SMC Networks D-MH1AD Series User manual

No.D-※S-OMA1021
PRODUCT NAME
Analogue Auto Switch and
Display Sensor Monitor
MODEL / Series / Product Number
D-MH1AD#
D-MH1B#

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No.D-※S-OMA1021
Table of Contents
Safety Instructions 2
Model Indication and How to Order 10
Names and Functions of Product Parts 11
Definition and terminology 12
Mounting and Installation 15
Installation method 15
Wiring method 17
Analogue Auto Switch Overview 21
Display Sensor Monitor Overview 25
Display Sensor Monitor Settings Overview 30
Initial Settings 32
3 Step Setting Mode 34
Simple Setting Mode 35
Function Selection Mode 36
What is the function selection mode? 36
Factory default setting 36
F0 Switch output specification switchover/setting mode switchover functions 38
F1 SP1 setting 41
F2 SP2 setting 43
F3 SP3 setting 43
F7 Digital filter setting 44
F10 Sub display setting 45
F11 Display resolution setting 48
F80 Power saving mode setting 49
F81 Security code input setting 50
F90 Setting of all functions 52
F97 Copy function selection 54
F98 Output check 56
F99 Reset to default settings 58
Other Settings 59
Maintenance 63
Forgotten the Security Code 63
Troubleshooting 64
Specifications 71
Dimensions 73

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No.D-※S-OMA1021
Safety Instructions
These safety instructions are intended to prevent hazardous situations and/or equipment damage.
These instructions indicate the 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.D-※S-OMA1021
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.

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No.D-※S-OMA1021
■Operators
(1) This Operation Manual is intended for persons who perform assembly, operation and maintenance
or inspection of machinery using pneumatic equipment with sufficient knowledge and experience
with such equipment.
Only such persons are allowed to perform assembly, operation and maintenance or inspection.
(2) Read and understand this Operation Manual carefully before performing assembly, operation and
maintenance or inspection.
■Safety Instructions
Warning
■Do not disassemble, modify (including replacing the circuit board) or repair.
Otherwise, an injury or failure may result.
■Do not use outside the specifications.
Do not use with gases or fluid that are flammable or have an effect on the human body.
Using the product outside the specifications may result in fire, malfunction, or damage to the product.
Check the specifications before using the product.
■Do not use in an environment where there are flammable or explosive gases or dust is flowing.
Otherwise, a fire or explosion may result.
The product is not designed to be explosion proof.
■Do not use in a place where charging of static electricity is a problem.
Otherwise, failure or malfunction of the system may result.
■When using the product for an interlock circuit:
•Provide multiple interlocking with another system (mechanical protection system, etc.).
•Perform inspection to ensure that the product is operating properly.
Otherwise, an accident due to malfunction may result.
■Before performing maintenance or inspection:
•Turn off the power supply.
•Stop the air supply, exhaust the compressed air in piping and verify that the air is released to atmosphere.
Otherwise, an injury may result.

