Siemens SIMATIC ET 200pro - Page 33

Installation
4.2 Mounting the racks
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
33
Mount and ground rack
Preconditions
Table 4- 3 Required accessories
For...
you can use ...
Explanation
Outer fixing screws M8 cylindrical head screw ac-
cording 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
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
±0.2
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 Ground the rack
You have mounted and grounded the rack.