Sierra Monitor Corporation IZS31 - Manual (Page 22)

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6. LED display
„ POWER LED ・・・ The power supply input and the connection of the sensors are displayed.
LED name Functions
MAIN Lights up when the power supply is applied. (Green)
(Flashes when wrong power supply is applied. ） POWER
SNSR Goes out.
„ ION LED ・・・ The discharged ion polarity is displayed.
LED name Functions
＋ Lights on when plus ions are generated.(Orange)
OK Goes out.
ION
－ Lights on when minus ions are generated.（Blue）
„ ALARM LED ・・・ Failure of the ionizer is displayed.
LED name Functions
HV Lights up when overcurrent is applied to the electrode needle. （Red）
SNSR Goes out.
ALARM
NDL
CHECK Goes out.
7. Alarm
Type of alarm Description How to reset
Abnormal high voltage Notifies when overcurrent such as high voltage
leakage occurs. The ion-discharge-output is
stopped, HV ALRM sets off and output the
signal for failure. Turn off the power supply to solve the problem.
Once it’s solved, apply the power supply again.
Or turn on and off the discharge-stop signal.
CPU failure Notifies that CPU fails due to noise. All LEDs
Flashes, and the signal for CPU failure is
output. Turn off the power supply to solve the problem.
Once it’s solved, apply the power supply again.
Or turn on and off the discharge-stop signal.
8. Timing chart
„ Timing chart with a normal operation
ON
Input OFF
ON (Operation)
Input OFF
ON (Discharge)
OFF
Power supply DC24V
Discharge-stop signal
State of ion discharge