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Addendum to the CFW-09 Manual
I. GENERAL INFORMATION
This addendum has information about the CFW-09HD line variable frequency drive with DC
link power supply.
1. CFW-09 DC LINK POWER SUPPLY – HD LINE
- The CFW-09HD line of variable frequency drives with DC link power supply has the same
characteristics in terms of mechanical installation, functions, programming and performance
as the standard CFW-09 line.
- Up to size 5, it is not necessary to use an HD for a DC link power supply. Just supply a standard
drive by the DC link with an external pre-charge circuit.
- Models sizes 6 and up, have a pre-charge circuit and internal modifications.
2. SIMPLIFIED CFW-09HD BLOCK DIAGRAM
Figure 1 presents the simplified CFW-09HD block diagram, for sizes 6 and up.
Pre-charge Circuit
XC1A:
27
KA1
F
220V Command
CFW-09HD Line
Pre-charge and Ventilation
Supply
L 1
L 2
L 3
X1
R S T
28
X33:1
3
21
A1
A2
22
N
For interlocking with a
contactor winding or
circuit breaker minimum
Figure 1 – Simplified CFW-09HD block diagram
AC Link
Supply
X1
+UD
-UD
X1 U V W PE
13
14
R S T
M
3~
winding
3
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