SIWAREX WP241

Integration in automation systems

S7-1200

Directly via SIMATIC bus

• Operator Panel (not from the SIMATIC Basic series)
• Automation systems from other manufacturers
  (possible with limitations)

Via Ethernet (Modbus TCP/IP) or
RS 485 (Modbus RTU)

Communication interfaces

• SIMATIC S7-1200 backplane bus
• RS 485 (Modbus RTU)
• Ethernet (Modbus TCP/IP & SIWATOOL)

Commissioning of the scale

PC configuration software SIWATOOL (Ethernet) or Operator Panel (Modbus / S7-1200)

Calibration approval

MID according to OIML R50 (available soon)

Internal resolution

± 4 million parts

Number of measurements/second (internal)

100

Updating time for material flow rate

100 ms

Filter for conveyor load

Low-pass filter (limit frequency 0.05 ... 50 Hz)

Filter for belt speed

Low-pass filter (limit frequency 0.05 ... 50 Hz)

Weighing functions

Readout data

• Weight
• Belt load
• Material flow rate
• Accumulated total
• Main total
• Free totals 1 … 4
• Belt speed

Limits (min/max)

• Belt load
• Material flow rate
• Belt speed

Zeroing function

On command or automatic set to zero

Load cells

Strain gauges in 4-wire or 6-wire system

Load cell excitation

Supply voltage (regulated via feedback)

4.85 V DC

Permissible load resistance

• R_Lmin

> 40 ?

• R_Lmax

< 4100 ?

With SIWAREX IS Ex interface

• R_Lmin

> 50 ?

• R_Lmax

< 4100 ?

Load cell characteristic

1 … 4 mV/V

Permissible mesaurement signal range

-21.3 ... +21.3 mV

Max. distance of load cells

500 m (229.66 ft)

Connection to load cells in Ex zone 1

Optionally via SIWAREX IS Ex interface

Ex approvals

• ATEX Zone 2
• UL
• FM available soon

Auxiliary power supply

Rated voltage

24 V DC

Max. power consumption

200 mA

Max. power consumption SIMATIC Bus

3 mA

IP degree of protection to DIN EN 60529; IEC 60529

IP20

Climatic requirements
T_{min (IND) ...} T_{max (IND)} (operating temperature)

Vertical installation

-10 ... +55 °C (14 ... 131 °F)

Horizontal installation

-10 ... +40 °C (14 ... 104 °F)

EMC requirements according to

EN 45501

Dimensions

70 x 75 x 100 mm (2.76 x 2.95 x 3.94 inches)