Sierra Monitor Corporation IZS31 LED display, Alarm, Timing chart, Power supply DC24V

6.LED display

„POWER LED ・・・ The power supply input and the connection of the sensors are displayed.

LED name		Functions
POWER	MAIN	Lights up when the power supply is applied. (Green)
		(Flashes when wrong power supply is applied. ）
	SNSR	Goes out.

„ION LED ・・・ The discharged ion polarity is displayed.

LED name		Functions
ION	＋	Lights on when plus ions are generated.(Orange)
	OK	Goes out.
	－	Lights on when minus ions are generated.（Blue）

„ALARM LED ・・・ Failure of the ionizer is displayed.

LED name		Functions
ALARM	HV	Lights up when overcurrent is applied to the electrode needle. （Red）
	SNSR	Goes out.
	NDL	Goes out.
	CHECK

7. Alarm

Type of alarm	Description
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.
CPU failure	Notifies that CPU fails due to noise. All LEDs
	Flashes, and the signal for CPU failure is
	output.

How to reset

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.

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
Power supply DC24V	Input	OFF
		ON	(Operation)
Discharge-stop signal	Input	OFF
		ON	(Discharge)
State of ion discharge		OFF

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