3.7 Main Circuit Wiring
■ Ground Wiring
Follow the precautions to wire the ground for one drive or a series o f drives.
W ARNING!
W hen u sin g an E M C filter, the le a k a g e c u rre n t e x c e e d s 3 .5 m A. Therefore, a c c o rd in g to IE C 6 1 8 0 0 -5 -1 , a t le a s t o n e o f the
co n d itio n s b e lo w m u s t b e satisfie d:
a) The c ro s s -s e c tio n o f the p ro te c tiv e e a rth in g c o n d u c to r m u s t b e a t le a s t 10 m m 2 (Cu) o r 16 m m 2 (Al).
b) The p o w e r s u p p ly m u s t b e d is c o n n e c te d a u to m a tic a lly in case o f d is c o n tin u ity o f the p ro te c tiv e e a rth in g conductor.
W ARNING!
E le c tric a l S h o c k H azard. A lw a y s use a g ro u n d wire tha t c o m p lie s with te c h n ic a l sta n d a rd s on e le c tric a l e q u ip m e n t a n d
lo c a l in s ta lla tio n reg ulation s. M in im ize the le n g th o f the g ro u n d wire. Im p ro p e r e q u ip m e n t g ro u n d in g m a y ca u se d a n g e ro u s e le c tric a l
p o te n tia ls on e q u ip m e n t chassis, w h ich c o u ld re s u lt in de a th o r s e rio u s injury.
W ARNING!
E le c tric a l S h o c k H azard. B e sure to g ro u n d the drive g ro u n d term inal. Im p ro p e r e q u ip m e n t g ro u n d in g m a y cause
d a n g e ro u s e le c tric a l p o te n tia ls on e q u ip m e n t chassis, w h ich c o u ld re s u lt in de ath o r s e rio u s injury.
N O TICE:
D o n o t sh a re the g ro u n d w ire w ith o th e r d e vice s such as w e ld in g m a c h in e s o r la rg e -c u rre n t e le c tric a l equipm en t. Im p ro p e r
e q u ip m e n t g ro u n d in g c o u ld re s u lt in drive o r e q u ip m e n t m a lfu n c tio n d u e to e le c tric a l inte rfe ren ce.
N O TICE:
W hen u s in g m o re tha n on e drive, g ro u n d m u ltip le d rive s a c c o rd in g to in stru ction s. Im p ro p e r e q u ip m e n t g ro u n d in g co u ld
re s u lt in a b n o rm a l o p e ra tio n o f drive o r equipm ent.
Refer to
Figure 3.16
when using multiple drives. Do not loop the ground wire.
OK
OK
Not OK
F ig u r e 3 .1 6 M u ltip le D riv e W irin g
■ Wiring the Main Circuit Terminal
W ARNING!
E le c tric a l S h o c k H azard. S h u t o f f the p o w e r s u p p ly to the drive b e fo re w irin g th e m a in c irc u it term inals. F a ilu re to c o m p ly
m a y re s u lt in de a th o r s e rio u s injury.
Wire the main circuit terminals after the terminal board has been properly grounded.
Models CIMR-LD2A0018 through 2A0075 and 4A0009 through 4A0039 have a cover placed over the DC bus and
braking circuit terminals prior to shipment to help prevent miswiring. Use wire cutters to cut away covers as needed for
terminals.
A - P r o t e c ti n g C o v e r
F ig u r e 3 .1 7 P r o te c ti n g C o v e r to P r e v e n t M isw irin g (CIM R-LIII2A 0047)
■ Main Circuit Connection Diagram
Refer to Main Circuit Connection Diagram on page 49
when wiring terminals on the main power circuit o f the drive.
W ARNING!
F ire H azard. The b ra k in g re s is to r c o n n e c tio n te rm in a ls are B1 a n d B2. D o n o t c o n n e c t b ra k in g re s is to rs to a n y o th e r
term inals. Im p ro p e r w irin g c o n n e c tio n s c o u ld c a u se the b ra k in g re s is to r to o v e rh e a t a n d c a u se de a th o r seriou s in ju ry b y fire. F a ilu re to
c o m p ly m a y re s u lt in d a m a g e to the b ra k in g c irc u it o r drive.
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
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