EEC 6900S Series, Руководство пользователя

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18
4.3 Displayed Messages
Below are the descriptions of error messages that may occur at abnormal conditions:
At any abnormal conditions, there are several error messages to be indicated on the display
LEDs. Thereafter the output will be disabled and the alarm will sound. The LED
Indicator will also light up at the same time. If the indicator is blinking that shows an
abnormal operation is encountered, thereby the output voltage will be cut off immediately.
By pressing the key will reset the audible alarm, an error message is indicated.
All error messages are occurred at any abnormal conditions and therefore
must be recorded. Check the cause of error to ensure the problem is
eliminated before restarting the operation, or contact Extech Electronics Co. or our official
distributors for further assistance.
If the heat sink of the instrument itself has exceeded 130

C, the
Frequency display will indicate “OtP”. This shows that the heat sink is
overheated and thus the alarm will sound. Consequently, the
LED indicator will blink and the Voltage or Current displays will show the
overloaded voltage or current respectively.
They will occur Over Current Protection that output circuit is short
and the system will self protect within 1 second or the output current
has exceeded 110% of maximum current rating for 1 second. At this
time, the Frequency display will indicate “OCP” and the alarm will
sound. Consequently, the LED indicator will blink and the Voltage or Current
displays will show the overloaded voltage or current respectively.
They will occur Over Power Protection that output power has
exceeded 125% of maximum power rating and the system will self
protect within 0.5 second or the output power has exceeded 110% of
maximum power rating for 1 second. At this time, the Frequency display will indicate “OPP”
and the alarm will sound. Consequently, the LED indicator will blink and the Voltage
or Current displays will show the overloaded voltage or current respectively.
If OCP and OPP are occurred at the same time, OCP will be activated first.
If the reading of output current has exceeded the setting of current,
the Frequency display will indicate “HI-A” and the alarm will sound.
Consequently, the LED indicator will blink and the Voltage
or Current displays will show the overloaded voltage or current respectively.
WARNING