Mode of operation

Measuring principle

Strain gauge load cell and digital speed sensor

Typical application

Control and monitor feed rates and blending in bulk chemicals, tobacco, food, and water treatment

Measuring accuracy

Accuracy¹⁾

± 0.25 вЂ¦ 0.5 %

Repeatability

± 0.1 %

Specified range

10 … 100 % based on speed

Design rate range

45 kg/h вЂ¦ 18 t/h (100 lb/h вЂ¦ 20 STPH)

Max volumetric flow

30 m³/h (1 060 ft³/h)

Medium conditions

Operating temperature

-10 вЂ¦ +55 °C (10 вЂ¦ 131 °F)

Material

Stainless steel
[304 (1.4301) or 316 (1.4401)], bead blast finish (1 ... 6 µm, 40 ... 240 µin)

Load cells

Construction

17-4 PH (1.4568) stainless steel

Degree of protection

IP68

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

Overload

150 % of rated capacity

Temperature

• Operating range: -40 … +65 °C (-40 … +149 °F)
• Compensated: Compensated: -10 … +40 °C
  (14 … 104 °F)

Speed sensors

Optical encoder output

• RS 422 (TTL) 5 V DC, 150 mA max.
• 1 000 or 2 500 pulses per revolution (ppr)

Degree of protection

• Standard: IP64
• Stainless steel: IP66

Temperature

-10 … +70 °C (14 … 158 °F)

Framework

• Precision machined, stainless [304 (1.4301) or 316 (1.4401)] or mild steel
• Cantilevered design for easy belt replacement

Pulleys

115 mm (4.5 inch) diameter, crowned and lagged

Bearings

• 4-bolt flange mount on drive pulley
• 2-bolt threaded base pillow block on driven pulley

Belt speed

0.005 вЂ¦ 0.36 m/s (1 вЂ¦ 70 fpm)

Belt support

Slider bed frame

Belting

• Polyester carcass with polyurethane top cover and static control with vulcanized endless finger splice for max. weighing consistency (standard); optionally available in blue and as low capacity belt; product temperature up to 100 °C (212 °C)
• Belt properties in compliance with food safety regulation (EU) 10/2011 and (EC) 1935/2004
• Meets FDA 21CFR and Halal
• HACCP concept supported: resistant to hot water and ideal for frequent cleaning cycles
• Silicone high temp belt for hot material applications (product temperature up to 177 °C (350 °F), in compliance with (EU) 10/2011 and (EC) 1935/2004, meets FDA 21CFR

Belt tension

• Counter-weighted stainless steel [304 (1.4301) or 316 (1.4401)] tensioning idler for consistent tension, required for high accuracy weighing
• Screw type, telescoper module with 25 mm (1 inch) travel, stainless steel 304 (1.4301)

Belt cleaning

• PE-HD blade type with counterweight at the head pulley for cleaning product side of belt
• Return plow

Servomotor

SINAMICS Servomotor; optionally including SINAMICS S120 drive, PROFIBUS DP or ProfiNet option, length of motor and communication cables customizable.

Standard gearmotor

Helical-worm geared motor, AC, Efficiency class IE1, IEC or UL-R/CSA, IP55, incl. PTC, RAL7031, C2 coating acc. EN12944.

Food grade gearmotor

Helical-worm geared motor, AC, Efficiency class IE3, IEC or UL-R/CSA, IP66, including PTC, corrosion resistant Aluminium housing, sealed surface treatment nsd tupH, complies with FDA.

Variable frequency drive: SINAMICS S120 servo motor controller (included with supply of WW100 based on ordering options)

• 1 ph, 200 … 240 V or 3 ph, 380 вЂ¦ 480 V
• BOP for local control
• External 24 V DC power supply
• RS 232 connection port
• 4 DI, D0
• PROFIBUS DP, optionally ProfiNet

Shipping weight

91 kg (200 lb)  вЂ¦ 181 kg (400 lb) maximum

Approvals

• Declaration of incorporation of partly completed machinery acc. directive 2006/42/EC.
• RCM
• EAC
• Meets FDA requirements for food processing

299

6.895

0.035

5.75

0.029

265.2

7.77

0.040

6.48

0.033

230.1

8.96

0.046

7.47

0.038

209.18

9.856

0.049

8.21

0.041

179.4

11.49

0.058

9.58

0.048

163.09

12.64

0.064

10.53

0.053

143

14.42

0.073

12.01

0.061

127.64

16.15

0.082

13.46

0.068

113.75

18.13

0.091

15.10

0.076

105

19.64

0.100

16.36

0.083

91.93

22.43

0.113

18.69

0.094

80.6

25.58

0.130

21.32

0.108

73.12

28.20

0.143

23.50

0.119

68.82

29.96

0.151

24.96

0.126

60.67

33.98

0.172

28.32

0.143

52.65

39.16

0.198

32.63

0.165

49.87

41.34

0.209

34.45

0.174

43.27

43.27

0.241

36.06

0.201

39.33

52.42

0.265

43.68

0.221

33.73

61.12

0.308

50.94

0.257

30.67

67.22

0.340

56.02

0.283

26.89

76.67

0.388

63.89

0.323