simatic s7-300 - megaelektrik.net
simatic s7-300 - megaelektrik.net
simatic s7-300 - megaelektrik.net
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SIMATIC S7-<strong>300</strong><br />
Function modules<br />
SIWAREX U<br />
■ Overview<br />
4<br />
SIWAREX U is the optimum solution wherever strain gauge<br />
sensors, such as load cells, force sensors or torque measuring<br />
shafts, are used for measuring tasks. The following are typical<br />
SIWAREX U applications:<br />
• Fill level monitoring of silos and bunkers<br />
• Monitoring of crane and cable loads<br />
• Measurement of load of conveyor belts<br />
• Overload protection in industrial elevators and rolling mills<br />
• Scales for potentially explosive areas (can be implemented by<br />
using an Ex interface)<br />
• Monitoring of belt tension<br />
■ Technical specifications<br />
Integration in automation systems:<br />
• S5-95U/DP (PROFIBUS master)<br />
• S5-115U/-135U/-155U<br />
• S7-<strong>300</strong><br />
• S7-400<br />
• PCS 7<br />
• M7-<strong>300</strong><br />
• M7-400<br />
•C7<br />
• Automation systems from other<br />
vendors<br />
Stand-alone<br />
(without SIMATIC CPU)<br />
Communication interfaces<br />
Connection of remote indicators<br />
(through TTY serial interface)<br />
Adjustment of scales settings<br />
Measuring properties<br />
• Error limit according to DIN 1319-1<br />
of full-scale value at 20 °C ±10K<br />
• nIND according to EN 45501<br />
Minimum measuring signal ∆Umin<br />
per d<br />
• Internal resolution<br />
Data format of weight values<br />
Number of<br />
measurements/second<br />
Digital filter<br />
Weighing functions<br />
• Weight values<br />
•Limits<br />
• Zero setting function<br />
Load cells<br />
Via ET 200M<br />
Via ET 200M<br />
Direct integration<br />
Via ET 200M<br />
Via ET 200M<br />
Direct integration<br />
Via ET 200M<br />
Via IM or ET 200M<br />
Via ET 200M<br />
Possible with IM 153-1<br />
• SIMATIC S7 (P bus)<br />
•RS 232<br />
• TTY<br />
Gross, channel 1, 2 or default<br />
value 1, 2<br />
Using SIMATIC S5/S7/M7/C7<br />
(P bus) or SIWATOOL U parameterization<br />
software (RS232)<br />
0.05 %<br />
3,000 (not legal-for-trade)<br />
1.5 µV<br />
65,535<br />
2 byte (fixed-point)<br />
50<br />
0.05 - 5 Hz (in 7 steps),<br />
mean-value filter<br />
Gross<br />
2 (min./max.)<br />
Per command<br />
Strain gauges in<br />
4-wire or 6-wire system<br />
Load cell powering<br />
• Supply voltage Us (rated value)<br />
• Max. supply current<br />
• Permissible load resistance<br />
(per weighing channel)<br />
-RLmin<br />
-RLmax<br />
-RLmin<br />
-RLmax<br />
Permissible load cell<br />
characteristic<br />
Permissible range of measuring<br />
signal (at greatest set characteristic)<br />
Max. distance of load cells<br />
Intrinsically-safe<br />
load cell powering<br />
Supply voltage 24 V DC<br />
• Rated voltage<br />
• Max. current consumption<br />
Voltage supply from backplane<br />
bus<br />
Certification<br />
IP degree of protection to<br />
DIN EN 60529; IEC 60529<br />
Climatic requirements<br />
Tmin (IND) to Tmax (IND))<br />
(operating temperature)<br />
• Vertical installation<br />
• Horizontal installation<br />
10.3 V DC<br />
≤ 240 mA single-channel<br />
≤ 120 mA two-channel<br />
> 41 Ω single-channel<br />
> 82 Ω two-channel<br />
87 Ω<br />
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