Keyence SJ-M300 User Manual download pdf (Page 9)

3-1

SJ-M Series Operations

3 Press to end ion balance setup.

Holding down for about

one second when setting the

ion balance clears the preset

ion balance zero point and

returns the ion balance to its

default setting.

Blink fast

The mode changes to the Run mode.

After you have finished setting up the ion balance, the ion

balance indicator will blink fast for about max. three minites,

indicating that the ion balance setup is being written to memory.

After you have finished setting up the ion

balance, do not change the ambient

environment for about 1 minute. If you do, the

zero point sometimes cannot be set accurately.

Note

During this operation,

the ion monitor indication

moves towards both ends

of the display.

3-2 Ion Monitor Functions

This section describes the ion monitor functions of the SJ-M Series.

Ion monitor functions are enabled in the Run mode.

Ion Monitor Functions

The charged level of the target object and the level of ions generated from the static elimination head

are indicated on the ion monitor.

The ion monitor indication can be switched by .

■ Charge monitor

This monitor indicates the charged and decharged

states of the target object.

The indication of this monitor fluctuates towards the

+ and – sides according to the charged level. The

further the indication is away from the center LED,

the larger the charged level. When static elimination

is completed, the indication returns to the center

LED so that you can easily tell how static

elimination is progressing.

The ion balance indicator lights when the charge

monitor is operating.

■ Ion level monitor

This monitor indicates the level of ions being

generated by the Static Elimination Head.

The level of plus ions being generated is indicated

on the upper side, while the level of minus ions is

indicated on the lower side. The further the

indication is away from the center LED, the larger

the level of ions. In a state where ions are being

sufficiently generated, both ends of this monitor light

(green).

The ion balance indicator lights when the ion level

monitor is operating.

Ion level monitor indication is not available when I.C.C. is OFF.

When I.C.C. is OFF, the ion balance indicator and ion level indicator light.

Red

Orange

Green

Orange

Red

Green

Orange

Red

Orange

Green

Max.

+ ion

Min.

- ion

Max.

Note

3-3 Alarm Output Functions

This section describes the alarm output functions of the SJ-M Series.

Alarm Output Functions

■ Alarm output function (ALARM)

The alarm indicator blinks (red) and an alarm signal

(control output (N.C.)) is output, for example, when

internal circuits are damaged or abnormal discharging

occurs. When an alarm signal is output, static

elimination is forcibly stopped.

Alarm output turns ON even in a static elimination

stopped state (including forced static elimination stop).

■ Ion level alarm output function (ION LEVEL)

The ion level alarm indicator lights and an alarm signal

(control output (N.O.)) is output when the level of

generated ions drops due to a dirty or worn electrode

probe, for example. When an alarm signal is output,

static elimination is not stopped.

Alarm output can be adjusted in three stages

according to the level of ions generated.

The default setting for the ion level alarm sensitivity

setting is Low.

The ion level alarm serves as a guideline for learning

when to perform maintenance on the electrode probe.

As static elimination is continued, be sure to turn the

power OFF before starting maintenance on the

electrode probe.

The ion level alarm output function is enabled in the

Run mode.

"Ion level alarm sensitivity setup" (page 7)

■ Condition alarm output function (COND)

The condition alarm output indicator lights and an

alarm signal (control output (N.O.)) is output when

static elimination performance is influenced by an

excessive charge on the target object. When an alarm

signal is output, static elimination is not stopped.

Alarm output can be adjusted in three stages

according to the installation environment. The default

setting for the condition alarm sensitivity setting is

Low.

The ion level alarm output function is enabled in the

Run mode.

"Condition alarm sensitivity setup" (page 7)

3-4 Other Functions

This section describes the abnormal discharge detection and static elimination stop functions of the SJ-

M Series.

Abnormal Discharge Detection Function

To prevent trouble, the generation of ions is stopped when abnormal discharging caused by

condensation on the electrode probe tips or adhesion of debris, for example, is detected. At this time,

the alarm indicator and ion monitor blink to inform you that an abnormality has occurred. For details of

the indicated state on the Controller Unit (operation/display section), see "During an alarm (level 2)"

( page 13).

Static Elimination Stop Function

Static elimination only can be turned OFF in a powered ON state by two methods: by shorting the static

elimination stop input and 0V terminals on the Controller Unit (I/O terminal section), or by holding down

on the Controller Unit (operation/display section) simultaneously for about one second.

When static elimination stop input has been performed on the Controller Unit (operation/display

section), this state can be canceled by holding down simultaneously for about one second.

For details on indication states on the Controller Unit (operation/display section) when static elimination

stop input is canceled, see "Static elimination stop input (operation/display section)" ( page 13).

■ Static elimination stop input

Static elimination is stopped by either of the following methods.

By operation on the Controller Unit (I/O terminal section):

Short the static elimination stop input and 0V

terminals to stop static elimination.

The center LED of the ion monitor blinks (red).

"Controller Unit (I/O terminal section)" (page

To 24 VDC

power supply

To 24 VDC

power supply

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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Keyence SJ-M300 User Manual Page 9

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