DPA-3SR1

Instruction Manual

MASTER SET
OK
NG

DPA-3SR1

Contents
1. Overview

1-1.Features

2. Specifications

2-1. Absolute maximum ratings..........

p. 1..........

p. 1..........

2-2. Specifications table..........

2-3. Response time characteristics..........

2-4. Part names and functions..........

2-5. Electric circuit diagram..........

2-6. Wiring

3. Operation Preparation..........

3-1. Fitting mounting..........

3-2. Body mounting..........

3-3. Air piping connections

p. 2
p. 3
p. 4
p. 4
p. 5

p. 6
p. 6
p. 7

4. Display at Power On...........

p. 8

5. Supply Pressure Alarms...........

p. 8...........

p. 9

6. Modes6-1. Overview of modes...........

6-2. Determination mode...........

6-3. External master set mode...........

6-4. SMOOTHING set mode

p. 10
p. 11
p. 12

7. Master Setting

7-1. Example of setting master workpiece (same for all modes) . . . . . . . . . . .
7-2. Master setting via button input (determination mode)...........

p. 13

p. 14
7-3. Master setting via external input (external master set mode) . . . . . . . . . . . p. 15〜 p. 16...........

8. Frequently-asked Questions (FAQs)

2

p. 17

1.Overview
This machine uses non-contact measurement to measure air pressure, in order to determine gaps
between workpieces and air nozzles at a high level of precision. It compares the current value with apreset gap master value. If the current value is narrower than the master value, the gap is determined to
be OK. If it is wider, it is determined as NG.
It uses LEDs and signal output to indicate determination results.
The flow passage has three ports, and results are determined independently for each.
The master value is calculated from the port 1 master value, port 2 master value, and port 3 master value.

OK

Port1

OK

Port2

OK

Port3
0

Gap
Port #1 master value Port #2 master value Port #3 master value

1-1. Features① Capable of measuring with high repeat accuracy.
② Displays and outputs determination results independently for each of three ports.
③ Can be controlled using buttons or external input.
④ Enclosed in an IP67 dust-proof/waterproof structure.

2. Specifications
2-1. Absolute maximum ratings
Item

Value

Unit

Supply voltage

26.4

V

Input withstand voltage
Output withstand voltage
Output withstand current
Supply pressure

26.4
26.4

20 each
300

V
V

mA

kPa

(Note) Applying stress exceeding the absolute maximum ratings above may cause serious damage tointernal structural parts.

12. Specifications
2-2. Specifications table
Product name

DPA-3SR1

Repeatability (Note 1) - (Note 4)±0.5μm (master value：1〜60μm)±1μm (master value：60〜100μm)
Air Pressure change : within ±1%
Guaranteed repeat accuracy range (Note 1) - (Note 4)

1〜100μm

Fluid used

Dry air (filtered to 5μm)

Setting pressure

150〜200kPa

Consumption flow rate (Note 1) - (Note 4)

27ℓ/min（max）

Connection bore
Recommended piping

Rc1/8
φ6×φ4

SUP port

φ4×φ2.5, φ6×φ4

OUT port (Note 5)
Response speed

Refer to response time characteristics graph (p.3)

Power supply voltage

DC24V±10％

Current consumption

Up to 100mA

Input specification

Photocoupler output: Non-voltage output with polarity
DC24V±10％Output specification

Photocoupler output: Non-voltage output with polarity(collector/emitter floating)
Voltage: Up to 24 VDC±10%
Current: Up to 20 mA
Residual voltage 1.5 V or less (at 15 mA)

Cable

Standard length 3m Oil resistance φ5.5/16 cores AWG 28

Electrical response speed

10ms、
20ms、
80ms (can be set in SMOOTHING set mode)

Protective structure

IP67

Operating temperature range

0℃−60℃ (no condensation)(Note 1) Value obtained under conditions using the recommended air nozzle (p.7). If an air nozzle of adifferent shape will be used, verify on the actual machine before deciding.
(Note 2) Value obtained under conditions using the recommended piping. If a different piping diameter will
be used, verify on the actual machine before deciding.
(Note 3) Value obtained under conditions using one nozzle per port. If multiple nozzles per port will be
used, verify on the actual machine before deciding.
(Note 4) Value obtained under conditions using the included leakage unit.
(Note 5) The external shape of the connection tube for the attached leakage unit is Φ6.
A converter is required to connect a tube with an outer shape of Φ4.

