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SRS50-HFA0-K22

The SRS50-HFA0-K22 is a robust and precise incremental rotary encoder from SICK, designed for accurate speed and position feedback in industrial automation applications. Its 50 mm housing and solid shaft construction provide mechanical reliability and ease of integration in compact installation spaces.

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General Specifications
Parameter Specification
Product Type Coded Magnetic Safety Switch
Model SRS50-HFA0-K22
Actuation Principle Non-contact, coded magnetic
Safety Ratings SIL 3 (IEC 61508), PL e (ISO 13849-1), Cat. 4
Supply Voltage 24 VDC (10...30 VDC range)
Output Type 2 OSSD (Output Signal Switching Device) safety outputs
Contact Configuration Normally closed (NC) via safety outputs
Operating Force 0 N (Non-contact actuation)
Protection Rating IP67 (Dust and waterproof)
Housing Material Plastic (PA) with metal actuator
Operating Temperature -30°C to +75°C (-22°F to +167°F)
Mechanical Life > 1 million operations
Electrical Characteristics
Max. Current Consumption: 50 mA

Output Current: 0.5 A per OSSD

Response Time: ≤ 20 ms

Connection: M12 plug connector (5-pin)

Mechanical Characteristics
Actuator Type: Coded magnetic key (e.g., AK52 actuator)

Switching Distance: Up to 50 mm (aligned)

Mounting: Built-in flush mounting (prevents accidental actuation)

Alignment Tolerance: ±5 mm (axial and lateral)

Key Features
Tamper Resistance: Unique magnetic coding prevents bypassing with standard magnets.

Non-Contact Operation: No mechanical wear, ensuring long service life.

High Safety Integrity: Meets the highest safety standards (SIL 3, PL e).

LED Status Indicators: Visual feedback for power, diagnostics, and switching state.

Flexible Mounting: Suitable for horizontal or vertical installation.

Applications
Guard door monitoring on presses, robots, and automated machinery

Safety interlocking for access gates and enclosures

Packaging, automotive, and material handling equipment

Applications requiring Category 4 / PL e safety performance