Integration in automation systems

• S7-400, S7-300, C7

Through ET 200S

• IM151-7 CPU

Through backplane bus

• Automation systems from other manufacturers (possible with limitations)

Through ET 200S

Communication interfaces

SIMATIC S7 (ET 200S backplane bus), RS 232, TTY

Connection of remote display
(via serial TTY interface)

Display for weight value

Adjustment of scales settings

Using SIMATIC S7 IM151-7 CPU or SIWATOOL CS PC parameter assignment software (RS 232)

Measuring accuracy

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

0.05%

Internal resolution
Data format of weight values

65 535
2 byte (fixed-point)

Number of measurements/second

50

Digital filter

0.05 ... 5 Hz (in 7 steps), mean value filter

Weighing functions

Weight values

Gross, net

Limit values

2 (min./max.)

Zero setting function

Per command

Tare function

Per command

Tare specification

Per command

Load cells

Strain gages in 4-wire or 6-wire system

Load cell powering

Supply voltage U_s (rated value)

6 V DC typ.

Max. supply current

? 68 mA

Permissible load resistance

• R_Lmin

> 87 ?

• R_Lmax

< 4 010 ?

With SIWAREX IS Ex interface:

• R_Lmin

> 87 ?

• R_Lmax

< 4010 ?

Load cell characteristic

1 mV/V to 4 mV/V

Permissible range of measuring signal (at greatest set characteristic value)

-2.4 ... +26.4 mV

Max. distance of load cells

1 000 m

Intrinsically-safe load cell powering

Optional (SIWAREX IS Ex interface)

External load cell powering

Possible up to 24 V

Connection to load cells in Ex zone 1

Optionally via SIWAREX IS Ex interface

Ex approvals zone 2 and safety

ATEX 95, FM, cUL_US Haz. Loc.

Auxiliary power supply

Rated voltage

24 V DC

Max. current consumption

150 mA

IP degree of protection to EN 60529; IEC 60529

IP20

Climatic requirements

T_{min (IND)} to T_{max (IND)}) (operating temperature)

• Horizontal installation

-10 ... +60 °C (14 … 140 °F)

• Vertical installation

-10 ... +40 °C (14 … 104 °F)

EMC requirements

according to EN 61326, EN 45501, NAMUR NE21, Part 1

Dimensions

80 x 125 x 130 mm (3.15 x 4.92 x 5.12 in)