SIWAREX WP231 – Weighing Electronics Module – Siemens Modules
USD $ 957.03
SIWAREX WP231 is the optimum solution wherever load cells are used for measuring tasks. The following are typical SIWAREX WP231 applications:
- Non-automatic weighing instruments, also legal for trade
- Fill level monitoring of silos and bunkers
- Measuring of crane and cable loads
- Load measuring for industrial lifts and rolling mills
- Scales in zone 2 hazardous areas
- Force measuring, hopper scales, platform scales and crane scales
Siemens Modules WP231 Product Specifications:
Article Number |
7MH4960-2AA01 |
Integration in automation systems |
|
S7-1200 |
SIMATIC S7‑1200 system bus |
Operator panel and/or automation systems from other vendors |
Via Ethernet (Modbus TCP/IP) or RS 485 (Modbus RTU) |
Communication interfaces |
|
Commissioning options |
|
Measuring accuracy |
|
EC type approval as non-automatic weighing instrument, trade class III |
3000 d ≥ 0.5 μV/e |
Error limit according to DIN 1319-1 of full-scale value at 20 °C ± 10 K (68 °F ± 10 K) |
0.05% |
Internal resolution |
Up to ± 4 million parts |
Measuring frequency |
100 / 120 Hz |
Digital filter |
Variable adjustable low-pass and average filter |
Typical applications |
|
Weighing functions |
|
Weight values |
|
Limit values |
|
Zeroing |
Per command |
Tare |
Per command |
Tare specification |
Per command |
Load cells |
Full-bridge strain gauges in 4-wire or 6-wire system |
Load cell powering |
|
Supply voltage (regulated via feedback) |
4.85 V DC |
Permissible load resistance |
|
|
> 40 Ω |
|
< 4 100 Ω |
With SIWAREX IS Ex interface |
|
|
> 50 Ω |
|
< 4 100 Ω |
Load cell characteristic |
1 … 4 mV/V |
Permissible range of the measurement signal (with 4 mV/V sensors) |
-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 (compatibility of the load cells must be checked) |
Approvals/certificates |
|
Calibration approval |
EC type approval OIML R76 |
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 EN 60529; IEC 60529 |
IP20 |
Climatic requirements T min (IND) … Tmax(IND) (operating temperature) |
|
|
-10 … +40 °C (14 … 104 °F) |
|
-10 … +55 °C (14 … 131 °F) |
EMC requirements |
According to EN 45501 |
Dimensions |
70 × 75 × 100 mm (2.76 × 2.95 × 3.94 inch) |
Weight | 0.280 kg |
---|---|
Dimensions | 8.9 × 11 × 8.8 cm |
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