SMC Networks ZSE20A User manual

No.PS※※-OMU0003-C
PRODUCT NAME
Digital Pressure Switch
MODEL / Series / Product Number
ZSE20A(F)
ISE20A

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No.PS※※-OMU0003-C
Table of Contents
Safety Instructions 2
Model Indication and How to Order 8
Summary of Product parts 10
Definition and terminology 11
Mounting and Installation 15
Installation 15
Piping 17
Wiring 19
Outline of Settings [Measurement mode] 22
Pressure Setting 23
3 Step Setting Mode 24
Simple Setting Mode 26
Function Selection Mode 28
Function selection mode 28
Default setting 28
F 0 Units selection function 30
F 1 Setting of OUT1 31
F 2 Setting of OUT2 34
F 3 Digital filter setting 36
F 4 Auto-preset function 37
F 5 FUNC terminal setting 39
F 6 Fine adjustment of display value 41
F10 Sub display setting 42
F11 Display resolution setting 48
F80 Power saving mode 49
F81 Security code 50
F82 Input of line name 52
F90 Setting of all functions 53
F96 Input signal check 55
F97 Selection of copy function 56
F98 Output check 58
F99 Reset to default settings 60
Other Settings 61
Maintenance 65
Forgotten the security code 65
Troubleshooting 66
Specification 75
Specifications 75
Dimensions 78

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No.PS※※-OMU0003-C
Safety Instructions
These safety instructions are intended to prevent hazardous situations and/or equipment damage.
These instructions indicatethe level of potential hazard with the labels of "Caution", "Warning" or "Danger".
They are all important notes for safety and must be followed in addition to International Standards
(ISO/IEC)*1), and other safety regulations.
*1) ISO 4414: Pneumatic fluid power -- General rules relating to systems.
ISO 4413: Hydraulic fluid power -- General rules relating to systems.
IEC 60204-1: Safety of machinery -- Electrical equipment of machines .(Part 1: General requirements)
ISO 10218: Manipulating industrial robots -Safety.
etc.
Caution
Caution indicates a hazard with a low level of risk which, if not avoided, could
result in minor or moderate injury.
Warning
Warning indicates a hazard with a medium level of risk which, if not avoided,
could result in death or serious injury.
Danger
Danger indicates a hazard with a high level of risk which, if not avoided, will
result in death or serious injury.
Warning
1. The compatibility of the product is the responsibility of the person who designs the
equipment or decides its specifications.
Since the product specified here is used under various operating conditions, its compatibility with specific
equipment must be decided by the person who designs the equipment or decides its specifications
based on necessary analysis and test results.
The expected performance and safety assurance of the equipment will be the responsibility of the
person who has determined its compatibility with the product.
This person should also continuously review all specifications of the product referring to its latest catalog
information, with a view to giving due consideration to any possibility of equipment failure when
configuring the equipment.
2. Only personnel with appropriate training should operate machinery and equipment.
The product specified here may become unsafe if handled incorrectly.
The assembly, operation and maintenance of machines or equipment including our products must be
performed by an operator who is appropriately trained and experienced.
3. Do not service or attempt to remove product and machinery/equipment until safety is
confirmed.
1. The inspection and maintenance of machinery/equipment should only be performed after measures to
prevent falling or runaway of the driven objects have been confirmed.
2. When the product is to be removed, confirm that the safety measures as mentioned above are
implemented and the power from any appropriate source is cut, and read and understand the specific
product precautions of all relevant products carefully.
3. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.
4. Contact SMC beforehand and take special consideration of safety measures if the
product is to be used in any of the following conditions.
1. Conditions and environments outside of the given specifications, or use outdoors or in a place
exposed to direct sunlight.
2. Installation on equipment in conjunction with atomic energy, railways, air navigation, space, shipping,
vehicles, military, medical treatment, combustion and recreation, or equipment in contact with food and
beverages, emergency stop circuits, clutch and brake circuits in press applications, safety equipment or
other applications unsuitable for the standard specifications described in the product catalog.
3. An application which could have negative effects on people, property, or animals requiring special
safety analysis.
4. Use in an interlock circuit, which requires the provision of double interlock for possible failure by using
a mechanical protective function, and periodical checks to confirm proper operation.

