Siemens SIMATIC ET 200S - Page 520

Analog Electronic Modules
12-114
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Analog Value Formation
Resolution (including sign) ¦ 20 mA/ 16 Bit
4to20mA/15bits
Conversion time (per
channel)
Max. 1.0 ms
Settling time
• For resistive load 0.25 ms
• For capacitive load 1.0 ms
• For inductive load 0.5 ms
Interference Suppression, Error Limits
Crosstalk between outputs >60dB
Operational error limits
(across the temperature
range, in relation to output
range)
0.07 %
(at 250 Ω load
resistance)
0.3 %
(at all other load
resistances)
Basic error limit
(operational error limit at
25 _C, related to the input
range)
0.03 %
(at 250 Ω load
resistance)
0.26 %
(at all other load
resistances)
Temperature error (in
relation to output range)
0.001 %/K
Linearity error (in relation
to output range)
0.02 %
Repetition accuracy
(in transient state at 25 _C,
relative to output range)
0.01 %
Output ripple (in relation to
output range, bandwidth 0
to 50 kHz)
0.02 %
Data for selection of the actuator
Output range (nominal
value)
20 mA
4to20mA
Load impedance (in the
nominal range of the
output)
• For current outputs max. 500Ω
For inductive load 1mH
Current output
• No-load voltage 18 V
Destruction limit for
externally applied
voltages/currents
• Voltage measured
between the outputs
and M
ANA
Max. 15 V
continuous; 75 V for
max. 1 s (sampling
ratio 1:20)
• Current max . DC 50 mA
Connection of actuators
• Current output
2-wire connection
possible