Q9 ASD Quick Start Guide
5
Conductor Routing and Grounding
•
Use separate metal conduits for routing the input power, output power, and control circuits.
•
A separate ground cable should be run inside of the conduit with the input power, output power,
and control circuits.
•
DO NOT
connect
CC
to earth ground.
•
Use
IICC
terminal as the return for the
VI/II
(V/I) input.
•
Always ground the ASD to prevent electrical shock and to help reduce electrical noise.
•
It is the responsibility of the person installing the ASD or the electrical maintenance personnel to
provide proper grounding and branch circuit protection in accordance with the
2008 NEC
and any
applicable local codes.
— T h e M e t a l O f C o n d u i t I s N o t A n A c c e p t a b l e G r o u n d —
Grounding Capacitor Switch
The ASD is equipped with leak reduction capacitors which are used to reduce the EMI leakage via the
3-phase power-input circuit and for compliance with the
Electromagnetic Compatibility Directive
(EMC).
The effective value of the capacitor may be increased, reduced, or removed entirely via the
Selector
Switch
,
Switching Bar
, or the
Switching Screw
— the type used is typeform-specific.
The
Grounding Capacitor Switch
allows the user to quickly change the value of the leakage-reduction
capacitance of the 3-phase input circuit without the use of any tools.
See the section titled
Power Connection Requirements on pg. 13
for more on the
Grounding Capacitor
.
See figures
4
,
5
,
6
, and
Figure 7 on pg. 15
for an electrical depiction of the leakage-reduction
functionality of the
Grounding Capacitor
and the methods used to set the capacitance value.
WARNING
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