Specifications

Installing an S7-200 PLC
2-3
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Clearance Requirements for Installing an S7-200 PLC
Use the following guidelines as you plan your installation:
 The S7-200 CPU and expansion modules are designed for natural convection
cooling. You must provide a clearance of at least 25 mm (1 in.), both above and
below the units, for proper cooling. See Figure 2-2. Continuous operation of all
electronic products at maximum ambient temperature and load reduces their
life.
 For vertical mounting, the maximum ambient temperature is reduced by 10° C.
The CPU should be mounted below any expansion modules. If you are
mounting on a vertical DIN rail, you should use the DIN rail stop.
 Allow 75 mm (3 in.) for mounting depth. See Figure 2-2.
 Be sure to allow enough space in your mounting design to accommodate the
I/O wiring and communication cable connections.
75 mm
(3 in.)
S7-200
Front of the
enclosure
25 mm
(1 in.)
25 mm
(1 in.)
Clearance for cooling
Front View
Side View
S7-200 I/O
Mounting
surface
Figure 2-2 Horizontal and Vertical Clearance Requirements for Installing an S7-200 PLC