© Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MCS ■ Overview ■ Application Milltronics MCS provides continuous, in-line weighing at minimal cost. The stainless steel load cells ensure long-term, consistent, reliable measurement. The modular construction and easy assembly of the MCS ensures quick delivery to meet even the tightest of schedules. Operating with Milltronics BW500, or SIWAREX FTC microprocessor-based integrators, the MCS provides indication of flow rate, total weight, belt load, and belt speed of bulk solids materials on a belt conveyor. To complete the weighing system, include a speed sensor to monitor conveyor belt speed for input to the integrator. On mobile crushing equipment, the TASS speed sensor is a compact, rugged speed sensor designed for use with the MCS. Milltronics MCS is a compact, rugged, modular, heavy-duty belt scale for use in mobile crushers and aggregate screening plants. Idler not included with belt scale. ■ Benefits • • • • • Rugged design Low profile Easy retrofit Low cost Stainless steel load cells 4 Siemens WT 10 · Update 04/2015 4/15 © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MCS ■ Technical specifications 1) 2) 3) Milltronics MCS Milltronics MCS Mode of operation Measuring principle Typical application Strain gauge load cells measuring load on belt conveyor idlers Mobile crusher systems Weight Up to 20 kg (44 lb), 10 kg (22 lb) per side Interconnection wiring (to integrator) • < 150 m (500 ft) 18 AWG (0.75 mm²) 6 conductor shielded cable • > 150 m (500 ft) to 300 m (1 000 ft) 18 … 22 AWG (0.75 … 0.34 mm²), 8 conductor shielded cable Approvals • CSA/FM Class II, Div. 1, Groups E,F,G and Class III • ATEX II 2D, Ex tD A21 IP65 T90 ºC • GOST-R Ex • IEC Ex, Ex tD A21 IP65 T90 ºC • CE, RCM, GOST-R, RTN Measurement accuracy Accuracy1) • ± 0.5 … 1 % of totalization over 25 … 100 % operating range, application dependent • ± 2 % of totalization over 25 … 100 % operating range on mobile crusher applications Repeatability ± 0.1 % Belt design Belt width • Up to 1 600 mm (60 inch CEMA) width • Refer to the dimensional drawing Belt speed Up to 4 m/s (800 fpm)2) Capacity Up to 2 400 t/h (2 640 STPH) 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 100 … 150 mm (4 … 6 inch) Idler spacing 0.6 … 1.2 m (2.0 … 4.0 ft) Load cell Construction 17-4 PH (1.4568) stainless steel construction with 304 (1.4301) stainless steel cover Degree of protection IP67, IP65 on hazardous approved models Cable length 3 m (10 ft) Excitation 10 V DC nominal, 15 V maximum 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 25, 50, 100, 250, 500 lb stainless steel Overload 150 % of rated capacity, ultimate 300 % of rated capacity Temperature • -50 … +75 °C (-58 … +167 °F) operating range • -40 … +65 °C (-40 … +150 °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. 4/16 Siemens WT 10 · Update 04/2015 © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MCS ■ Selection and ordering data Article No. Milltronics MCS belt scale A compact, rugged, modular, heavy-duty belt scale for use in mining and aggregate screening plants 7MH7125- Further designs 7777 0 Please add "-Z" to article no. and specify order code(s). Click on the Article No. for the online configuration in the PIA Life Cycle Portal. Stainless steel tag [69 x 38 mm (2.7 x 1.5 inch)], Measuring-point number / identification (max 27 characters), specify in plain text Scale construction Standard duty, CE, RCM Manufacturer's test certificate: According to EN 10204-2.2 Load cell capacity 