2

2. Specifications
2-3. Response time characteristics
The response time is the time it takes for determination output to switch ON once a workpiece has beenbrought toward the air nozzle and has stopped moving (with air supplied to the machine). This will varydepending on factors such as the length and diameter of the piping from the OUT port to the air nozzle,
the seating of the workpiece, and the supplied air pressure.The graphs below show response times whena workpiece is brought toward the air nozzle at a speed of 10 mm/sec. until the gap is reduced to themaster value minus one (μm), when there is sufficient space between the air nozzle and workpiece.(Forexample, if the master is set at 20 μm, the response time is measured when the workpiece has been
moved up to 19 μm.)
●Common test conditions

φ1.5
Port 110mm/sec

Air nozzle
Measurement port
Workpiece movement speed

Workpiece movement speed

Workpiece

Gap●Measurement system

Air

Leakage unit

Air nozzle

Precision regulator

Piping between OUT port and air nozzle
Length of piping between OUT port and air nozzle●Response time characteristic graph
Response time[sec]

3.5
3
2.5
2
1.5
1
0.5
0

Response time[sec]4.5

φ4×φ2.5
φ6×φ4

4

0

20

40

60

80

φ4×φ2.5
φ6×φ4

4
3.5
3
2.5
2
1.5
1
0.5
0

100

0

20

40

60

80

100

Master value[μm]Master value[μm]・Length of piping between OUT port and air nozzle：1.5m
・Setting pressure：150kPa

・Length of piping between OUT port and air nozzle：1.5m
・Setting pressure：200kPa

4.5

4.5

φ4×φ2.5
φ6×φ4

4
3.5

Response time[sec]Response time[sec]

4.5

3
2.5
2
1.5
1
0.5
0

0

20

40

60

Master value[μm]

80

3.5
3
2.5
2
1.5
1
0.5
0

100

φ4×φ2.5
φ6×φ4

4

0

20

40

60

80

100

Master value[μm]・Length of piping between OUT port and air nozzle：5m
・Setting pressure：150kPa

・Length of piping between OUT port and air nozzle：5m
・Setting pressure：200kPa(Note 1) The response times shown in the above graphs are measurement values only and are not guaranteed.
(Note 2) There is no difference in response time by port.
(Note 3) There is no difference in response time by length of piping between the regulator and SUP port.
32. Specifications
2-4. Part names and functions
Item

2
1
4
5

Description

1. Port #1 LED

Determination results are displayed while

3 2. Port #2 LED
6 3. Port #3 LED

in determination mode.Input complete canbe verified in external master set mode.

MASTER SET
OKNG

4. Port #1master set button

Pressing and holding a button for at least
one second while in measurement mode
will set the master for the applicable port.

DPA-3SR1

5. Port #2 master set button

Pressing and holding the port 1 master set
button and port 3 master set button at thesame time for at least five seconds while in

6. Port #3 master set button

measurement mode will switch to
SMOOTHING set mode.

2-5. Electric circuit diagram
６．
８ｋΩ

６．
８ｋΩ

６．
８ｋΩ

Main circuit

RED

DC24Ｖ

PINK

Master set input #1

PURPLE

Master set input #1(０Ｖ)

GREEN

Master set input #2

LIGHT GREEN

Master set input #2(０Ｖ)

WHITE

External master set permission input

GRAY

External master set permission input(0V)

MEDIUM BLUE

PORT #1 Determination output (collector)

LIGHT BLUE

PORT #1 Determination output (emitter)

YELLOW

PORT #2 Determination output (collector)

BLUE

PORT #2 Determination output (emitter)

BROWN

PORT #3 Determination output (collector)

LIGHT BROWNPORT #3 Determination output (emitter)

ORANGE

Supply pressure alarm output (collector)

LIGHT ORANGE Supply pressure alarm output (emitter)
BLACK

4

0Ｖ

2. Specifications
2-6. Wiring

RED

DC24V±10％

BLACK

0V

PINK

Master #1 SET input

PURPLE Master #1 SET 0V
GREEN

Master #2 SET input

LIGHT
GREEN

Master #2 SET 0V

WHITE

STOP input

GRAY

STOP 0V

MEDIUM Determination #1
BLUE (collector)
LIGHT
BLUE

Determination #1(emitter)

Determination #2
YELLOW(collector)
BLUE

Determination #2(emitter)

Determination #3
BROWN(collector)
LIGHT Determination #3
BROWN (emitter)
ORANGE ALARM (collector)
LIGHT
ORANGE ALARM (emitter)

Description

Example load connection−

Power supply

Master #1 can be set by turning Master #3 can be
ON for 100 ms while in STOP
set by turning ON
mode.
for 100 ms

24V

simultaneously
Master #2 can be set by turning
while in STOP
ON for 100 ms while in STOP
mode.
mode.

