mode, wait for about 10 seconds without pressing any key: at
the end, the instrument automatically returns to the measuring mode.
The following table gives the programming values for each parameter.
IT ALFARAD S.p .A. vi a IV novembre n.1 Minerbio (BO) It aly
-
key. Press the SCROLL key to interrupt the cyclic scanning.
key; press the RESET together with the
Parameter
THD delay
T° threshold
Delta T°
Type of reset
-
keys to modify the displayed parameters and the SCROLL key to
Led
Led V
Led I
Led THD%
Led THD% together with Led Iharm
Led T°
Led T° together with Led Iharm
All Led's off
Led V flashing
17
-
key to de-energize it.
the connection
-
key.
+
GB