Yaskawa V74X Drives - Manual (Page 27)

27
Peripheral
Devices Section 5
Figure 1-3. Customer Connection Diagram For Isolation Transformers, Input Reactors, Input RFI Filters,
DC Reactors, Output Reactors and Output RFI Filters
ISOLATION
TRANSFORMER
INPUT
REACTOR
INPUT
RFI FILTER
L3
L2
L1
H3
H2
H1
X3
X2
X1
C1
B1
A1
C2
B2
A2
C1(L3)
B1(L2)
A1(L1)
(L3)C2
(L2)B2
(L1)A2
L
I
N
E L
O
A
D
CUSTOMER’S
3fl A.C. LINE
POWER
SUPPLY
EARTH GROUND
SEE NOTE 2
(G)
RF NOISE
FILTER
SEE NOTE 5
SEE NOTE 3
L3 L2 L1
T3 T2 T1
INPUT
AC DRIVE
OUTPUT
EARTH GROUND
SEE NOTE 1
SEE NOTES 3, 4
OUTPUT
REACTOR
OUTPUT
RFI FILTER
TO CASE
EARTH
GROUND
SEE NOTE 2
SEE NOTES 3, 4
SEE NOTES 3, 4
A.C. MOTOR
1 2 3
4 5 6
IN
OUT
T3 T2 T1
C1 B1 A1
C2 B2 A2
EARTH GROUND
SEE NOTE 2
SEE NOTE 6
DC
REACTOR
+ 1
+ 2
L31 L21 L11
NOTES
1. Connect Drive ground terminal or panel to
earth ground. Always use low impedance
paths and connections.
2. Mount input and output RFI filters physically
as close to the Drive as possible (on the
same panel, if possible). Filters should have
a solid connection from filter case or ground
terminal to Drive panel or ground terminal
(conduit with good bare metal to bare metal
connections may serve as the path). If
multiple input or output RFI filters are used,
they must be wired in parallel.
3. Shield conductors with metallic conduit.
4. Connect output conduit in a manner that
allows it to act as an unbroken shield from the
Drive panel to the motor casing.
5. RF noise filter (different from RFI filter) part
no. 05P00325-0023 is a delta wye capacitor
network which is wired in parallel with the
Drive input terminals. On the smaller Drives
with die cast chassis, it must be mounted
externally. On the larger Drives with sheet
metal chassis, it may be mounted inside the
area where the input power wiring enters the
Drive. On units equipped with bypass, it may
be wired to the primary side of the circuit
breaker and mounted to the bypass panel or
sidewall.
6. Connection points:
Drive w/o Bypass Drive w/ Bypass
Input L1, L2, L3 Ckt Brkr L1, L2, L3
Output T1, T2, T3
Unwired side of
Overload relay
IG.V7.01_new format.qxd:IG.V7.01_new format.qxd 8/21/07 2:24 PM Page 27