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No.D-※S-OMA1021
Caution
■Do not touch the terminals or connectors when energized.
Otherwise, an electric shock, malfunction or damage to the product may result.
■After completing maintenance or inspection, perform appropriate functional inspections.
Stop the operation in the event of an abnormality such as when the equipment does not operate properly.
Otherwise, safety may not be ensured due to an unexpected malfunction.
A cylinder/actuator refers to an actuator, including a cylinder, air gripper, rotary actuator, and electric
actuator cylinder.
Hereafter, an "analogue auto switch" is stated as an "analogue ASW," and a "display sensor monitor" is stated
as a "sensor monitor".
Design Precautions and Selection
Warning
(1) Review the specifications.
Using the product under a load not intended to be applied or outside the specifications may cause damage or
malfunction of the product.
Product warranty is not guaranteed if the product is used outside the specifications.
(2) Caution for using the product in an interlock circuit
When using the product in an interlock signal requiring high reliability, provide a double interlock system, such as
using a mechanical protection function in preparation for failure or using a non-analogue ASW (sensor) in
combination.
Inspect the product periodically to confirm that it operates correctly.
(3) Do not disassemble, modify (including changing the printed circuit board) or repair.
Otherwise, an injury or accident may result.
Caution
(1) The product cannot be used for length measurement.
An analogue ASW outputs a magnetic field from the cylinder magnet as an analogue value, and therefore the output is
not linear to the cylinder stroke.
In addition, there are individual differences in the magnetic force of magnets. As such, the output values from
magnets are different even if they are mounted to the same position on the same type actuator.
(2) The resolution and repeatability vary depending on the position relationship between the magnet and the
sensor.
The resolution and repeatability decrease near the maximum or minimum peak of analogue output. Use them by
mounting them to the recommended positions. If precision in repeatability is required, configure settings so that the
analogue output at the output position will be close to 3 V (in between peaks).
(3) Analogue output fluctuates due to the following factors.
Analogue output fluctuates in an environment which is affected by the ambient temperature, mounting orientation
(terrestrial magnetism), wobbling (mechanical factor, supply pressure fluctuation, etc.), electrical noise disturbance,
magnetic body (iron screw, iron powder, etc.), or a magnetic force. It is recommended to use non-magnetic
materials for magnetic bodies, bolts, and so on in the surroundings.
When using the product for an application where the ambient temperature or mounting orientation changes greatly, it
is recommended to set the ON point under conditions that are close to the actual operating environment and set a
wider ON width or hysteresis.

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No.D-※S-OMA1021
(4) Take precautions when multiple cylinders or actuators are used close together.
When using two or more cylinders or actuators with a built-in magnet in close proximity to each other arranged in
parallel, design so that they will maintain a separation distance of at least 40 mm.
(If the separation distance is specified for each of cylinder/actuator series, use that value.)
The accuracy of the analogue ASW may be reduced and it may malfunction due to the magnetic field interference
between them.
(5) Reserve a space for maintenance.
Design by taking into account the space required for maintenance or inspection.
(6) Never mount the cylinder/actuator in a place to be used as a foothold.
It may be damaged if an excessive load is applied by stepping or climbing onto it.
(7) Design so that reverse current is prevented from entering when the wire breaks down or the product is
forced to operate for operation checks.
Reverse current may cause a malfunction or damage of the switch.
(8) Limit of the detectable position
There are mounting positions or surfaces where the product cannot be mounted due to physical interference (e.g.
bottom surface of the foot bracket), depending on the mounting conditions or the mounting bracket of the
cylinder/actuator.
Select the product after thoroughly confirming that the mounting bracket (e.g. trunnion, reinforcement ring), joint,
etc. for the cylinder/actuator will not interfere with the product at the setup position.
(9) Do not use a load which generates a surge voltage.
When a surge-generating load such as a relay is driven, use a device with built in surge protection.
(10) The analogue ASW output voltage will be unstable for 50 [ms] after power is supplied. The sensor
monitor starts the switch output operation within approximately 200 [ms] after power is supplied.
Please consider the above-mentioned time before using the product.
(11) Provide a rotation stopper for the cylinder/actuator piston rod.
Use a guide as a measure to stop the piston rod rotation or select an SMC product with an anti rotation function.
The output voltage may fluctuate without the rotation stopper.
With some cylinders, the magnet may rotate even when the piston rod does not rotate. The magnet of some cylinder
models with a guide also rotates. Contact SMC for details.
(12) Under the following operating conditions, the analogue output voltage and the value indicated on the
sensor monitor may fluctuate.
If warm-up (about 10 to 15 min) is not performed, there is wobbling (mechanical factor, floating joint, etc.), or using in
a disturbance environment or an environment which is affected by the magnetic force, such as a magnetic body (iron,
screw) or the mounting orientation (terrestrial magnetism), the accuracy may be reduced.
It is recommended to use non-magnetic bodies for magnetic bodies, bolts, etc. in the surroundings.
(13) Data input to the sensor monitor will not be deleted even if the power supply is cut off. However, there is a
limit in the number of times data can be written.
(Write limit: 10,000 cycles, Data retention period: 20 years)