50 lb (22.7 kg) (use not recommended for mobile crushers) ¢ AA 100 lb (45.5 kg) (use not recommended for mobile crushers) ¢ AB 250 lb (113.6 kg) ¢ 500 lb (226.8 kg) 25 lb (11.3 kg) (use not recommended for mobile crushers) ¢ C11 Operating instructions Article No. MCS belt scale, multi-language A5E33071768 Belt Scale Application Guidelines • English 7ML1998-5GA01 • French 7ML1998-5GA11 AC • German 7ML1998-5GA31 ¢ AD • Spanish 7ML1998-5GA21 ¢ AE Hazardous location certificates 7ML1998-5KH81 BB Note: The operating instructions should be ordered as a separate item on the order. ¢ Fabrication ¢ 1 Polyester painted mild steel, for use with flat bar or ¢ MWL calibration 2 Polyester painted mild steel ¢ Y15 Application Eng. reference number (max. 15 charac-¢ Y31 ters), specify in plain text. ¢ 1 Hazardous Duty ¢ 2 CSA/FM Class II, Div. 1, Groups E,F,G and Class III, ATEX II 2D, IECEx, CE, RCM Not specified1) Order Code This device is shipped with the Siemens Milltronics manual DVD containing the complete operating instructions library. 4 Spare parts Stainless steel load cell [17-4 PH (1.4568) stainless steel construction with 304 (1.4301) stainless steel cover] 25 lb (11.3 kg) 7MH7725-1DR 50 lb (22.7 kg) 7MH7725-1DH 100 lb (45.4 kg) 7MH7725-1DJ 250 lb (113.4 kg) 7MH7725-1DK 500 lb (226.8 kg) 7MH7725-1DS 25 lb (11.3 kg), CSA/FM/ATEX/IECEx 7MH7725-1DQ 50 lb (22.7 kg), CSA/FM/ATEX/IECEx 7MH7725-1DL 100 lb (45.4 kg), CSA/FM/ATEX/IECEx 7MH7725-1DM 250 lb (113.4 kg), CSA/FM/ATEX/IECEx 7MH7725-1DN 500 lb (226.8 kg), CSA/FM/ATEX/IECEx 7MH7725-1DP Conduit replacement kit 7MH7723-1NA Calibration weights Flat bar/MWL retrofit kit 7MH7723-1HA Calibration test arm assembly, c/w one 8.2 kg (18 lb) calibration weight 7MH7723-1FR Calibration test arm assembly, c/w two 8.2 kg (18 lb) calibration weights 7MH7723-1FS MCS calibration arm c/w idler clip (holds up to two 8.2 kg (18 lb) weights 7MH7726-1AD Calibration weight, 18 lb (8.2 kg) 7MH7724-1AA Calibration weight, 6 lb (2.7 kg) 7MH7724-1AB Milltronics flat bar calibration weights, see page 4/59. Note: Calibration accessories should be ordered as a separate item on the order. ¢ We can offer shorter delivery times for configurations designated with the Quick Ship Symbol ¢ 1) Only for quotation purposes, not a valid ordering option. Siemens WT 10 · Update 04/2015 4/17 © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MCS ■ Dimensional drawings Plan View Front View Standard base CEMA idler or equivalent (customer supplied) 75 (2.95) 16 (0.63) 101 (3.98) Customer supplied stringer Shipping brackets to suit up to 1 600 (60) belt width Belt direction Apply optional flat bar weight Side View 150 (5.91) 146.05 (5.75) Optional flat bar weigh arm1) 4 160 (6.30) Idler clamp Mounting flange 1) A A 75 (2.95) 150 (5.91) View A-A MCS, dimensions in mm (inch) 4/18 Siemens WT 10 · Update 04/2015 124 300 (4.9) (11.81) View A-A Not recommended for inclined conveyor applications Note: A minimum of 2 approach and 2 retreat idlers should be aligned with the weigh idler to within 0.75 (+1/32) to 0 (0). © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics MCS ■ Schematics Belt travel Note: Conduit and connector not provided on hazardous approved option Conduit and box connector Load cell A Load cell B Detail A See detail A Load cell B Red Black White Green Shield Shield Red Black White Green Load cell A 4 Shield + SIG B - SIG B + SIG A - SIG A - EXC + EXC Stringer mounted junction box (by customer) MCS connections Siemens WT 10 · Update 04/2015 4/19