KN5119 - Détecteur de niveau capacitif IFM - Free user manual and instructions

USER MANUAL KN5119 IFM

• Automatic adjustment to the medium to be detected by means of programming button. 2 Electrical connection Disconnect power before connecting the unit (see type label). Core colours: BN = brown, BU = blue, BK = black

(1) Electrical connection (plug or cable) (2) LEDs red, yellow, green (3) Programming button (4) Threaded sleeve (5) Active face3 Mounting Mount the proximity switch as shown and then program it. 4 Operation Adjust the sensor. To do so, press the programming button with a blunt object. 5 Programming Operating mode Immediately after power on the proximity switch is in the operating mode. In this mode all normal sensor functions are active. You can also make the following settings on the unit:

• Adjustment mode Switch point setting by adjustment to the empty and full state.

• Locking mode Electronic lock to avoid tampering.

• Setting the output function as normally closed or normally open.

not in contact with the medium in contact with the mediumAdjustment mode empty state The sensor is adjusted to the empty vessel. If it detects material, the swit- ched signal changes. Then carry out steps 1 and 2. Adjustment mode full state Fill the vessel so that the sensor detects the material.

Press the programming button for max. 5s Release the programming button before the 5s have elapsed The green LED flashes (= the unit is in the adjustment mode) The green LED is lit continuously (= the unit is adjusted and in the operating mode)Then carry out steps 1 and 2. Note: The adjustment to the full state is not absolutely necessary for the operation of the unit but it is recommended. On the basis of the val- ues for the empty state/full state the internal microprocessor deter- mines the optimum position of the switching thresholds. If you use both adjustment criteria (adjustment to the empty and full state), you obtain the maximum operational reliability for your individual applica- tion. Locking mode The stored adjustment values can be protected against unauthorised programming as follows (output state not locked): When the programming button is released the unit is locked and all programming functions are inactive. The unit returns to the operating mode.

Press the programming button for about 5 ... 10s Release the programming button after 5 to 10s The green LED first flas- hes slowly (about 1Hz), after 5s more quickly (about 2Hz); the unit is in the adjustment mode Shortly afterwards the green LED is lit continuously (= the unit is adjusted and again in the operating mode)

Press the programming button for min. 10s The green LED first flas- hes slowly (about 1Hz), after 5s more quickly (about 2Hz), after 10s it goes out. The unit is lockedIf this operation starts from the locked state, the green LED does not react at first to avoid any hint to a hidden function. If you want to release the locking, proceed as follows: When the programming button is released the unit is unlocked and all programming functions are active again. The unit returns to the oper- ating mode. Setting the output function as normally closed or normally open The switching output of the unit can be operated as normally closed or normally open. To do so, the unit must first be disconnected. To generate the inverted output response the operating voltage is con- nected again by reversing the wires. Error messages If the adjustment to the empty or full state is not possible, the red LED flashes quickly after the adjustment attempt (about 2Hz). To delete this error message press the programming button once or dis- connect and then connect power again. The adjustment values suc- cessfully read so far remain unchanged. Possible reasons for an error message:

• The signal difference between the empty and full state is too small (e.g. adjustment to the empty and full state without sufficient change of the level).

• The signal change between the empty and full state is in the wrong order (e.g. adjustment to the empty state when the vessel is full and then adjustment to the full state when the vessel is empty).

Press the programming button for min. 10s After about 10s all LEDs go out briefly. The unit is unlocked again and the LEDs indicate the current operating state• Adjustment to the empty state outside the operating range (e.g. adjustment to the empty state with direct contact with an electri- cally grounded medium, e.g. if the active face is immersed in water). Help: Avoid the above-mentioned errors and repeat the adjustment. Further faults:

• Electronic fault or sensing zone of the unit damaged

• Internal fault (can only be deleted by disconnecting and connecting power again, hardware reset). 6 Set-up / operation Check the safe functioning of the unit. Display by LEDs. The red LED indicates no malfunction of the unit, it indicates that the internal sensor signal is near the switching threshold. Two cases can be distinguished:

• Normal operation/safe operation The red LED is lit temporarily during the change between "medium" and "no medium".