simatic-st70n-2020
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I/O systems<br />
SIMATIC ET 200 systems for the control cabinet<br />
SIMATIC ET 200SP<br />
© Siemens <strong>2020</strong><br />
I/O modules > Technology modules > SIPLUS SIWAREX WP321<br />
10<br />
■ Overview<br />
SIPLUS WP321 is a versatile and flexible weighing module<br />
for the seamless integration of a static scale into the SIMATIC<br />
automation environment.<br />
The electronic weighing system is integrated in the SIPLUS<br />
ET 200SP series and uses all the features of a modern automation<br />
system, such as integrated communication, operator control<br />
and monitoring, diagnostic system and configuration tools in the<br />
TIA Portal, SIMATIC STEP 7, WinCC flexible and PCS7.<br />
Note<br />
SIPLUS extreme products are based on SIMATIC standard<br />
products. The contents listed here were taken from the<br />
corresponding standard products. SIPLUS extreme-specific<br />
information has been added.<br />
SIPLUS WP321<br />
Article No.<br />
6AG1138-6AA00-2BA8<br />
Article No. based on<br />
7MH4138-6AA00-0BA0<br />
Ambient temperature range -40 … +60 °C<br />
Conformal coating<br />
Coating of the printed circuit boards<br />
and the electronic components<br />
Technical specifications<br />
The technical specifications of the<br />
standard product apply, except for<br />
the ambient conditions.<br />
■ Technical specifications<br />
SIPLUS WP321<br />
Integration in automation systems<br />
SIPLUS S7-300, S7-400, S7-1200 and<br />
S7-1500<br />
Other manufacturers<br />
(with restrictions)<br />
Communication interfaces<br />
Commissioning options<br />
Via SIPLUS ET 200SP<br />
interface module<br />
(PROFIBUS or PROFINET)<br />
Via SIPLUS ET 200SP<br />
interface module<br />
(PROFIBUS or PROFINET)<br />
• SIPLUS ET 200SP backplane bus<br />
• RS 485 (SIWATOOL, Siebert remote<br />
display)<br />
• Using SIWATOOL V7<br />
• Using a function block in<br />
SIPLUS CPU / touch panel<br />
Measuring accuracy<br />
According to DIN 1319-1 of full-scale 0.05 %<br />
value at 20 °C ± 10 K (68 °F ± 10 K)<br />
Internal resolution ± 2 million parts<br />
Measuring frequency<br />
100 / 120 / 600 Hz<br />
Digital filter<br />
Variable low-pass and average filter<br />
Typical applications<br />
• Non-automatic weighing<br />
instruments<br />
• Force measurements<br />
• Level monitoring<br />
• Belt tension monitoring<br />
Weighing functions<br />
Weight values<br />
•Gross<br />
•Net<br />
•Tare<br />
Limit values<br />
• 2 x min./max.<br />
•Empty<br />
Zeroing<br />
Via command from controller or HMI<br />
Taring<br />
Via command from controller or HMI<br />
External tare specification<br />
Via command from controller or HMI<br />
Calibration commands<br />
Via command from controller or HMI<br />
Load cells<br />
Full-bridge strain gauges in 4-wire or<br />
6-wire system<br />
Load cell powering<br />
Supply voltage (value applies at 4.85 V DC ± 2%<br />
sensor, cable-related voltage drops<br />
of up to 5 V are compensated)<br />
Permissible load resistance<br />
•R Lmin >40Ω<br />
•R Lmax<br />
< 4 100 Ω<br />
With SIWAREX IS Ex interface<br />
•R Lmin >50Ω<br />
•R Lmax<br />
< 4 100 Ω<br />
Load cell characteristic<br />
1…4mV/V<br />
Permissible measuring signal range -21.3...+21.3mV<br />
(at greatest set characteristic value)<br />
Max. load cell distance<br />
1 000 m (459.32 ft)<br />
Auxiliary power<br />
Nominal voltage<br />
24 V DC<br />
Max. power consumption<br />
Typ. 0.1 A @ 24 V DC (0.2 A max.)<br />
Max. SIMATIC bus power<br />
30 mA<br />
consumption<br />
10/28 Siemens ST 70 N · <strong>2020</strong>
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