KEYENCE AP-C40WP User Manual

Digital Pressure Sensor

WARNING

SET AP-C40 MODE

MPa

12

Pressure display units

*Apply the units sticker here.

Pressure display

Mode button

Manual adjustment button
Set button

Wiring

connector

Sensor head

connector

Mounting screws
(M3 x 2)

Operational indicator /
Output 1, Output 2

1 2

About
25 mm

About
25 mm

Connector
body

Connector

cover

Connector
lock

Orange

Brown

Blue

Gray

Pressure

connection

Insert until you hear a
clicking sound.

with 2-Color Display

AP-C40W(P) Series

Instruction Manual

1. Safety Precautions

96M0983

3. Sensor Head Installation

1) Cut the cable to an appropriate
length and strip away about 25
mm of the outermost insulation.

Note: It is not necessary to

remove insulation from the
core wires.

2) Insert the cables after aligning
them with the colors on the seal
on top of the connector body.

3) Press together the body and the
connector cover into which the
cables were inserted to make a
connection (use a pair of pliers
or similar tool to press them to­gether).

4) Insert the sensor head connec­tor into the hole of the amp unit.
To remove the connector, de­press the connector lock and
pull it out.

* Do not reuse sensor head

connectors that have already
been pressure-connected.

●

Do not use this product in safety circuits such as those designed to
protect human workers.

●

This product does not employ an explosion-proof construction. Do not
use it in the presence of flammable gasses, liquids, or powders.

●

This is a direct current power supply type sensor. Application of an
alternating current may result in explosion or fire.

■ Accessories

●

1 connector cable (2 m)

●

1 instruction manual

2. Part Names

●

1 unit scale label

●

1 sensor head connector

4. About Sensor Head Installation

Common Do not subject the case to pressure sufficient to deform

AP-41(M) • Use a torque of 0.3 N
43 • 44 for the sensor head conduits.

AP-48 Use a torque of 5 N

its shape during installation.

•

m or lower to tighten the screws

•

the sensor head conduits.
Take care that no foreign objects enter the sensor when
opening one of the pressure ports to atmospheric air.
Take care not to bend the pressure ports.
Connect the “High” port to the high-pressure side of the
system and the “Low” port to the low-pressure side.

m or lower to tighten the screws for

5. Mounting Brackets (option)

Dedicated mounting hardware is available for the sensor, allowing it to be
installed in a range of locations.

Horizontal mounting bracket Wall mounting bracket

(AP-BO1) (AP-BO2)

Faceplate/ceiling mounting bracket Tilted mounting bracket

(AP-BO3) (AP-BO4)

Substitution bracket (AP-B05)

*Distance between arms is same as the AP-30/40 Series brackets.

1

<Output 1>

P1

0

Output 1

OFF ON OFF

P2

0

OFF ON OFF

<Output 2>

Output 2

<Output 1>

P1

H1

Output 1

OFF ON OFF

0

P2

OFF ON OFF

H2

0

<Output 2>

Output 2

Hi

Lo

Output1/Output2

OFF ON ONOFF OFF

<Output 1/Output 2>

0

<Output 1>

P1

Output 1

OFF ON OFF

0

<Output 2>

0

Output 2

OFF ON OFF

P2

0

0

Shift

Zero shift input

T1

<Zero shift>

<Output 1>

P1

Output1

Zero shift input

OFF ON
OFF ON

0

<Output 2>

Hi

Lo

Output 2

OFFONOFF OFF

ON

Analog
output (1 to 5 V)

0 V

Main

circuit

Blue

Pink

12 to 24 VDC

Main circuit

Pink

Brown

(Short-circuit current 5 mA or less)

AP-AO1 Panel mounting bracket

SET AP-C40 MODE

MPa

Panel mounting ring

Front protective
cover

Panel-mounted bodyPanel-mounted bodyPanel-mounted body

Side where the metallic
contacts are visible faces up.

