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D. Buzzer outlet: The buzzer is located inside the UNIT. When abnormal conditions occur, a clearly
audible sound will be issued to warn the user to check the UNIT. The buzzer will beep under any the
following conditions:
1. INVERTER IS OVERLOADED
> 110% -- beeps once every 3 seconds
> 125% -- beeps once every second
> 150% -- beeps twice every second
2. INVERTER IS SHORT CIRCUITED -- beep continuously
3. FUSE BLOWN -- beep continuously
4. HEAT SINK OVER TEMPERATURE -- beep continuously
5. HIGH DC SHUTDOWN -- beep continuously
6. EMERGENCY STOP -- beep continuously
The buzzer will also beep once every time the inverter is switched on or off to acknowledge the user.
E. RECTIFIER LED(on the block diagram): the rectifier is operating normally. This means the rectifier AC
voltage is within the range specified, the rotation sequence of three phases is correct, the rectifier
breaker is closed, and there is no high DC voltage to the inverter.
F. INVERTER LED(on the block diagram): the inverter is switched on and it is running normally.
G. AC OUTPUT LED(on the block diagram): there is AC power present at the output terminal. This is an
important indication to the user that AC power is available at the output.
H. UP key: (on LCD DISPLAY block) It moves the cursor one item upward when items are being
selected. It also changes the number/character forward when data or parameters of the UNIT are
being entered.
I.
DOWN key: (on LCD DISPLAY block) It moves the cursor one item downward when items are being
selected. It also changes the number/ character backward when data or parameters of the UNIT are
being entered.
J. ENTER key:
(on LCD DISPLAY block)
number/character that was selected.
K. ON key: (on INVERTER control block) It is necessary to press this switch and the INVERTER control
key simultaneously to switch the inverter on.
L. OFF key: (on INVERTER control block)
control key simultaneously to switch the inverter off.
M. INVERTER key: (on INVERTER control block)
simultaneously, the inverter will be switched on. Similarly, when this key is pressed with the inverter
OFF key simultaneously, the inverter will be switched off. The redundant action required prevents
inadvertently energizing an unwanted mode.
It selects the previous page.
It is necessary to press this switch and the INVERTER
When this key is pressed with the inverter ON key
6
It also enters the
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