OMEGA Introduces the Stainless Steel Tongue Operated Safety Interlock Switches
The OMEGA® K-SS Series tongue operated safety interlock switches are designed to fit to the leading edge of sliding, hinged or lift off machine guards to provide positively operated switching contacts. The switches provide a tamper resistant, not easily defeatable key mechanism and are designed to provide robust position interlock detection for moving guards. The K-SS offers a choice of various actuators to aid installation and maintain durability, while providing robust position interlock detection for moving guards. With a rugged 316 stainless steel body and IP69K enclosure protection, the K-SS is designed to cope with the rigorous applications of the food processing, pharmaceutical, packaging and petrochemical industries.
Depending upon the risk assessment for the application, they can be used independently to provide positively operated contacts to EN60947-5-1 or they can be used in combination with any dual channel safety monitoring relays to provide up to Category 4 PLe ISO13849-1 or SIL3 EN62061. They offer a choice of various actuators to aid installation and maintain durability.
The switch is rigidly mounted to the frame of the guard or machine. The actuator is fitted to the moving part (frame) of the guard and is aligned to the switch entry aperture. The actuator profile is designed to match a cam mechanism within the switch head and provides a positively operated not easily defeatable interlock switch. When the actuator is inserted into the switch the safety contacts close and allow the machine start circuit to be enabled. When the actuator is withdrawn from the switch the safety contacts are positively opened and the machine circuit is broken. K-SS Series switches have a rugged 316 stainless steel body and have been designed to cope with the rigorous applications of the food processing, pharmaceutical, packaging and petrochemical industries. They have IP69K enclosure protection and can be pressure hosed with detergent at high pressure and temperature.
Specifications
Standards: ISO14119, EN60947-5-1, EN60204-1, ISO13849-1, EN62061 UL508
Safety Classification and Reliability Data
Mechanical Reliability B10d: 2.5 x 106 operations at 100 mA load
ISO13849-1: Up to PLe depending upon system architecture
EN62061: Up to SIL3 depending upon system architecture
Safety Data – Annual Usage: 8 cycles per hour/24 hours per day/365 days
PFHd: 3.44 x 10-8
Proof Test Interval (Life): 35 years
MTTFd: 356 years
Utilization Category: AC15 A300 3A
Thermal Current (lth): 5A
Rated Insulation/Withstand Voltages: 500 Vac/2500 Vac
Travel for Positive Opening: 8 mm (0.31″)
Actuator Entry Minimum Radius:
Standard: 175 mm (6.89″)
Flexible: 100 mm (3.93″)
Maximum Approach/Withdrawal Speed: 600 mm/s
Body Material: 316SS
Head Material: 316SS
Enclosure Protection: IP67, IP69K
Operating Temperature: -25 to 80°C (-13 to 176°F)
Vibration: IEC 68-2-6, 10 to 55 Hz + 1 Hz; excursion: 0.35 mm, 1 octave/min
Conduit Entry: 1/2 NPT or M12 8-way (see To Order table)
Fixing: 4 x M5
Weight (of Switch): 635 g (1.40 lb)
US Price Starts at $125
About OMEGA
Since its inception in 1962, OMEGA has grown from manufacturing a single product line of thermocouples to an established global leader in the technical marketplace, offering more than 100,000 state-of-the-art products for measurement and control of temperature, humidity, pressure, strain, force, flow, level, pH and conductivity. OMEGA also provides customers with a complete line of data acquisition, electric heating and custom engineered products.
For the past three decades our handbooks have served as valuable reference tools for engineers around the world. And though we are an established direct-marketing pioneer, our people, facilities and superior client services go well beyond the OMEGA handbooks.
It is our commitment to quality instrumentation and exceptional customer service that has remained the cornerstone of our success. OMEGA´s priority is clear. Our facilities exist to “facilitate” solutions to your needs.
For more information, visit www.omega.com.
