SMC Networks D-M9NV, D-M9 E, D-M9P, D-M9PE, D-M9NEV Operation Manual

No.D-※S-OMJ0004-E

PRODUCT NAME

Solid State Auto Switch

MODEL / Series / Product Number

D-M9##

D-M9#W#

D-M9#E#

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No.D-※S-OMJ0004-E

Contents

Safety Instructions 2
Model Indication and How to Order 9
Summary of Product parts 10

Definition and terminology 11

Mounting and Installation 12

Installation 12
Maintenance 14
Troubleshooting 15
Specifications 23

Dimensions 25

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No.D-※S-OMJ0004-E

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 10218-1992: 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-OMJ0004-E

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-OMJ0004-E

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.

•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.

Caution

•Do not touch terminals and printed circuit board inside the product.

Otherwise it can cause electric shock, malfunction or damage to the product can result.

•After maintenance is complete, perform appropriate functional inspections.

Stop operation if the equipment does not function properly.
Safety cannot be assured in the case of unexpected malfunction.

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No.D-※S-OMJ0004-E

Cylinders or actuators include cylinders, air grippers, rotary actuators, and electrical actuators/cylinders.

Design/Selection

1. Confirm the specifications.

If the product is used with excess load applied or beyond the specification range, this may cause the product to break
or malfunction. We do not guarantee against any damage if the product is used outside of the specification range.

2. Pay attention to the length of time that a switch is ON at an intermediate stroke position.

When an auto switch is placed at an intermediate position of the stroke and a load is driven at the time the piston
passes, the auto switch will operate, but the operating time will be short if the speed is too fast. As a result, the load
may not operate completely. The maximum detectable piston speed is:

V[mm/s] =

Auto switch operating range [mm]

×1000

Time load applied [ms]

3. Take precautions when multiple cylinders/ actuators are used close together.

When multiple auto switch cylinders/actuators are used in close proximity, magnetic field interference may cause the
auto switches to malfunction. Maintain a minimum cylinder separation of 40 mm. (When the allowable interval is
specified for each cylinder series, use the indicated value.)
The auto switches may malfunction due to the interference from the magnetic fields.
Use of a magnetic screen plate (MU-S025) or commercially available magnetic screen tape can reduce the interference
of magnetic force.

4. Ensure sufficient clearance for maintenance activities.

When designing an application, be certain to allow sufficient clearance for maintenance.

5. Do not mount the cylinder or actuator with the auto switch on a footing.

If work personnel gets on or puts the work personnel’s foot on the footing accidentally, an excessive load is applied to
the cylinder or actuator, causing the cylinder or actuator to break.

6. Design the circuit so that any back-flow current does not flow in if a short-circuit trouble occurs or forced
operation is performed to check the operation.

If a back-flow current occurs, this may cause the switch to malfunction or break.

7. When multiple auto switches are required.

“n” indicates the number of auto switches which can be physically mounted on the cylinders/actuators. Detection
intervals depends on the auto switch mounting structure and set position, therefore some required interval and set
positions may not be available.

8. Limitations on detectable position

There are positions or surfaces (bottom surface of the foot bracket, etc.) where the auto switch cannot be mounted due
to the physical interference depending on the cylinder or actuator mounting status or mounting bracket. Select an
appropriate auto switch setting position where the auto switch does not interfere with the cylinder or actuator mounting
bracket (trunnion or reinforcing ring) after checking it sufficiently.

9. Keep wiring as short as possible.

Be sure to use a wire length of 100 m or less.
When the wire length is long, we recommend the ferrite core is attached to the both ends of the cable to prevent excess
noise. A contact protection box is not necessary for solid state switches due to the nature of this product construction.

10. Do not use a load that generates surge voltage.

If driving a load such as a relay that generates a surge voltage, use a built-in surge absorbing element type device.

11. Pay attention to the internal voltage drop of the auto switch.

Generally, the internal voltage drop of the solid state auto switch is larger than that of the reed auto switch. When the
auto switches (“n” pcs.) are connected in series, the voltage drop is multiplied by “n”. In this case, the auto switches
operate correctly, but the loads may not operate. Additionally, note that the 12 VDC relay does not apply to the auto
switch.

