Siemens SIMATIC ET 200S Manual page 459

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
Crosstalk between the in-
puts
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
reference to the input
range)
Linearity error (with
reference 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
4 to 20 mA/13 bit
0 to 20 mA/13 bit
"20 mA/13 bits +
sign
> 50 dB
"0.3%
"0.2%
"0.01%/K
"0.01%
"0.05%
Analog Electronic Modules
Sensor power supply outputs
Number of outputs
Output voltage
•
With load
Output current
•
Rated value
•
Permitted range
Short-circuit protection
Data for selecting a sensor
Input range (rated
value)/input resistance
• Current
Connection of the sensors
•
For current
measurement as
two-wire transmitter
Load of the two-wire
measuring transducer
Maximum input current for
current input (destruction
limit)
Smoothing of the measured
values
Step
None
Weak
Medium
Strong
1)
Without sensor supply voltage
2)
DPV1 only
3)
Parameter assignment error
Violation of lower limit value
Violation of upper limit value
Open circuit (only with 4 to 20 mA)
Hardware interrupt lost
2
L+ (-2.5 V)
90 mA
(both channels)
0 mA to 90 mA
Yes, electronic
4 to 20 mA/50 W
0 to 20 mA/50 W
"20 mA/50 W
Possible
Max. 670W
60 mA
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
13-75