KN5125 - Detector IFM - Free user manual and instructions
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USER MANUAL KN5125 IFM
Capacitive level switch
Détector de niveau
capacitif
KN
Function and features
The capacitive level switch controls the level in vessels. It detects if target medium is present or not and provides a switched signal.
- Adjustable to the target medium by means of a programming button or by an electrical signal on the function check output.
LED's red, yellow, green
Installation
Units of the type KNM30BSA... should be mounted into the vessel wall.
The sensor is in contact with the target medium.
Suitable for dry target medium.
Units of the type KNM30NSA... should be mounted outside the vessel. The sensor detects the target medium through the vessel wall.
Suitable for both dry and liquid target media.
Only for non-metallic vessels.
Electrical connection
Disconnect power before connecting the unit. Connect according to the indications on the type label.
Setting
- With target medium absent
The setpoint is adjusted while the vessel is empty. When target medium is detected, the sensor's output switches. The switch-on and switch-off points are automatically generated.
- With target medium present
For most applications setting the sensor while the vessel is empty is sufficient. You can, if you wish, make an additional adjustment with the target medium present (e.g. to obtain an optimum excess gain for special applications).
*You can adjust the setpoint via pin 2 (fc output).
(signal length = duration of pressing the button)
Type FPKG: (+U_B) to pin 2; type FNKG: (-U_B) to pin 2.
The setpoint values made with an empty vessel are not overwritten by automatic setting while the vessel is full. You can update adjustment with the vessel full as often as you wish. (Automatic setting with the vessel full will return the "full" setting to the factory default.)
If adjustment is not possible (e.g. "empty" signal strength and "full" signal strength are almost the same), the red LED flashes after setting (in addition the function check output provides a 2Hz signal).
Press the button briefly (= acknowledgement) and repeat setting.
Locking / Unlocking:
| 1 | Press for at least 10s* | → | At first the green LED flashes slowly, then faster. After 10s it goes out. The unit is locked. |
| 2 | Press for at least 10s* | → | After 10s all LED's go out for a short time. The unit is unlocked and the LED's indicate the current operating status. |
*You can also lock/unlock the unit via pin 2 (fc output).
(signal length = duration of pressing the button)
Type FPKG: (+U_B) to pin 2.
Type FNKG: (-U_B) to pin 2.
Operation
Check whether the unit functions properly. Indication by LED's and by the function check output:
| LED green | unit is ready for operation |
| LED yellow lit | = output is switched flashing = output is short-circuited |
| LED red + fc output | ON = uncertain range: - when the vessel is full: target medium is not safely detected - when the vessel is empty: the "empty" signal has changed since the last setpoint adjustment (e.g. due to excessive build-up of deposits). flashing + 2Hz signal of the fc output = error in setting or locking / unlocking. |
