Integration in automation systems

SIMATIC S7-300, S7-400, S7-1200 and S7-1500

Via SIMATIC ET 200SP interface module
(PROFIBUS or PROFINET)

Other manufacturers (with restrictions)

Via SIMATIC ET 200SP interface module
(PROFIBUS or PROFINET)

Communication interfaces

• SIMATIC ET 200SP backplane bus
• RS 485 (SIWATOOL, Siebert remote display)

Commissioning options

• Using SIWATOOL V7
• Using function block in SIMATIC CPU / Touch Panel

Measuring accuracy

according to DIN 1319-1 of full-scale value at 20 °C ± 10 K (68 °F ± 10 K)

0.05%

Internal resolution

± 2 million parts

Measuring frequency

100 / 120 Hz

Digital filter

Variable adjustable low-pass and average filter

Typical applications

• Non-automatic weighing instruments
• Force measurements
• Fill-level monitoring
• Belt tension monitors

Weighing functions

Weight values

• Gross
• Net
• Tare

Limit values

• 2 x min/max
• Empty

Zeroing

Via command by controller or HMI

Tare

Via command by controller or HMI

External tare specification

Via command by controller or HMI

Calibration commands

Via command by controller or HMI

Load cells

Full-bridge strain gauges in 4-wire or 6-wire system

Load cell powering

Supply voltage (value applies at sensor, cable-related voltage drops of up to 5 V are controlled)

4.85 V DC ±2%

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 range of measuring signal
(at greatest set characteristic value)

-21.3 ... +21.3 mV

Max. distance of load cells

1000 m (459.32 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

• ATEX Zone 2
• UL
• FM
• EAC
• KCC
• IECEx
• RCM

Auxiliary power supply

Rated voltage

24 V DC

Max. power consumption

typ. 0.1 A @ 24 V DC (0.2 A max.)

Max. power consumption SIMATIC Bus

30 mA

IP degree of protection according to DIN EN 60529; IEC 60529

IP20

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

• Vertical installation in SIMATIC S7 ¹⁾

-25 ... +50 °C (-13 ... 122 °F)

• Horizontal installation in SIMATIC S7 ¹⁾

-25 ... +60 °C (-13 ... 140 °F)

EMC requirements

according to IEC 61000-6-2, IEC 61000-6-4, OIML-R76-1

Dimensions (width)

15 mm (0.6 in)