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No.D-※S-OMJ0004-E

12. Pay attention to leakage current.

<2-wire type>
Current (leakage current) flows to the load to operate the internal circuit when in the OFF state.

Operating current of load (OFF condition) > Leakage current

If the criteria given in the above formula are not met, it will not reset correctly (stays ON).
Use a 3-wire auto switch if this specification will not be satisfied.
Moreover, leakage current flow to the load will be “n” times larger when “n” auto switches are connected in parallel.

13. Output operation of the solid state auto switch is not stable for 50 [ms] after powered ON.

In the output operation immediately after powered ON or AND connection operation, the input device (PLC or relay,
etc.) may judge the ON position as OFF output or the OFF position as ON output.
So, please make the setting on the equipment so that the input judgement signal is set disabled for 50 [ms] immediately
after powered ON or AND connection.
When using SMC’s AHC system (Auto Hand Changing System) Series MA, please also make this setting.

Mounting/Adjustment

1. Do not drop or bump.

Do not drop, bump, or apply an excessive impact (300 m/s2 or more for reed auto switches, 1000 m/s2 or more for solid
state auto switches) while handing the auto switch. It may cause the auto switch to break or malfunction.

2. Observe the proper tightening torque for mounting an auto switch.

When an auto switch is tightened beyond the range of tightening torque, auto switch mounting screws, auto switch
mounting brackets or auto switch may be damaged.
On the other hand, tightening below the range of tightening torque may allow the auto switch to slip out of position.

3. Do not carry a cylinder by the auto switch lead wires.

This may cause disconnection of the lead wire or the internal element to break.

4. Do not use screws other than the set screws installed on the auto switch body to secure the auto switch.

If using other screws, auto switch may be damaged.

5. Mount an auto switch at the center of the operating range.

In the case of 2-color display auto switch, mount it at the center of the green LED illuminating range.
Adjust the mounting position of the auto switch so that the piston stops at the center of the operating range.
(The mounting position shown in the catalog indicates the optimum position at stroke end.)
If mounted at the end of the operating range (around the borderline of ON and OFF), operation will be unstable
depending on the operating environment. Also there are some cylinders or actuators with individual setting methods for
auto switches. If so, mount it in accordance with the indicated method.

Even if 2-color indication solid state auto switches are fixed at a proper operating range (the green light lights up),
the operation may become unstable depending on the installation environment or magnetic field disturbance.
(Magnetic body, external magnetic field, proximal installation of cylinders with built-in magnet and actuators,
temperature change, other factors for magnetic force fluctuation during operation, etc.)

6. Check the actual actuation status and adjust the auto switch mounting position.

According to the installation environment, the cylinder or actuator may not operate even at its proper mounting position.
Even when setting at a midpoint of the stroke, check the actuation status and make the adjustment in the same
manner.

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No.D-※S-OMJ0004-E

Wiring

1. Confirm proper insulation of wiring.

If there is any improper insulation (mixed contact with other circuit, grounding fault, or improper insulation between
terminals, etc.) in the wiring, an over-current flows in, causing the auto switch to break.

2. Wire separately from power lines or high voltage lines, avoiding parallel wiring or wiring in the same conduit
with these lines.

If an inrush current is generated, the noise may cause the auto switch to malfunction.

3. Avoid repeatedly bending or stretching lead wires.

Broken lead wires will result from repeatedly applying bending stress or stretching force to the lead wires.
Stress and tensile force applied to the connection between the lead wire and auto switch increases the possibility of
disconnection.
Keep the lead wire from moving especially in the area where it connects with the auto switch.

4. Be certain to connect the load before power is applied.

<2-wire type>
If the power is turned ON when an auto switch is not connected to a load, the auto switch will be instantly damaged
because of excess current (short circuit).
It is the same as when the 2-wire brown lead wire (+, output) is directly connected to the (+) power supply terminal.

5. Carry out the wiring work after shutting down the power.

If the wiring work is performed with the power turned ON, this may cause electric shock, malfunction, or damage to the
auto switch.