Connector cable

12 to 24 VDC

5 to 40 VDC
5 to 40 VDC

0V

Main circuit

Overcurrent

protection circuit

Load
Load

Input/output

circuit

Analog output/
zero shift input: switchable

Control output 1

Control output 2

Brown

Blue

Black
White

Pink

12 to 24 VDC

0V

Load

Load

Main circuit

Overcurrent

protection circuit

Black
White

Pink

Analog output/
zero shift input: switchable

Control
output 1

Control
output 2

Brown

Blue

Input/output

circuit

(Short-circuit current 5 mA or less)

Main

circuit

Blue

Pink

CAUTION

8. Detection Mode Operation

■ General-purpose mode (F-1)

This mode allows the user to configure 2 detection points.
Control output 1: Turns ON when pressure exceeds setting P1.
Control output 2: Turns ON when pressure exceeds setting P2.

SET AP-C33 MODE

MPa

6. Connection Method and Diagrams

Insert the included connector-tipped cable into the sensor's connector.
Position the connector so that the side of the connector where the metallic
contacts are visible is facing up.

Input/output circuit (AP-C40W) Input/output circuit (AP-C40WP)

*Hysteresis when operating in general-purpose mode and application

modes 1 and 2 is 0.5% of F.S. in the standard and high-speed modes.
During focus mode operation, it is 0.1% of F.S.

■ Variable hysteresis mode (F-2)

Two detection points may be user-configured, and hysteresis for both
may also be set.
Control output 1

: Turns ON when pressure exceeds setting P1. Turns OFF

when pressure drops the selected hysteresis amount
below P1.

Control output 2:

Turns ON when pressure exceeds setting P2. Turns OFF

when pressure drops the selected hysteresis amount
below P2.

■ Window mode (F-3)

The user may select a pair of upper (Hi) and lower (Lo) thresholds, and
the sensor turns OFF when the pressure falls outside of the resulting
range.
*Control output 1 is 0.5% of F.S. during standard and high-speed

operation, it has a hysteresis of 0.1% of F.S. in the focus mode, and
control output 2 has a hysteresis of 0.

Analog output circuit

7. Precautions for Safe Use

Follow these guidelines. Failure to do so may result in product damage.

■

■

■

Zero shift input circuit Zero shift input circuit
(AP-C40W) (AP-C40WP)

Connections

●

Always ground the frame ground terminal when using an off-the-shelf
switching regulator.

●

Use separate conduits for power line and high voltage lines , since use
of a common conduit may result in device malfunction caused by noise .

●

Improper wiring may result in the device becoming excessively hot or
in device damage.

Notice about CE marking

●

Attach the ferrite core (OP-87505) if you extend a sensor head cable/
amplifier power cable to 3 m or more to use.
(Attachment position: within 100 mm from the amplifier unit of a
power cable, Number of turns: 2)

Other

●

Do not use this sensor with corrosive gasses or liquids.

●

Do not insert objects such as wire into the pressure insertion area.
Doing so may result in the device failing to operate properly due to
damage to the pressure-sensitive elements.

●

Do not use sharp-tipped objects to press the setting keys.

■ Application mode 1 (A-1)

This detection mode is optimum for use in suction detection applica­tions.
Recommended heads: AP-41/41M/44
Control output 1:

Control output 2:

Zero shift: Shifts the zero point immediately after setting the zero

P1: Pressure setting for control output 1.
T1: Zero shift timer setting (ms) < Variable between 0 and 1,999 ms
P2: Pressure setting for control output 2.
*P2 is unrelated to zero shift and is always based on the current ambi-

ent pressure.

■ Application mode 2 (A-2)

This mode is optimum for use in leak test applications.
Recommended head: AP-43
Control output 1

Control output 2:

P1: Pressure setting for control output 1.
Hi: Upper threshold setting for control output 2.
Lo: Lower threshold setting for control output 2.
*The Hi and Lo values are unrelated to zero shift and are always based

on the current ambient pressure.

2

Suction pressure detection.
Turns ON when pressure exceeds setting P1.
Detection of vacuum burst pressure (or confirmation of
vacuum arrival pressure).
Turns ON when the pressure falls below setting P2. May
be set during focus mode operation, although there are
restrictions on the setting range.

shift timer once zero shift input is received.

: Leak pressure detection.

Turns ON when pressure falls below setting P1.
*Output only when receiving zero shift input.
Window comparator output for detection of fill pressure.
Turns OFF when pressure falls outside the range deter­mined by upper (Hi) and lower (Lo) thresholds. Fill pres­sure values are displayed with the center pressure as 0
during focus mode operation.

