Siemens SIMATIC ET 200S Manual page 462

Analog Electronic Modules
Block diagram
backplane bus
interface mo-
P1
P2
Figure 13-15 Block diagram of the 2AI RTD Standard
Technical specifications
Dimensions and weight
Dimensions W H D
(mm)
Weight
Data for specific modules
Supports clocked operation
Number of inputs
Length of cable
• Shielded
Voltages, currents, potentials
Rated load voltage L+ (from
the power module)
•
Reverse polarity
protection
Power supply of the trans-
mitters
•
Constant-current supply
for resistance-type
sensors
•
Short-circuit protection
13-78
ET 200S
dule
24 V
L+
1M
15 x 81 x 52
Approx. 40 g
No
2
Max. 200 m
24 VDC
Yes
Yes
Approx. 1.5 mA
Yes
MUX
ADC
M
ANA
MUX
Isolation
•
Between the channels
and backplane bus
• Between the channels
and load voltage L+
• Between the channels
Permissible potential diffe-
rence
•
Between M and the
ANA
central grounding point
(U )
ISO
Insulation tested
Current consumption
•
From load voltage L+
Power dissipation of the
module
Status, interrupts, diagnostics
Diagnostic functions
•
Group error
•
Diagnostic functions
readable
ET 200S Distributed I/O System
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
EWA-4NEB780602402-09