6. Do not allow short-circuit of loads.

Otherwise, the protection circuit will be activated and the indicator light will flash.
At the same time, the auto switch will be damaged.

7. Avoid incorrect wiring.

1) If connections are reversed on a 2-wire type auto switch, the auto switch will not be damaged if protected by a

protection circuit, but the auto switch will always stay in an ON state.
However, it is still necessary to avoid reversed connections, since the auto switch could be damaged by a load short
circuit in this condition.

2) If connections are reversed (power supply line + and power supply line –) on a 3-wire type auto switch, the auto

switch will be protected by a protection circuit. However, if the power supply line (+) is connected to the blue wire and
the power supply line (–) is connected to the black wire, the auto switch will be damaged.

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No.D-※S-OMJ0004-E

Operating Environment

1. Never use in an atmosphere of explosive gases.

The structure of auto switches is not intended to prevent explosion. This may lead to explosion hazard.
Contact SMC for information regarding explosion proof compliant product.

2. Do not use in an area where a magnetic field is generated.

Auto switches will malfunction or magnets inside cylinders/ actuators will become demagnetized. (Please consult with
SMC if a magnetic field resistant auto switch can be used.)

3. Do not use in an environment where the auto switch will be continually exposed to water.

Although auto switches satisfy the IEC standard IP67specificaitons, do not use in applications continually exposed to
water splashing or spray. This may cause improper insulation or malfunction.

4. Do not use in an environment with oil or chemicals.

If auto switches are used in an environment containing coolant, cleaning solvent, various oils, or chemicals even for a
short period of time, this may adversely affect the auto switches, resulting in improper insulation, malfunction due to
swelling of the potting resin, or hardening of the lead wires.

5. Do not use in an environment with temperature cycles.

If temperature cycles other than normal temperature changes are applied, this may adversely affect the insides of the
auto switches.

6. Avoid accumulation of iron waste or close contact with magnetic substances.

If many iron particles, such as cutting chips or spatters accumulate around a cylinder with the auto switches or an
actuator or if a magnetic substance (attracted by a magnet) is put close to a cylinder with the auto switch or an actuator,
the magnetic force inside the cylinder or actuator loses, causing the auto switch to malfunction.

7. Do not use in an area where surges are generated.

If there is an equipment unit (electromagnetic lifter, high-frequency induction furnace, motor, or radio, etc.) that
generates large surges or electromagnetic waves around cylinders with solid state auto switches or actuators, this may
cause the circuit element inside the auto switch to break.

8. Please contact SMC concerning water resistance, elasticity of lead wires, usage at welding sites, etc.

9. Do not use in direct sunlight.

10. Do not mount the product in locations where it is exposed to radiant heat.

11. Take appropriate measures against the lightning surge on the equipment side as the auto switches do not
have any lightning surge resistance specified in the CE marking.

Maintenance

1. Perform the following maintenance periodically in order to prevent possible danger due to unexpected auto
switch malfunction.

1) Secure and tighten auto switch mounting screws.

If screws become loose or the mounting position is dislocated, retighten them after readjusting the mounting
position.

2) Confirm that there is no damage to lead wires.

To prevent faulty insulation, replace auto switches or repair lead wires, etc., if damage is discovered.

3) Confirm the detection setting position.

• Red light of 1-color display auto switch
Confirm that the set position stops at the center of the operating range (red display area).

• Confirm the green light and position of the 2-color display auto switch.
Confirm that the set position stops at the center of the appropriate operating range (green display area).
If the auto switch shows a red LED while in the ON/OFF position, the mounting position is not correct. Re-adjust the
auto switch to the optimum position at the center of the operating range.

Some cylinders or actuators indicate the individual setting procedures for the auto switch. If so, set the mounting
position using the individual setting procedures.

2. Do not use solvents such as benzene, thinner etc. to clean the product.

They could damage the surface of the body and erase the markings on the body. For heavy stains, use a cloth lightly
dampened with diluted neutral detergent, then wipe up any residue with a dry cloth.