Using the Front Panel Keypad
In
v
e
rt
er Mounting
and Installation
2–26
Monitoring Parameters with the Display
After using the keypad for parameter editing,
it’s a good idea to switch the inverter from
Program Mode to Monitor Mode and close
the panel door (puts the keys for parameter
editing out of sight). This will also turn out
the PRG LED, and the Hertz or Ampere LED
indicates the display units.
For the powerup test, monitor the motor speed indirectly by viewing the inverter’s output
frequency. The
output frequency
must not be confused with
base frequency
(50/60 Hz)
of the motor, or the
carrier frequency
(switching frequency of the inverter, in the kHz
range). The monitoring functions are in the “D” list, located near the top left of the
“Keypad Navigational Map” on page 2–23
Output frequency (speed) monitor
- Resuming the keypad programming from the
previous table, follow the steps in the table below.
When the
d
0 1
function code appeared, the PRG LED went OFF. This confirms the
inverter is no longer in programming mode, even while you are selecting the particular
monitoring parameter. After pressing the Function key, the display shows the current
speed (is zero at this point).
Running the Motor
If you have programmed all the parameters up to this point, you’re ready to run the
motor! First, review this checklist:
1.
Verify the Power LED is ON. If not, check the power connections.
2.
Verify the Run Key Enable LED is ON. If not, review the programming steps to find
the problem.
3.
Verify the PRG LED is OFF. If it is ON, review the instructions above.
4.
Make sure the motor is disconnected from any mechanical load.
5.
Turn the potentiometer to the MIN position (completely counterclockwise).
6.
Now, press the RUN key on the keypad. The RUN LED will turn ON.
7.
Slowly increase the potentiometer setting in clockwise fashion. The motor should
start turning when the indicator is in the 9:00 position and beyond.
8.
Press the STOP key to stop the motor rotation.
Action
Display
Func./Parameter
Press the
key.
“A” Group selected
Press the
key three times.
Output frequency selected
Press the
key.
Output frequency displayed
Hz
POWER
A
RUN
PRG
RUN
STOP
RESET
MIN
MAX
HITACHI
5 0.0
FUNC.
A - -
1
d
0 1
FUNC.
0.0
