Siemens SIMATIC ET 200pro Original Instructions Manual page 33

Mount and ground rack
Preconditions
Table 4- 3
For...
Outer fixing screws
Grounding cable
Required tool:
● Suitable screw wrench or screwdriver.
● Stripping tool and crimp tool for the grounding cable.
Procedure
To mount and ground the rack, proceed as follows:
1. If necessary, mark the mounting holes on the mounting base, then drill holes with
diameter of 8.5 mm
2. Screw-mount 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.
Ensure adequate equipotential bonding.
Figure 4-3
You have mounted and grounded the rack.
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
Required accessories
you can use ...
M8 cylindrical head screw ac-
cording to ISO 1207/ISO 1580
(DIN 84/DIN 85)
Hexagonal head screw, M8,
according to ISO 4017 (DIN
4017)
Insulated cable, conductor
cross-section: min. 4 mm
mm.
±0.2
Ground the rack
4.2 Mounting the racks
Explanation
Choose a suitable screw length
for your configuration. You also
need 8.4 mm washers accord-
ing to ISO 7092 (DIN 433)
You also need an M8 ring cable
) lug and an M8 spring lock
2
washer
Installation
33