Danfoss VLT Decentral Drive FCD 302 Operating Manual page 16

Electrical Installation
NOTICE
POTENTIAL EQUALISATION
Risk of burst transient, when the ground potential
between the frequency converter and the control system
is different. Install equalizing cables between the system
components. Recommended cable cross-section: 16 mm
(5 AWG).
4 4
CAUTION
PE CONNECTION
The metal pins in the corners of the electronic part and
the holes on the corner of the installation box are
essential for the protective earth connection. Make sure
that they are not loosened, removed, or violated in any
way. Tightening torque requirement is 3 Nm. (26 in-lb).
See Illustration 4.1.
Grounding shielded cable
Grounding clamps are provided for motor and control wiring (see Illustration 4.2).
Illustration 4.2 Grounding for Motor and Control Wiring (Small Unit)
14
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VLT Decentral Drive FCD 302
2
Illustration 4.1 PE Connection between the Installation Box
and the Electronic Part
NOTICE
The external grounding terminal is available as an
accessory (part no: 130B5833).
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