Detection mode

Operating mode

Standard

Focus mode
High-speed

Zero shift input
Analog output

N.O./N.C.

2.5 msec
5 msec
100 msec
500 msec

General-purpose mode
Variable hysteresis mode
Window mode
Application mode 1
Application mode 2

Analog/zero shift

Standard
Eco mode

Power-save

Chatter prevention
Sets response time.

* F-1 and F-2 mode only

Values that fall between the P1 and P2
settings will be displayed in green,
while values outside that range will be
displayed in red.

When

A-1/A-2 is

selected
during
fixed mode
operation

When

operating

mode is

• Two-point tuning

• Active tuning

* High-speed mode provides a 1-ms

high-speed response.

*1 Displayed in kPa during focus mode operation.
*2 Displayed in gf/cm

2

during folus mode operation.
*3 Displayed in bar during standard mode operation.
Displayed in mbar during focus mode operation.

Current value

Reference value

Hold value

Units

Increase the
setting.

Decrease the
setting.

For other

than

Focus center pressure

After 4 sec

of no key

operation.

Reference value*

Press for 3 sec or more.

+

+

■ Toggling the
display

■ Manual configuration

Settings are
manually
configured. The
display changes
for each mode.
* Toggling the

display of
settings (see the
diagram below).

*

Manual configuration
only during F-3/A-2
mode operation.

Current value

Peak hold

Bottom hold

* The reference value is

the pressure value when
zero shift input is
received and is replaced
only when zero shift
input is selected.

■ Mode
configuration

* See the Focus Mode section

of Part 10 for the center
pressures that can be
selected.

N.O.
N.O.
N.C.
N.C.

N.O.
N.C.

N.C.

N.O.

Control
output 1

Control
output 2

• N.O. = normal open.

• N.C. = normal close.

Display color (7-segment)

ON: Red, OFF: Green
ON: Green, OFF: Red
Normally red
Normally green

Within set value: Green
Outside set value: Red

()

kPa (41, 43, 44, 48),MPa (43)*

1

kgf/cm2 (43)kgf/cm2 *2 (48)
mmHg (41, 44)
inHg (41, 44)
psi (41, 43, 44, 48)
mbar (41, 44, 48)*3, bar (43)

9. Sensor Configuration

Flashes

for 3 sec.

Setting

Target object

present

Target object

absent

■ Toggling the display of settings

●

General-purpose mode/F1

●

Variable hysteresis mode/F-2

●

Window mode/F-3

●

Application mode 1/A-1

●

Application mode 2/A-2

■ Two-point tuning (F-1/F-2)

The sensor is made to detect the pressures when the target object is
present and then absent for confirmation of target suction pick-up, and
the intermediate value is used.
Control output 1 configuration: When P1 (H1) is selected on the settings
display.
Control output 2 configuration: When P2 (H2) is selected on the settings
display.

■ Active tuning (A-1)

See Section 11.

Note:• Press and hold the MODE button ( ) for at least 3 seconds to return to the current

value/reference value/hold value display from each of the mode setting screens.

• Press the left side on the manual adjustment button ( ) while holding down the
mode button ( ) to return to the previous display.

• The current value will be displayed based on the ambient pressure conditions prevalent
at that time without regard to zero shift input when the P2 setting display is selected for
A-1 mode or when the HI and Lo setting displays are selected for A-2 mode.

• The sensor must be configured manually when operating in the F-3/A-2 modes. The
SET button ( ) will not function.

3

10

Head

41
43
44
48
43
48
41
44
41
44
41
43
44
48
41
43
44
48

-20,0/-30,0/-40,0/-50,0/-60,0/-70,0/-80,0
200/300/400/500/600/700/800

80,0/60,0/40,0/20,0/0,0/-20,0/-40,0/-60,0/-80,0

-80,0/-60,0/-40,0/-20,0/0,0/20,0/40,0/60,0/80,0
2,00/3,00/4,00/5,00/6,00/7,00/8,00

