© Siemens AG 2015 Belt Scales Speed sensors Milltronics RBSS ■ Overview ■ Design Installation RBSS Standard Mounting Stringer Wheel Belt Cable 24 (1) washers, 2 places (customer-supplied) RBSS Return belt travel Milltronics RBSS is a high resolution, wheel-driven return belt speed sensor. ■ Benefits 4 • • • • Rugged design IP67 rated Easy, low cost installation Accurate belt speed detection Stringer ■ Application 24 (1) dia. cross bar (customer-supplied) Pin clip Milltronics RBSS monitors conveyor belt speed, with the output signal transmitted by cable connection to the integrator (Milltronics BW500, or SIWAREX FTC). Easily installed close to the belt scale assembly, the RBSS provides a signal generated as the wheel on the sensor rotates on the return belt. To secure this cost-effective unit in place, position a cross bar between stringers - either just before or after a return belt idler, or use the optional mounting bracket. The weight of the RBSS ensures positive rotation of the wheel in the middle of the return belt, and pulses from the magnetic sensor are generated by the rotation of the 60 toothed speed sprocket driven by the wheel. The RBSS output can be applied to any Milltronics belt scale integrator. RBSS RBSS installation 4/42 Siemens WT 10 · Update 04/2015 © Siemens AG 2015 Belt Scales Speed sensors Milltronics RBSS ■ Technical specifications 1) 2) 3) Milltronics RBSS Mode of operation Measuring principle Proximity sensor provides pulse to integrator Typical application Aggregate belt conveyors Input Wheel rotation 2 … 450 rpm, bi-directional Output • 60 pulses per revolution, 2 … 450 Hz, 150.4 pulses/m (45.8 pulses/ft) • RBSS: open collector, NPN sinking output, max. 17 mA • RBSS IS: NAMUR NC, load current, 0 … 15 mA Rated operating conditions Ambient temperature Degree of protection • RBSS: -40 … +105 °C (-40 … +220 °F) • RBSS IS: -25 … +100 °C (-14 … +212 °F) IP67 ■ Selection and ordering data Milltronics RBSS speed sensor A high resolution wheel-driven return belt speed sensor Trailing arm Painted mild steel Sensor wheel 127 mm (5 inch) diameter, polyurethane tread Power supply • RBSS: 4.5 … 28 V DC, 16 mA • RBSS IS: 5 … 25 V DC from IS switch isolator Interconnection wiring (to integrator) • RBSS: 3 m, 3 conductor 22 AWG shielded cable - 300 m (1 000 ft) maximum cable run • RBSS IS: 2 m, 2 conductor 26 AWG PVC covered cable - 300 m (1 000 ft) maximum cable run to IS switch isolator - 300 m (1 000 ft) maximum cable run from IS switch isolator and integrator Approvals 7MH71347 7 7 77 Click on the Article No. for the online configuration in the PIA Life Cycle Portal. Model ¢ 2 60 pulses per revolution Fabrication Standard, polyester painted mild steel ¢ A Mounting options ¢ With mounting kit B Approvals CE, RCM, ATEX II 1G, Ex ia IIC T6, ATEX II 1D Ex ¢ iaD 20 T108 °C, CSA/UL Class I, Div. 1, Groups A, B, C, and D; Class II, Div. 1, Groups E, F, and G; Class III, Div. 16) 2 ¢ 3 CE, RCM Switch isolator ¢ Not required Design Article No. 4) 5) 6) 0 115 V AC4) 1 230 V AC4) 2 Further designs Order Code Please add "-Z" to article no. and specify order code(s). Stainless steel tag [69 x 38 mm (2.7 x 1.5 inch)], Measuring-point number / identification (max 27 characters), specify in plain text. ¢ Y15 Manufacturer's test certificate: According to EN 10204-2.2 ¢ C11 Operating instructions Article No. RBSS Operating instructions, multi-language Note: The operating instructions should be ordered as a separate item on the order. 7ML1998-5GX63 This device is shipped with the Siemens Milltronics manual DVD containing the complete operating instructions library. RBSS CE, RCM1) Spare parts RBSS IS (with suitable IS switch isolator or switch amplifier)2) • ATEX II 1G Ex ia IIC T6 • ATEX II 1D Ex iaD 20 T 108 °C • CSA/UL: Class I, Div. 1, Groups A, B, C, and D; Class II, Div. 1, Groups E, F, and G; Class III, Div. 1 • CE, RCM2) Wheel, 127 dia-polyurethane, sealed bearing 7MH7723-1FX Magnetic proximity switch 7MH7723-1GA Switch, inductive, NJ0.8-5GM-N (approvals option 2)4) 7MH7723-1AS P & F switch isolator, 115 V AC4) 7MH7723-1EB P & F switch isolator, 230 V AC4) 7MH7723-1EC Wheel and shaft, 152 mm dia.5) 7MH7723-1EN 60 tooth gear5) 7MH7723-1EQ Proximity switch approval ratings (Pepperl+Fuchs #NJ0.8-5GM-N) • ATEX II 1G Ex ia IIC T6 • ATEX II 1D Ex iaD 20 T 108 °C • CE, CSA, UL2) Optional switch isolator (required for RBSS IS)3) Bearing (two • Pepperl+Fuchs #KFA5-SOT2-Ex2 • ATEX II (1) G [Ex ia] IIC or #KFA6-SOT2-Ex2 • CSA/UL: Class 1, Div. 1, Groups A, B, C, and D. Class II, Div. 1, Groups E, F, and G, Class III • CE2) Conduit kit 1) 2) 3) EMC performance available upon request. Approvals for RBSS IS are based on internally mounted NAMUR slotted proximity switch (Pepperl+Fuchs #NJ0.8-5GM-N) and use of suitable IS switch isolator (amplifier). Please see RBSS operating instructions for more information. Approval ratings for the proximity switch and IS switch isolator are the property of Pepperl+Fuchs. Copies of these Approval Certificates may be obtained at http://www.siemens.com/processautomation. required)5) 7MH7723-1ER Accessories 7MH7723-1NA ¢ We can offer shorter delivery times for configurations designated with the Quick Ship Symbol ¢. 4) 5) 6) Required with RBSS IS. For use with old style RBSS PBD-51033452. Switch isolator required. Siemens WT 10 · Update 04/2015 4/43 4 © Siemens AG 2015 Belt Scales Speed sensors Milltronics RBSS ■ Dimensional drawings RBSS Mounting Bracket 105 (4.13) 51 (2) Ø25 (1) Through both sides 25 (1) Ø25 (1) Through both walls 114 (4.5) ref. 5 (0.19) 114 (4.5) 50 (1.97) 3) 38 (1.5) 3 m (10 ft) shielded cable1) 100 (3.94) 2) 29 57 (2.25) (1.13) Ø11 (0.44), 2 places 25 (1) 648 (25.5) 610 (24) Through hole for cable gland 22 (0.88) Sensor 4 Ø1 2 (5) 7 60 tooth gear 1) 2) 3) Cable for RBSS (IS, 5 ... 25 V) and RBSS (CE, 10 ... 30 V) is 2 m (6.5 ft). Dimension equals 102 (4) if manufactured in Canada. Dimension equals 51 (2) if manufactured in Canada. RBSS, dimensions in mm (inch) 4/44 Siemens WT 10 · Update 04/2015 25 (1)