SIPLUS SIWAREX U electronic weighing system

Integration in automation systems:

S7-300

direct integration

S7-400 (H)

via ET 200M

PCS 7 (H)

via ET 200M

C7

via IM or ET 200M

Automation systems from other manufacturers

via ET 200M

Stand-alone (without SIMATIC CPU)

possible with IM 153-1

Communication interfaces

• SIMATIC S7 (I/O bus)
• RS 232
• TTY

Connection of remote indicator
(via serial TTY interface)

Total Channel 1, 2 or preset value 1, 2

Adjustment of weighing system

via SIMATIC (I/O bus) or PC with SIWATOOL U (RS 232)

Measurement properties

Error limit according to DIN 1319-1 of full-scale value at 20 °C ± 10 K

0,05 %

Internal ADC resolution
Data format of weight values

65535
2 bytes (fixed point)

Number of measurements/second

50

Digital filter

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

Weighing system functions

Weight values

Total

Limit values

2 (min./max.)

Zero setting function

per command

Load cells

DMS in 4-wire or 6-wire system

Load cell supply

Infeed voltage Us (rated value)

6 V DC1)

Max. supply current

≤ 150 mA per channel

Permissible load resistance

• RLmin

> 40 О© per channel

• RLmax

< 4010 О©

with Ex(i) interface:

• RLmin

> 87 О© per channel

• RLmax

< 4010 О©

Permissible load cell characteristic value

up to 4 mV/V

Max. distance for load cells

500 m¹⁾
150/500 m for Gas Group IIC

500 m¹⁾ for Gas Group IIB (see Equipment Manual SIWAREX IS)

Intrinsically safe weighing system infeed

optional (Ex interface) with SIWAREX IS

Power supply

Rated voltage

24 VDC

Max. current consumption

150 mA (single-channel) / 240 mA (two-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)

• Vertical installation

0 ... +60 °C

• Horizontal installation

0 ... +40 °C

EMC requirements to

NAMUR NE21, Part 1

EN 61326

Dimensions

40 x 125 x 130 mm