-800/-600/-400/-200/0/200/400/600/800

-100/-200/-300/-400/-500/-600/-700

600/500/400/200/0/-200/-400/-500/-600

0,0/-5,0/-10,0/-15,0/-20,0/-25,0/-30,0

20,0/15,0/10,0/5,0/0,0/-5,0/-10,0/-15,0/-20,0

-1,00/-3,00/-5,00/-7,00/-9,00/-11,00/-13,00
10,0/30,0/50,0/70,0/90,0/110,0/130,0

12,00/9,00/6,00/3,00/0,00/-3,00/-6,00/-9,00/-12,00

-12,00/-9,00/-6,00/-3,00/0,00/3,00/6,00/9,00/12,00

-200/-300/-400/-500/-600/-700/-800
2,00/3,00/4,00/5,00/6,00/7,00/8,00

800/600/400/200/0/-200/-400/-600/-800

-800/-600/-400/-200/0/200/400/600/800

Selected units

bar

psi

inH

mmH

GF

Pa

kPa

mbar

mbar

kgf/cm

2

gf/cm

2

mmHg

psi

inHg

bar

Unit Center Pressure

0

-0.1MPa
O.K.

Zero shift input

Zero shift input

-0.5MPa
N.G.

1MPa

Head 1 V to 5 V
AP-41/41M 0to-101.3 kPa
AP-43 0to+1 MPa
AP-44/48 -101.3 to +101.3 kPa

Active 2 point tuning

Active 1 point tuning

Suction

Vacuum burst

P1 P2 T1

Automatic

configuration

_

_

Automatic

configuration

Manual

configuration

_

ApplicationType

P2

P1

Time

Zero shift input

T1

Vacuum

Step 1)

Step 2)

Device operation

with no target
object present

Operation

for several

cycles

Operation

for several

cycles

Device operation

with target

object present

Sensitivity
difference

display

Sampling

Sampling

Start

Start

Finish

Finish

Target object

present

Setting

display

Sampling

Start Finish

.Explanation of Features

■ Focus mode

Focus mode increases all display resolutions by a factor of 10.

Normal mode Focus mode

The following focus center pressures can be selected for the models
noted in the table below. (Unit: kPa)

* The current value is displayed as ±20% of the F.S. range with the

focus center pressure as the reference value (0).

■ Zero shift

Zero shift input forces the pressure at that time to be defined as zero.
This feature is useful in applications that require the detection of a cer­tain amount of pressure fluctuation without being influenced by changes
in the original pressure.

●

During A-1 mode operation (active hold display)

The hold values are reset each time the pressure value exceeds (or falls
below) the setting, and the peak hold (bottom hold) will then vary from
this point.

Peak hold value:

The peak hold value will be reset once a value is
encountered that exceeds setting P1, and new peak
values will be held from that point.

Bottom hold value:

The bottom hold value will be reset once a value is
encountered that falls below setting P2, and new
bottom values will be held from that point.

■ Power-save

The value display will be turned off during power-save operation to re­duce the amount of power consumed.

●

Use of any keys during eco mode operation will revert the sensor to
its normal display. The sensor will return to the eco display when
there is no key input for a period of 3 minutes.

■ Switching the display color

Corresponds to either output 1 or output 2 based on which setting dis­play has been selected.
* rGr can only be set when either the F-1 or F-2 mode is selected.

Values that fall between the P1 and P2 settings will be displayed in
green, while values outside that range will be displayed in red.

11

.Active Tuning

(Example: leak testing)
Zero shift input received when a container is filled with air will allow the
amount of leak after a certain time to be displayed as negative pressure.
This approach eliminates the influence of small variations in the final fill
pressure of the container.

The pressure value (reference value) when zero shift input is received
can be verified from the current value display by pressing the button
to switch to the reference value display.
( ⇔ )
Press the button once more to return to the current value display.

■ Analog output

A voltage corresponding to the pressure value is output.
* Ambient pressure compensation is also applied to analog output.

* The resolution of analog voltage output will not be enhanced during

focus mode operation.

■ Peak/bottom hold display

The maximum (minimum) values are displayed continuously after power to
the sensor is turned on.
The active hold display indicated below is used when the A-1 mode is selected.

How to display hold values/

From current value/reference value display

The minimum value during zero shift input is displayed for the bottom
hold during A-2 mode operation.

