Siemens SIMATIC ET 200S Manual page 439

Analog value generation
Measuring principle
Cycle time/resolution:
• Conversion time in ms
(per channel)
• Cycle time in ms (per
module)
•
Resolution (including
overrange)
Suppression of interference, limits of error
•
Common mode
interference (U ) < 100
cm
V )
pp
Crosstalk between the
inputs
Operational limit
(entire temperature range
with reference to input
range)
Basic error limit (operational
limit at 25 _C with reference
to input range)
Temperature error (with re-
ference to the input range)
Linearity error (with refe-
rence to the input range)
Repeatability
(in steady state at 25 _C
with reference to input
range)
ET 200S Distributed I/O System
EWA-4NEB780602402-09
Instantaneous value
encoding
0.1
1
" 10 V/13 bits +
sign
" 5 V/13 bits + sign
" 2.5 V/13 bits +
sign
1 to 5 V/13 bits
> 70 dB
> 50 dB
" 0.3%
"0.2%
"0.01%/K
"0.01%
"0.05%
Analog Electronic Modules
Data for selecting a sensor
Input ranges (rated
value)/input resistance
• Voltage
Maximum input voltage for
voltage input (destruction
limit)
Connection of the sensors
•
For measuring voltage
Smoothing of the measured
values
Step
None
Weak
Medium
Strong
1)
DPV1 only
2)
Parameter assignment error
Violation of lower limit value
Violation of upper limit value
Open circuit (only with 1 to 5 V)
Hardware interrupt lost
"10 V/min. 100 kW
"5 V/min. 100 kW
"2.5 V/min. 100 kW
1 – 5 V/min. 100 kW
50 V continuous,
100 V for max. 1 ms
(pulse duty factor
1:20)
Possible
Yes, parameteriza-
ble in 4 steps by
means of digital filte-
ring
Time constant
1 x cycle time
64 x cycle time
128 x cycle time
512 x cycle time
13-55