Pepperl+Fuchs VAS-2A8L-KE4-8SE AS-Interface Safety Monitor

USD 1,068.72

Compact SIL 3/PLe safety controller for AS-Interface, featuring 4 safe inputs and 2 safe OSSD outputs for critical industrial applications. IP20 rated.

SKU PEPPERL-FUCHS-VAS-2A8L-KE4-8SE Category
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Pepperl+Fuchs VAS-2A8L-KE4-8SE AS-Interface Safety Monitor

Model Identifier VAS-2A8L-KE4-8SE
Official Part Number VAS-2A8L-KE4-8SE
GTIN Standard NA

Technical Overview

Compact SIL 3/PLe safety controller for AS-Interface, featuring 4 safe inputs and 2 safe OSSD outputs for critical industrial applications. IP20 rated.

Key Features

  • AS-Interface specification V3.0 compatible.
  • Achieves Safety Integrity Level (SIL) 3.
  • Meets Performance Level (PL) e.
  • Equipped with 4 integrated, safe inputs (Cat. 4).
  • Includes 2 integrated, safe outputs (OSSDs).
  • Features 8 logical, safe output groups (switchable).
  • Increased functionality through an integrated expansion port.
  • Supports parameterizable muting, timer, and logic functions using SIMON+ software.
  • Micro USB interface for programming and configuration.
  • Chip card slot for transferring configurations to replacement devices.
  • Designed for DIN rail mounting (35 mm, EN 50022 compliant).
  • Degree of protection IP20, suitable for control cabinet installation.

Compact safety controller up to SIL 3/PLe for comprehensive machine safety integration.

Technical Specification Matrix

ParameterValue
AS-Interface SpecificationV3.0
Safety Integrity Level (SIL)SIL 3
Performance Level (PL)PL e
Auxiliary Voltage (UEXT Input)20 ... 30 VDC PELV
Rated Operating Voltage (from AS-Interface)18.0 ... 31.6 V
Number of Safe Inputs4 (Category 4)
Number of Safe Outputs2 (OSSDs)
Number of Logical Safe Output Groups8
Degree of ProtectionIP20
Mounting TypeDIN rail (35 mm, EN 50022)
Ambient Temperature0 ... 55 °C (32 ... 131 °F)
Interface 1Chip card slot
Interface 2Micro USB (programming)
Physical Weight (kg)0.24
Dimensions L x W x H (cm)11.3 x 2.25 x 9.9

Industrial Applications

1. Machine Safety System for Production Lines

Implementing comprehensive safety interlocking and emergency stop functionality on automated production lines, integrating various safety devices like light curtains, E-stops, and safety gates into a centralized safety monitoring system.

Problem Solved

This monitor, with its SIL 3/PLe rating and AS-Interface connectivity, simplifies wiring for multiple safety devices over a single bus, reducing installation time and costs while meeting stringent safety standards for complex machinery. Its integrated safe inputs and outputs allow direct connection of safety components.

AS-InterfaceSIL 3PLeEmergency StopSafety GateLight CurtainInterlockingProduction LineIndustrial AutomationControl CabinetIP20

2. Robotics Workcell Safety

Ensuring safe operation of robotic workcells by monitoring access points, robot movement, and human presence, implementing safe stop functions when safety limits are breached.

Problem Solved

Robotic cells demand rapid and reliable safety responses. This safety monitor provides the necessary SIL 3/PLe rating to control safety outputs (OSSDs) for robot safe stop functions and can integrate various safety sensors (e.g., area scanners, safety mats) through its safe inputs. The configurable logic handles complex safety scenarios, providing robust protection within an IP20 rated control cabinet.

RoboticsWorkcellSafe StopSIL 3PLeOSSDSafety ScannerSafety MatAccess ControlProgrammable LogicIP20

3. Conveyor System Emergency Shutdown

Designing an emergency shutdown system for long conveyor belts in material handling facilities, incorporating numerous pull-cord switches and E-stop buttons along the length of the conveyor.

Problem Solved

Large conveyor systems require distributed safety devices. AS-Interface allows easy daisy-chaining of many safety E-stops and pull-cord switches. This safety monitor acts as the central brain, collecting safety signals from decentralized AS-i modules and initiating a safe shutdown (SIL 3/PLe) of the conveyor motor drives via its safe outputs. Its compact size and IP20 rating make it suitable for control cabinet integration in such environments.

Conveyor SystemEmergency StopPull-Cord SwitchMaterial HandlingAS-InterfaceDistributed SafetySIL 3PLeSafe OutputsControl CabinetIP20
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