7. Displayed Messages
During any abnormal conditions, there are several error messages that could be
indicated in the display. When an abnormal condition occurs the output will
disable and the alarm will sound. The Test/Reset LED indicator will also begin
flashing. Pressing the Test/Reset key will reset the audible alarm and the
abnormal condition will be displayed.
All error messages occur in abnormal conditions and
therefore must be recorded. Check the cause of the error
to ensure the problem is eliminated before restarting the
operation, or contact Associated Power Technologies, Inc., or our official
distributors for further assistance.
Over Temperature Protection
Output Voltage Protection
Amplifier Shutdown Protection
Reverse Current Protection
LCD Temperature Protection
7.1 OTP – Over Temperature Protection
Displayed if the heat sink of the instrument has exceeded 130º C. The voltage
and current displays will show the overloaded voltage or current respectively.
The LED indicator for the Test/Reset key will be blinking.
7.2 OCP – Over Current Protection
Displayed if the output current has exceeded 110% of maximum current rating for
greater than 1 second or there is a short circuit for less than 1 second. The LED
indicator for the Test/Reset key will be blinking.
7.3 OPP – Over Power Protection
Displayed if the output power has exceeded 110% of maximum power rating for 1
second. The LED indicator for the Test/Reset key will be blinking.
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