Input
6.8kΩ
0V
0V

Turns ON while in Measuring mode to move to
STOP mode.
Outputs the master #1 determination in
Measuring mode.
Turns ON when the current value is at or below
master #1.
Turns ON for 200 ms as ACK for the master #1
set in STOP mode.
Outputs the master #2 determination inmeasurement mode.
Turns ON when the current value is at or below
master #2.
Turns ON for 200 ms as ACK for the master #2
set in STOP mode.
Outputs the master #3 determination inmeasurement mode.
Turns ON when the current value is at or below
master #3.
Turns ON for 200 ms as ACK for the master #3
set in STOP mode.

24V
For collector load
(Active low)Load

SignalCollector
Emitter
0V

OR

24V
Collector
Emitter
For emitter load
(Active high)

Load

Color

0V

Turns ON while the supply pressure is normal.

Connect the output in accordance with the design conditions.
Note: Individually isolate the unused input and output lines.

53. Operation Preparation
3-1. Fitting mounting① Connect a fitting to either SUP port 1 or 2 in the figure shown below.
Insert a plug (attached) into whichever SUP port is not being used.
② Connect fittings to OUT ports 1 through 3 in the figure shown below.
Insert a plug into any unused OUT ports.
(Note 1) Fittings and OUT port plugs are not attached. They will need to be purchased separately.
(Note 2) Be sure to also use plumber's tape.

3-2. Body mounting

Use 4-M4 D6 on the mounting surface shown in the figure below to mount to the machine body.
(Note 1) In order to prevent backflow of coolant from the nozzle, mount the body as far above the air
nozzle as possible.
(Note 2) Select a position that ensures that the piping is as short as possible between the OUT port and
air nozzle, and between the SUP port and regulator.
● Outer dimension
Port #3 LED

Port #2 LED26

OUT port #3
Rc1/8

Port #3 master set button
Port #2 master set button
SUP port #2
Rc1/8
95

69

OUT port #2
Rc1/8

OUT port #1
Rc1/8
Port #1 LED
Port #1 master set button

SUP port #1
Rc1/8

8

8

22

36

Cable

69.1

34

54

4-M4D6

Mounting surface

72

6

3. Operation Preparation
3-3. Air piping connections

Refer to the piping example. Connect the precision regulator and air filter to either SUP port 1 or 2, andconnect the air nozzle and leakage unit to OUT ports 1 through 3.
● Piping example (Note1)(Note3)
Detected object/Master

OUT port #2
OUT port #3

OUT port #1

Air filter (5 μm mesh)

Recommended air filter: AF20-02 (SMC)* Connect piping using
the same method
as OUT port #1.

SUP port piping

Clamping

Air(Recommended

diameter: Φ6×Φ4)

Air

Air nozzle

Precision regulator (Note 2)

SUP port #1

Recommended regulator
IR2000(SMC)
PR1000(CKD)* Adjust the supply pressure toa value from 150 kPa to 200 kPa.

OUT port piping (Note 4)(Note 5)* Insert a plug (attached)
if using SUP port 1.

●Recommended nozzle shape (Note 6)(Recommended diameter: Φ4×Φ2.5 and Φ6×Φ4)●Leakage unit shape (Note 7）

C 0.1〜0.2

φ0.5 (Note 8)
Connection tube
external shape
φ6

12.5

(slight chamfering)

5

+0.02
φ1.5 0

Leakage unit

SUP port #2

Connection tube
external shape
φ6
34.6

φ4 ≦

(Note 1) The precision regulator, air filter, and piping are not attached. They will need to be purchased
separately.
(Note 2) Use a precision regulator. (Repeatability must be within ±0.5%)(Note 3) Supplying air of 300 kPa or higher to the machine could damage internal structural parts.
Adjust the supply pressure to a value from 150 to 200 kPa before connecting piping.
(Note 4) Do not use devices or fittings which could cause air leaks or resistance on the piping from the
OUT ports to the air nozzle.
(Note 5) The external shape of the connection tube for the attached leakage unit is Φ6. A converter isrequired to connect a tube with an outer shape of Φ4.
(Note 6) Air nozzles are not attached. They must be produced by the customer based on therecommended air nozzle shape.
(Note 7) Install the leakage unit in a location that will not be exposed to coolant and cuttings when air is
stopped.
(Note 8) Ensure that the hole on the leakage unit is not blocked.
7

4. Display at Power On
When the power is turned on, the LEDs blink blue and then the machine begins normal operation.
If there is a memory error, the LEDs will blink red when the power is turned on.
The machine cannot be operated normally in this state. Contact us for support.

