SERIES BNS250 Coded-Magnet Sensors Features & Benefits • Compact size … ideal for limited space applications. • Sealed for submersibility … assures long-term reliability in the most hostile environments. • Tamper-resistant … cannot be bypassed with simple magnets. • Rugged, corrosion-resistant housing … tolerates most industrial environments. • Integral LED status indicators … facilitate easy installation and provide visual indication of switch status. • Shock and vibration tolerant … designed to withstand mechanical abuse. • Satisfy CE & fail-to-safe requirements … when used with Series AES safety controllers. Description The Series BNS250 coded-magnet sensors are designed for use as a safety interlock switch on movable machine guards/articulating robot arms. Each sensor set consists of a multiple reed switch unit and a coded-magnet actuator. The reed switches, wired in series, will only close in the presence of their matched magnetic field array. (Please order BPS250 magnet separately) Part Number Contact Configuration* BNS250-11z 1 NO & 1 NC Both switch and magnet assemblies are sealed to IP67 (submersible) standards. Their tamper-resistant design prevents bypassing with a simple magnet or improperly coded magnetic field. In addition, the BNS module features a 1meter long prewired pigtail. BNS250-12z 1 NO & 2 NC BNS250-11zG 1 NO & 1 NC BNS250-12zG 1 NO & 2 NC Operation BNS250-11zG-2205 1 NO & 1 NC The reed switch assembly is typically mounted to a stationary portion of a guard structure, with the coded-magnet assembly mounted to the movable element of the machine guard. When the guard is closed, and the matched magnetic field aligns with the reed switch unit, the switches will close. When the guard is open, or the required magnetic-field array is not properly aligned with the reed switch assembly, the sensor output will remain “off.” Typical Applications The sealed, compact BNS250 is ideal for use on movable machine guards in hostile environments. Typical applications include food processing equipment, chemical processing equipment, woodworking machinery, packaging machinery, and articulating robot arm rest position sensing. 114 AVAILABLE STANDARD MODELS BPS250 N/A Description Multiple reed switch (24VDC/100mA) assembly with 1-meter prewired pigtail Multiple reed switch (24VDC/10mA) assembly with 1 meter prewired pigtail and built-in LED display Multiple reed switch (24VDC/10mA) assembly with 1 meter pigtail (side entry) and built-in LED display Coded-magnet actuator *Contact configuration in presence of BPS250 coded-magnet actuator. *Important Note: Series BNS Coded-magnet sensors are for use in safety applications only when used with a SCHMERSAL Series AES safety controller. (Please see selection chart on Page 130.) ! " USE WITH ANY OTHER SAFETY CONTROLLER MAY DAMAGE SENSOR AND/OR VOID WARRANTY. BNS250 TECHNICAL DATA MECHANICAL SPECIFICATIONS Housing Switching Distance “S”* ELECTRICAL SPECIFICATIONS Fiberglass reinforced thermoplastic “On”: 4mm (0.16") “Off”: 14mm (0.55") IP67 –13°F to +158°F Magnetic 30g/11ms 10 to 55 Hz, amplitude 1mm CE, UL, CSA VDE 0660 Part 209 Degree of Protection Operating Temperature Operating Principle Shock Resistance Vibration Resistance Conformity to Standards Maximum Operating Voltage Maximum Continuous Current Rating Maximum Switching Capacity (Power Rating) Type Connection* 24VDC 100 mA (BNS250-11z/12z) 10 mA (BNS250-11zG/12zG) 1W (BNS250-11z/12z) 240mW (BNS250-11zG/12zG) 1 meter long LiYY4* 0.25mm2 (23AWG) pre-wired pigtail *Longer prewired cables (3M, 5M, or 10M lengths) available on request. Please consult factory. *Without ferromagnetic material in vicinity of switch or magnet. The proximity of ferrous material may affect switching distances. DIMENSIONS 33 1.30 22 .87 13 .51 13 .51 33 1.30 22 .87 8,7 .34 1000 39.37 25 .98 19 .75 ø4,5 .18 ø4,5 .18 25 .98 19 .75 13 5.1 8,7 .34 mm inch Note: BNS250 reed switch assemblies should be mounted at least 50mm (2") apart. WIRING DETAILS BNS250-11z BNS250-12z BNS250-11zG BNS250-12zG 13 (black) 14 (blue) 13 (black) 14 (blue) 13 (black) 14 (blue) 13 (black) 14 (blue) 21 (white) 22 (brown) 21 (white) C (brown) 21 (white) 22 (brown) 21 (white) C (brown) 5 3,5 .14 3,5 .14 MISALIGNMENT ALLOWANCE 3 .12 0 2,5 .10 1,5 .06 2 .08 3 .12 2 .08 1 .04 2 .08 3 .12 4 .16 115