Siemens S7-400PLC Specifikace stáhnout pdf (Strana 261)

100

101

Analog modules

5.20 Analog input module SM 431; AI 8 x 14 Bit (6ES7431-1KF10-0AB0)

S7-400 Automation System Module Data

Reference Manual, Edition 09/2009, A5E00850736-06

261

Formation of analog values

Measuring principle Integrating

Integration/conversion time/resolution (per channel) (Does not go into the response time)

 Programmable

Yes

 Noise suppression f1 in Hz

60 / 50

 Integration time in ms

16,7 / 20

 Basic conversion time in ms

20,1 / 23,5

 Additional conversion time for resistance

measurements in ms

40,2 / 47

 Additional conversion time for wire break

monitoring in ms

4,3 / 4,3

 Additional conversion time for measuring

resistance in ms

5,5 / 5,5

 Resolution (including overshoot range)

14/14 bit

 Smoothing activated

16/16 bit

Measured value smoothing Parameters can be assigned in 4 stages

Basic execution time of the module, in ms (all

channels enabled)

161 / 188

Noise suppression, error limits

Noise suppression at f = nx (f1 ± 1%)

(f1 = interference frequency) n = 1, 2, ...

 Common-mode interference (UCM < 120 Vpp)

> 100 dB

 Series-mode interference (peak value of

disturbance < nominal input range)

> 40 dB

Crosstalk between inputs > 70 dB

Operational limit (across temperature range, relative to input range)

 Voltage input

– ± 80 mV

– ± 250 mV

– ± 500 mV

– ± 1 V

– ± 2.5 V

– ± 5 V

– 1 to 5 V

– ± 10 V

± 0,38 %

± 0,35 %

 Current input

– 0 to 20 mA

– ± 20 mA

– 4 to 20 mA

± 0,35 %

1 2 ... 256 257 258 259 260 261 262 263 264 265 266 ... 485 486

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