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14
OVERLOAD SHUTDOWN AND ALARMS
The SA41 has eight alarm and overload conditions. These result from high or low battery volts, high
AC volts, AC output overloaded, transformer too hot, heatsink too hot, either of the two alarm inputs
being active, or low battery charge. If any of these conditions occur, a message will be displayed. If
there is more than one alarm condition the display will alternate between messages.
The alarm message will remain on the display until a key is pressed, even if the alarm condition ends.
(i.e. after a high voltage condition the battery volts comes back down again) This allows you to
determine the cause of the shutdown even if the inverter comes on again before you are able to read the
display. To reset the inverter after it has shutdown, set the inverter Status to RESET, and then back to
STANDBY. (See page 5.)
DC VOLTS HIGH
DC VOLTS LOW
AC VOLTS HIGH
INVERTER OVERLOAD
TRANSFORMER TOO HOT
Hi DC Volts : 66.0
* * Press a Key * *
Lo DC Volts : 38.0
* * Press a Key * *
AC Volts Hi : 0
* * Press a Key * *
Inverter O/L : 0
* * Press a Key * *
TX Too Hot : 122C
* * Press a Key * *
This message is displayed and the inverter shuts down if the battery voltage
rises above the ‘Hi DC Volts’ setting. The inverter will automatically
restart when the battery voltage drops below this value. The present battery
voltage is also displayed.
This message is displayed and the inverter shuts down if the battery voltage
drops below the ‘Lo DC Volts’ setting for more than 10 seconds. The
inverter will automatically come on again when the battery voltage rises
above the ‘Lo DCV ON’ voltage or if the inverter is manually reset (via the
STATUS display, see page 5). The present battery voltage is also displayed.
If a system fault causes the AC voltage to go too high, then this message is
displayed.
An AC current overload or a short circuit on the AC output will cause the
inverter to shut down and display this message. If the shutdown was due to
an overload, the SA41 will automatically reset after 1 minute, or when a
key is pressed. If the shutdown was due to a short circuit, the SA41 will
have to be reset (via the STATUS display, see page 5) on the front panel.
If the transformer reaches its maximum operating temperature, the SA41
will shut down to protect the internal components. The SA41 will restart
again only when the temperature drops to a safe level. The present
temperature of the transformer is also displayed.