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
Hi DC Volts : 66.0 * * Press a Key * *
DC VOLTS LOW
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.
Lo DC Volts : 38.0 * * Press a Key * *
AC VOLTS HIGH
AC Volts Hi : 0
* * Press a Key * *
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.
INVERTER OVERLOAD
Inverter O/L : 0
* * Press a Key * *
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.
TRANSFORMER TOO HOT
TX Too Hot : 122C * * Press a Key * *
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.
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