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No.PS※※-OMU0003-C
Safety Instructions
Caution
1.The product is provided for use in manufacturing industries.
The product herein described is basically provided for peaceful use in manufacturing industries.
If considering using the product in other industries, consult SMC beforehand and exchange
specifications or a contract if necessary.
If anything is unclear, contact your nearest sales branch.
Limited warranty and Disclaimer/Compliance Requirements
The product used is subject to the following "Limited warranty and Disclaimer" and "Compliance
Requirements".
Read and accept them before using the product.
Limited warranty and Disclaimer
1. The warranty period of the product is 1 year in service or 1.5 years after the product is
delivered, whichever is first.2)
Also, the product may have specified durability, running distance or replacement parts.
Please consult your nearest sales branch.
2. For any failure or damage reported within the warranty period which is clearly our
responsibility, a replacement product or necessary parts will be provided.
This limited warranty applies only to our product independently, and not to any other
damage incurred due to the failure of the product.
3. Prior to using SMC products, please read and understand the warranty terms and
disclaimers noted in the specified catalog for the particular products.
2) Vacuum pads are excluded from this 1 year warranty.
A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.
Also, even within the warranty period, the wear of a product due to the use of the
vacuum pad or failure due to the deterioration of rubber material are not covered by the
limited warranty.
Compliance Requirements
1. The use of SMC products with production equipment for the manufacture of weapons of
mass destruction (WMD) or any other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are governed by
the relevant security laws and regulation of the countries involved in the transaction. Prior
to the shipment of a SMC product to another country, assure that all local rules governing
that export are known and followed.
Caution
SMC products are not intended for use as instruments for legal metrology.
Products that SMC manufactures or sells are not measurement instruments that are qualified by pattern
approval tests relating to the measurement laws of each country.
Therefore, SMC products cannot be used for business or certification ordained by the measurement laws of
each country.

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No.PS※※-OMU0003-C
Operator
This operation manual is intended for those who have knowledge of machinery using pneumatic
equipment, and have sufficient knowledge of assembly, operation and maintenance of such
equipment. Only those persons are allowed to perform assembly, operation and maintenance.
Read and understand this operation manual carefully before assembling, operating or providing
maintenance to the product.
■Safety Instructions
Warning
■Do not disassemble, modify (including changing the printed circuit board) or repair.
An injury or failure can result.
■Do not operate the product outside of the specifications.
Do not use for flammable or harmful fluids.
Fire, malfunction, or damage to the product can result.
Verify the specifications before use.
■Do not operate in an atmosphere containing flammable or explosive gases.
Fire or an explosion can result.
This product is not designed to be explosion proof.
■Do not use the product in a place where static electricity is a problem.
Otherwise it can cause failure or malfunction of the system.
■If using the product in an interlocking circuit:
Provide a double interlocking system, for example a mechanical system
Check the product regularly for proper operation
Otherwise malfunction can result, causing an accident.
■The following instructions must be followed during maintenance:
Turn off the power supply
Stop the air supply, exhaust the residual pressure and verify that the air is released before performing
maintenance
Otherwise an injury can result.

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No.PS※※-OMU0003-C
Caution
■Do not touch the terminals and connectors while the power is on.
Otherwise electric shock, malfunction or damage to the product can result.
■After maintenance is complete, perform appropriate functional inspections and leak tests.
Stop operation if the equipment does not function properly or there is a leakage of fluid.
When leakage occurs from parts other than the piping, the product might be faulty.
Disconnect the power supply and stop the fluid supply.
Do not apply fluid under leaking conditions.
Safety cannot be assured in the case of unexpected malfunction.
■NOTE
○Follow the instructions given below when designing, selecting and handling the product.
●The instructions on design and selection (installation, wiring, environment, adjustment, operation,
maintenance, etc.) described below must also be followed.
Product specifications
The direct current power supply to be used should be UL approved as follows:
Circuit (of Class 2) which is of maximum 30 Vrms (42.4 V peak), with UL1310 Class 2 power supply unit or UL1585
Class 2 transformer.
The product is a UL approved product only if it has a mark on the body.
Use the specified voltage.
Otherwise failure or malfunction can result.
Do not exceed the specified maximum allowable load.
Otherwise it can cause damage or shorten the lifetime of the Pressure switch.
Design the product to prevent reverse current when the circuit is opened or the product is forced to operate for
operational check.
Reverse current can cause malfunction or damage to the product.
Input data to the Pressure switch is not deleted, even if the power supply is cut off.
(Writing time: 10,000 times, Data duration: 20 years after power off)
Use the clean air.
This can cause operating failure.
If compressed air containing condensate is used, install an air dryer or drain catch before the filter and perform
drainage regularly.
If drainage is not performed regularly and condensate enters the secondary side, it can cause operating failure of
pneumatic equipment.
If regular drainage is difficult, the use of a filter with an auto drain is recommended.
Applicable fluid is air, inert gases and incombustible gases.
Do not use a fluid containing chemicals, synthetic oils including organic solvent, salt and corrosive gases.
Otherwise, damage to the product and malfunction can result.
Check the details of the specifications before using.
Use the specified measurement flow rate and operating pressure.
Otherwise it can cause damage to the pressure switch or inability to measure correctly.
Reserve a space for maintenance.
Allow sufficient space for maintenance when designing the system.