Resetting the peak/bottom hold values/

Pressing for 3 seconds or more while the peak and bottom hold
values are being displayed will reset the values.
*The values will also be reset when power to the sensor is turned off,

+ / Activates peak hold display.
+ /Activates bottom hold display.

and when the device's detection mode or operating mode is changed.

■ Perform these steps first

Select the setting display as indicated below before performing the
tuning procedures.
Active 2 point tuning: Select either P1 or T1 for the setting display.
Active 1 point tuning: Select P2 from the settings display.

■ Active 2 point tuning / a tuning method suited for auto­matically configuring suction pick-up detection pressures

The zero shift timer setting is manually configured, and the sensor au­tomatically selects the best pressure setting (P1) for this value.

■ Active 1 point tuning / tuning optimized for vacuum burst
detection

The sensor automatically selects the best pressure setting (P2) for
vacuum burst detection.

12

.Ambient Pressure Compensation

Open the applied pressure to the surrounding air so that it equals the
ambient pressure and press the button for 3 seconds or more while
the current value or reference value is being displayed.
The ambient pressure point will be corrected.

4

*1 Ambient pressure can be corrected within a range of ±5 % of F.S.

Model

Environmental

resistance

Units

Pressure resistance
Adaptive fluids

Pressure type

Temperature
characteristics

Pressure port

Housing material

Weight

Ambient temperature
Relative humidity
Vibration
Shock Resistance

Rated pressure range

7 g (not including cables) / 70 g (including

3-m cable) (4.8 g / 67.8 g for AP-41M)

35 g/98 g

10 to 55 Hz, compound amplitude 1.5 mm, 4 hours for each of XYZ axes

35 to 85 % RH (No condensation)

0 to +50 °C (No freezing)

M5 male screw PT1/8

Within ±2 % of F.S. (at 25°C)

(in temperature range of 0 to 50°C)

Differential

pressure

Gage pressure

Air, non-corrosive gasses

AP-48

500 kPa500 kPa 1.5 MPa 500 kPa

AP-41/41M

AP-43 AP-44

1,000 m/s

2

, 10 times for each of XYZ axes, total 60 time

Case: PBT; Screws: SUS303

kPa

bar

psi

inHg

mmHg

kgf/cm

2

0 to -101.3

101.3 to -101.3

-101.3 to 101.3

0 to 1.000 MPa

0 to -29.9
0 to -14.69
0 to -1.013

0 to 145.0
0 to 10.00

29.9 to -29.9

14.69 to -14.69

1.013 to -1.013

-1.013 to1.013

-14.69 to 14.69

0 to -760

0 to 10.20

760 to -760

-1.033 to 1.33

Model
Head combination

Display method

Configuration/display
range *1

Operating status indicators

Repeatability
Hysteresis *2
Display temperature

characteristics
Response

(chatter

prevention feature)

Zero shift input

Control output

Analog output

Housing material
Weight
Accessories

Power supply voltage

Current
consumption

Vibration

Relative humidity

Ambient temperature

Rating

Resolution

Environmental

resistance

AP-C40W(P)

12 to 24 VDC±10% Ripple (P-P) 10% or less

Red 4.5 digit, 7 segment LED display (4.5 mm character height)

AI indicator (green) Display refresh rate: 10 times/sec

-15 to +110 % of F.S.

±0.2% of F.S. or less

Variable (standard 0.5% of F.S.)

Within ±1% of F.S. (at +25°C)

(within 0 to +50°C temperature range)
Selectable from 1, 2.5, 5, 100, 500 ms

Input time 2 ms or greater

(Switchable with analog output.)

NPN open collector Max. 100 mA (40 V or less)

Residual voltage 1 V or less, 2 outputs (NO/NC switchable)

PNP open collector Max. 100 mA (30 V or less) *3

Residual voltage 1 V or less, 2 outputs (NO/NC switchable)

1 to 5 V Output impedance 1 kΩ or less

(Switchable with zero shift input.)

