Nidec H300 - Grounding Hardware; Installation of Grounding Clamp

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HVAC Drive H300 97
Issue Number: 3
4.11.1 Grounding hardware
The drive is supplied with a grounding bracket and grounding clamp to
facilitate EMC compliance. They provide a convenient method for direct
grounding of cable shields without the use of "pig-tails”. Cable shields
can be bared and clamped to the grounding bracket using metal clips or
clamps
1
(not supplied) or cable ties. Note that the shield must in all
cases be continued through the clamp to the intended terminal on the
drive, in accordance with the connection details for the specific signal.
1
A suitable clamp is the Phoenix DIN rail mounted SK14 cable clamp
(for cables with a maximum outer diameter of 14 mm).
• See Figure 4-23, Figure 4-24 and Figure 4-25 for details on installing
the grounding clamp.
• See Figure 4-26 for details on installing the grounding bracket.
Figure 4-23 Installation of grounding clamp (size 3 and 4)
Loosen the ground connection nuts and slide the grounding clamp in the
direction shown. Once in place, the ground connection nuts should be
tightened with a maximum torque of 2 N m (1.47 lb ft).
Figure 4-24 Installation of grounding clamp (size 5)
Loosen the ground connection nuts and slide the grounding clamp down
onto the pillars in the direction shown. Once in place, the ground
connection nuts should be tightened with a maximum torque of 2 N m
(1.47 lb ft).
Figure 4-25 Installation of grounding clamp (size 6)