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No.PS※※-OMU0003-C
●Product handling
Installation
Tighten to the specified tightening torque.
If the tightening torque is exceeded the mounting screws and brackets may be broken.
If the tightening torque is insufficient, the product can be displaced and loosen the mounting screws.
Do not apply excessive stress to the product when it is mounted with a panel mount.
Otherwise damage to the product and disconnection from the panel mount can result.
Be sure to ground terminal FG when using a commercially available switch-mode power supply.
Do not drop, hit or apply shock to the Pressure switch.
Otherwise damage to the internal parts can result, causing malfunction.
Do not pull the lead wire forcefully, not lift the product by pulling the lead wire. (Tensile force 35 N or less)
Hold the body when handling to avoid the damage of the Pressure switch which lead to cause the failure and malfunction.
For piping of the Pressure switch, hold the piping with a spanner on the metal part of the piping (Piping
attachment).
Holding other part with spanner leads to damage the Pressure switch.
Eliminate any dust left in the piping by air blow before connecting the piping to the product.
Otherwise it can cause damage or malfunction.
Do not insert metal wires or other foreign matter into the pressure measurement port.
It can damage the pressure sensor causing failure or malfunction.
Never mount a Pressure switch in a location that will be used as a foothold.
The product may be damaged if excessive force is applied by stepping or climbing onto it.
If the entering of foreign material to the fluid is possible, install and pipe the filter or the mist separator to
the inlet to avoid failure and malfunction.
Wiring
Do not pull the lead wires.
In particular, never lift a Pressure switch equipped with fitting and piping by holding the lead wires.
Otherwise damage to the internal parts can result, causing malfunction or to be off the connector.
Avoid repeatedly bending or stretching the lead wire, or placing heavy load on them.
Repetitive bending stress or tensile stress can cause the sheath of the wire to peel off, or breakage of the wire.
If the lead wire can move, fix it near the body of the product.
The recommended bend radius of the lead wire is 6 times the outside diameter of the sheath, or 33 times the
outside diameter of the insulation material, whichever is larger.
Replace the damaged lead wire with a new one.
Wire correctly.
Incorrect wiring can break the Pressure switch.
Do not perform wiring while the power is on.
Otherwise damage to the internal parts can result, causing malfunction.
Do not route wires and cables together with power or high voltage cables.
Otherwise the product can malfunction due to interference of noise and surge voltage from power and high voltage
cables to the signal line. Route the wires (piping) of the product separately from power or high voltage cables.
Confirm proper insulation of wiring.
Poor insulation (interference from another circuit, poor insulation between terminals, etc.) can lead to excess
voltage or current being applied to the product, causing damage.
Design the system to prevent reverse current when the product is forced to operate for operational check.
Depending on the circuit used, insulation may not be maintained when operation is forced, allowing reverse current
to flow, which can cause malfunction and damage the product.
Keep wiring as short as possible to prevent interference from electromagnetic noise and surge voltage.
Do not use a cable longer than 30 m.
Wire the DC(-) line(blue) as close as possible to the power supply.
When analog output is used, install a noise filter (line noise filter, ferrite element, etc.) between the
switch-mode power supply and this product.
Environment
Do not use the product in area that is exposed to corrosive gases, chemicals, sea water, water or steam.
Otherwise failure or malfunction can result.

