VFD68 Variable Frequency Drives (575 VAC)
20
Setup and Adjustment
Correspondences Between Digital and Actual Characters
The actual alphanumeric characters correspond to the following digital characters displayed on the operation
panel:
Operation Modes
Mode of Operation Icons
The VFD68 Drive mode of operation is indicated by the mode of operation icons (labeled PU and EXT) on the
drive’s operation panel (Figure 13).
PU Mode:
The Parameter Units (PU) mode is manual control mode. In PU mode, the drive and motor are
completely controlled using the buttons and the setting dial on the drive user interface. No external analog
signals or network signals control the drive operation. The PU mode is typically used to set up, test, and
troubleshoot the drive and motor operation using controlled input signal values.
EXT Mode:
In the External (EXT) mode, the drive and motor respond to a signal or signals from one or two
(external) analog input signal devices such as pressure transducers or analog controllers. This is the typical
mode of operation for the drive when it controls a condenser fan or other three-phase HVACR motor
application.
PU/EXT Mode:
In PU/EXT mode, the drive responds to the connected external signal devices and the drive
setup values can be edited. The PU/EXT mode is typically used to set up your drive for initial operation, or to
adjust setup parameters on an operating application.
MON Mode:
Shows motor speed represented as frequency (Hz) or RPM.
Display Code
Parameter Setting Mode:
When the display shows
Pr..
, the VFD68 Drive displays parameter codes and
parameter setting values.
Actual
Digital
0
1
2
3
4
5
6
7
8
9
Actual
Digital
A
B
C
E
F
G
H
I
J
L
D
Actual
Digital
M
N
O
o
P
T
U
V
r
-
S
