Siemens ET 200S - Page 454

Analog Electronic Modules
12-98
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Basic error limit
1
(operational limit at 25C
with reference to input
range)
"0.05%
Temperature error (with
reference to the input
range)
"0.003%/K
Linearity error (with
reference to the input
range)
"0.03%
Repeatability
(in steady state at 25 C
with reference to input
range)
"0.01%
Data for Selecting a Sensor
Input range (rated
value)/input resistance
 Current "20 mA/50Ω
4 to 20 mA/50 Ω
Permitted input current
(destruction limit)
40 mA (on a single
channel)
Load of the two-wire
measuring transducer
Max. 750 Ω
Smoothing of the measured
values
Yes,
parameterizable in 4
steps by means of
digital filtering
Step
None
Weak
Medium
Strong
Time constant
1 x cycle time
4 x cycle time
32 x cycle time
64 x cycle time
1
Run-time calibration can be enabled at module
parameter assignment to periodically adjust for
the offset voltage drift of the A/D converter.
During the calibration interval, the updating of
data is delayed by 200 ms. The accuracy limits
of the module will be met without run-time
calibration.
12.12 2AI I 4WIRE High Speed Analog Electronic Module
(6ES7 134-4GB61-0AB0)
Order Number
6ES7 134-4GB61-0AB0
Features
 2 inputs for measuring current
 Current-limited sensor supply (90 mA)
 Input ranges:
– 4 to 20 mA, resolution 13 bits
– 0 to 20 mA, resolution 13 bits
– "20 mA, resolution 13 bits + sign