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No.PS※※-OMU0003-C
Do not use in a place where the product could be splashed by oil or chemicals.
If the product is to be used in an environment containing oils or chemicals such as coolant or cleaning solvent,
even for a short time, it may be adversely affected (damage, malfunction, or hardening of the lead wires).
Do not use in an area where surges are generated.
If there is equipment which generates a large amount of surge (solenoid type lifter, high frequency induction
furnace, motor, etc.) close to the Pressure switch, this may cause deterioration or breakage of the internal circuit of
the Pressure switch. Avoid sources of surge generation and crossed lines.
Do not use a load which generates surge voltage.
When a surge-generating load such as a relay or solenoid is driven directly, use a Pressure switch with a built-in
surge absorbing element.
The product is CE marked, but not immune to lightning strikes. Take measures against lightning strikes
in the system.
Mount the product in a place that is not exposed to vibration or impact.
Otherwise failure or malfunction can result.
Prevent foreign matter such as remnant of wires from entering the Pressure switch.
Take proper measures for the remnant not to enter the Pressure switch in order to prevent failure or malfunction.
Do not use the product in an environment that is exposed to temperature cycle.
Heat cycles other than ordinary changes in temperature can adversely affect the inside of the product.
Do not expose the product to direct sunlight.
If using in a location directly exposed to sunlight, shade the product from the sunlight.
Otherwise failure or malfunction can result.
Keep within the specified fluid and ambient temperatures range.
The fluid and ambient temperatures should be -5 to 50 °C. Operation under low temperature (5 °C or less) leads to
cause damage or operation failure due to frozen moist in the fluid or air.
Protection against freezing is necessary. Air dryer is recommended for elimination of drain and water.
Avoid sudden temperature change even within specified temperature.
Do not operate close to a heat source, or in a location exposed to radiant heat.
Otherwise malfunction can result.
Adjustment and Operation
Turn the power on after connecting a load.
Otherwise it can cause excess current causing instantaneous breakage of the Pressure switch.
Do not short-circuit the load.
Although error is displayed when the Pressure switch load is short circuit, generated excess current lead to cause
the damage of the Pressure switch.
Do not press the setting buttons with a sharp pointed object.
It may damage the setting buttons.
If using the product to detect very small pressure rates, warm up the product for 10 to 15 minutes first.
There will be a drift on the display of approximate 1% immediately after the power supply is turned on, within 10
minutes.
Perform settings suitable for the operating conditions.
Incorrect setting can cause operation failure.
For details of each setting, refer to page 22 to 64 of this manual.
Do not touch the LCD during operation.
The display can vary due to static electricity.
Maintenance
Turn off the power supply, stop the supplied air, exhaust the residual pressure and verify the release of
air before performing maintenance.
There is a risk of unexpected malfunction.
Perform regular maintenance and inspections.
There is a risk of unexpected malfunction.
Perform drainage regularly.
If condensate enters the secondary side, it can cause operating failure of pneumatic equipment.
Do not use solvents such as benzene, thinner etc. to clean the Pressure switch.
They could damage the surface of the body and erase the markings on the body.
Use a soft cloth to remove stains. For heavy stains, use a cloth soaked with diluted neutral detergent and fully
squeezed, then wipe up the stains again with a dry cloth.

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No.PS※※-OMU0003-C
Model Indication and How to Order

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No.PS※※-OMU0003-C
○Accessories/Part numbers
If an option is required independently, order with the following part numbers.
Items
Part No.
Remarks
Bracket A
ZS-46-A1
Self tapping screws: Nominal size 3 x 8L (2 pcs)
Bracket B
ZS-46-A2
Self tapping screws: Nominal size 3 x 8L (2 pcs)
Panel mount adapter
ZS-46-B
-
Panel mount adapter +
Front protective cover
ZS-46-D
-
Lead wire with connector
ZS-46-5L
5 cores, 2 m
Front protective cover
ZS-27-01
-
R1/8 piping adapter
ZS-46-N1
-
NPT1/8 piping adapter
ZS-46-N2
-
One-touch fitting 4 mm straight
ZS-46-C4H
-
One-touch fitting 6 mm straight
ZS-46-C6H
-
One-touch fitting 1/4 inch straight
ZS-46-N7H
-
One-touch fitting 4 mm elbow
ZS-46-C4L
-
One-touch fitting 6 mm elbow
ZS-46-C6L
-
One-touch fitting 1/4 inch elbow
ZS-46-N7L
-

