Siemens ET 200pro - Page 52

Mounting
3.2 Rack
ET 200pro distributed I/O system
52 Operating Instructions, 03/2013, A5E00335544-08
Required tools
● Wrench or screwdriver, matching the selected fixing screws.
● Stripping tool and crimp tool for the grounding cable.
Required accessories
Table 3- 2 Rack and grounding cable
For...
you can use...
Description
Outer fixing screws M6 cylinder head screw according
to ISO 1207/ISO 1580
(DIN 84/DIN 85)
Select the screw length to match your
setup.
You also need 8.4 mm washers
according to ISO 7092 (DIN 433)
M8 hexagonal head screw according
to ISO 4017 (DIN 4017)
Grounding cable Insulated cable, conductor cross-
section: min. 4 mm
2
You also need an M8 ring cable lug and
an M8 spring lock washer
Mounting the rack and connecting functional ground (FG)
1. Make allowances for sufficient installation space when you mount the rack onto the
carrier.
2. If necessary, mark the mounting holes on the mounting base, then drill holes with a
diameter of 8.5 mm
±0.2
mm.
3. Screw-mount (M8 screws) the rack onto the carrier.
4. Strip the grounding conductor (Cu braid, for example) and functional ground (FG), then
crimp on an M8 ring cable lug.
5. Fasten the grounding conductor using one of the bore holes of the rack: Slip the spring
lock washer, the washer and the cable lug onto the mounting screw, then screw the rack
onto the carrier.
6. Connect the opposite end of the grounding cable to ground potential.
Note
Ensure adequate equipotential bonding.