SIEMENS SIMATIC S7-300 SIWAREX U Product Information
SIWAREX U is a versatile weighing module for all simple weighing and force measuring tasks. The compact module can be integrated into SIMATIC automation systems without any problems. Complete data access is possible via the SIMATIC.
Product No. / Product Description | S7-300 SIWAREX U Ordering data | ||||||
![]() | 7MH4950-1AA01 SIWAREX U WEIGHING ELECTRONICS (SINGLE CHANNEL VERSION) * FOR CONNNECTING ONE SCALE * FOR SIMATIC S7-300 AND ET200M * RS232 INTERFACE FOR CONNECT. OF A PC * TTY INTERFACE FOR REMOTE DISPLAY CONNECTION WITH BUS CONNECTOR | ||||||
![]() | 7MH4950-2AA01 SIWAREX U WEIGHING ELECTRONICS (TWO-CHANNEL VERSION) * FOR CONNNECTING TWO SCALES * FOR SIMATIC S7-300 AND ET200M * RS232 INTERFACE FOR CONNECT. OF A PC * TTY INTERFACE FOR REMOTE DISPLAY CONNECTION WITH BUS CONNECTOR |
SIWAREX U offers the following key advantages:
- Uniform design technology and consistent communication in SIMATIC
- Use in distributed plant concept through connection to PROFIBUS DB/PROFINET using ET 200M
- Measurement of weight or force with a high resolution of 65000 parts and an accuracy of 0.05 %
- Space saving through use of two-channel version for two scales
- Direct connection of a remote display to the TTY interface
- Simple adjustment of scale using the SIWATOOL U program
- Supports theoretical adjustment without adjustment weights
- Supports replacement of module without renewed adjustment of scale
- Can be used in Ex applications
Technical specifications
SIWAREX U | |
---|---|
Integration in automation systems | |
| Direct integration |
| Through ET 200M |
| Through ET 200M |
| Through ET 200M |
| Through ET 200M |
| Possible with IM 153-1 |
Communication interfaces |
|
Connection of remote displays | Gross, channel 1, 2 or default value 1, 2 |
Adjustment of scales settings | Through SIMATIC (P bus) or PC using SIWATOOL U (RS 232) |
Measuring properties | |
Error limit to DIN 1319-1 of full-scale value at 20 °C ± 10 K (68 °F ± 10 K) | 0.05% |
Internal resolution ADC | 65535 |
Number of measurements/second | 50 |
Digital filter | 0.05 … 5 Hz (in 7 steps), mean value filter |
Weighing functions | |
Weight values | Gross |
Limit values | 2 (min./max.) |
Zero setting function | Per command |
Load cells | Strain gages in 4-wire or 6-wire system |
Load cell powering | |
Supply voltage Us (rated value) | 6 V DC1) |
Max. supply current | ≤ 150 mA per channel |
Permissible load resistance | |
| > 40 Ω per channel |
| < 4010 Ω |
With Ex(i) interface | |
| > 87 Ω per channel |
| < 4010 Ω |
Permissible load cell characteristic | Up to 4 mV/V |
Max. distance of load cells | 500 m2) 500 m2) for gas group IIB (see SIWAREX IS Manual) |
Intrinsically-safe load cell powering | Optional (Ex interface) with SIWAREX IS |
Auxiliary power supply | |
Rated voltage | 24 V DC |
Max. power consumption | 150 mA (single-channel) / 240 mA (dual-channel) |
Current consumption on backplane bus | ≤ 100 mA |
Certification | ATEX 95, FM, cULUS Haz. Loc. |
IP degree of protection to DIN EN 60529; IEC 60529 | IP20 |
Climatic requirements Tmin (IND) to Tmax (IND)) (operating temperature) | |
| 0 … +60 °C (32 … 140 °F) |
| 0 … +40 °C (32 … 104 °F) |
EMC requirements according to | according to NAMUR NE21, Part 1; EN 61326 |
Dimensions | 40 x 125 x 130 mm (1.58 x 4.92 x 5.12 in) |