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Knowledge Base for Inductive Sensors

Connection Methods


Inductive sensors can be integrated into systems in various ways. The various versions of sensors with fixed cables with or without plugs or with connector plugs are available as standard in various designs.


Terminal Compartment

Sensors of this type have a designated area in the sensor housing for electrically interconnecting the sensor to the plant. The terminal compartment allows users to freely select the connection cable. This is of particular benefit in applications involving UV resistance or resistance to chemical agents. In addition, users are not tied to fixed cable lengths, and the terminal compartment offers increased tamper protection compared to versions with connectors.

Pepperl+Fuchs inductive sensors with terminal compartments may contain the type designation "KK" in the second position of the type code.

Fixed Cable with or without Connector

Sensors of this type have a fixed cable that can be preassembled or a fixed cable with a typical connector for industrial automation. Sensors with fixed cable are affordable options, since they do not require an additional single-ended female cordset and keep the number of connection points to a minimum. Connection to special connectors is possible depending on the application requirement (e.g., automotive industry).

Sensors with fixed cables and a connector have information on the cable length and the type of connector included at the end of their type code, e.g.: NBB0,8-4M25-E2-0,3M-V3, NMB1,5-8GM35-E2-FE-150MM-V1, etc.

Connectors for Data Transfer

Inductive sensors are available with a standard selection of industrial automation connectors, including M8 and M12, 1/2 inch and 7/8 inch. When replacing the sensor, the cabling does not need to be replaced completely. This prevents error-prone new connections in the terminal compartment. Standardized single-ended female cordsets are available in the Pepperl+Fuchs accessories range.

Inductive sensors with these connection options have one of the following type designations at the end of the type code: V1, V3, V5, V13, V16, V18.

Other Connections

In addition to other versions, e.g., FASTON® connectors or sensors with solder connections are available.

Electrical Versions and Basic Circuit Diagrams

The following table provides an overview of common inductive sensors with regard to the electrical version, sensor type, typical data, and the basic circuit diagram.


Direct-Current Voltage 10 V ... 60 V
Sensor type
  • ​2-wire
  • Z/E0, Z1, Z2, Z3, Z4, Z5
  • Standard type
  • Reverse polarity protection
  • Short-circuit proof
Wiring diagram according to EN 60947-5-2

NO contact or NC contact

​Example: NO contact Z/Z0
Typical data
  • Basic series 5 V/4 mA … 100 mA
  • Standard series 4 V/2 mA … 200 mA
  • Residual current 0.7 mA/0.5 mA
Basic Series 10 V ... 30 V, 100 mA
Standard Series 10 V ... 60 V, 200 mA
Sensor type
  • 3-wire
  • E/E0, E1, E2, E3, E5, E8
  • Short-circuit proof
  • Reverse polarity protection
Wiring diagram according to EN 60947-5-2
NO contact or NC contact
Example: NO contact E/E0
Basic circuit diagram
 
Typical data
  • Voltage drop 2.5 V
  • Residual current 0.3 mA
  • Operating current 0 mA ... 200 mA
  • No-load current 20 mA

 

Sensor type
  • 4-wire
  • A, A2
  • Short-circuit proof
  • Reverse polarity protection
Wiring diagram according to EN 60947-5-2
NC contact and NO contact
Example: NC contact and NO contact A2
Typical data
  • Voltage drop 2.5 V
  • Residual current 0.3 mA
  • Operating current 0 mA ... 200 mA
  • No-load current 20 mA
Alternating-Current Voltage 20 V ... 250 V
Sensor type WS, WÖ, W, W4
Wiring diagram according to EN 60947-5-2
NC contact and NO contact
Example: NC contact WÖ/UÖ
Typical data
  • Voltage drop "ON": 6 V
  • Residual current 1 mA
  • Operating current 5 mA ... 500 mA
Universal Current 20 V ... 250 V AC, 45 Hz ... 65 Hz, 30 V ... 300 V DC
Sensor type US, UÖ
Wiring diagram according to EN 60947-5-2

NC contact and NO contact

Example: NC contact WÖ/UÖ
Typical data
  • Voltage drop "ON": 5 V
  • Residual current 1.5 mA
  • Operating current 5 mA ... 500 mA
Direct-Current Voltage 8 V DC
Sensor type
  • NAMUR, N, 1N, SN, S1N
  • EN 60947-5-6
Wiring diagram according to EN 60947-5-2
NC contact or NO contact
Example: NC contact N/N0 or SN
Typical data
  • Rated voltage 8 V
  • Output current
    < 1 mA actuated
    > 3 mA unactuated

Sensor Types: Wire Colors and Plug Assignment According to EN 60947-5-2

Below you find an overview of the pin assignment and wire colors of the inductive sensors.

The pinout numbers correspond to the numbering of the pins on the connector plugs. This does not apply to proximity sensors for AC and those with 3-pin 8 mm plugs.

Switches without protective insulation require a protective conductor terminal for voltages above 50 V AC and 120 V DC.

2 AC Connections
Function NO contact
Connection/wire color ./.
Use any color except yellow/green or yellow.
Ensure both wires have the same color.
Pinout 3 | 4
V1 connector plug
V13 connector plug
V3 connector plug

 

2 DC Connections—Free Polarity
Function NC contact
Connection/wire color + | -
./.
Pinout 1 | 2
V1 connector plug
V13 connector plug

 

2 DC Connections—Observe Polarity
Function NO contact
Connection/wire color + | -
Brown (BN) | Blue (BU)
Pinout 1 | 4
V1 connector plug
V3 connector plug

 

2 DC Connections—Observe Polarity
Function NC contact
Connection/wire color + | -
Brown (BN) | Blue (BU)
Pinout 1 | 2
V1 connector plug

 

3 DC Connections—Observe Polarity
Function NO contact
Connection/wire color + | - | output
Brown (BN) | Blue (BU) | Black (BK)
Pinout 1 | 3 | 4
V1 connector plug

 

Function NC contact
Connection/wire color + | - | output
Brown (BN) | Blue (BU) | Black (BK)
Pinout 1 | 3 | 2
V1 connector plug
V3 connector plug
4 DC Connections—Observe Polarity
Function Change-over contact (open/close)
Connection/wire color + | - | NO contact output | NC contact output
Brown (BN) | Blue (BU) | Black (BK) | White (WH)
Pinout 1 | 3 | 4 | 2
V1 connector plug
2 DC and NAMUR Connections—Observe Polarity
Function NO contact and NC contact
Connection/wire color Channel 1+ | Channel 1- | Channel 2+ | Channel 2- | Valve + | Valve -
Brown (BN) | Blue (BU) | White (WH) | Black (BK) | Red (RD) | Yellow (YE)
Pinout 1 | 3 | 2 | 4 | 5 | 6
V1 connector plug
V16 connector plug
V18 connector plug
3 DC Connections—Observe Polarity
Function NO contact and NC contact
Connection/wire color Power supply + | Power supply - | Output channel 1 | Output channel 2
Brown (BN) | Blue (BU) | Black (BK) | White (WH)
Pinout 1 | 3 | 4
V1 connector plug

K1 = Channel 1
K2 = Channel 2
V18 connector plug

K1 = Channel 1
​K2 = Channel 2

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Inductive sensors sorted by electrical connections

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