© Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MUS ■ Overview ■ Application Milltronics MUS operates with products like aggregates, sand, or minerals, providing continuous in-line weighing at a minimal cost. With no cross bridge, this versatile unit will fit most conveyor widths and standard idlers, and product build-up is reduced. The construction and easy assembly of the MUS ensures quick delivery to meet even the tightest of schedules. Where scales are moved from conveyor to conveyor, the MUS also provides unmatched flexibility. Milltronics MUS is a modular designed, medium to heavy-duty belt scale for process indication. Idler not included with belt scale. ■ Benefits • • • • Unique modular design Simple installation Low cost Easy retrofit 4 4/10 Siemens WT 10 · Update 04/2015 Operating with Milltronics BW500, or SIWAREX FTC microprocessor-based integrators, the MUS provides indication of flow rate, total weight, belt load, and speed of bulk solids materials on a belt conveyor. A speed sensor monitors conveyor belt speed for input to the integrator. © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MUS ■ Technical specifications 1) 2) 3) Milltronics MUS Milltronics MUS Weight Standard duty up to 44 lb (20 kg), 22 lb (10 kg) per side Heavy-duty up to 64 lb (30 kg), 32 lb (15 kg) per side Interconnection wiring (to integrator) ± 0.5 … 1 % of totalization over 25 … 100 % operating range, application dependent • < 150 m (500 ft) 18 AWG (0.75 mm²) 6 conductor shielded cable • > 150 m … 300 m (500 … 1 000 ft) 18 … 22 AWG (0.75 … 0.34 mm²) 8 conductor shielded cable Hazardous locations Consult the factory ± 0.1 % Approvals CE, RCM, GOST-R, CMC Mode of operation Measuring principle Heavy duty strain gauge load cells measuring load on belt conveyor idlers Typical applications • Monitor fractionated stone on secondary surge belts and recirculating loads • Track daily production totals Measurement accuracy Accuracy1) Repeatability Medium conditions Max. material temperature 65 °C (150 °F) Belt design Belt width • Standard duty up to 1 000 mm (CEMA width up to 42 inch) • Heavy-duty up to 1 524 mm (CEMA width up to 60 inch) • Refer to dimensional drawing Belt speed Up to 3.0 m/s (600 fpm)2) Capacity Up to 5 000 t/h at maximum belt speed Conveyor incline • ± 20° from horizontal, fixed incline • Up to ± 30° with reduced accuracy3) 4 Idlers Idler profile • Flat to 35° • To 45° with reduced accuracy3) Idler diameter 50 … 180 mm (2 … 7 inch) Idler spacing 0.6 … 1.5 m (2.0 … 5.0 ft) Load cell Construction Nickel plated alloy steel Degree of protection IP66 Cable length 3 m (10 ft) Excitation 10 V DC nominal, 15 V DC max. Output 2 mV/V excitation at rated load cell capacity Non-linearity and hysteresis 0.02 % of rated output Non-repeatability 0.01 % of rated output Capacity • Standard duty ranges 20, 30, 50, 75, 100 kg (44, 66, 110, 165, 220 lb) • Heavy-duty ranges 50, 100, 150, 200, 500 kg (110, 220, 330, 440, 1 100 lb) Overload 150 % of rated capacity, ultimate 200 % of rated capacity Temperature • -40 ... +65 °C (-40 ... +150 °F) operating range • -10 ... +40 °C (15 ... +105 °F) compensated 1) 2) 3) Accuracy subject to: On factory approved installations the belt scale system’s totalized weight will be within the specified accuracy when compared to a known weighed material test sample. The test rate must be within the specified range of the design capacity and held constant for the duration of the test. The minimum material test sample must be equivalent to a sample obtained at the test flow rate for three revolutions of the belt or at least ten minutes running time, whichever is greater. Contact Siemens application engineering ([email protected]) for consideration of higher belt speeds. Review by Siemens application engineer required. Siemens WT 10 · Update 04/2015 4/11 © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MUS ■ Selection and ordering data Milltronics MUS belt scale Modular design, medium- to heavy-duty scale for process indication. Flat bar calibration weights are optional and should be ordered as separate items, see page 4/59. Article No. 7MH7123- Further designs 7 7 77 0 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 Application Eng. reference number (max. 15 characters), specify in plain text. Y31 Manufacturer's test certificate: According to EN 10204-2.2 C11 Operating instructions Article No. • English 7ML1998-5CQ02 Load cell capacity • French 7ML1998-1CQ11 Standard Duty Scale Load Cell • Spanish 7ML1998-1CQ21 A5E32015599 7ML1998-1CQ41 Click on the Article No. for the online configuration in the PIA Life Cycle Portal. Scale construction Standard for belt width up to 1 000 mm (42 inch), nickel plated steel load cells 1 Heavy-duty for belt width up to 1 524 mm (60 inch), nickel plated steel load cells 2 lb)1) AA • German 30 kg (66.1 lb)1) AB • Dutch 50 kg (110.2 lb)1) AC Belt Scale Application Guidelines 75 kg (165.3 lb)1) AD • English 7ML1998-5GA01 AE • French 7ML1998-5GA11 XX • Spanish 7ML1998-5GA21 • German 7ML1998-5GA31 20 kg (44.1 100 kg (220.4 Not 4 Order Code lb)1) specified2) Heavy-Duty Scale Load Cell 50 kg (110.2 lb)3) Note: The operating instructions and application guidelines manual should be ordered as separate items on the order. BA 100 kg (220.4 lb)3) BB 150 kg (330.7 lb)3) BC 200 kg (440.9 lb)3) BD 300 kg (661.4 lb)3) BE 500 kg (1102.3 lb)3) BF This device is shipped with the Siemens Milltronics manual DVD containing the complete operating instructions library. Spare parts Standard Duty Scale Load Cell Fabrication Polyester painted mild steel 1 20 kg (44.1 lb) 7MH7725-1CP 30 kg (66.1 lb) 7MH7725-1CQ 50 kg (110.2 lb) 7MH7725-1CR 75 kg (165.3) 7MH7725-1CS 100 kg (220.5 lb) 7MH7725-1CT Heavy-Duty Scale Load Cell 50 kg (110.2 lb) 7MH7725-1CU 100 kg (220.5 lb) 7MH7725-1CV 150 kg (330.7 lb) 7MH7725-1CW 200 kg (440.9 lb) 7MH7725-1CX 300 kg (661.4 lb) 7MH7725-1CY 500 kg (1120.3 lb) 7MH7725-1DA Rock Guard, MUS Standard Duty Scale, spare 7MH7723-1DM Conduit replacement kit 7MH7723-1NA Calibration weights Milltronics flat bar calibration weights, see page 4/59 Note: Calibration accessories should be ordered as a separate item on the order 4/12 Siemens WT 10 · Update 04/2015 © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MUS ■ Dimensional drawings Standard duty Heavy duty Belt direction for all flat or inclined conveyors Belt direction for all flat or inclined conveyors Shipping brackets Side view Side view Shipping brackets Calibration bar support (test weight) M12 (½") mounting bolts Calibration bar support (test weight) M12 (½") mounting bolts 186 (7.310) 184 (7.25) Weigh idler 19 (0.75) 168 (6.63) 140 (5.50) 19 (0.75) 522 (20.56) 159 (6.25) Weigh idler 4 616 (24.25) Note: (2) approach and (2) retreat idlers should be aligned with the weigh idler to within 0.8 (+1/3) to 0 (0). Note: (2) approach and (2) retreat idlers should be aligned with the weigh idler to within 0.8 (+1/3) to 0 (0). Shipping brackets Shipping brackets Front view Front view Standard base CEMA idler or equivalent (customer supplied) Standard base CEMA idler or equivalent (customer supplied) 122 (4.81) 203 (8.00) Existing conveyor stringers Belt width + 230 (9) (or to suit) 76 (3.00) 143 (5.62) Existing conveyor stringers Belt width + 230 (9) (or to suit) 89 (3.50) MUS, dimensions in mm (inch) Siemens WT 10 · Update 04/2015 4/13 © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MUS ■ Schematics 'B' 'A' RR B B ee l l dd k k 'B''A' 'B''A' W h t 'B' G r n 'B' W h t 'A' 4 MUS connections 4/14 Siemens WT 10 · Update 04/2015 -SIG'A' +SIG'B' -SIG'B' -EXC Customer junction box +EXC Belt travel S S h h G i i r e e n l l 'A' d d 'B' 'A' +SIG'A' 'B' 'A' Load cells, complete with 3 m (10 ft) cable in flexible conduit with M20 panel connector S h i e l d