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Specification & Description
| Specification | Description |
|---|---|
| Part Number | VAA-4E4A-KE-ZE/R |
| Manufacturer | Pepperl + Fuchs |
| Type | AS-Interface Sensor/Actuator Module |
| Operating Voltage | ≤8 mA, 21 to 31 V dc |
| Mounting Type | DIN Rail Mount |
| Dimensions | 106 x 102 x 22.5 mm |
| Fieldbus Standard | EN 62026-2:2013 |
| Ambient Temperature Range | -25 to 60 °C |
| Storage Temperature Range | -25 to 85 °C |
| Relative Humidity | 85%, non-condensing |
| Altitude | ≤ 2000 m above MSL |
| Pollution Degree | 2 |
| Degree of Protection | IP20 |
| Connection Type | Removable terminals |
| Housing Material | PA 66-FR |
| Weight | 170 g |
| Tightening Torque | 0.5 Nm to 0.6 Nm |
| Input Characteristics | 4 inputs for 2- or 3-wire sensors (PNP), DC, supply from AS-Interface or external, ≤ 8 mA |
| Output Characteristics | 4 relay outputs, normally open, nominal load per contact 2 A / 30 V DC, per module 8 A |
| Surge Protection | Over voltage category II for outputs, category III for auxiliary and operating voltages (PELV) |
| LED Indicators | FAULT, INT, PWR, IN, OUT |
| Galvanic Isolation | Input/Output, Input/AS-Interface, Output/Output, Output/AS-Interface |
| Directive Conformity | Electromagnetic compatibility Directive 2014/30/EU, Low voltage Directive 73/23/EEC |
| Standard Conformity | Galvanic isolation EN 60664-1:2007, Electromagnetic compatibility NAMUR NE 21: 1998-08 |
The Pepperl + Fuchs VAA-4E4A-KE-ZE/R is a sophisticated AS-Interface sensor/actuator module designed for seamless integration into industrial automation systems. This compact unit, with dimensions of 106 x 102 x 22.5 mm, is engineered to mount easily onto a DIN rail, making it an ideal choice for space-constrained switch cabinets.
Equipped with four PNP inputs and four relay outputs, the module facilitates efficient monitoring and control of various field devices. The inputs cater to both 2- and 3-wire sensors, providing flexibility in connecting different types of sensors to the module. Users can select between internal power supply from the AS-Interface or an external source, depending on their specific requirements, with the selection indicated by a dedicated LED.
The module's outputs are isolated relay contacts, ensuring reliable operation and safety within the system. Each input and output state is conveniently displayed via individual LED indicators, simplifying troubleshooting and system checks.
With an ambient operating temperature range of -25 to 60°C, the VAA-4E4A-KE-ZE/R is built to withstand challenging industrial environments. The module's robust construction is complemented by a protection rating of IP20, signifying its suitability for indoor applications.
For system integrators and maintenance personnel, the module's communication monitoring feature is a significant advantage. It ensures that in the event of a communication failure, the outputs are de-energised, thereby maintaining system integrity and preventing unintended operations.
The VAA-4E4A-KE-ZE/R is compliant with the AS-Interface specification V2.1 and requires a gateway specification of V2.0 or higher. Its adherence to international standards, including EN 62026-2:2013 for fieldbus systems, underscores its reliability and quality.
Overall, the Pepperl + Fuchs VAA-4E4A-KE-ZE/R module is a versatile and reliable component that enhances the functionality and efficiency of automated systems in various industrial settings.
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Frequently Asked Questions
What type of module is this?
This is an AS-Interface Sensor/Actuator Module designed for use in switch cabinets, providing a compact solution for interfacing sensors and actuators to the AS-Interface network.
Can this module be used with both 2-wire and 3-wire sensors?
Yes, the module accommodates both 2-wire and 3-wire sensors (PNP), offering flexibility in connecting various types of sensors.
What is the supply voltage range for this module?
The module operates within a supply voltage range of 21 to 31 V dc, ensuring compatibility with standard AS-Interface power supplies.
How can the sensors be powered using this module?
Sensors connected to the module can be powered either from the internal supply of the module (AS-Interface) or via an external voltage source, selectable via a switch on the module.
What type of outputs does the module have?
The module features 4 isolated relay outputs, which are normally open, providing reliable switching for connected devices.
How are the input and output states indicated?
The current switching state of each input and output is indicated by respective yellow LEDs for inputs (IN) and outputs (OUT), enhancing visibility and diagnostics.
What is the function of the FAULT LED on the module?
The FAULT LED indicates a communication fault or an address of 0. It also flashes red to signal an overload or an issue with the internal input supply.
Is there any protection against communication loss with the AS-Interface?
Yes, the module is equipped with communication monitoring which de-energises the outputs if there is no AS-Interface communication with the module for more than 40 ms.
What is the maximum altitude at which the module can operate?
The module is designed to operate at altitudes up to 2000 metres above mean sea level, accommodating various installation environments.
What are the environmental conditions suitable for the module?
The module is suitable for indoor use only, with an ambient temperature range of -25 to 60 °C and a relative humidity of up to 85%, non-condensing.
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