© Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics WD600 ■ Overview ■ Technical specifications 1) 2) 3) Milltronics WD600 Milltronics WD600 is a light- to-medium-duty slider bed belt scale used for process and load-out control in manufacturing, including the food, pharmaceutical and tobacco industries. ■ Benefits Accuracy1) ± 0.5 … 1 % totalization over 25 … 100 % operating range, application dependent Repeatability ± 0.1 % Belt width 12, 18, 24, 30, 36, 42, 48 inch (300, 450, 600, 750, 900, 1 000, 1 200 mm) Belt speed 2.0 m/s (400 fpm) maximum2) Capacity Up to 100 t/h Conveyor incline • ± 20° from horizontal, fixed incline • Up to ± 30° with reduced accuracy3) Conveyor idler/slider profile • Horizontal Loading • Minimum 1.0 kg/m (0.6 lb/ft) • Maximum 76 kg/m (51 lb/ft) • Simple installation • Long weigh span for more retention time on load cells ■ Application WD600 works with an existing flat belt conveyor and the selected Siemens integrator. As material is moving along the conveyor belt and travels over the belt scale, it exerts a force proportional to the material load through the suspended weighbridge to the load cells. WD600 reacts only to the vertical component of the applied force. The resulting movement in each load cell is sensed by its strain gauges. When the strain gauges are excited by voltage from the electronic integrator, they produce an electrical signal proportional to weight, which is then applied to the integrator. The vertical movement of the load cells is limited by the positive overload stop incorporated into the design of the load cell mount. Load cell Construction 17-4 PH (1.4568) stainless steel or nickel plated alloy steel Degree of protection • Stainless steel: IP68 • Nickel plated alloy steel: IP66 Cable length 3 m (10 ft) Excitation 10 V DC nominal, 15 V DC maximum Output 2 mV/V Non-linearity 0.02 % of rated output Non-repeatability 0.01 % of rated output Capacity Stainless steel range: 6, 12, 30 kg Nickel-plated range: 10, 15, 20, 30, 50 kg 1) 2) 3) Overload 150 % of rated capacity Temperature • -40 … +65 °C (-40 … +150 °F) operating range • -10 … +40 °C (15 … 105 °F) compensated Scale construction • Stainless steel construction, bead blast finish (1 ... 6 µm, 40 ... 240 µin) • Acetal sliders Hazardous locations Consult the factory Approvals CE, meets FDA/USDA requirements for food processing, RCM, GOST-R 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 4/29 4 © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics WD600 ■ Selection and ordering data Milltronics WD600 A low- to medium- capacity scale for light to medium belt loading. 304 stainless steel construction with Delrin sliders. Load cells are available in nickel plated, or stainless steel. Two calibration weights are required and are ordered as separate line item. Refer to Calibration weights. Article No. 7MH7185- Further designs 7 7 A0 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 1 Operating instructions Article No. 2 • English 7ML1998-5KM03 3 • German A5E32015601 4 • French A5E32862113 36 inch (900 mm) 5 • Spanish A5E32862157 42 inch (1 000 mm) 6 Belt Scale Application Guidelines 48 inch (1 200 mm) 7 • English 7ML1998-5GA01 Load cell capacity • French 7ML1998-5GA11 Nickel plated • German 7ML1998-5GA31 10 kg (22 lb) D • Spanish 7ML1998-5GA21 E Note: The operating instructions should be ordered as a separate line on the order. Click on the Article No. for the online configuration in the PIA Life Cycle Portal. Belt width 12 inch (300 mm) 18 inch (450 mm) 24 inch (600 mm) 30 inch (750 mm) 4 Order Code 15 kg (33.1 lb) 20 kg (44 lb) F 30 kg (66.2 lb) G 50 kg (110 lb) L This device is shipped with the Siemens Milltronics manual DVD containing the complete operating instructions library. Spare parts Stainless steel 6 kg (13.2 lb) H 12 kg (26.4 lb) J 30 kg (66.2 lb) K Load cells Stainless steel 6 kg (13.2 lb) 7MH7725-1EG 12 kg (26.4 lb) 7MH7725-1EH 30 kg (66.2 lb) 7MH7725-1EJ Nickel plated 10 kg (22 lb) 7MH7725-1EK 15 kg (33.1 lb) 7MH7725-1EL 20 kg (44 lb) 7MH7725-1EM 30 kg (66.2 lb) 7MH7725-1EN 50 kg (110 lb) 7MH7725-1EP Slider bar middle UHMW PE (for old style WD600) 7MH7723-1KF Slider bar side UHMW PE (for old style WD600) 7MH7723-1KE Slider bar acetal 7MH7723-1KG Test chain 1.62 lb/ft (2.41 kg/m), 60 inch 7MH7723-1NF Calibration Hanger Weights 200 g (0.4 lb) 7MH7724-1AF 500 g (1.1 lb) 7MH7724-1AG 1 000 g (2.2 lb) 7MH7724-1AH 2 000 g (4.4 lb) 7MH7724-1AJ 3 500 g (7.7 lb) 7MH7724-1BQ 5 000 g (11 lb) 7MH7724-1AK 7 500 g (16.5 lb) 7MH7724-1BR 8 500 g (18.7 lb) 7MH7724-1BS 10 000 g (22 lb) 7MH7724-1BT 12 000 g (26.5 lb) 7MH7724-1BU 15 000 g (33.1 lb) 7MH7724-1BV Note: Calibration accessories should be ordered as a separate item on the order 4/30 Siemens WT 10 · Update 04/2015 © Siemens AG 2015 Belt Scales Milltronics belt scales Milltronics WD600 ■ Dimensional drawings B Belt width A B (min.) B (max.) 12 (300) 14.25 (362) 15 (381) 16.5 (419) 18 (450) 20.25 (514) 21 (533) 22.5 (572) 24 (600) 26.25 (667) 27 (686) 28.5 (724) 30 (750) 32.25 (819) 33 (838) 34.5 (876) 36 (900) 38.25 (972) 39 (991) 40.5 (1 029) 42 (1 000) 44.25 (1 124) 45 (1 143) 46.5 (1 181) 48 (1 200) 50.25 (1 276) 51 (1 295) 52.5 (1 334) WD600, dimensions A 4 ■ Schematics Load cell 'B' Load cell 'A' Belt travel Green 'B' + SIG 'B' Shield 'B' White 'B' - SIG 'B' Shield 'A' Green 'A' + SIG 'A' Customer junction box Shield White 'A' - EXC + EXC - SIG 'A' Load cell 'B' Red 'A' Red 'B' Black 'A' Black 'B' Load cell 'A' To integrator WD600 connections Siemens WT 10 · Update 04/2015 4/31