Sentrol Guardswitch Level 1 Non-Contact Safety Interlock Position Switch 109-6N

Sentrol Guardswitch Level 1 Non-Contact Safety Interlock Position Switch 109-6N

The Sentrol Guardswitch 109-6N is a non-contact safety interlock position switch designed to enhance machine safety by monitoring the position of guards, doors, or gates without physical contact. This switch utilizes magnetic sensing technology, ensuring reliable operation even in environments where dirt, grease, or other contaminants are present.

Key Features

• Non-Contact Operation: Utilizes magnetic sensing to detect the position of machine guards without physical contact, reducing wear and tear.
• Normally Open Configuration: The 109-6N model features a normally open (N.O.) contact configuration, suitable for various safety applications.
• Electrical Ratings: Supports a load rating of 25VA/25W, with a maximum switching voltage of 120V AC/DC and a maximum switching current of 0.7A at 35V or 1.0A at 25V.
• Durable Construction: Housed in gray ABS plastic, the switch is designed to withstand temperatures ranging from -40°F to 180°F (-40°C to 80°C).
• Environmental Protection: Hermetically sealed contacts and polyurethane sealing provide protection against environmental factors, with an IP62 rating.
• Easy Installation: Equipped with #6 screw terminals for straightforward wiring and installation.

Installation Guidelines

To ensure optimal performance and safety:

• Mounting: Secure the switch and actuator using non-removable screws, bolts, or nuts. Avoid over-torquing the mounting hardware.
• Alignment: Align the actuator with the switch, ensuring that labels face the same direction. Maintain the specified sense range for proper operation.
• Proximity to Ferrous Materials: Be aware that mounting on ferrous materials (e.g., steel) can reduce the sense range by up to 50%. Using a 1/4″ non-ferrous spacer (plastic or aluminum) under the switch and actuator can help restore the sense range.
• Hinge Placement: When installing on hinged doors or gates, position the switch and actuator at least 6 inches away from the hinges to maximize movement detection.

Electrical Considerations

To prevent switch failure and ensure longevity:

• Surge Protection: Implement transient protection devices, such as back-to-back zener diodes (Transorb) or RC networks, to protect against voltage spikes from coils, motors, contactors, solenoids, and tungsten filaments.
• Capacitance Management: Address line and load capacitance by adding an in-line resistor in series immediately before the load to limit inrush current. Calculate the voltage drop and power rating of the resistor based on the maximum continuous current of the load.

Verification

To verify the operation of the Sentrol Guardswitch 109-6N:

• Set an ohmmeter to the 20 mega ohms range.
• For a normally open switch, the meter should read high impedance when the actuator is away and very high to infinity when the actuator is within the sense range.

By adhering to these guidelines, the Sentrol Guardswitch 109-6N provides a reliable and durable solution for non-contact safety interlock applications in various industrial settings.