fafnir CONDURIX DU, Техническая документация инструкция

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Parametrisation Page 10/ 20
In configuration mode, the 4 mA or 20 mA point, or both reference points, can be modi-
fied in any order.
To define a reference point while the sensor is in configuration mode
• briefly (1 - 2 seconds) press “4 mA” button (2) to define a current consumption of
4 mA for the present immersed position of the sensor.
• briefly (1 - 2 seconds) press “20 mA” button (3) to define a current consumption
of 20 mA for the present immersed position of the sensor.
When the “4 mA” button is pressed, the LED goes out for 5 seconds. When the
“20 mA” button is pressed, the LED lights up permanently for 5 seconds. The sensor then
remains in configuration mode for a further 15 seconds before storing the change and
reverting to measuring mode.
The new configuration will not be adopted by the level sensor until it has
switched from configuration mode to measuring mode automatically (LED
goes out). The level sensor must, therefore, not be disconnected from the
power supply until this time.
6.2 Current consumption in failure mode
If a malfunction is preventing the level sensor from detecting levels correctly, the sensor
will enter failure mode after a short time. Failure mode signalling conforms to the
NAMUR NE43 recommendation. The failure current is set by default to 21.5 mA but this
value can also be set to 3.6 mA.
To configure current consumption in failure mode (see Figure 5):
(1) Unscrew cap (1) using an open - ended spanner.
(2) Press and hold both the “4 mA” button (2) and “20 mA” button (3) simultan e-
ously for at least 3 seconds.
Green LED (4) “Cal/Err” flashes rapidly. The current consumption of the level sensor is
16 mA. After 5 seconds, the LED stops flashing and indicates the selected failure current
consumption for 2.5 seconds. If the LED is on permanently, failure current consumption is
21.5 mA; if the LED turns off, failure current consumption is 3.6 mA. If no button is
pressed again, the level sensor remains in failure mode for a further 2.5 seconds before
reverting to measuring mode and discarding the change.
• For adjusting the current consumption of 3.6 mA during the dwell time (10 sec)
in the fault mode, briefly (1 - 2 seconds) press the "4 mA" button (2).
• For adjusting the current consumption of 21.5 mA during the dwell time (10 sec)
in the fault mode, briefly (1 - 2 seconds) press the "20 mA" button (3).