5. Supply Pressure Alarms
A supply pressure alarm occurs when the supply pressure falls outside of the specification range.
DPA-3SR1 has the following supply pressure alarms.
Alarm name

LED display
Port #1LED Port #2 LED Port #3 LED

Supply pressure
alarm outout

Details

100kPa alarm

ON (red)

OFF

OFF

OFF

The supply pressure is 100kPa or less

220kPa alarm

OFF

OFF

ON (red)OFF

The supply pressure is over 200kPa±10kPa alarm

Applicable LED blinks purple

OFF

Supply pressure changes ±10 kPa or
more from when master was set(Note) A supply pressure of 150 kPa is set for the master at the factory.
This could trigger the ±10 kPa alarm depending on the pressure being supplied.
Set the master first before use.

8

6. Modes
6-1. Overview of modes
DPA-3SR1 has the following modes.
Mode

Description

How to enter the mode

Determination mode Compares the master values and current value
and outputs the determination results. The
master can be set via button input. Setting themaster via external input is prohibited.

Turn external master set
permission input OFF.

External masterset mode

Stops determination and turns outputs other than Turn external master set
supply pressure alarms OFF. The master can be permission input ON while inset via external input.
determination mode.
Setting via button input is prohibited.

SMOOTHING
set mode

Stops determination and turns all outputs OFF.
The averaged count for pressure measurement
can be changed using by pressing either button.

Press and hold the port 1
master set button and port 3
master set button at the sametime for at least five seconds
while in determination mode.

External master set
permission input ON

External master set
permission input OFF

Determination
mode

External masterset mode

Port 1 master set buttonand port 3 master set buttonpressed at same time
for at least five sec.

SMOOTHING
set mode9

No operation for 3 sec.
or more6. Modes
6-2. Determination mode

When the external master set permission input is OFF, the machine switches to determination mode.
While in determination mode, it continuously compares the current value with the preset master value,
and indicates the determination results using the LEDs and outputs.

LED display and output in Measuring modeOKNG
determination determination

Item

Display

Port #1
LED
Applicable
LED ON(blue)

Port #2
LED

Applicable
LED ON(red)

Port #3
LED

Master set complete

During supply pressure alarmPort #1

Port #2

Port #3

100kPaalarm

220kPaalarm

blue/lit↓
blue/blink

OFF

OFF

red/blink

OFF

OFF

blue/lit↓
blue/blink

OFF

OFF

OFF

OFF

OFF

blue/lit↓
blue/blinkOFF

red/blink

OutputPort #1
determination
Applicable
Port #2
determination output ON

Applicable
output OFF

Responds to determination
OFF

Port #3
determination
Supplypressure
alarm

OFF

±10kPaalarm

Applicable LED
blinking purple(other LEDs
respond to
determination)

Applicable
output ON(other LEDs
respond to
determination)OFF

Responds to supply pressure alarm status

ExampleOK determination

Port #1

OK determination

Port #2

OK determination

Port #3
0

Port #1 master value

MASTER SET
OK
NGPort #2 master value

MASTER SET
OK
NG

DPA-3SR1

MASTER SET
OK
NG

DPA-3SR1

10Gap

Port #3 master value

MASTER SET
OK
NG

DPA-3SR1

DPA-3SR1

6. Modes
6-3. External master set mode

When the external master set permission input is ON, the machine switches to external master set mode.
Outputs other than supply pressure alarms are turned OFF and the master can be set via external input.
The master can be set via external input when all LEDs are blinking blue (supply pressure normal) or
blinking purple (supply pressure changes ±10 kPa or more from when the master was set).

