4.5 Hardware configuration
Maximum mechanical configuration
As soon as one of the following rules applies, the maximum configuration has been reached for
an IO device based on the ET 200SP HA distributed I/O:
Table 4-1 Maximum mechanical configuration
Properties Rule
Number of modules Maximum 56 slots for I/O modules, regardless of their use
Backplane bus
length of the IO de‐
vice
Maximum configuration width (without interface module) = 1.3 m
Even number of I/O modules (max. 56) x width of the I/O modules in the IO device
(22.5 mm) + server module (5 mm) = 1265 mm
Observe the width of the carrier modules (45 mm/180 mm).
Configuration Read section "Minimum clearances in the control cabinet (Page 60)".
Maximum electrical configuration
The permissible load current of a potential group is max. 10 A (supply voltage L+/M on the light-
colored terminal block).
This load current is divided into the following portions:
● Power requirements of all I/O modules
● Power requirements of the components supplied via these I/O modules
The maximum number of I/O modules contained in a potential group is thereby limited.
Table 4-2 Permissible load current depending on the number of installed terminal blocks
Number of terminal blocks Permissible load current in amperes
4 10
5 8
6 7
7 6
8 5
10 4
15 3
20 2
Address space
The address space depends on the following used components:
● Interface module
● IO controller/IO device
The documentation is available on the Internet (Page 12).
Plant planning
4.5 Hardware configuration
ET 200SP HA Distributed I/O system
28 System Manual, 08/2019, A5E39261167-AD
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