Siemens ET 200S Manual page 465

Block Diagram
ET 200S
backplane bus
interface module
L+
P1
P2
1M
Figure 12-16 Block Diagram of the 2AI RTD High Feature
Technical Specifications
Dimensions and Weight
Dimensions W H D
(mm)
Weight
Data for Specific Modules
Number of inputs
Length of cable
S
Shielded
Voltage, Currents, Potentials
Rated load voltage L+ (from
the power module)
S
Reverse polarity
protection
Power supply of the trans-
mitters
S
Constant-current supply
for resistance-type
sensors
S
Short-circuit protection
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
ADC
24 V
Isolation
S
15 x 81 x 52
S
Approx. 40 g
S
2
Permissible potential diffe-
rence
Max. 200 m
S
24 VDC
Insulation tested
Current consumption
Yes
S
Yes
Power dissipation of the
module
Approx. 1.25 mA
Diagnostic functions
S
Yes
S
Analog Electronic Modules
MUX
M
ANA
MUX
Between the channels
and backplane bus
Between the channels
and load voltage L+
Between the channels
Between M and the
ANA
central grounding point
(U )
ISO
From load voltage L+
Status, Interrupts, Diagnostics
Group error
Diagnostic functions
readable
1
2
5
6
3
7
4
8
Yes
Yes
No
75 VDC/60 VAC
500 VDC
Max. 30 mA
Typ. 0.6 W
Red "SF" LED
Yes
12-109