Sierra Monitor Corporation IZS31 operation manual Alarm, „Timing chart with a normal operation

9. Alarm

Type of alarm	Description	How to reset
Abnormal high voltage	Notifies when overcurrent such as high voltage	Turn off the power supply to solve the problem.
	leakage occurs.The ion-discharge-output is	Once it’s solved, apply the power supply again.
	stopped, HV ALRM sets off and output the signal	Or turn on and off the discharge-stop signal.
	for failure.
Sensor failure	Notifies that the auto balance sensor doesn’t	Turn off the power supply to solve the problem.
	work properly. SNSR ALARM lights up, and the	Once it’s solved, apply the power supply again.
	signal for sensor failure is output.	Or turn on and off the discharge-stop signal.
CPU failure	Notifies that CPU fails due to noise. All LEDs	Turn off the power supply to solve the problem.
	Flashes, and the signal for CPU failure is output.	Once it’s solved, apply the power supply again.
		Or turn on and off the discharge-stop signal.
Electrode needle	Notifies when the maintenance of the electrode	Turn off the power supply and clean the
maintenance	needle is necessary. NDL CHECK ALARM lights	electrode needle. Then apply the power supply.
	up, and the maintenance output signal is output.

10.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

„Timing chart when the dirt on the electrode needle is detected／adjust ion balance

（ａ）With auto balance sensor

①Manual operation

			ON
Power supply DC24V		Input	OFF
			ON	(Operation)
Discharge-stop signal		Input	OFF
Completion signal for		Output	ON	(Contamination detecting of electrode needle / Ion balance is being adjusted.)
			OFF				2s
Static charge elimination
Maintenance			ON	(SW ON）	100ms or more
Start-up signal		Input	OFF
Maintenance			ON	(SW ON）
Output signal		Output OFF
Maintenance indication			ON	(Lighting）		Blink
(NDL CHECK ALARM)		LED	OFF
Ionizer	Contamination detecting					Detection is executed when the
	of electrode needle					maintenance level selecting switch,
operation						H, M or L is selected.
	Adjust ion balance

②Auto operation

		Input	ON
Power supply DC24V			OFF
Discharge-stop signal			ON	(Operation)
		Input	OFF
Completion signal for		Output	ON	(Contamination detecting of electrode needle)
			OFF			2s
Static charge elimination
Maintenance			ON	(SW ON）	100ms or more
		Input	OFF
Start-up signal
Maintenance			ON	（SW ON）
Output signal		Output	OFF
Maintenance indication			ON	(Lighting）	Blink
(NDL CHECK ALARM)		LED	OFF
	Contamination detecting					Detection is executed when the
Ionizer	of electrode needle					maintenance level selecting switch,
operation						H, M or L is selected.
	Adjust ion balance

（ｂ）W/o auto balance sensor

			ON
Power supply DC24V		Input	OFF
			ON	(Operation)
Discharge-stop signal		Input	OFF
Completion signal for			ON	(Contamination detecting of electrode needle)
Static charge eliminationOutput OFF						2s
Maintenance			ON	（SW ON）	100ms or more
Start-up signal		Input	OFF
Maintenance			ON	（SW ON）
Output signal		Output OFF
Maintenance indication			ON	（Lighting）	Blink
(NDL CHECK ALARM)		LED	OFF
Ionizer	Contamination detecting					Detection is executed when the
	of electrode needle
						maintenance level selecting switch,
						行）
operation						H, M or L is selected.

Adjust ion balance

ON and OFF status will be changed depending on the situation.

・The completion signal for static charge elimination is output while the dirt on the electrode needle is being detected

・Because ions are discharged from the ionizer when the electrode needle is being detected, the workpiece might be charged. Therefore, the workpieces should not be mounted when the detection is executed.

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