Sierra Monitor Corporation IZS31 User Manual
15
9. 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.
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.
Once it’s solved, apply the power supply again.
Or turn on and off the discharge-stop signal.
Sensor failure
Notifies that the feed back sensor doesn’t work
properly. SNSR ALARM lights up, and the
properly. SNSR ALARM lights up, and the
signal for sensor 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.
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.
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.
Once it’s solved, apply the power supply again.
Or turn on and off the discharge-stop signal.
Electrode needle
maintenance
maintenance
Notifies when the maintenance of the electrode
needle is necessary. NDL CHECK ALARM
lights up, and the maintenance output signal is
output.
lights up, and the maintenance output signal is
output.
Turn off the power supply and clean the
electrode needle. Then apply the power
supply.
electrode needle. Then apply the power
supply.
10. Timing chart
Timing chart with a normal operation
Timing chart when the dirt on the electrode needle is detected
・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.
Therefore, the workpieces should not be mounted when the detection is executed.
ON and OFF status will be changed depending on the situation
ON
Input
OFF
ON
OFF
ON
Output
OFF
ON （SW ON）
Input
OFF
ON （SW ON）
Output
OFF
ON
(LED)
Blink
LED
OFF
Power supply
DC24V
DC24V
Discharge stop
signal
signal
Maintenance indication
(With NDL CHECK ALARM)
Completion signal for
Static charge
Static charge
Maintenance
start-up signal
start-up signal
Maintenance
output signal
output signal
Contamination detecting of electrode
100ms or more
2s
30V
0V
ON
Input
OFF
ON
(Opration)
OFF
ON
(discharge)
OFF
ON
(Output)
OFF
ON
(LED)
LED
OFF
Sensor monitor output
Charged condition
（with ION LED）
Charged condition of the work
Power supply DC24V
Discharge-stop signal
Completion signal for
static charge elimination
static charge elimination
Input
Output
Output
Input
(discharge)
(Operation)