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No.PS※※-OMU0003-C
Summary of Product parts
○Names of individual parts
Operation light: Displays the switch operating condition.
LCD display: Displays the current status of pressure, setting mode, selected display units and error code.
4 types of display can be selected for the main display: Single color of constant red or
green; or switching from red to green or green to red corresponding to the output.
The indication for the sub display is orange.
button: Increases mode and ON/OFF set values.
button: Decreases mode and ON/OFF set values.
button: Press this button to change mode and to confirm settings.
Unit display: Indicates the units currently selected. (Only for display units of kPa and MPa.)

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No.PS※※-OMU0003-C
■Definition and terminology
Term
Definition
A
Analog current output
Refer to "Analog output (function)".
Analog output function
Function to output the voltage or current in proportion to the pressure.
Analog voltage output
Refer to "Analog output (function)".
Auto-preset
Performs pressure setting automatically by detecting the increase and
decrease in pressure. For example, if this function is used for a suction test,
the pressure setting will be completed by performing suction and release of
the workpiece.
Auto-shift
A function to correct the set value of the switch output in accordance with the
applied pressure in case the switch operation is unstable due to pulsation of
applied pressure. This function is used in applications such as vacuum
adsorption. The pressure when a signal is externally input is set as a
reference value with which the pressure that turns the switch on or off can be
shifted.
B
Bottom value display (mode)
Shows the minimum pressure from when the power was supplied to the
current time.
C
Chattering
The problem of the switch output turning ON and OFF repeatedly around the
set value at high frequency due to the effect of pulsation.
Chattering prevention function
A function to delay the response time of switch output in order to prevent
chattering.
Copy function
A function to copy a pressure setting value and function setting (Excludes
finely adjusted displayed values and line names.).
D
Delay time
The setting time from when the pressure applied to the pressure switch
reaches the set value, to when the ON-OFF output actually begins working.
Delay time setting can prevent the output from chattering.
The response time indicates when the set value is 90% in relation to the step
input.
digit (Min. setting unit)
Shows how precisely the pressure can be displayed or set by the digital
pressure switch. When 1 digit = 1 kPa, the pressure is displayed in increments
of 1 kPa, e.g., 1, 2, 3, …, 99, 100.
Digital filter
Function to add digital filtering to the fluctuation of pressure value. Smooth the
fluctuation of displayed value for sharp start up or fall of the pressure.
When the function is valid, digital filtering is reflected to the ON/OFF of the
switch output.
Output chattering or flicker in the measurement mode display can be reduced
by setting the digital filter.
Display accuracy
Shows The maximum deviation between the displayed pressure value and
the true pressure.
Display color
Indicates the color of the number of digital display. Always green, always red,
green (switch OFF) red (switch ON), red (switch OFF) green (switch
ON) are available.
Display resolving power
Indicate in how many the rated pressure range can be divided to display.
(Example: When the value can be displayed down to 0.001 MPa for the
product for 0 to 1 Mpa, the resolution is 1/1000)
Display value fine adjustment
(function)
Displayed pressure value can be adjusted within the range of 5%R.D. (5%
of displayed value). It is used if the true pressure value is known, or to
eliminate differences between the displayed values of different instruments
that are measuring the same pressure.