External master set mode LEDs and outputs
Item

Supplypressure
normalDisplay

During supply pressure alarmPort #1

Port #2

Port #3

100kPaalarm

red/litOFFOFF

red/litOFFOFF

red/lit

OFF

OFF

OFF

Port #3
LED

OFF

OFF

red/litOFF

red/blink

Port #1
determination

For 200 ms
ON (ACK)
↓
OFF

OFF

OFF

OFF

For 200 ms
ON (ACK)
↓
OFF

OFF
OFF

OFF

OFF

For 200 ms
ON (ACK)↓OFFPort #1
LED
Port #2
LED

Port #2
determination
OutputMaster set complete

blue/blink

OFF

Port #3
determination

Supplypressure
alarm

OFF

Responds to supply pressure
alarm status

ON

MASTER SET
OK
NG

DPA-3SR1

11220kPaalarm±10kPaalarm
Applicable LED
blinking purple(other LEDs
respond to
determination)OFF6. Modes
6-4. SMOOTHING set mode

Pressing and holding the port 1 master set button and port 3 master set button at the same time for at least
five seconds while in determination mode will switch to SMOOTHING set mode.
If there is no operation for 3 seconds or more in SMOOTHING set mode, the mode will automaticallyswitch to determination mode.
Press any of the buttons while in SMOOTHING set mode to switch the averaged count for pressure
measurement from 4 to 16 and then to 64.
The electrical response time will be 10 ms, 20 ms, and 80 ms, respectively.
The averaged count is set to 4 at the factory.
Port 1 master set button and port 3 master set buttonpressed at same time for at least five sec.
SMOOTHING set mode

Averaged count: 4
Any button pressed
Determination mode

Averaged count: 16
Any button pressed
Averaged count: 64
Any button pressed

No operation for 3 seconds or more

SMOOTHING set mode LEDs and outputs

Display

Item
Port #1 LED
Port #2 LED

Averaged count: 4

Averaged count: 16

Averaged count: 64

red/blink

purple/blink

blue/blink

OFF

OFF

OFF

Port #3 LED

OutputPort #1 determination
Port #2 determination
Port #3 determination
Supply pressure alarm127. Master Setting
Master setting refers to using a master workpiece to set the master value, which is a threshold value
used for determination. The master can be set in determination mode and in external master set mode.
Refer to the table below, as the method for setting the master differs by mode.
Master settingMode

ACK output

Button input

External input

Determination mode

Y

N

N

External master set mode

N

Y

Y

(Note 1) The master values are saved even when the power is turned off.
(Note 2) If the measurement system changes, make sure to set the master again.

7-1. Example of setting master workpiece (same for all modes)

When setting the master, set a gap to serve as the master value as shown in the examples in the figures
below.

Master value(2) If using a master workpiece with a gap

Master workpiece

Master workpiece

Shim
Air nozzle
Air

Air nozzle
Air

Master value(1) If using a shim

13

7. Master Setting
7-2. Master setting via button input (determination mode)
The master can be reset by setting the master workpiece in place and then pressing the button
corresponding to each port for at least 1 second in determination mode.
Refer to the figure below for details.
External master set permission input OFF
Adjust to supply pressure of 150 to 200 kPa

Determination mode

Supply pressure
outside rated range

100kPa alarm
220kPa alarm

Press port #1 master set button
when supply pressure is within rated range (Note1)
Port #1 LED blue/lit
Port #2 LED OFF
Port #3 LED OFF

Release port #1 master set button

Press port #1 master set button for at least 1 sec.
Port #1 LED
blue/lit↓
blue/blink

Press port #2 master set button
or port #3 master set button

Release port #1 master set button
Master setting
canceled

Master setting port #1 (Note2)

Completion

Port #1 master set button

Completion

MASTER SET
OK
NG(Note 1) The master can be set even during a ±10 kPa alarm, if the supply pressure is within the rated range.
(Note 2) The master can be set for port #2 and port #3 by using the same procedure for port #1 andpressing the corresponding button.The master does not need to be set for port #1, port #2, and port #3 inany particular order.
14

7. Master Setting
7-3. Master setting via external input (external master set mode)
The master can be reset by setting the master workpiece in place and then inputting a pulse corresponding
to each port in external master set mode. Refer to the figure below for details.

