P9 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 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
V/I
input.
•
Always ground the unit to prevent electrical shock and to help reduce electrical noise.
•
If the ASD is being used in an ungrounded system (floating system) or in an asymmetrically
grounded system, the EMI filter must be disconnected or removed. The ASD may be damaged if
the EMI filter is used.
•
It is the responsibility of the ASD installer/maintenance personnel to provide proper grounding and
branch circuit protection in accordance with the
NEC
and any applicable local codes.
— T h e M e t a l 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 Setting Precaution
If operating using an ungrounded 3-phase power source or within a high-resistance grounding
system, the
Grounding Capacitance
must be set to
Small
or
Out
(typeform-specific) as
shown on
. If set to
High
, a system malfunction, component failure, or fire may result.
Grounding Capacitor Switching
The ASD is equipped with noise 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 capacitance of the
3-phase input circuit without the use of tools.
See the section titled
.
See figures
,
,
for an electrical depiction of the leakage-reduction functionality of
the
and the methods used to set the capacitance value.
WARNING
WARNING
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