SICK 1071845 IQ40-20BPOKK0S PNP NC Inductive Sensor

Technical Overview

The SICK IQ40-20BPOKK0S is a rectangular inductive proximity sensor for flush installation, with a 20 mm nominal sensing range and 16.2 mm assured range. Its PNP normally-closed output provides 150 Hz switching for external control logic, with reference reduction factors for different target metals. The 10–30 V DC device uses a cable-gland terminal connection for conductors up to 2.5 mm². Separate yellow output-state and green operational-status LEDs assist local checks. Its PA66 housing and sensing face provide IP67, IP68 and IP69K protection, with operation from −25 to +85 °C. Short-circuit and power-up pulse protection are provided, and continuous output current is no more than 200 mA.

Flush inductive sensor with 20 mm nominal range, PNP normally-closed output, 150 Hz switching and cable-gland terminal connection.

Key Features

Rectangular inductive sensor for flush installation

20 mm nominal sensing range; 16.2 mm assured sensing range

PNP normally-closed output; DC three-wire wiring

150 Hz switching; continuous output current ≤200 mA

Cable-gland terminal connection; wire size ≤2.5 mm²

10–30 V DC; 12.5 mA no-load current

Short-circuit and power-up pulse protection

Yellow output-state LED and green operational-status LED

PA66 housing and sensing face; IP67 / IP68 / IP69K

−25 to +85 °C operation; −40 to +85 °C storage

Technical Specification Matrix

Parameter	Value
Functional principle	Inductive proximity sensing
Housing design	Rectangular, standard design
Installation	Flush
Nominal sensing range Sn	20 mm
Assured sensing range Sa	16.2 mm
Switching output	PNP normally closed
Electrical wiring	DC three-wire
Switching frequency	150 Hz
Connection	Cable gland; terminal connection
Gland designation	M20 1.5, as specified by manufacturer
Wire size	≤2.5 mm²
Terminal assignment	CD-341: 1=L+; 4=not connected; 3=M; 2=NC output
Power supply	10–30 V DC
Voltage drop	≤2 V
Availability delay	≤50 ms
Hysteresis	3–15% of Sr
Reproducibility	≤2%
Temperature drift	±10% of Sr
Continuous output current	≤200 mA
No-load current	12.5 mA
Circuit protection	Short-circuit protection; power-up pulse protection
Housing material	PA66 plastic
Sensing face material	PA66 plastic
Maximum tightening torque	1.8 Nm
IP rating	IP67 / IP68 / IP69K
Operating temperature	−25 to +85 °C
Storage temperature	−40 to +85 °C
Shock and vibration resistance	30 g, 11 ms; 10–55 Hz, 1 mm
Protection class	II; reference voltage 50 V DC
UL file	E348498
MTTFD	1,125 years
DCavg	0%
Mission time	20 years
Material reduction factors	Reference values, may vary: stainless V2A/304 approximately 0.71; aluminum approximately 0.3; copper approximately 0.25; brass approximately 0.36
Installation diagram clearances	A=0 mm; B=40 mm; C=40 mm; D=60 mm; E=0 mm; F=70 mm; letters refer to manufacturer installation diagram
Indication	Yellow LED=output state; green LED=operational status
Mounting holes	Ø5.5 mm as drawn

Parameter

Value

Functional principle

Inductive proximity sensing

Housing design

Rectangular, standard design

Installation

Flush

Nominal sensing range Sn

20 mm

Assured sensing range Sa

16.2 mm

Switching output

PNP normally closed

Electrical wiring

DC three-wire

Switching frequency

150 Hz

Connection

Cable gland; terminal connection

Gland designation

M20 1.5, as specified by manufacturer

Wire size

≤2.5 mm²

Terminal assignment

CD-341: 1=L+; 4=not connected; 3=M; 2=NC output

Power supply

10–30 V DC

Voltage drop

≤2 V

Availability delay

≤50 ms

Hysteresis

3–15% of Sr

Reproducibility

≤2%

Temperature drift

±10% of Sr

Continuous output current

≤200 mA

No-load current

12.5 mA

Circuit protection

Short-circuit protection; power-up pulse protection

Housing material

PA66 plastic

Sensing face material

PA66 plastic

Maximum tightening torque

1.8 Nm

IP rating

IP67 / IP68 / IP69K

Operating temperature

−25 to +85 °C

Storage temperature

−40 to +85 °C

Shock and vibration resistance

30 g, 11 ms; 10–55 Hz, 1 mm

Protection class

II; reference voltage 50 V DC

UL file

E348498

MTTFD

1,125 years

DCavg

Mission time

20 years

Material reduction factors

Reference values, may vary: stainless V2A/304 approximately 0.71; aluminum approximately 0.3; copper approximately 0.25; brass approximately 0.36

Installation diagram clearances

A=0 mm; B=40 mm; C=40 mm; D=60 mm; E=0 mm; F=70 mm; letters refer to manufacturer installation diagram

Indication

Yellow LED=output state; green LED=operational status

Mounting holes

Ø5.5 mm as drawn

Industrial Applications

1. Checking a metal carrier at a transfer stop

A transfer station can present a metal carrier to the flush sensing face and read the PNP normally-closed output after the carrier stops. The 20 mm nominal range and 16.2 mm assured range provide the reference for establishing the installed gap. Setup uses the actual target-metal reduction factor and the manufacturer installation diagram to position the sensor and surrounding hardware.

Problem Solved

A contactless carrier-position reference helps external transfer logic distinguish the presented target condition, supporting sequencing at the stop without a mechanically actuated sensing element.

Carrier position PNP NC Flush mounting

2. Counting separated metal features through a handling station

A handling station can carry separated metal features past the sensing face and feed output transitions to an external counter. The 150 Hz switching rating supports repeated events when target width, spacing, gap and transit speed create distinct states. Commissioning evaluates the actual metal and surrounding mounting geometry rather than treating nominal sensing range as identical for every target.

Problem Solved

Inductive output transitions give external counting logic feature-passage events, helping track repeated metal targets through the handling station using distinct target and gap conditions.

Feature counting 150 Hz Inductive output

3. Distinguishing device operation from output state during maintenance

During a planned maintenance check, a technician can observe the green operational-status LED and yellow output-state LED while a representative metal target is moved into and out of the sensing position. The separate observations help compare device operation with the PNP normally-closed switching condition. External controller input observation then completes the assessment of the installed terminal-wired channel.

Problem Solved

Separate operational and output indicators give maintenance two local observations for tracing a missing machine input, helping distinguish sensor operating condition from the target-dependent switching state.

Local diagnostics Separate LEDs Terminal wiring