WE 77/EX-1 115V

Pepperl + Fuchs WE 77/EX-1 115V available at EU Automation. Get in touch today for a quick price.

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The Pepperl + Fuchs WE 77/EX-1 115V is a high-quality switch amplifier designed for use in control and instrumentation technology. This device is essential for the galvanic isolation of signals, such as 20 mA and 10 V standard signals, and is also capable of adapting or standardising signals. It is particularly suited for operating intrinsically safe field devices in hazardous areas, ensuring safe and reliable signal transfer from NAMUR sensors or dry contacts from hazardous to non-hazardous areas. The WE 77/EX-1 115V is designed for stationary use and is mounted on a 35 mm DIN rail according to EN 60715 standards. It features intrinsically safe circuits, making it an associated apparatus as per IEC/EN 60079-11. With a robust design that meets IP20 protection standards, this switch amplifier is ideal for environments requiring pollution degree 2 or better. The device is not suitable for isolating signals in power installations unless specified otherwise. It is crucial to install and operate the device outside of hazardous areas, following the installation instructions according to IEC/EN 60079-14.
Specification Description
Part Number WE 77/EX-1 115V
Manufacturer Pepperl + Fuchs
Category Switch Amplifier
Supply Voltage 115V AC
ATEX Certificate PTB 02 ATEX 2065
ATEX Marking II (1)GD [EEx ia] IIC [circuit(s) in zone 0/1/2]
Intended Use The device is used in control and instrumentation technology for the galvanic isolation of signals such as 20 mA and 10 V standard signals or alternatively for adapting or standardizing signals. It transfers digital signals from NAMUR sensors or dry contacts from the hazardous area to the non-hazardous area.
Mounting Designed for mounting on a 35 mm DIN rail according to EN 60715.
Protection Degree IP20 according to IEC/EN 60529
Environment Must be installed and operated in a controlled environment ensuring a pollution degree 2 (or better) according to IEC/EN 60664-1.
Associated Apparatus The device is an associated apparatus according to IEC/EN 60079-11, suitable for operating intrinsically safe field devices in hazardous areas.

What is the primary function of this switch amplifier?

The switch amplifier is used in control and instrumentation technology for the galvanic isolation of signals such as 20 mA and 10 V standard signals. It can also adapt or standardize signals.

Is this device suitable for use in hazardous areas?

Yes, the device has intrinsically safe circuits designed for operating intrinsically safe field devices in hazardous areas.

What type of signals can this device transfer?

The device transfers digital signals from NAMUR sensors or dry contacts from the hazardous area to the non-hazardous area.

How should the device be mounted?

The device is designed for mounting on a 35 mm DIN mounting rail according to EN 60715.

What are the installation requirements for this device?

The device must be installed outside of the hazardous area and in a controlled environment that ensures a pollution degree 2 or better according to IEC/EN 60664-1.

What is the ATEX marking for this device?

The ATEX marking for this device is II (1)GD [EEx ia] IIC [circuit(s) in zone 0/1/2].

Can this device be used for isolating signals in power installations?

No, the device is not suitable for isolating signals in power installations unless noted separately in the corresponding datasheet.

What should be done if the device is damaged?

If the device is damaged, it should not be used. It should be replaced with an original device.

What is the degree of protection provided by this device?

The device fulfills a degree of protection IP20 according to IEC/EN 60529.

What should be considered when disposing of the device?

Disposal of the device, packaging, and any contained batteries must comply with the applicable laws and guidelines of the respective country.

  • Galvanic isolation of signals in control and instrumentation technology.
  • Adapting or standardizing 20 mA and 10 V standard signals.
  • Operating intrinsically safe field devices in hazardous areas.
  • Transferring digital signals from NAMUR sensors or dry contacts from hazardous to non-hazardous areas.
  • Use in environments requiring ATEX certification for safety.
  • Mounting on a 35 mm DIN rail for secure installation.
  • Integration into systems requiring intrinsically safe circuits according to IEC/EN 60079-11.

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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