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No.PS※※-OMU0003-C
Term
Definition
E
Error displayed
The code number displayed, identifying the error detected by the
self-diagnosis function of the pressure switch.
Refer to "Error indication function" on page 74 for details of the errors.
Error output
Switches the switch output to ON/OFF when an error is displayed.
Refer to "List of output modes" on page 33 for operating conditions.
Refer to "Error indication function" on page 74 for details of the errors.
F
F.S.
(full span/full scale)
Abbreviation of full span and full scale; difference between the minimum and
maximum rated pressure values. means the maximum fluctuation range of
the pressure switch rated value.
For example, when the rated pressure range is -0.100 to 1.000 [MPa]:
F.S. = 1.000 - (-0.100) = 1.100 [MPa]
(Reference: 1%F.S. = 1.100 x 0.01 = 0.011 [MPa])
Fine adjustment mode
Refer to "Display value fine adjustment (function)".
Fluid contact part (or wetted
part)
Part of the pressure switch which contacts detected fluid. Pressure sensor,
seal and fitting are included.
Function selection mode
A mode in which setting of functions is performed. It is a separate menu from
the pressure setting. If any function settings need to be changed from the
factory default, each setting can be selected with "F".
The setting items are: operation mode, output type, display color, digital filter,
use of auto preset, analog/auto shift/copy, display value fine adjustment, sub
screen display, display resolution, use of power saving mode and use of
security code.
H
Hysteresis
Difference between the points at which the pressure switch is turned ON and
OFF.
Hysteresis mode
Refer to the "List of output modes" on page 33.
I
Insulation resistance
Insulation resistance of the product. The resistance between the electrical
circuit and the case.
K
Key-lock function
Function that prevents changes to the settings of the Pressure switch
(disables button operation).
L
Load impedance
Refer to "Max. load impedance".
M
Manual setting
Manual pressure setup without using auto preset.
This term is used to distinguish between manual and auto preset pressure
setup.
Master Pressure switch
A Pressure switch whose settings are copied when using the copy function.
Maximum applied voltage
The maximum voltage that can be connected to the output of an NPN device.
Maximum load current
The maximum current that can flow to the output (output line) of the switch
output.
Max. (Min.) load impedance
The maximum (minimum) load (resistance value and impedance) which can
be connected to the output (output wire) of the analog current output.
Measurement mode
Operating condition in which pressure is being detected and displayed, and
the switch function is working.
Min. setting unit
Refer to "digit".
N
Normal output
One of the switch output types. In hysteresis mode the switch output is turned
ON when pressure equal to or greater than the switch output set value is
detected. In window comparator mode, the switch output is turned ON when
pressure between the switch output set values (P1L to P1H) is detected.
(Refer to the "List of output modes" on page 33.)

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No.PS※※-OMU0003-C
Term
Definition
O
Operation light
A light that turns on when the switch output is ON.
Operation mode
Hysteresis mode, window comparator mode, Error output or Output off can be
selected.
Output impedance
The resistance value of a component between the voltage output element and
the analog voltage output. It is indicated as a resistance value which is
converted in accordance with the condition in which resistance is directly
connected to the voltage output element. There may be an error in the output
voltage depending on this output impedance and the input impedance of
customers' equipment. (example: If the Pressure switch with output impedance
of 1kΩ is connected to theA/D converter to detect the analog output of 5V, the
detected voltage by theA/D converter becomes 5(V) x1(MΩ)/(1(kΩ) + 1(MΩ))
≒4.995(V), and there is an error of approximate 0.005 V).
Output style
The operation principle of the switch output. Normal output and reverse output
can be selected.
Please refer to the" List of output modes" on page 33 operating conditions.
P
Peak value display (mode)
Shows the maximum pressure from when the power was supplied to the
current time.
Port size
The diameter of the connecting part of the switch for connecting with the
object to be measured.
Power saving mode
Operating mode in which the digital display turns off and power consumption
is reduced.
Pressure setting
The set pressure value that determines the point at which the pressure switch
turns ON and OFF.
Proof pressure
Pressure limit that if exceeded will result in mechanical and/or electrical
damage to the product.
R
R.D.
Current read value
For example, when the display value is 1.000[MPa], 5%R.D. is 5% of
1.000[MPa], which becomes 0.05[MPa]. When the display value is
0.800[MPa], 5%R.D. is 5% of 0.800[MPa], which becomes 0.04[MPa].
Rated pressure range
The pressure range within which the product will meet all published
specifications.
Values outside of this range can be set as long as they are within the set
pressure range, but the specifications cannot be guaranteed.
Repeatability
Variation in repeated measurement of pressure display or ON-OFF output
point when the pressure changes at 25 centigrade.
Residual voltage
The difference between the ideal ON voltage and the actual voltage when the
switch output is on. Varies with load current. Ideally should be 0 V.
Resolution
Refer to "Display resolution".
Reversed output
One of the switch output types. In hysteresis mode the switch output is turned
ON when pressure less than or equal to the switch output set value is
detected. In window comparator mode, the switch output is turned ON when
pressure is outside the switch output set values (n1L to n1H) is detected.
(Refer to the "List of output modes" on page 33.)
Ripple
A type of chattering.

