The Wieland Electric SNV 4063KL is a safety relay designed to monitor emergency stop functions and safety gate applications, ensuring the protection of personnel and machinery. This base unit supports both single-channel and two-channel control circuits, featuring cross-monitoring and simultaneity checks to detect faults such as short circuits or ground faults. The device is suitable for applications up to safety category 4 according to EN 954-1 and complies with stop categories 0 and 1 as per EN 60204-1. It offers two immediate switching enabling current paths and one OFF-delayed enabling current path, with adjustable OFF-delay times ranging from 0.15 to 3 seconds or 1.5 to 30 seconds, depending on the model.

Key Features:

• Versatile Monitoring: Capable of overseeing emergency stop functions and safety gate operations with single or dual-channel control.

• Adjustable OFF-Delay: Provides selectable OFF-delay times to accommodate various safety requirements.

• Cross-Monitoring: Detects wiring errors such as short circuits or ground faults, enhancing system safety.

• Reset Functionality: Supports both manual and automatic reset modes, with reset button monitoring to prevent unintended restarts.

• Compact Design: DIN rail mountable with pluggable screw terminals for straightforward installation and maintenance.

Technical Specifications:

• Supply Voltage: 24 V DC (operating range: 20.4 V to 26.4 V)

• Power Consumption: Approximately 2.6 W

• Control Inputs: Rated for 24 V DC with peak currents up to 100 mA

• Response Time: Approximately 30 ms with reset button monitoring; 700 ms without

• Release Time: Immediate contacts: ~25 ms; OFF-delayed contacts: adjustable between 0.15 to 3 s or 1.5 to 30 s

• Safety Outputs: Two immediate NO contacts and one OFF-delayed NO contact, each rated for 6 A at 230 V AC/DC

• Operating Temperature: -25°C to +55°C

• Dimensions: 22.5 mm (W) x 114 mm (H) x 107.6 mm (D)

• Mounting: 35 mm DIN rail (EN 60715)

• Protection Degree: IP40 (housing), IP20 (terminals)

Wieland Electric - SNV 4063KL - Safety Relay for Emergency Stop and Safety Gate