KG5025 - Proximity sensor IFM - Free user manual and instructions

Product type	Capacitive proximity sensor
Brand	IFM
Model	KG5025
Nominal range (Sn)	8 mm
Detectable materials	Metals, plastics, glass, ceramic, wood, paper, oils, greases, water and aqueous materials
Mounting	Non-flush, with mounting flange (nuts supplied)
Power supply	10-30 V DC
Switching output	Yes (on/off signal)
LED indicators	Green (operational), Yellow (switched output), Red (unsafe zone/error)
Setting	Automatic via push-button (threshold programming)
Locking/Unlocking	Yes (10-second long press)
Electrical connection	3 wires: brown (BN), blue (BU), black (BK)
Clearance zone around the active face	3 x Sn
Minimum distance between sensors (same version)	3 x Sn
Short-circuit protection	Yes (indicated by flashing yellow+red LED)
Automatic adaptation	Yes, to the product to be detected
Cleaning	Keep the active face free of deposits and foreign bodies
Safety	Disconnect the installation from power before connection
Manual available	Free PDF (10 pages, French, German, English)

Frequently Asked Questions - KG5025 IFM

How to set the detection threshold of the IFM KG5025 proximity sensor?

The setting is done in 4 steps: 1) Press the push-button for 5 seconds (yellow and green LEDs flash). 2) Place the product in the detection zone and briefly press the button. 3) Remove the product until the red LED turns off. 4) Press once to confirm. The device automatically adapts the threshold.

What does a steady red LED on the IFM KG5025 sensor mean?

A steady red LED indicates that the device is in an unsafe operating zone, meaning the detection threshold is not optimal. If it flashes, it signals an internal or setting error.

How to reset the IFM KG5025 sensor?

To reset the settings, press the setting button twice in programming mode. This allows switching to operating mode without changing the switching threshold. No factory reset is described in the manual.

What materials can be detected by the KG5025?

The sensor detects metals, plastics, glass, ceramic, wood, paper, oils, greases, water and all aqueous materials, without contact.

What is the nominal range of the IFM KG5025 sensor?

The nominal range (Sn) is 8 mm, measured on a grounded metal plate or on water. For other materials, the range may be lower.

How to lock the settings of the IFM KG5025 sensor to prevent accidental changes?

Press the push-button for 10 seconds. The yellow and green LEDs flash then turn off, indicating the sensor is locked. To unlock, repeat the same operation.

What to do if the threshold setting fails on the KG5025?

If the red LED flashes after step 4, it means the interval between the 'damped' and 'undamped' signals is too short. Press the setting button once to switch to operating mode without modifying the threshold.

How to electrically connect the IFM KG5025 sensor?

Disconnect the installation from power. Connect the wires according to colors: BN (brown) for positive supply, BU (blue) for negative, BK (black) for switching output. Strictly follow the label indications.

What are the minimum distances to maintain between multiple KG5025 sensors?

When several sensors of the same version are mounted, the minimum distance between them must be 3 x Sn (i.e., 24 mm) to avoid interference.

How to clean the IFM KG5025 sensor?

Ensure that the active face and the clearance zone are free from deposits and foreign bodies, especially if the sensor is mounted face upwards. Use a soft, dry cloth if necessary.

USER MANUAL KG5025 IFM

Capacitive proximity switch KG/P

Technical line drawing of a mechanical component with no visible text or symbols

Pure diagram of a mechanical component with an arrow pointing to it, no text or symbols present.

Betrieb

Function and features

This proximity switch detects metals, almost all plastics, glass, ceramics, wood, paper, oils, greases, water and all hydrous materials without contact and indicates their presence by providing a switched signal.

• Nominal sensing range (Sn) 8 mm (measured on an earthed metal plate and water; a shorter sensing range for other materials).
  • Automatic adjustment to the medium to be detected.

Installation

Mount theunit by means of a mounting device. Secure it by means of the nuts provided so that it cannot work loose. Non-flush installation.

LED's red, yellow, green setting button

Open space around the sensing face:

3 x Sₙ

D D D 2 x Sn

Minimum distance when several switches of the same type are mounted:

3x Sₙ

D D D

Electrical connection

Disconnect power before connecting the proximity switch. Connection strictly to the indications on the type label.

Core colours: BN = brown, BU = blue, BK = black.

Adjustment

The unit detects the "damped" state (= medium present) and the "undamped" state (= no medium present) and sets the optimum switch point.

1

Press for 5s.

Yellow and green LEDs flash alternately (= unit is in the programming mode).

2

Place the medium into the detection area of the sensor and press the button briefly.

The yellow and green LED's go out for a short time, then quickly flash alternately;the red LED is on.

3

Remove the medium and increase the distance between the medium and the unit until the red LED goes out.

The yellow and green LED's continue to flash alternately.The red LED goes out.

If the red LED does not go out, the interval between the "damped" and the "undamped" signals is too short. Press the setting button twice. The unit passes into the operating mode with the switch point being unchanged..

4

Press briefly.

The yellow and green LED’s go out for a short time, then the green LED is on (= unit is in the operating mode).

Steps 2 and 3 can also be taken in reverse order: first align the unit without the medium being present and then place the medium into the detection area until the red LED goes out.

If the setting of the switch point is not possible (the signals for damped/undamped follow too close), the red LED flashes after step 4 (= adjustment error). Press the setting button once. The unit then passes into the operating mode with the switching point being unchanged.

Locking / Unlocking

The unit can be electronically locked to prevent unwanted adjustment of the set parameters:

Press for 10s.

The yellow and green LED’s flash alternately;after 10s the LEDs go out, the unit is locked.

Pure diagram of a mechanical component with an arrow pointing to it, no text or symbols present.

Operation

Check the safe functioning of the switch.

The operation of the proximity switch is maintenance-free. For perfect functioning make sure that:

- the sensing face and the open space are kept free of deposits and foreign bodies, particularly for installation with the sensing face facing upwards.

LED display:

LED green lights unit is ready for operation.
LED yellow lights output is switched.
LED red lights uncertain working range.
LED red flashes internal malfunction, adjustment error.
LED's yellow + red	simultaneous flashing: output is short-circuited.