SMC Networks ZL112A Series Operating Manual

Document No.ZL-OM01001

PRODUCT NAME

Multistage Ejector

MODEL / Series / Product Number

ZL112A Series

Document No.ZL-OM01001

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Contents

Safety Instructions 2
Model Indication and How-to-Order 7
Names of Parts 8
Operating Environment 9
Mounting and Installation 10
Air Supply 11
Piping 12
Electrical wiring 14
Solenoid valve 15
Vacuum pressure switch 15
Construction 16
Maintenance and Inspection 17
Exhaust from ejector 21
Specifications 22
Circuit diagram 24
Exhaust characteristics, flow characteristics,
time required to reach the specified vacuum, release flow characteristics 25
Flow characteristics curve 26
Troubleshooting 27

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These safety instructions are intended to prevent hazardous situations and/or equipment damage.

These instructions are categorized into three groups, "Caution", "Warning" and "Danger" depending on the level
of hazard and damage, and the degree of emergency. They are all important notes for safety and must be
followed in addition to International Standards (ISO/IEC), Japan Industrial Standards (JIS)

*1)

and other safety

regulations

*2)

.

*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. (Part1: General requirements)
ISO 10218-1992: Manipulating industrial robots -Safety.
JIS B 8370: General rules for pneumatic equipment.
JIS B 8361: General rules for hydraulic equipment.
JIS B 9960-1: Safety of machinery – Electrical equipment for machines. (Part 1: General requirements)
JIS B 8433-1993: Manipulating industrial robots - Safety, etc.
*2) Labor Safety and Sanitation Law, 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.
An operator who is appropriately trained and experienced must perform the assembly, operation and maintenance
of machines or equipment.

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
dropping of driven objects or run-away of machinery/equipment 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. 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 location 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. Check the product regularly in
order to confirm normal operation.

Safety Instructions

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Safety Instructions

Caution

1. The product is provided for use in manufacturing industries.

The product herein described is basically provided for use in manufacturing industries.
If the product is being considered for use 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 within 1.5 years after the product is
delivered. *3)
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 the SMC 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.

*3) 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

When the product is exported, strictly follow the laws required by the Ministry of Economy, Trade and
Industry (Foreign Exchange and Foreign Trade Control Law).

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■Explanation of Symbols

Symbol

Definition

Things you must not do.
Instructions are provided as a drawing or sentence next to the symbol.

Things you must do
Instructions are provided as a drawing or sentence next to the symbol.

■Operator

1. 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.

2. Read and understand this Operation Manual carefully before assembling, operating or providing maintenance to

the product.

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■Safety Instructions

Warning

Disassembly

prohibited

Do not disassemble, modify (including the replacement of board) or repair other than
instructed in this manual.

Otherwise, an injury or failure can result.

Do not

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.

Please check the specifications before use.

Do not

Do not use in an atmosphere containing flammable or explosive gases.

Fire or an explosion can result.
The product is not designed to be explosion proof.

Do not

Do not use the product in a place where static electricity is a problem.

Otherwise failure or malfunction of the system can result.

Do not

Do not cut off the power and compressed air supplied to this product while it is operating.

Otherwise it can cause injury due to dropping of workpieces or damage to the system.

Instruction

If using the product in an interlocking circuit

- Provide a double interlocking system, for example a mechanical system.

- Check the product for proper operation.
Otherwise malfunction can result, causing an accident.

Instruction

The following instructions must be followed during maintenance

- Turn off the power supply

- Stop the air supply, exhaust the residual pressure in piping and verify that the air is
released before performing maintenance work.
It may cause an injury.

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Caution

Do not touch

Do not touch the terminals and connectors while the power is on.

Otherwise electric shock, malfunction or damage to the switch can result.

Instruction

Perform sufficient trial run.

Otherwise, injury or damage to the system can result due to suction failure depending on
the conditions of the suction of the workpiece or the pressure switch settings.

Perform sufficient verification before using this product.

Instruction

After maintenance is complete, perform appropriate functional inspections and leak test.

Stop operation if the equipment does not function properly or there is leakage of fluid.
If there is leakage from parts other than the piping, the product might be broken.
Cut off the power supply and stop the fluid supply.
Do not supply fluid if there is leakage.
Safety cannot be assured in the case of an unexpected malfunction.

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Model Indication and How to Order

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Names of Parts

With valves

Port block

Digital vacuum

pressure switch

Vacuum pressure gauge

Vacuum port

adapter

With port exhaust

With digital vacuum

pressure switch

With Vacuum

pressure gauge

With Vacuum port adapter

Exhaust port

Vacuum pressure
detection port

Supply ( P ) Port

Vacuum ( V ) Port

Suction cover

Silencer case ( Exhaust )

Without valve

Release valve

Supply valve

Vacuum break flow
adjusting needle

Lock nut

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Operating Environment

- Do not use in an environment where corrosive gases, chemicals, sea water, water or steam are
present. These can cause failure or malfunction.

- Do not use the product 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).

- Keep the ambient temperature of the product between 5 and 50°C. In environments such as

inside a panel where heat radiation efficiency is poor, the ambient temperature will rise due to
the heat generation of the coil of the solenoid valve, causing malfunction. At the same time,
avoid rapid temperature changes even within the specified temperature range.

- Do not use this product in places where there are cyclic temperature changes. Heat cycles other
than ordinary changes in temperature can adversely affect the inside of the product.

- Do not use where the product is exposed to direct sunlight. Shade the sunlight in locations
where the product is exposed to direct sunlight. Failure and malfunction can result.

- Do not use in a location where the product is exposed to radiant heat from surrounding heat
sources. This can cause operating failure.

-Do not use the product in an area where surge is generated. When there are machines or
equipment that generate large surge near the pressure switch (magnetic type lifter, high
frequency inductive furnace, motor, etc.), this can result in deterioration and damage of the
internal elements. Take measures against the surge sources, and prevent the lines from coming
into close contact.

- Do not let foreign matter, such as wire debris, get inside the product. In order to avoid failure and
malfunction, do not let foreign matter, such as wire debris, get inside the product.

- The use of resin piping can cause static electricity to be generated, depending on the fluid.
Therefore, when connecting the vacuum pressure switch assembly, take appropriate measures

against static electricity at the customer’s equipment side, and separate the grounding for the

product from the grounding for any equipment which generates a strong electromagnetic noise
or high frequency. Otherwise, static electricity can break the vacuum pressure switch assembly.