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No.D-※S-OMA1021
Mounting and Adjustment
Caution
(1) Do not drop or apply an impact.
Otherwise, components inside the product may be damaged, resulting in malfunction of the product.
(2) Observe the tightening torque for mounting.
If tightened at a torque higher than the specified torque range (0.15 to 0.25 N·m), the cylinder/actuator body,
mounting screws, mounting brackets, and product body, etc. may be damaged.
If tightened at a torque below the specified tightening torque range, the mounting position of the analogue ASW may
be misaligned.
(3) Do not carry the cylinder/actuator or lift the product by holding the lead wire of the analogue ASW or the
display.
Doing so may cause the lead wire or internal elements to be damaged.
(4) Do not use screws other than the set screws installed in the analogue ASW to fix it.
Using screws that are not specified may cause the product or the cylinder/actuator to be damaged.
(5) Adjust the mounting position of the analogue ASW after checking the actual operating conditions.
Afull stroke may not be detected even with a cylinder/actuator for which a full stroke is detectable depending on the
setting environment. In addition, the resolution may be deteriorated.
(6) If using a commercially available switching power supply, be sure to ground the frame ground (FG)
terminal.
Wiring
Caution
(1) Check the insulation of the wiring.
Any insulation failure on the wiring (short circuits, faulty ground connections, improper insulation between terminals,
etc.) may damage the product due to an over current.
(2) Do not use parallel wiring with the power lines or high voltage lines and use a separate wiring route.
Otherwise, the product may malfunction due to noise because of inrush current.
(3) Make sure that the lead wire is not bent repeatedly and a tensile force is not applied to the lead wire.
Broken lead wires will result if repeated bending stresses or tensile forces are applied to the lead wires.
Stress and tensile forces applied to the connection between the lead wire and the position sensor increases the
possibility of disconnection.
Secure the lead wire to reduce any movement in the area where the lead wire connects with the position sensor.
(4) Be sure to shut off the power supply before performing wiring.
If performing wiring when energized, there is a risk of electric shock, malfunction, or damage to the product.
(5) Do not short-circuit loads.
Otherwise, there is a risk of damage to the product.
(6) Prevent mis wiring.
The product may malfunction or be damaged depending on the mis wiring condition.
(7) Make wiring as short as possible to prevent noise and surges from entering the product.
Use a wiring length of less than 30 m.
Also, wire the DC (-), line (blue) as close as possible to the power supply.

