EUCHNER TZ1RE024RC18VABH-C1826 Safety Switch

EUCHNER TZ1RE024RC18VABH-C1826 Safety Switch Overview

The EUCHNER TZ1RE024RC18VABH-C1826 is a robust and highly reliable safety switch with integrated guard locking and guard lock monitoring. Designed for machine guarding applications, it ensures that hazardous movements are prevented until a machine guard (like a door, gate, or cover) is securely closed and locked. It is part of EUCHNER's TZ series, known for its strong locking forces and flexible contact configurations, making it suitable for a wide range of industrial environments and safety requirements.

Product Detailed Description

• Functionality:

• Guard Locking: This primary function keeps the machine guard locked while a dangerous condition exists (e.g., machine running, coasting down). The locking mechanism is activated by an integrated solenoid.

• Guard Lock Monitoring: The switch monitors the position of the guard and the state of the guard lock itself. It provides feedback to the control system (PLC/safety relay) indicating whether the guard is closed and whether it is securely locked.

• Door Position Monitoring: In addition to guard locking, it monitors the actual closed position of the door/guard, typically using positively driven contacts for enhanced safety.

• Closed-Circuit Current Principle (Power to Unlock): The guard locking function operates on the closed-circuit current principle. This means the solenoid needs power to keep the guard locked. If power to the solenoid is lost (e.g., power failure), the guard unlocks automatically, which can be desirable in applications where personnel egress or rapid access during power loss is required (e.g., in a safe state).

• Auxiliary Release (from front): Features an auxiliary release mechanism (usually a small lever or button) on the front of the switch, allowing manual unlocking of the guard in case of power failure or for maintenance purposes, when the hazardous situation is confirmed to be clear.

• Safety Category Compliance: Designed to meet high safety performance levels when correctly integrated into a safety circuit, typically up to PLe / Safety Category 4 according to EN ISO 13849-1.

• Features:

• 2 Door Position Positively Driven Contacts (NC)

• 1 Door Position NO Contact

• 2 Guard Lock Monitoring Positively Driven Contacts (NC)

• 2 Guard Lock Monitoring NO Contacts

• Robust Housing: Made of anodized die-cast alloy, making it highly durable and suitable for harsh industrial environments.

• Actuating Head: The "RE" in the model likely indicates a rotary actuating head (adjustable in 90° steps), allowing for flexible mounting and approach directions (horizontal).

• Contact Configuration: The "VABH" part of the model indicates a specific contact block configuration. From the search results, this specific model has:

• Electrical Connection: Uses an RC18 plug connector (18-pin + PE), usually an M23 type, for easy and reliable electrical connection. The "-C1826" likely refers to a specific wiring or connector configuration.

• LED Indicators: Often includes LEDs for status indication (e.g., guard locked, guard unlocked, power on).

• High Locking Force: Designed with a high maximum locking force (Fmax 2000 N, FZh 1500 N) to prevent accidental opening of guards.

• Slow-action Switching Contacts: Ensures reliable breaking of the circuit upon actuation.

Product Parameters

• Solenoid Operating Voltage: 24 V AC/DC (-15% ... +10% tolerance).

• Solenoid Duty Cycle: 100% (can remain energized continuously).

• Rated Insulation Voltage (Ui): 50 V.

• Rated Impulse Voltage (Uimp): 1.5 kV.

• Thermal Rated Current (Ith): 4 A (>70 °C => 2 A).

• Utilization Category:

• DC-13: 4 A 24 V (>70 °C => 2 A).

• AC-15: 4 A 50 V (>70 °C => 2 A).

• Minimum Switching Voltage (at 10 mA): 12 V.

• Minimum Switching Current (at 24 V): 1 mA.

• Power Consumption: 10 W.

• Fuse: max. 4 A gG (>70 °C => 2 A gG).

• Number of Door Position Positively Driven Contacts: 2 (NC).

• Number of Door Position NO Contacts: 1.

• Number of Guard Lock Monitoring Positively Driven Contacts: 2 (NC).

