Siemens ET 200S - Page 472

Analog Electronic Modules
12-116
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Block Diagram
Backplane bus
ET 200S
backplane bus
interface mo-
dule
ADC
M
ANA
24 V
L+
1M
1
2
5
6
3
7
P1
P2
MUX
Figure 12-17 Block Diagram of the 2AI TC Standard
Technical Specifications
Dimensions and Weight
Dimensions W H D
(mm)
15 x 81 x 52
Weight Approx. 40 g
Data for Specific Modules
Number of inputs 2
Length of cable
 Shielded Max. 50 m
Voltage, Currents, Potentials
Rated load voltage L+ (from
the power module)
24 VDC
 Reverse polarity
protection
Yes
Isolation
 Between the channels
and backplane bus
Yes
 Between the channels
and load voltage L+
Yes
 Between the channels No
 Between the channels
and 24 V supply voltage
Yes
Permissible potential diffe-
rence
 Between M
ANA
and the
central grounding point
(U
ISO
)
75 VDC/60 VAC
 Between inputs and
M
ANA
(U
CM
)
2 VAC
SS
Insulation tested 500 VDC
Current consumption
 From load voltage L+ Max. 30 mA
Power dissipation of the
module
Typ. 0.6 W
Status, Interrupts, Diagnostics
Diagnostic functions
 Group error Red “SF” LED
 Diagnostic functions
readable
Yes