Siemens SIMATIC ET 200S - Page 338

Digital Electronic Modules
11-18
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
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
Diagnostic functions No
Sensor power supply output
Output voltage
• Loaded Max. M +0.5 V
Output current
• Rated v alue 500 mA
• Permitted range 0to500mA
Data for selecting an sensor
Input voltage
• Rated v alue
• for ”1” signal
• for ”0” signal
24 VDC
-- 1 5 t o -- 3 0 V
1)
30 to --5 V
1)
Input current
• For signal ”1” Typ. 7 mA
(at 24 V)
Input delay
• ”0” to ”1” transition Typ. 3 ms
(2.0 to 4.5 ms)
• ”1” to ”0” transition Typ. 3 ms
(2.0 to 4.5 ms)
Input characteristic curve To IEC 61131,
type 1
Connection of 2wire BEROs possible
• permitted quiescent
current
max. 1.5 mA
1)
Reference potential is L+