0 to +50 °C (No freezing)

35 to 85 % RH (No condensation)

10 to 55 Hz, compound amplitude 1.5 mm, 2 hours for each of XYZ axes

Main unit cover : Polycarbonate

Approx. 80 g (including 2-m cable) / Approx. 35 g (not including cable)

Head connectors, units sticker connector cable

Red LED x 2 (supports control output 1 / control output 2)

12 V operation( NPN/PNP)

780mW (65mA)/960mW (80mA) or less

24 V operation( (NPN/PNP)

1080mW (45mA)/1440mW (60mA) or less

540mW (45mA)/660mW (55mA) or less 840mW (35mA)/1080mW (45mA) or less

AP-41/41M

Normal
Eco mode

AP-43 AP-44 AP-48

Standard mode

High-resolution mode

kPa
kgf/cm

2

mmHg
inHg
psi
bar
kPa
kgf/cm

2

mmHg
inHg
psi
bar

0.1

0.01

0.1

0.1

0.01

0,001

0.001

0.02

1

0.1

0.01

0.001

0.01

0.01

0.1

0.002

0.1 mbar 0.2 mbar

0.001 MPa 0.1

1

0.1

0.02

0.001

0.02

0.2

0.01

0.2 mbar

0.1

0.001

0.02

0.001

0.02

0.2 gf/cm

2

0.0040.004

• No difference in sensitivity
(during 2 point tuning/active
tuning).

• There is an applied pressure
of ±5 % of F.S. during ambient
pressure compensation.

• There is no sensor head
connected.

• The connection to the sensor head
is broken.

• An excess current is flowing to the
control output.

• Reading is falling below
(exceeding) configuration/display
pressure range.

• Reading is exceeding (falling
below) configuration/display
pressure range.

• When there were not at least 2
shift inputs during active 2 point
tuning.

Adjust the air pressure device so that
there will be a difference in sensitivity.

(Return to atmospheric pressure.)
Repeat atmospheric compensation.

Verify that a sensor head is connected
and turn the power on again.

Repair the sensor head disconnection
and turn the power to the sensor back
on.

Check the load and return it to the
rated range.

Return the pressure to the rated
pressure range.

Return the pressure to the rated
pressure range.

Repeat the active tuning procedure
so that there are at least 2 shift inputs.

Display Cause Solution

Units
Detection mode
Operating mode
N.O./N.C. switching

Analog/zero shift

*

Chatter prevention
Display color
Power-save

j

When atmospheric pressure compensation has been performed, the
settings will be saved even when power to the sensor is turned off.

*2 Can also be used when operating in focus mode, although for some

center pressures the display will read FFF.
(Atmospheric pressure compensation is being performed.)

13

.Key Lock

Disables operations that would modify the sensor’s configuration. Display
content can be toggled.

Pressing and holding either or for at least 3 seconds while pressing

button will lock the keypad and cause the display to flash.

* The same key combination will deactivate the key lock feature.

14

.Specifications

■ Sensor head

15.

Error Displays and Corrective Actions

■ Error displays during normal operation

* Contact KEYENCE for information about error displays other than those

described above.

16

.Default Mode Settings (Initialization)

The sensor ships with the following configuration.

■ Amplifier

*1 During focus mode operation, restricted to focus range.
*2 During focus mode operation, standard 0.1% of F.S.
*3 The AP-C40WP uses PNP output.

*Press button 5 times while holding down the button to return the

sensor to its default configuration.

WARRANTIES AND DISCLAIMERS

KEYENCE, at its sole option, will refund, repair or replace at no charge any
defective Products within 1 year from the date of shipment. Unless stated
otherwise herein, the Products should not be used internally in humans, for
human transportation, as safety devices or fail-safe systems. EXCEPT FOR

THE FOREGOING, ALL EXPRESS, IMPLIED AND STATUTORY
WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
PROPRIETARY RIGHTS, ARE EXPRESSLY DISCLAIMED. KEYENCE
SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL OR OTHER DAMAGES, EVEN IF DAMAGES RESULT
FROM THE USE OF THE PRODUCTS IN ACCORDANCE WITH ANY
SUGGESTIONS OR INFORMATION PROVIDED BY KEYENCE. In some

urisdictions, some of the foregoing warranty disclaimers or damage limitations

may not apply.

Copyright (c) 2008 KEYENCE CORPORATION. All rights reserved.
0983E 1022-3 96M0983 Printed in Japan

5

E 1101-3