SFN4D-DC24V

SFN4D Low profile safety relay with forcibly guided double contacts SFN4D RELAY FEATURES 53.3 33.0 • Relay complies with EN 50205, Type B • Polarized magnet system with snap action function 14.5 • Extremely small total power loss - Nominal coil power consumption of 390mW - Double contacts with low contact resistance, e.g. [(6A)2  2.5m]  4NO = 360mW Length: 3.0 • Relay height, 14.5mm Tolerance ±0.3 mm Weight approx. 42 g • Reinforced insulation according to EN 50178 - between coil-contacts and contacts-contacts - rated voltage of the circuits 230 / 400V or 277 / 480Vrms - rated impulse voltage of 6kV  clearance  5.5 mm - pollution degree 2  creepage distance  5.5mm SPECIFICATIONS Contact Characteristics Contact configuration (a = normally open / NO, b = normally closed / NC) 4a2b AgSnO2, with Au flash Contact material 30m 2.5m Contact resistance (initial at 6V DC, 1A) Typical contact resistance Max. switching capacity 6A/8A*1 250V AC Max. switching voltage 500V AC / DC Min. switching voltage / min. switching current Reference 10V / 10mA Pick-up / drop-out / bounce time 23 / 6*2 / 2ms (approx. values at U ) nominal 107ops Mechanical life Max. switching frequency (without load) Permissible ambient temperature at nominal power consumption*3 Upper temperature limit 5Hz -25°C to 92°C 105°C Test voltage: open contact / contact-contact / contact-coil 2500 / 4000 / 5000Vrms 109 Insulation resistance at 500V DC (initial) Shock resistance (11ms) NO/NC*4 20 / 15G Vibration resistance 10 – 200 Hz (10 – 55 Hz, amplitude 2 mm)*4 Degree of protection 10G RT III*5 Unit weight 42g Important: Relay characteristics may be influenced by: Coil Operate / release and holding at 20°C (% of Unominal)*3 75% / 25% min. 48% Pick-up/nominal power consumption 219-236 / 390-420mW • strong external magnetic fields • magnetic conductive materials near the relay • narrow top-to-top mounting (printed surface to printed surface) *1 See “ELECTRICAL LIFE (Reference Data)*1” on page 2. *2 Without diode *3 See also “REFERENCE DATA” on page 3. *4 Contact interruption 1,000,000*2 *1 Test conditions: Room temperature, breathing hole closed, dielectric strength according to EN61810-1:2004. *2 Has to be confirmed DIMENSIONS CAD Data Data from our Web site. Download CAD Outer dimensions CAD Data 53.3 3 14.5 0.3 Stand-off 33 Breathing hole 1 5.4 15 12.5 15 0.3 (2x) 5.4 0.48 (12x) 3.34 General tolerance:  0.3 (2.16) 12.5 7.5 7.5 Projection mode: Schematic (Bottom view) 9 10 15 16 7 8 13 14 5 6 11 12 PC board pattern (Bottom view) 53.3 2- 3.34 +1 15 12.5 15 12.5 7.5 7.5 33 5.4 1.4 dia., typical value for manual insertion 1.6 dia., typical value for automatic insertion 2 ds_61408_en_sfn4d: 130312D SFN4D REFERENCE DATA Coil voltage characteristics 170 permissible coil voltage without contact load 160 150 140 130 Coil applied voltage [%] 120 operative range of the coil voltage 110 100 90 80 typical operate and release voltage with the +/-3σ range without preheated coil 70 60 min. recommended holding voltage 50 40 30 20 10 -30 min. release voltage at the end of the electrical life -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 Ambient temperature [oC] Thermic operating range Switching time in relation to coil excitement at 20°C 170 4 x 8A 4 x 6A 4 x 0A 170 4 NO contacts simultaneously 160 160 150 To the right of the curves the relay operates in a temperature range exceeding the stated limit of 105oC 140 130 150 140 110 Coil applied voltage [%] Coil applied voltage [%] 120 100 90 80 70 60 130 bbm 120 110 100 50 90 40 30 80 NC 1 20 NO 4 70 10 0 40 50 60 70 80 Ambient temperature ds_61408_en_sfn4d: 130312D 90 [oC] 100 110 60 0 10 20 30 40 50 60 Typ. pick-up time [ms] 3 SFN4D REFERENCE DATA, continued Load limit curve 500 300 300 W 200 Contact voltage [VDC] 250 W 200 W 150 W 100 70 100 W 80 W 50 60 W 30 40 W 20 W 20 10 W 10 0.1 0.2 0.3 0.5 0.7 1 2 3 4 5 6 7 8 10 Contact current [A] Time / current characteristic 10000 1000 Current [A] Fuse-link D II 6A , 500 V operating class gL (6A gG) DIN 49 515 100 SFN4D, Contact withstand current 10 Fuse-link 6,3A F (quick acting) glass tube 5 x 20 mm, 250V IEC 60 127-2/2 1 0.001 0.01 0.1 1 10 100 1000 10000 100000 Time [Sec] 4 ds_61408_en_sfn4d: 130312D SFN4D APPLICATION NOTES The SFN4D Safety Relay NC contact 5-6 Armature Sub card 1 NO contact 12-11 NO contact 7-8 Main card Sub card 2 NO contact 14-13 NO contact 9-10 NC contact 16-15 Remark: Only NC 5-6 monitors all NO contacts! 