• Number of Guard Lock Monitoring NO Contacts: 2.

• Actuation Principle: Slow-action switching contact.

• Locking Force Fmax (max): 2000 N.

• Locking Force FZh (retained): 1500 N.

• Extraction Force: 30 N.

• Actuating Force: 35 N.

• Mechanical Life: 1 x 10⁶ operating cycles.

• Approach Speed: max. 20 m/min.

• Actuation Frequency: max. 1200 1/h.

• Housing Material: Anodized die-cast alloy.

• Contact Material: Silver alloy, gold flashed.

• Lid Color: Black.

• Installation Orientation: Any.

• Insertion Depth: 52 mm.

• Degree of Protection: IP65.

• Ambient Temperature: -25 °C to +80 °C.

• Connection Type: RC18 (M23) plug connector, 18-pin + PE.

Product Advantages

• High Level of Safety: Meets stringent safety standards (e.g., PLe / Cat 4 when correctly implemented) through positively driven contacts and robust guard locking.

• Strong Guard Locking: The high locking force prevents unintended opening of safety gates, even under high forces or vibrations.

• Reliable Monitoring: Dual monitoring of both guard position and lock status provides comprehensive feedback for safe machine operation.

• Versatile Application: The adjustable rotary actuating head and flexible contact configuration make it adaptable to various machine designs and guard types.

• Robust Construction: The die-cast alloy housing and IP65 rating ensure durability and long life in demanding industrial environments.

• Convenient Wiring: The RC18 plug connector simplifies installation and maintenance, reducing wiring time and potential errors.

• Auxiliary Release: Provides manual unlocking capability for maintenance or emergencies, enhancing operational flexibility while maintaining safety.

• Long Mechanical Life: Designed for a high number of operating cycles, contributing to reliability and reduced replacement frequency.

Precautions

• Safety Integration: This safety switch must be integrated into a complete safety system (e.g., with a safety relay or safety PLC) according to relevant safety standards (e.g., EN ISO 13849-1, IEC 62061) to achieve the stated performance level.

• Correct Actuator: Only use the specific EUCHNER actuator designed for the TZ series with this switch. Using an incorrect or modified actuator will compromise safety.

• Proper Installation: Install the switch and actuator strictly according to EUCHNER's instructions to ensure proper alignment and reliable actuation. Ensure the mounting is rigid and prevents tampering.

• Environmental Conditions: Operate within the specified ambient temperature range and ensure the IP65 rating is maintained (e.g., by using appropriate cable glands or matching connectors). Avoid exposure to corrosive substances beyond its rating.

• Electrical Wiring: Connect the solenoid and safety contacts precisely according to the wiring diagram provided by EUCHNER. Ensure correct voltage supply to the solenoid.

• Testing and Validation: After installation and during routine maintenance, perform functional tests to verify the safety function of the switch and the entire safety circuit.

• Tamper Protection: Implement measures to prevent unauthorized bypassing or manipulation of the safety switch.

• Maintenance: Regularly inspect the switch for mechanical wear, damage, or contamination. Clean the actuating head area as needed.

Product Applications

The EUCHNER TZ1RE024RC18VABH-C1826 safety switch is primarily used in industrial machinery and plant engineering where safe guard locking and position monitoring are critical.

• Machine Guarding: Securing access doors, gates, and covers on machinery such as:

• CNC machines

• Robotic cells

• Packaging machinery

• Processing lines

• Assembly lines

• Metalworking machines

• Woodworking machines

• Automated Production Lines: Ensuring that operators cannot access hazardous areas while machinery is in operation.

• Conveyor Systems: Safety interlocks on access points to conveyor belts.

• Material Handling Equipment: Securing access to moving parts in automated storage and retrieval systems.

• Food and Beverage Industry: Can be used in suitable variants for hygienic areas (check specific sub-variants for material and cleaning compatibility).

• Any application requiring a physically robust safety interlock with guard locking and comprehensive monitoring.

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