Flat type safety relays SF RELAYS (double contact) Double contact type FEATURES 1. High contact reliability 5. High breakdown voltage High contact reliability is achieved High breakdown voltage 2,500 Vrms through the use of a double contact. between contacts and coil. 2. Forced operation contacts 6. High sensitivity N.O. and N.C. side contacts are Realizes thin shape and high sensitivity connected through a card so that one (500 mW nominal operating power) by interacts with the other in movement. In utilizing high-efciency polarized 2 Form A 2 Form B case of a contact welding, the other magnetic circuit with 4-gap balanced keeps a min. 0.5mm .020inch contact armature. gap. 7. Complies with safety standards 3. Independent operation contacts Standard products are UL, CSA, TV (4 Form A 4 Form B) and SEV certied. Conform to European There are 4 points of forced operation standards. TV certied. Complies with contacts. SUVA European standard. Each pair of contacts is free from the main armature and is independent from TYPICAL APPLICATIONS each other. So if a N.O. pair of contacts 4 Form A 4 Form B are welded, the other 3 N.O. contacts are 1. Industrial equipment such as not effected (operate properly) That presses and machine tools enables to plan a circuit to detect welding 2. Elevators and other kinds of or go back to the beginning condition. hoisting mechanisms, conveyor 4. Separated chamber structure equipment. N.O. and N.C. side contacts are put in each own space surrounded with a card and a body-separater. That prevents short circuit between contacts, which is caused by their springs welding or RoHS compliant damaged. ORDERING INFORMATION SF D Contact arrangement 2: 2 Form A 2 Form B 4: 4 Form A 4 Form B Nominal coil voltage DC 5, 12, 24, 48, 60V Note: Certified by UL, CSA, TV and SEV TYPES Contact arrangement Nominal coil voltage Part No. 5V DC SF2D-DC5V 12V DC SF2D-DC12V 2 Form A 2 Form B 24V DC SF2D-DC24V 48V DC SF2D-DC48V 60V DC SF2D-DC60V 5V DC SF4D-DC5V 12V DC SF4D-DC12V 4 Form A 4 Form B 24V DC SF4D-DC24V 48V DC SF4D-DC48V 60V DC SF4D-DC60V Standard packing: Carton: 20 pcs. Case: 200 pcs. ASCTB120E 201408-T 1SF Double contact type RATING 1. Coil data Nominal coil current Coil resistance Nominal operating Max. applied Contact Nominal coil Pick-up voltage Drop-out voltage 10% 10% power voltage arrangement voltage (at 20C 68F) (at 20C 68F) (at 20C 68F) (at 20C 68F) (at 20C 68F) (at 20C 68F) 5V DC 100mA 50 12V DC 41.7mA 288 75%V or less of 10%V or more of 2 Form A 2 Form B 24V DC nominal voltage nominal voltage 20.8mA 1,152 500mW (Initial) (Initial) 48V DC 10.4mA 4,608 60V DC 8.3mA 7,200 120%V of nominal voltage 5V DC 100mA 50 12V DC 41.7mA 288 75%V or less of 15%V or more of 4 Form A 4 Form B 24V DC nominal voltage nominal voltage 20.8mA 1,152 500mW (Initial) (Initial) 48V DC 10.4mA 4,608 60V DC 8.3mA 7,200 2. Specications Characteristics Item Specications Arrangement 2 Form A 2 Form B 4 Form A 4 Form B Contact Contact resistance (Initial) Max. 30 m (By voltage drop 6 V DC 1A) Contact material Au-ashed AgSnO2 type Nominal switching capacity (resistive load) 6A 250V AC, 6A 30V DC Max. switching power (resistive load) 1,500VA 180W Max. switching voltage 440V AC, 30V DC Rating Max. switching current 6A Nominal operating power 500mW 1 Min. switching capacity (Reference value)* 100mA 5V DC Insulation resistance (Initial) Min. 1,000M (at 500V DC) Measurement at same location as Breakdown voltage section. Between open contacts 1,300 Vrms for 1min. (Detection current: 10mA) Breakdown voltage Between contact sets 2,500 Vrms for 1min. (Detection current: 10mA) (Initial) Between contact and coil 2,500 Vrms for 1min. (Detection current: 10mA) Electrical Max. 45C 113F characteristics Temperature rise (coil) (at 20 68F) (By resistive method, nominal voltage applied to the coil contact carrying current: 6A) Operate time Max. 30ms (Nominal voltage applied to the coil, excluding contact bounce time.) Max. 15ms (Nominal voltage applied to the coil, excluding contact bounce time.) Release time (without diode) 2 Functional Min. 294 m/s (Half-wave pulse of sine wave: 11 ms detection time: 10s) Shock resistance 2 Destructive Min. 980 m/s (Half-wave pulse of sine wave: 6 ms) Mechanical characteristics Functional 10 to 55 Hz at double amplitude of 2 mm (Detection time: 10s) Vibration resistance Destructive 10 to 55 Hz at double amplitude of 2 mm 7 Mechanical Min. 10 (at 180 times/min.) Expected life 5 Electrical Min. 10 (at 20 times/min.) Ambient temperature: 40C to +70C 40F to +158F 2 Conditions for operation, transport and storage* Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature) Conditions Max. Operating speed 180 times/min. Unit weight Approx. 38g 1.34oz Approx. 47g 1.66oz Notes: *1. This value can change due to the switching frequency, environmental conditions and desired reliability level, therefore it is recommended to check this with the actual load. *2. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage conditions in NOTES. ASCTB120E 201408-T 2