PI PICMA P-840, User Manual, Page: 15 / 34

Figure 5: No lateral forces or torques
A: Wrong: Shearing force due to lateral force
B: Right: Axial loading of the actuator
C: Wrong: Torsion due to torque
6.2 Mounting the P-840 and Connecting to a Protective Earth
Conductor
The protective earth for the P-840 is connected as follows:
■ Mounting hole in the base of the P-840
■
Suitable, conductive screw
■
The underlying surface connected to the protective earth conductor
Tools and Accessories
■
Suitable protective earth conductor: Cable cross section
≥
0.75 mm
2
■
Electrically conductive screw of suitable size and length (see "Dimensions" (p. 31) )
■ Open-end wrench for holding the base (p. 11) of the P-840 (see "Dimensions" (p. 31) for
across flats size)
■
Suitable screwdriver
Requirements
✓
You have read and understood the general safety instructions (p. 8) .
✓
You have read and understood the section "Avoiding Mounting Errors" (p. 14) .
✓
The P-840 is not connected to the electronics.
✓
The P-840 is discharged (p. 22) .
✓
You have provided a suitable surface for mounting the P-840:
■
The underlying surface has suitable mounting holes (p. 31) .
■
The underlying surface is connected to a protective earth conductor.
■ The underlying surface is sufficiently conductive to ensure proper function of the
protective earth conductor.
✓
You have accounted for the space required to route cables without bending and
according to regulations.
6 INSTALLATION P840M0001EN
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1/29/2021
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