Siemens Simatic ET 200pro FC, Operating Instructions Manual

Page: 43 / 196

Installation
4.2 Mounting the racks
ET 200pro FC
Operating Instructions, 07/2016, A5E01100763B AC
43
Tools required
● Wrench or screwdriver, matching the selected fixing screws.
● Stripping tool and crimp tool for the grounding cable.
Accessories required
Table 4- 3 Rack and grounding cable
For... you can use ... Explanation
Outer fixing screws M8 cylindrical head screw according to
ISO 1207/ISO 1580 (DIN 84/DIN 85)
Choose a suitable screw length
for your configuration. You also
need 8.4 mm washers accord-
ing to ISO 7092 (DIN 433)
Hexagonal head screw, M8, 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
1. If necessary, mark the mounting holes on the mounting base, then drill holes with
diameter of 8.5 mm
±0.2
mm.
2. Screw-mount (M8 screws) the rack onto the carrier.
3. Strip the grounding cable (Cu strip, for example) for your functional earth (FE) to a
suitable length, then crimp an M8 lug onto the conductor.
4. Fasten the grounding cable 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.
5. Connect the opposite end of the grounding cable to ground potential.
Note
Ensure adequate equipotential bonding.
Image 4-3 Grounding the wide rack