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No.D-※S-OMA1021
Operating Environment
Warning
(1) Do not use in an environment where there is explosive gases or dustpresent.
The analogue ASW and the sensor monitor are not explosion proof. Fire or an explosion may result.
Caution
(1) Do not use in a place where magnetic fields are generated.
Using the product in such a place may cause a malfunction or deterioration in the accuracy of the product.
(2) Do not use in water, an environment where condensation occurs, or other environments where water is
constantly sprayed.
Although the analogue ASW satisfies the IEC standard IP67 specifications, avoid using it in an environment where
water is always sprayed on the position sensor. Otherwise, improper insulation or malfunction may be caused.
(The monitor satisfies the IEC standard IP40 specifications).
(3) Do not use in an environment where oil content or chemicals are present.
If the product is used in an environment where various oils and chemicals, such as a coolant and cleaning solvent,
are present even for a short time, it may be adversely affected (insulation failure, malfunction due to swelling of resin,
or hardening of the lead wires).
(4) Do not use in an environment where there are cyclic temperature changes.
If exposed to cyclic temperature patterns other than ordinary changes in the temperature, the product may be
adversely affected.
(5) Pay attention to the accumulation of iron debris or close contact with magnetic bodies.
If a large amount of iron powders such as machining chips or welding spatter has accumulated or a magnetic body
(thing that attaches to a magnet) is brought into close proximity of the cylinder/actuator with magnet built in, it may
cause the analogue ASW to malfunction due to a weakening of the magnetic force inside the cylinder/actuator.
(6) Do not use in an area where surges are generated.
If there is equipment (solenoid lifter, high frequency induction furnace, motor, radio, etc.) which generates a large
amount of surge or electromagnetic waves around the cylinder/actuator with analogue ASW, a damage to the circuit
elements inside the product may be caused.
(7) In a place exposed to direct sunlight, shield the product from sunlight.
(8) Do not use in a place where there is a heat source or exposed to radiant heat.
(9) There is no resistance to lightening surge according to the CE marking. Take measures against lightning
surges in the system.
(10) Do not use in a welding environment.
Using the product in such a place may cause a malfunction or deterioration in the accuracy of the product.
(11) Do not use a load which generates a surge.
When a surge voltage-generating load such as a relay or solenoid valve is driven directly, use a product type with a
built-in surge absorbing element.
(12) Keep within the specified ambient temperature range.
The ambient temperature range is −10 to 60°C for the analogue ASW and 0 to 50°C for the sensor monitor. If used
at a low temperature (5°C or below), the product may be damaged or malfunction due to frozen moisture in the air.
Take freezing prevention measures to prevent it from occurring.
Avoid abrupt temperature changes even within the specified temperature range.
(13) Do not use in an environment subject to radiation stress.
Because radiation resistance is not incorporated, a malfunction of the product or a damage to the circuit elements
inside the product may be caused.

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No.D-※S-OMA1021
Maintenance
Warning
(1) Removal of equipment and supplying and exhausting the compressed air
When removing the equipment, first confirm that measures, such as drop prevention for driven objects and safe
lock out, are in place, shut off the air supplied and power supply of the facilities, and exhaust the compressed air
inside the system.
When restarting the equipment, confirm that a projection prevention is in place, and then carefully restart the
equipment.
(2) Never touch the terminals while the power is on.
Otherwise electric shock, malfunction or damage to the position sensor may result.
(3) The analogue ASW may malfunction unexpectedly, making it impossible to confirm safety. Therefore,
perform the following maintenance or inspection regularly.
1) Retightening of the mounting screws
If the screws have become loose and the required mounting position has been lost, re-adjust the product to the
correct mounting position and re-tighten the screws.
2) Checking the presence or absence of damage to the lead wire
Damage to the lead wire causes faulty insulation. If such damage is found, replace the analogue ASW or repair
the lead wire.
Caution
(1) Do not use benzene, thinner or alcohol, etc. to clean the product.
Otherwise, the surface may be damaged or the product marking may be erased.
For a heavy stain, use a cloth that has been soaked with diluted neutral detergent and fully squeezed to wipe off the
stain and wipe the surface again with a dry cloth.
(2) Turn OFF the power supply before performing maintenance or inspection.
Otherwise, unexpected malfunction of the equipment may be caused.

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No.D-※S-OMA1021
Model Indication and How to Order
○Analogue auto switch
○Display sensor monitor
○Options/Part numbers
If an option is required independently, order using the following part numbers.
Description
Part number
Remarks
Bracket
ZS-46-A1
With self tapping screw: Nominal diameter 3 x 8L (2 pcs.)
Panel mount adapter
ZS-46-B
-
Panel mount adapter
+ Front protective cover
ZS-46-D
-
Front protective cover
ZS-27-01
-
Lead wire with connector
ZS-46-5L
5 cores, 2 m
Sensor connector
ZS-28-C
ZS-28-CA-2
: When ordered with the above option part number, the ZS-28-C is
included with the product.

