A.4.2
Tools and tightening torques
Fastening/unfastening components
Component
Fastening/unfastening
Tool
Tightening torque
Mounting rail
Drill hole: Diameter 6.4 mm
Screw M6
Wrench for screw M6
4 Nm to 6 Nm
CFU
Fixing screws on both sides of the
CFU
Screwdriver TORX T15 or
with 3 to 3.5 mm blade width
0.5 Nm
BusAdapter
Screw is located in the BusAdapter
Screwdriver
with 3 to 3.5 mm blade width
0.25 Nm
Cables on the plugs
You can find additional in‐
formation on this in the sec‐
Fixing screw on the screw terminal
Screwdriver
with 3 to 3.5 mm blade width
min 0.4 Nm / max
0.5 Nm
Stranded wires without wire end fer‐
rule with push-in terminal
Screwdriver
approx. 3 mm blade width
Not applicable
CFU PA only: Shield con‐
nection for process cable
(shield terminal)
Spring terminals
Not required
Not applicable
CFU in aluminum housing
Cover screws
M6
(Screws are fitted in the cover)
Screwdriver PH2 or
with 9 mm blade width
2.5 Nm to 3 Nm
Mounting rail
Drill hole: Diameter 6.4 mm
Screw M6
Wrench for screw M6
Pre-assembled
Cable glands
(connection thread of the
cable gland)
M20x1.5:
approved for cable diameters from 7
mm to 13 mm (with reducing insert 4
mm to 8mm)
Wrench for SW24 cable
glands
Preassembled (2.3 Nm)
Cable glands
(cap nuts)
M20x1.5 with gasket ring
Wrench for SW24 cable
glands
1.5 Nm
Functional earth
Functional earth on the housing
(left part of the housing without pene‐
tration of its wall - cross-section acc.
to EN 60079‑14)
Screwdriver 8 mm blade
width
2.5 Nm to 3 Nm
Pressure compensation el‐
ement
M12
Wrench for screw SW17
Pre-assembled (1 Nm)
A.4.3
Cable cross-sections and ferrules
Cables with and without wire end ferrule
Rule for ...
Connections PS<n>
Connections FB<n> and DIQ<n>
Permitted cable cross-sections for solid cables
0.2 to 2.5 mm
2
AWG
*
: 24 to 13
Appendix
A.4 Mounting rules
SIMATIC CFU
186
Commissioning Manual, 08/2019, A5E39252870-AD
Summary of Contents for Simatic CFU
Page 8: ...Table of contents SIMATIC CFU 8 Commissioning Manual 08 2019 A5E39252870 AD ...
Page 10: ...Security information SIMATIC CFU 10 Commissioning Manual 08 2019 A5E39252870 AD ...
Page 16: ...What is a Compact Field Unit SIMATIC CFU 16 Commissioning Manual 08 2019 A5E39252870 AD ...
Page 54: ...Installation 6 4 Removing the CFU SIMATIC CFU 54 Commissioning Manual 08 2019 A5E39252870 AD ...
Page 202: ...Appendix A 10 Contact SIMATIC CFU 202 Commissioning Manual 08 2019 A5E39252870 AD ...
Page 216: ...Glossary SIMATIC CFU 216 Commissioning Manual 08 2019 A5E39252870 AD ...
Page 220: ...Index SIMATIC CFU 220 Commissioning Manual 08 2019 A5E39252870 AD ...