Siemens SIMATIC ET 200S - Page 347

Digital Electronic Modules
11-27
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Technical data
Dimensions and weight
Dimensions W x H x D (mm) 15 x 81 x 52
Weight Approx. 35 g
Module-specific data
Supports clock synchronized
mode
Yes
Number of inputs 4
Cable length
• Unshielded max. 600 m
(164 ft)
• shielded max. 1,000 m
(164 ft)
Voltages, currents, electrical potentials
Rated supply voltage (from
power module)
24 VDC
• Polarity reversal
protection
Yes
Electrical isolation
• Between the channels No
• Between channels and
backplane bus
Yes
Permissible potential differ-
ence
• Between different circuits 75 VDC / 60 VAC
Insolation tested with 500 VDC
Current consumption
• From power supply Dependent on the
sensor
Power loss of the module Typical 0.7 W
Status, interrupts, diagnostics
Status display Green LED per
channel
Interrupts
• Process alarm Configurable
Diagnostic functions
• Group error red LED ”SF”
• Reading of diagnostic
data
Yes
Sensor power supply output
Output voltage
• Loaded Min. L+ ( --0.5 V)
Output current
• Rated v alue 500 mA
• Permitted range 0to500mA
Short-circuit protection Yes, electronic
1)
Data for selecting a sensor
Input voltage
• Rated v alue
• for ”1” signal
• for ”0” signal
24 VDC
11 to 30 V
--30to5V
Input current
• For signal ”1” Typical 8 mA
Input delay (configurable)
• ”0” to ”1” transition 0.1 ms
(0.05to0.15ms)
0.5 ms
(0.4 to 0.6 ms)
3ms
(2.7 to 3.3 ms)
15 ms (14.85 to
15.15 ms)
• ”1” to ”0” transition 0.1 ms
(0.05to0.15ms)
0.5 ms
(0.4 to 0.6 ms)
3ms
(2.7 to 3.3 ms)
15 ms (14.85 to
15.15 ms)
Input characteristic curve To IEC 61131,
type 1
Connection of 2wire BEROs possible
• permitted quiescent
current
max. 1.5 mA
1)
per module