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No.D-※S-OMA1021
Names and Functions of Product Parts
○Part names (Analogue auto switch)
•D-MH1AD#
•D-MH1ADV#
○Part names (Display sensor monitor)
Operation LED: Displays the switch operating condition.
LCD display: Displays the current analogue voltage, setting mode status and error code.
The display method can be selected from four types at the top area of the screen: always in
a single red, always in a single green, switching from green to red in conjunction with the
output, and switching from red to green in conjunction with the output.
The bottom area of the screen is displayed in a single orange.
UP button: Use this button to select the mode and increase the ON or OFF set value.
DOWN key: Use this button to select the mode and decrease the ON or OFF set value.
SET button: Press this button to change mode and to confirm settings.

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No.D-※S-OMA1021
■Definition and terminology
Term
Definition
B
Bottom hold value display
mode
The minimum voltage value up to the present time.
C
Chattering
A phenomenon of repeatedly turning ON and OFF the switch output at high
frequencies.
Copy from sensor monitor
The sensor monitor at the copy source when using the copy function.
Copy function
A function to copy function settings (excluding settings related to the
operating range).
Copy to sensor monitor
The sensor monitor at the copy destination when using the copy function.
D
Delay time
The setting time from when the signal of the connected analogue ASW
reaches the set value to when the ON-OFF output actually begins working.
Setting the delay time can prevent the output from chattering.
Determinable range
(Analogue ASW)
The range between the maximum and the minimum peaks in the analogue
output waveform when an analogue ASW is mounted to the cylinder, etc.
In this range, the magnet position is uniquely determined for an analogue
value. (Refer to page 21)
Digit
(smallest settable increment)
An increment of voltage display digit on the sensor monitor, indicating how
precisely the voltage can be displayed or set. When 1 digit = 2 [mV], the
value is displayed in increments of 2 [mV], e.g., 2, 4, ..., 98, 100.
Digital filter
A function to add a digital filter to fluctuations in the output signal of the analogue
ASW. The function moderates fluctuations in the indicated value in response to a
sharp rise or fall of the signal. When the function is used, digital filtering applies
to switch output ON or OFF and the analogue response time. Output chattering
or flicker in the measurement mode display can be reduced by setting the digital
filter.
It is 90% response time in relation to the step input.
Display accuracy (Monitor)
An extent of error between the output voltage of the analogue ASW and the
displayed voltage value.
Display colour
The colour of the digits on the digital display.
The display can be selected from four patterns: always green, always red,
green (switch OFF) changing to red (switch ON), or red (switch OFF)
changing to green (switch ON).
Display resolution
(Resolution)
The number of divisions the rated range can be divided and displayed.
Example: If the rated range can be displayed in a 2-mV increment, the
resolution is 2/4000.
E
Error indication
A code displayed on the sensor monitor indicating non-conformance that may
cause the switch to fail detected by the self-diagnostic function of the product.
Refer to "Error Display Function" on page 70 for details of error codes.
F
Function selection mode
A mode used to set various functions. When using the product by changing
the settings from the factory default, each setting can be selected using "F."
Specific settings include the operating range setting, display colour, output
type, output setting mode, digital filter, display resolution, whether or not to
use energy saving mode, and whether or not to use a security code.

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No.D-※S-OMA1021
Term
Definition
H
Hysteresis
A difference between the ON and OFF points of the switch.
A hysteresis is also referred to as hysteresis.
It is a region set outside the ON width on the sensor monitor.
Example: If the output point (SP1) is 2688 mV, the ON width (W_1) is 50 mV,
and the hysteresis (H_1) is 20 mV:
The hysteresis regions of switch output are 2618 to 2638 mV and 2738 to
2758 mV.
High resolution range
(Analogue ASW)
The range where the tilt of analogue output to the cylinder stroke is 0.2 [V/mm] or
more in the analogue output waveform when an analogue ASW is mounted to
the cylinder, etc.
In this range, a minute difference in the cylinder stroke can easily be detected.
(Refer to page 22)
I
Insulation resistance
The insulation resistance of the product itself. The resistance between the
electrical circuit and the enclosure.
K
Key-lock function
A function that prevents changes to the settings (disables button operation).
M
Maximum applied voltage
The maximum applied voltage that can be connected to the NPN output section
(output line) of the sensor monitor.
Maximum load current
The maximum current that can be flown to the switch output section (output line)
of the sensor monitor.
Most sensitive position
(Analogue ASW)
The centre position of the sensor. When the most sensitive position matches the
centre of the cylinder magnet, the output of the analogue ASW is approximately
3 V.
N
Normally closed (N.C.)
If the analogue value is outside the operating range set on the sensor monitor,
the output signal is ON. It is also referred to as the N.C. type.
Normally open (N.O.)
If the analogue value is within the operating range set on the sensor monitor, the
output signal is ON. It is also referred to as the N.O. type.

