IFM KT5100 Series Capacitive Proximity Sensor Switch

Sensor Switch, Capacitive Proximity Sensor Switch, Proximity Sensor SwitchIFM

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2025/7/4 Update

Touch Sensor – Finger-actuated Button
— DC | Pre-wired or quick disconnect, mechanical start/stop buttons are prone to wear and tear. ifm’s cylindrical touch proximity switches, however, do not wear out during operation because they respond to a light touch, resulting in a longer service life.

IFM KT5100 Series Capacitive Proximity Sensor Switch

Technical Features

A reliable alternative to mechanical or photoelectric touch switches, using dynamic and static sensing principles.

Operated by the light touch of a single finger.

The housing is resistant to impact and wear, with a protection rating up to IP69K.

The dynamic sensing principle can ignore material build-up on the sensing face.

The M22 x 1.5 thread is suitable for direct installation in many areas.

Products + Accessories Selection:

Product Variations

Operating Principle	Output Function	Connection	Order No.
Dynamic	PNP, N.O.	2 m PUR cable	KT5111
Dynamic	PNP, N.O.	0.3 m PUR, with M12 pigtail	KT5102
Static	PNP, N.O.	2 m PUR cable	KT5110
Static	PNP, N.O.	0.3 m PUR, with M12 pigtail	KT5106
Latching	PNP, N.O.	2 m PUR cable	KT5150*
Latching	PNP, N.O.	0.3 m PUR, with M12 pigtail	KT5151*

*With red LED controllable via pin 2.

Required Accessories (order in pairs)

Description	Order No.
Cover text: Start	E12377
Cover text: Stop	E12378
Cover symbol: On	E12379
Cover symbol: Off	E12380
Transparent cover	E12386

Connecting Cables

Description	Order No.
M12 Micro DC (4-pin) 2 m, PUR	EVC001
M12 Micro DC (4-pin) 5 m, PUR	EVC002
M12 Micro DC (4-pin) 2 m, PUR	EVC004
M12 Micro DC (4-pin) 5 m, PUR	EVC005

Specifications:

Operating voltage:
- Models KT5102 and KT5106: 12…30 V DC
- Models KT5110, KT5111, KT5150 and KT5151: 24 V DC ± 20%
Current consumption: 30 mA
Rated current: 500 mA
Operating temperature: -40…85 °C
Housing material: PA (Polyamide)
Protection class: IP65, IP67, IP69K (front face)

Benefits Introduce In Detail

Cylindrical Capacitive Touch Sensor for Starting/Stopping Machines with a Light Touch

New! The KT series multi-color touch sensors are suitable for processes such as starting and stopping machines and for assembly lines. Compared to mechanical pushbuttons, the KT series sensors have many advantages. They use the capacitive sensing principle, are electronic sensors, and have no moving parts that could wear out. The entire device features a fully sealed design with a protection rating up to IP69K, which makes it oil-proof and allows it to ignore the effects of material build-up on the sensing face. The space occupied by a KT series sensor is roughly half that of a mechanical pushbutton, which can free up valuable space on the back of a control panel.

One Sensor for All Applications via IO-Link

The KT series can be easily adapted to the needs of any application. By using IO-Link, the normally open/normally closed functions and colors for different operating states can be set within minutes. Additionally, the following output modes can be selected:

Dynamic output: Provides a 300ms output signal upon touch. This principle allows the sensor to ignore the effects of material build-up on the sensing face and suppresses interference from water, ice, and particles that may adhere to the sensor surface. The sensor will trigger even when the operator is wearing gloves.
Static output: Remains on as long as the sensing face is being touched.
Bistable output: Changes its state upon being touched and maintains that state until it is touched again (a toggle function).

Adjusting Sensitivity According to the Environment

With the help of IO-Link, the brightness of the KT can be adjusted to adapt to room lighting, and the sensitivity can be adjusted for use in humid environments or when operating with gloves. The sensor’s start-up delay can prevent accidental switching operations. Even when used without IO-Link, the sensor still retains all of its settings. The sensor can also count switching cycles, which facilitates machine maintenance according to set schedules.

Lightly touch surfaces of different materials and adjust according to the application. Installation is very simple. Everything is easy!