External master set permission input ON
Adjust to supply pressure of 150 to 200 kPa

External master set
mode

Supply pressure
outside rated range

100kPa alarm
220kPa alarm

Supply pressure within rated range (Note1)

Send a pulse ofat least 100 ms
to master set input #1

Send a pulse ofat least 100 ms
to master set input #2

Send a pulse ofat least 100 ms
to master set input #1
and master set input #2
simultaneouslyPort #1 LED red/lit
Port #2 LED OFF
Port #3 LED OFF

Port #1 LED OFF
Port #2 LED red/lit
Port #3 LED OFF

Port #1 LED OFF
Port #2 LED OFF
Port #3 LED red/lit

ACK output：
Port #1determination
200ms ON

ACK output：
Port #2 determination
200ms ON

ACK output：
Port #3 determination
200ms ON

Master setting port #1

Master setting port #2

Master setting port #3

Completion

Completion

Completion(Note 1) The master can be set even during a ±10 kPa alarm, if the supply pressure is within the rated
range.
(Note 2) The master does not need to be set for port #1, port #2, and port #3 in any particular order.

15

7. Master Setting
Timing chart
External master set
permission input
Master set input 1
Master set input 2

ON

Determination
mode
tw1

OFF

tin

ON

OFF

Port #2
determination output

ON

Port #3
determination output

ON

tin

td

ON

ON

tw2

tw2

OFF

Port #1
determination output

Determination
mode

External master set mode

tack

OFF

tin
tin
td

td
tack

OFF

tack

OFF

Timing definition
MIN

Parameter
Time from external master set permission input
start until set input
Set input time (pulse width)

100

ms

tin

100

ms

tack

ACK output time (pulse width)

tw2Time from set input completion to ACK output

16

Unit

tw1

td

Time from set input completion to set input

MAX

100
200
100

220

ms
ms
ms

8. Frequently-asked Questions (FAQs)
1. Specifications
Q.1-1
Is distance output as an absolute value?
A.1-1
No. Gaps are determined as being either above or below the master value only. (Refer to p.1)
2. Wiring
Q.2-1
Should the output line be connected to either the collector or the emitter?
A.2-1
No. This is the photocoupler output and must be connected to both.

Refer to the connection examples shown in "Wiring" (p.5) for information on how to connect it.

Q.2-2
A.2-2

Does the output line switch between 24 V and 0 V?
No. This is the photocoupler output so it switches between conducting and isolated.
Refer to the connection examples shown in "Wiring" (p.5) for information on how to connect it.

Q.2-3
A.2-3

Does the output line switch between 24 V and 0 V?
Yes. This is the photocoupler output so it does have polarity.
Refer to the connection examples shown in "Wiring" (p.5) for information on how to connect it.

3. Pressure alarm
Q.3-1
When the machine first starts up, the LEDs blink purple and the supply pressure alarm output is OFF.
A.3-1

Q.3-2
A.3-2

Is this a supply pressure alarm?
A supply pressure of 150 kPa is set for the master at the factory.
This could trigger the ±10 kPa alarm depending on the pressure being supplied.
Set the master first before use. (Refer to p. 13)

The pressure gauge shows that the machine is operating within the rated pressure range,
but a pressure alarm is triggered. Is this a failure?
First check for air leaks or blockages in the piping from the pressure gauge and machine,
as well as any connected devices that could be providing resistance.

4. Determination mode
Q.4-1
The LEDs and determination output do not change. Is this a failure?
A.4-1
Check whether a pressure alarm has been triggered. (Refer to p. 8)

Check whether the machine is in determination mode. (Refer to p. 9)
The master may not have been set correctly.
Check the conditions and then set the master again.
If checking these shows no problems, check for blockage in the air nozzle, leakage unit,or piping;
air leaks from the sensor to the air nozzle (outside of the leakage unit);
or any devices connected that could be providing resistance.

Q.4-2
A.4-2

The LEDs switch to normal but output stays OFF. Is this a failure?
The output cable may not be connected properly or may be disconnected.
Refer to the connection examples shown in "Wiring" (p. 5) for information on how to connect it.

Q.4-3
A.4-3

The LEDs switch to normal but output stays ON.
The output cable may not be connected properly.
Confirm that it is connected with proper polarity.
Refer to the connection examples shown in "Wiring" (p. 5) for information on how to connect it.

Q.4-4
A.4-4

The machine does not reach the repeat accuracy listed in the specifications table. Why?
The repeat accuracy listed in the specifications table is guaranteed only under recommended conditions.
Refer to the recommended values for gap distance, piping, and air nozzle shape. If different conditions
are being used, verify use on the actual machine to determine whether use is possible.

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