Isolating Main Power From Ground - Automation Direct DURApulse GS4 User Manual

i m p
solaTing ain oWer from
WARNING: I
f the poWeR dIstRIbutIoN system supplyING the
jumpeR must be Removed
WARNING: I
f the poWeR dIstRIbutIoN system supplyING the
(It)
oR AN AsymmetRIc
If the power distribution system supplying the GS4 drive is a floating ground system (IT) or an
asymmetric ground system (TN), the RFI jumper must be removed. Removing the RFI jumper
disconnects the internal RFI filter capacitor between the drive's frame and circuits to avoid
damaging those circuits and to reduce ground leakage current.
Important points regarding ground connection
• To ensure the safety of personnel, proper operation, and to reduce electromagnetic radiation, the
GS4 drive must be properly grounded during installation�
• The diameter of the cables must meet the size specified by applicable codes and regulations�
• The grounding cable must be connected to the ground of the GS4 drive to meet safety
regulations�
• The grounding cable can be used as the ground for equipment only when the aforementioned
points are met�
• When installing multiple GS4 drives, do not connect the grounds of the AC motor drive in
series� Instead, utilize a single-point grounding scheme (as shown below), or provide individual
grounding rods for each GS4 drive�
Pay particular attention to the following WARNINGS:
WARNING: d
o Not Remove the
WARNING: c
uttING the
. G
cApAcItoR Ap dIschARGe mAy occuR oNce the tRANsIeNt voltAGe exceeds
WARNING: t
he
WARNING: t
he
WARNING: W
heN coNductING A hIGh voltAGe test to the eNtIRe fAcIlIty
motoR must be dIscoNNected If leAkAGe cuRReNt Is too hIGh
DuRA
GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
pulse
g
round
.
- (tN),
GRouNd system
Ground terminals
Best wiring setup for ground wires
RfI
jumpeR WhIle poWeR Is ApplIed to the
RfI -
shoRt cIRcuIt cAble WIll Also cut off the coNductIvIty of the
RfI
jumpeR mAy Not be Removed If the mAIN poWeR Is A GRouNded poWeR system
RfI
jumpeR mAy Not be Removed WhIle coNductING hIGh voltAGe tests
Chapter 2: Installation and Wiring
Gs4
dRIve Is sINGle phAse
Gs4
dRIve Is A floAtING
RfI must be Removed.
the jumpeR
.
, RfI
the
-
GRouNd system
Gs4 .
dRIve
1000v.
.
.
,
the mAIN poWeR ANd the
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