Siemens S5-135U/155U - Manual (Page 69)

4-3
System Manual
C79000-G8576-C199-06
The housing consists of bolted sheet-steel sections with ventilation openings
at the top and bottom. The housing contains the bus PCB for electrical and
logical interconnection of the modules. All the slots have guiderails which
accept the modules. Male and female connectors are thus precisely
positioned. There is a locking bar at the top of the housing to prevent the
modules from becoming accidentally detached. Modules with individual
locking are secured in the lower sectional rail. There is a cable duct for
incoming and outgoing cables at the front of the housing.
The power supply unit with the fans is situated in the lower part of the central
controller frame. Depending on the type of power supply, the input voltage is
either 24 V DC or 230/120 V AC. The AC version can be adjusted to the
required AC voltage with a selector switch.
The following table shows which modules can be inserted at which slots.
Slot No. 3 11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163
Module Type
923 coordinator
CPU 922/
CPU 928-3UA21/
CPU 928B-3UB21
CPU 928, CPU 928B
CPU 948
CP 5XX, CP 143,
CP 5430, CP 5431
1)
IM 300-5
IM 301-5
2)
IM 300-3, IM 301-3
IM 304, IM 308, IM 308B
IM 307
1) 3)
DI, DQ,
AI, AQ
1)
IP 241USW, IP 244,
IP 246, IP 247, IP 252
1)
IP 240, IP 241, IP 242,
IP 242A, IP 242B, IP 243,
IP 281
1) 4) 5)
IP 245
IP 257
6)
IP 260,
IP 261
Load power supply
-951
1)
Electrical connection Mechanical width
Housing
Power Supply Unit
Modules and Slot
Assignments in
the S5-135U/155U
CC
Central Controllers and Expansion Units Power Supply Units