5 7 9 12 14 16 6 8 10 11 13 15 Legend for interpreting contact conditions Contact Condition NC (Normally Closed) NO (Normally Open) Closed Fully open Open Open or closed Closed Fully open Open Open or closed 0 Maximum (~1.5mm) >0.5mm (forcibly guided) Not defined 0 Maximum (~1.5mm) >0.5mm (forcibly guided) Not defined Symbol Contact gap The SFN4D under normal operating conditions Condition - Coil deenergized. - Armature in deenergized position. - NC contacts closed. - NO contacts have a contact gap of approx. 1.5mm. - Coil energized. - Armature in energized position. - NO contacts closed. - NC contacts have a contact gap of approx. 1.5mm. ds_61408_en_sfn4d: 130312D Illustration of Relay State Condition of Contacts 5 7 9 12 14 16 6 8 10 11 13 15 5 7 9 12 14 16 6 8 10 11 13 15 5 SFN4D The SFN4D safety relay with welded contacts Condition Illustration of Relay State Condition of Contacts - NC 5-6 welded. - Coil energized. - Armature nearly in deenergized position. 5 7 9 12 14 16 6 8 10 11 13 15 - NC 16-15 welded. - Coil energized. - Armature nearly in deenergized position. 5 7 9 12 14 16 6 8 10 11 13 15 - NO 12-11 welded. - Coil deenergized. - Armature nearly in energized position. 5 7 9 12 14 16 6 8 10 11 13 15 - NO 14-13 welded. - Coil deenergized. - Armature in nearly energized position. 5 7 9 12 14 16 6 8 10 11 13 15 - NO 7-8 welded. - Coil deenergized. - Armature in deenergized position. 5 7 9 12 14 16 6 8 10 11 13 15 - NO 9-10 welded. - Coil deenergized. - Armature in deenergized position. 6 5 7 9 12 14 16 6 8 10 11 13 15 - All NO contacts are forcibly guided. - The NO contact gaps are min. 0.5mm. - For NC 16-15, the contact condition is not defined. - All NO contacts are forcibly guided. - The NO contact gaps are min. 0.5mm. - For NC 5-6, the contact condition is not defined. - All (both) NC contacts are forcibly guided. - The NC contact gaps are min. 0.5mm. - For all NO contacts, the contact condition is not defined. - All (both) NC contacts are forcibly guided. - The NC contact gaps are min. 0.5mm. - For all NO contacts, the contact condition is not defined. - NC 16-15 is closed!! - All non-welded NO contacts show their max. contact gap. - NC 5-6 forcibly guided to the welded contact by sub card 1. The contact gap is min. 0.5mm. - NC 16-15 is closed!! - All non-welded NO contacts show their max. contact gap. - NC 5-6 forcibly guided to the welded contact by sub card 2. The contact gap is min. 0.5mm. ds_61408_en_sfn4d: 130312D SFN4D Failure modes, application examples 1)Feedback loop, 2) Self-holding circuit, 3) Safety circuit, 4) Auxiliary contacts Condition of contacts at deenergized coil K1 1. Self-holding circuit, three safety circuits K1 K2 5 7 9 12 14 16 6 8 10 11 13 15 13 11 10 8 15 5 14 12 9 7 16 1) 2) 2) 3) 3) 3) 7 9 12 14 16 6 8 10 11 13 15 One contact welded, e.g. NO 9-10 of K1. K2 6 5 6 13 11 10 8 15 5 14 12 9 7 16 Condition of contacts at deenergized coil 5 7 9 12 14 16 6 8 10 11 13 15 K1 4) One contact welded, e.g. NO 12-11 of K2. K2 6 13 11 10 8 15 5 14 12 9 7 16 Condition of contacts at deenergized coil K1 2.1. Four safety circuits 5 7 9 12 14 16 6 8 10 11 13 15 One contact welded, e.g. NO 9-10 of K1. K1 5 7 9 12 14 16 6 8 10 11 13 15 K2 6 13 11 10 8 15 5 14 12 9 7 16 1) 3) 3) 3) 3) K2 6 13 11 10 8 15 5 14 12 9 7 16 Condition of contacts at deenergized coil K1 4) One contact welded, e.g. NO 12-11 of K2. 5 7 9 12 14 16 6 8 10 11 13 15 (see wiring example, p. 8) K2 6 13 11 10 8 15 5 14 12 9 7 16 Condition of contacts at deenergized coil 2.2. Two safety circuits 7 9 12 14 16 6 8 10 11 13 15 6 13 11 10 8 15 5 14 12 9 7 16 1) { K2 5 { K1 3) 3) 4) (see wiring example, p. 8) ds_61408_en_sfn4d: 130312D Both contacts of one path are welded, e.g. NO 7-8 and NO 14-13. A safety circuit needs two paths in this failure mode. The contacts 9-10, 12-11, and 14-13 of K1 interrupt the load. K1 K2 5 7 9 12 14 16 6 8 10 11 13 15 6 13 11 10 8 15 5 14 12 9 7 16 Condition of contacts at deenergized coil Both contacts of one path are welded, e.g. NO 9-10 and NO 12-11. A safety circuit needs two paths in this failure mode. The contacts 7-8, 12-11, and 14-13 of K1 interrupt the load. K1 K2 5 7 9 12 14 16 6 8 10 11 13 15 6 13 11 10 8 15 5 14 12 9 7 16 7 SFN4D Wiring for application examples 2.1 and 2.2 1+ -2 5 6 11 12 7 8 13 14 9 10 15 16 16 15 10 9 14 13 8 7 12 11 6 5 -2 +1 1st layer 2nd layer For Cautions for Use, see Relay Technical Information. 8 ds_61408_en_sfn4d: 130312D