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No.PS※※-OMU0003-C
Term
Definition
S
Set pressure range
The pressure range that can be set for switch output.
Slave Pressure switch
A Pressure switch whose settings are copied to when using the copy function.
Switch output
Sometimes referred to as "ON-OFF output".
U
Units selection function
A function to change the units in which the measured pressure value is
displayed. The display units can only be changed if the product is equipped
this function. It is not possible to purchase the product with this function if the
product is used in Japan.
The product for Japan is displayed in SI only.
W
Window comparator mode
An operating mode in which the switch output is turned on and off depending
on whether the flow is inside or outside the range of two set values.
(Refer to the "List of output modes" on page 33.)
Withstand voltage
A measure of the product’s resistance to a voltage applied between the
electrical circuit and case. Durability in withstanding voltage. The product may
be damaged if a voltage over this value is applied.
(The withstand voltage is not the supply voltage used to power the product.)
Z
Zero-clear function
This function to adjust the displayed pressure to zero.

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No.PS※※-OMU0003-C
Mounting and Installation
■Installation
○Mounting with bracket
●Mount the bracket to the body with mounting screws (Self tapping screws: Nominal size 3 x 8L (2 pcs)),
then set the body to the specified position.
: Tighten the bracket mounting screws to a torque of 0.5±0.05 Nm.
Self tapping screws are used, and should not be re-used several times.
•Bracket A (Part No.: ZS-46-A1)
•Bracket B (Part No.: ZS-46-A2)

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No.PS※※-OMU0003-C
○Mounting with panel mount adapter
●Mount part (a) to the front of the body and fix it. Then insert the body with (a) into the panel until (a)
comes into contact with the panel front surface. Next, mount part (b) to the body from the rear and insert
it until (b) comes into contact with the panel for fixing.
•Panel mount adapter (Part No.: ZS-46-B)
Panel mount adapter + Front protective cover (Part No.: ZS-46-D)
: The panel mount adapter can be rotated through 90 degrees for mounting.
How to remove the panel mount adapter
●When removing the digital pressure switch with panel mount adapter from the installation, pull
it forward while expanding the hooks on each side as shown below.
If the panel mount adapter is pulled forward with the hook caught, the product and the
adapter may be damaged.

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No.PS※※-OMU0003-C
■Piping
○Tightening the connection thread
●For connecting to the body (piping specification: -M5)
After hand tightening, apply a spanner of the correct size to the spanner flats of the piping body, and
tighten with a 1/6 to 1/4 rotation.
As a reference, the tightening torque is 1 to 1.5 Nm.
(When replacing the piping adapter ZS-46-N, tighten it using the same method.)
●Piping specification: -01, -N01
After hand tightening, hold the hexagonal spanner flats of the pressure port with a spanner, and tighten
with 2 to 3 rotations.
As a reference, the tightening torque is 3 to 5 Nm.
●Piping specification: -C4H, -C6H, -N7H, -C4L, -C6L, -N7L
First, tighten by hand, then use a wrench appropriate for the hexagon flats of the body to tighten an
additional 1/6 to 1/4 turn.
As a reference, the tightening torque is 1 to 1.5 Nm.

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No.PS※※-OMU0003-C
When tightening, do not hold the pressure switch body with a spanner.

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No.PS※※-OMU0003-C
■Wiring
○Wiring connections
●Connections should be made with the power supply turned off.
●Use a separate route for the product wiring and any power or high voltage wiring. Otherwise, malfunction
may result due to noise.
●If a commercially available switching power supply is used, be sure to ground the frame ground (FG)
terminal. If the switching power supply is connected for use, switching noise will be superimposed and it
will not be able to meet the product specifications. In that case, insert a noise filter such as a line noise
filter/ferrite between the switching power supplies or change the switching power supply to the series
power supply.
○How to use connector
Connector attachment/detachment
●When connecting the connector, insert it straight onto the pins, holding the lever and connector body, and
lock the connector by pushing the lever hook into the concave groove on the housing.
●To detach the connector, remove the hook from the groove by pressing the lever downward, and pull the
connector straight out.
Connector pin numbers