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No.D-※S-OMA1021
Term
Definition
O
ON width
The ON range of the switch output which is set in a range from minus to plus for
the output point set on the sensor monitor.
Example: If the output point (SP1) is 2688 mV and the ON width (W_1) is 50 mV:
The range of switch output analogue values is 2638 to 2738 mV.
Operating range
A range of switch output on the sensor monitor in response to a voltage signal
of the analogue ASW. In this product, it is the region consisting of the ON width
and hysteresis.
Operation LED
A light that turns ON when the switch output is ON.
Output impedance
A resistance value of components between the voltage output element and
output line in the voltage output of the analogue ASW. The value is converted to
a resistance value in a condition where the resistor is connected in series to the
voltage output element. An error may occur in the output voltage depending on
the output and the input impedance of the customer's connected device.
Example: An attempt to detect a 5 V analogue output by connecting a pressure
switch with 1 kΩ output impedance to an A/D converter with 1 MΩ input
impedance results in an error of approximately 0.005 V because the detection
voltage of that A/D converter is 5 (V) x 1 (MΩ) / (1 (kΩ) + 1 (MΩ)) ≈4.995 (V).
Output point
A setting point to turn ON the switch output on the sensor monitor in response to
a voltage signal of the analogue ASW.
Output setting mode
The number of settable output points can be switched and selected from 2
setting mode and 3 setting mode.
In 2 setting mode, two output points corresponding to OUT1 and OUT2 can be
set. In 3 setting mode, three output points including the output points in 2 setting
mode and an additional simultaneous output of OUT1 and OUT2 can be set.
(Refer to page 28)
P
Peak value display (mode)
The maximum voltage value up to the present time.
Power saving mode
A mode in the sensor monitor function in which current consumption is reduced
by turning off the display.
R
Rated range (Monitor)
The voltage range that satisfies the product specifications.
A value outside the rated range can be set as long as it is within the setting
displayable range, but the specifications are not guaranteed.
Repeatability
The reproducibility of analogue voltage output or of the ON-OFF output point set
on the display at a constant temperature of 25 [°C]. Wobbling of the
cylinder/actuator, deformation of the workpiece itself, magnetic field disturbance,
and the effect of magnetic body in the surroundings are excluded.
Residual voltage
(Internal voltage drop)
A difference between the ideal ON output voltage and the actual output
voltage when the switch output on the sensor monitor is in the ON state. The
residual voltage varies with the flowing load current.
Ideally it should be 0.
Ripple
It refers to a pulsation.
S
Settable range
A voltage range for which an operating range can be set.
Switch output
It is also referred to as switch output (digital output or switch output).
W
Withstand voltage
Ameasure of the product's resistance to a voltage applied between the
electrical circuit and the enclosure. The durability against the voltage of the
product. There is a danger of damaging the product if a voltage above this value
is applied.
(The voltage here is different from the power supply voltage used to operate the
product.)

