Siemens SIMATIC ET 200S - Page 480

Analog Electronic Modules
12-74
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Basic error limit
1)
(operational error limit at
25 _C, related to the input
range)
0.05 %
Temperature error (in
relation to input range)
0.003 %/K
Linearity error (relative to
the input range)
0.03 %
Repetition accuracy
(in transient state at 25 _C,
relative to input range)
0.01 %
Data for selection of the sensor
Input range (rated
value)/input resistance
• Current 20 mA/50 Ω
4to20mA/50Ω
Permitted continuous input
current (destruction limit)
40 mA (on one
single channel)
Load of the 2-wire
transducer
max. 750Ω
Smoothing of measured
values
Yes, configurable in
4 stages by digital
filtering
Level
No
weak
medium
strong
Time constant
1 x cycle time
4 x cycle time
32 x cycle time
64 x cycle time
1)
When configuring modules the runtime
calibration can be enabled for periodic
compensation of error voltage changes of the
A/D converter. The update of new data is
delayed by 200 ms during the calibration
interval. The precision limits of the module are
reached without runtime calibration.
12.13 2AI I 4WIRE High Speed analog electronic module
(6ES7 134-4GB61-0AB0)
Order number
6ES7 134-4GB61-0AB0
Properties
• 2 inputs for current measuring
• Current-limited sensor power supply (90 mA)
• Input ranges:
-- 4to20mA,resolution13bits
-- 0to20mA,resolution13bits
--
 20 mA, resolution 13 bits + sign
• Supports clock synchronized mode
-- Minimum possible time for the clock-synchronized DP cycle (T
DPmin
): 2.5 ms
-- Minimum possible conversion time of the input module (T
WEmin
): 1.1 ms