Safety Interlock Switches MF Series Tamper-Resistant Ferroresonant Safety Interlock Switch Tamper resistantthe combination of magnetic and ferrore- sonant signals required to close the safety contacts makes the MF Series switch very tamper resistant. Fulfills the requirements of category 3 (EN 954-1). Compact sizethe MF Series switch is pre-wired and mounts easily on 1-in. square tubing Misalignment tolerantactuator misalignment of up to 0.27 in. is tolerated by the MF Series switch Color LED Status Indicator on the MF Series switch makes it easy to determine the status of the switch NEMA 6 enclosure enables the MF Series switch to withstand high pressure steam cleaning Expandable systemthe MF Series switches can be wired in Series/Parallel so that multiple doors may be guarded. The safety monitoring relay or control unit must accept 1 NC/1 NO inputs. See wiring diagram example. Long lifethe MF Series switch is designed for a minimum of one million actuations. Conforms to EN292, EN60204, EN954-1, EN1088, EN60947-5-3 A Rapid Delivery Product: Select models are available for ship- ment today or within 3 to 5 days Specifications Electrical All Models Power Supply: 24 VDC Power Consumption: 2 VA/2 W Internal Fuse: 1 A on switch contacts External Fuse (Customer 0.5 A Supplied): Contact Configuration: 1 N/O + 1 N/C Contact Operating Distance: 9 mm ON/10 mm OFF Max Switched AC: 0.5 A/120 VAC Max Switched DC: 0.5 A/24 VDC Min Switched Current/Voltage: 10 mA/10 V Cable Length: 100 m max. Mechanical Mounting: 4 x M4 screws Case Material: ABS plastic Weight: 270 g (9.5 oz.) Color: Red Dual Indicator: Green = Guard Closed Red = Guard Open Environmental Protection: IP67 (NEMA 6) Operating Temperature: -10 to 55C (14 to 131F) Humidity: 90% RH at 50C (122F) Compliance Standards: EN292, EN60204, EN954-1, EN1088, EN60947-5-3 Approvals/Listings: CE marked for all applicable directives, UL and cULus pending Specifications are subject to change without notice. Note: The safety contacts of the STI switches are described as normally closed (N/C)i.e., with the guard closed, actuator in place, and the machine able to be started. www.omron247.com 1MF Series Safety Interlock Switches Operation Operating Principle On presenting the actuator to the switch, the high intensity magnetic field, together with a resonant frequency signal, causes the contacts to close. On removing the actuator (opening the door), the safety contacts open, isolating the machine. The switch can not be overridden by magnets, tools, etc. Switch Contacts and Connections Blue Supply 24 VDC+ ve Red Supply 24VDC + ve 0.5 Amp Black Normally White Closed 0.5 Amp Actual Size Green Normally Yellow Opened 19 mm Switch 0.75 in. Mounting Examples 82.5 mm 3.25 in. 2 www.omron224.com