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No.D-※S-OMA1021
Mounting and Installation
■Installation method
○Analogue auto switch
When mounting the analogue auto switch to the cylinder/actuator, a mounting bracket corresponding to
the cylinder/actuator should be used.
The mounting method depends on the cylinder/actuator type and tube inner diameter.
When mounting a new sensor, confirm that the cylinder/actuator is of the built-in magnet type and then
prepare a mounting bracket corresponding to the cylinder/actuator. Amounting bracket is not necessary
for some sensors.
•Correct tightening torque
When tightening the mounting screws, use a cross head screwdriver with #0 blade.
The tightening torque should be approximately 0.2 ±0.05 N·m.
If the screws are tightened too tightly, the cylinder/actuator or the switch may be damaged.
If the screws are tightened too loosely, it may cause positional misalignment or malfunction during
operation.
: Do not pull out the mounting screws. Also, do not use mounting screws other than those originally mounted.
○Display sensor monitor
•Mounting with bracket
●Mount the bracket to the body using the mounting screws (self tapping screw: Nominal diameter 3 x 8L
(2 pcs.)).
: Tighten the bracket mounting screws to a torque of 0.5 ±0.05 N·m.
Be aware that since self tapping screws are used, they cannot be mounted or removed more than once.
•Bracket (Part No.: ZS-46-A1)

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No.D-※S-OMA1021
○Mounting with panel mount adapter
●Mount part (a) to the front of the body and fix it. Then insert the body into the panel until (a) comes into
contact with the panel front surface.
Next, mount part (b) to the body from the rear of the panel and insert it until (b) comes into contact with
the panel where (b) is fixed.
•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 sensor monitor with panel mount adapter from the equipment, pull
it forward while opening up the hooks on both sides as shown in the figure below.
If the panel mount adapter is pulled forward without opening up the hooks, the sensor
monitor and the panel mount adapter may be damaged.

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No.D-※S-OMA1021
■Wiring method
○Wiring connections
●Perform wiring connection work after turning off the power supply.
●Use a separate route for the product wiring. If wires and cables are routed together with power or high
voltage cables, malfunction may result due to noise.
●If using a commercially available switching power supply, be sure to ground the frame ground (FG)
terminal. If a commercially available switch-mode power supply is connected for use, switching noise will
be superimposed and the product specifications will not be met. 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 a
series power supply.
○Internal circuit and wiring examples
Analogue auto switch
: The figure inside the parentheses () indicates the connector pin number.
Wiring
Definition
Connector pin number
Wire colour
1
Brown
Power supply DC (+)
3
Blue
Power supply DC (−)
4
Black
Analogue voltage (1 to 5) output
Wiring specifications (Pre-wired connector)
M8 3-pin connector
M8 4-pin connector
M12 4-pin connector
: Apre-wired connector cannot directly be connected to the sensor monitor.

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No.D-※S-OMA1021
Display sensor monitor
NPN (2 output) specification
PNP (2 output) specification
Power supply/output connector pin assignment

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No.D-※S-OMA1021
○Connection between the analogue auto switch and the sensor monitor
●Prepare the analogue ASW cable as shown in the figure below.
Sensor connector compliance table
SMC product No. (1 pc.)
Conductor cross sectional area
(mm2)
Outside diameter (O.D.)
(mm)
Colour of cover
ZS-28-C
0.14 to 0.2
0.8 to 1.0
Red
ZS-28-CA-2
0.1 to 0.5
0.9 to 1.0
●Do not cut the insulator.
●Insert connectors with the marked sensor connector numbers and the corresponding cable core colours
as shown in the table below, to the end.
Connector marking No.
Cable core colour
1
Brown (DC (+))
2
Not connected
3
Blue (DC (−))
4
Black (OUT: 1 to 5 V)
●Check the connector Nos. and core colours and that the cables are inserted to the end, and temporarily
connect them by pushing down part A by hand.
●Hold around the centre of part A and push it straight into connector enclosure using pliers, etc.
●The sensor connector cannot be used again after it has been pressure welded once.
If the core wire orders were mistaken or inserting the cables failed, use a new connector.
●If the sensor is not connected correctly, "LLL" may be displayed on the sensor monitor.