SMC ITVH2020 Series High Pressure Electro-Pneumatic Regulator

Intended Use

The electro-pneumatic regulator is designed to control the flow and pressure of fluid in response to an electrical input signal.

1 Safety Instructions

These instructions are intended to prevent hazardous situations and equipment damage. Hazards are indicated by "Caution," "Warning," or "Danger." Follow these and applicable International Standards (ISO/IEC) and safety regulations.

• 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 10218-1: Robots and robotic devices - Safety requirements for industrial robots - Part 1: Robots.

Refer to the product catalogue, Operation Manual, and Handling Precautions for SMC Products for additional information. Keep this manual in a safe place for future reference.

Hazard Levels:

• Caution: Indicates a low-level risk that could result in minor or moderate injury if not avoided.
• Warning: Indicates a medium-level risk that could result in death or serious injury if not avoided.
• Danger: Indicates a high-level risk that will result in death or serious injury if not avoided.

General Safety Warnings:

• Always ensure compliance with relevant safety laws and standards.
• All work must be performed safely by qualified personnel in compliance with applicable national regulations.
• This product is Class A equipment for industrial environments. Electromagnetic compatibility may be challenging in other environments due to conducted or radiated disturbances.

General Safety Cautions:

• Ensure the air supply system is filtered to 5 microns.
• Refer to the SMC website (https://www.smcworld.com) for more information on Safety Instructions.

2 Specifications

2.1 General Specifications

¹ Pressures of 0.2 MPa or less cannot be controlled.

² 2-wire type 4 to 20 mA is not available. A power supply voltage (24 VDC) is required.

³ Select either analogue output or switch output. If switch output is used, select either NPN or PNP output. When measuring analogue output of 1 to 5 VDC with a load impedance less than 100 kΩ, the analogue output may not achieve the output accuracy of ±6% F.S. or less.

⁴ The setting (Zero/Span, Preset input, Switch output) can be adjusted by each minimum display unit. The unit cannot be changed.

⁵ The above characteristics are confined to the static state. When air is consumed on the output side, the pressure may fluctuate.

⁶ This product is not certified by Japan's High Pressure Gas Safety Act.

Special Product Warning

Special products (-X) may have specifications different from those shown. Contact SMC for specific drawings.

3 Installation

3.1 Installation

Warning

• Do not install the product unless the safety instructions have been read and understood.
• This product is pre-set at the factory and must not be dismantled by the user. Contact your local SMC office for advice.
• Ensure the product is kept clear of power lines to avoid noise interference.
• Ensure load surge protection is fitted when inductive loads are present (e.g., solenoid, relay).
• Take precautions if the product is used in a 'free flow output' condition, as air will continue to flow continuously.
• Ensure all air is exhausted from the product before maintenance.
• The connector cable length should be a maximum of 10 m.

3.2 Environment

Warning

• Do not use in environments with corrosive gases, chemicals, saltwater, or steam.
• Do not use in an explosive atmosphere.
• Do not expose to direct sunlight. Use a suitable protective cover.
• Do not install in a location subject to vibration or impact. Check product specifications.
• Do not mount in a location exposed to radiant heat.

3.3 Piping

Caution

• Before piping, clean up chips, cutting oil, dust, etc.
• When installing piping or fittings, ensure sealant material does not enter the port. When using seal tape, leave 1.5 to 2 threads exposed on the end of the pipe/fitting.
• Tighten fittings to the specified torque.

When connecting piping, refer to the product's instruction manual for correct port identification (Port 1: Supply port, Port 2: Output port, Port 3: Exhaust port).

3.4 Lubrication

Caution

• SMC products are lubricated for life and do not require service lubrication.
• If system lubrication is required, refer to the catalogue.
• Do not use a lubricator on the supply side of this product, as it can cause malfunction. If lubrication is necessary, connect a lubricator on the output side.

4 Wiring

Caution

• Incorrect wiring can cause damage. Proceed with care.
• Use a DC power supply with sufficient capacity and low ripple.
• Turn off the power supply before removing or inserting connectors.
• Never rotate the right-angle connector as it is not designed for rotation.
• Connect the F.G. terminal at the front of the product to Ground.

4.1 Ground Connection

Connect the F.G. terminal at the front of the main body to Ground. Fluctuations in field ground due to noise may affect product operation.

Wiring Details (Optional Cable Used):

4.2 Wiring Diagrams

Current / Voltage Type

Wiring:

• Brown: Power supply (+)
• White: Input Signal
• Blue: GND (Common)
• Black: Monitor output

Input Signal Specifications:

• 4 to 20 mADC
• 0 to 20 mADC
• 0 to 5 VDC
• 0 to 10 VDC

Preset Input Type

Wiring:

• Brown: Power supply (+)
• White: S1
• Blue: GND (Common)
• Black: S2

Preset Pressure Selection:

For safety, it is recommended that one of the preset pressures be set to 0 MPa.

Analogue Output - Voltage Type (ITVH2020-*1)

Wiring:

• Brown: Power supply (+)
• White: Monitor output voltage (+)
• Blue: GND (Common)
• Black: Monitor output voltage (-)

Use equipment with a minimum load impedance of 100 kΩ.

Analogue Output - Current (Sink) Type (ITVH2020-*4)

Wiring:

• Brown: Power supply (+)
• White: Monitor output current (+)
• Blue: GND (Common)
• Black: Monitor output current (-)

Use equipment with a maximum load impedance of 250 Ω.

Switch Output - NPN Type (ITVH2020-*2)

Wiring:

• Brown: Power supply (+)
• White: Load Output
• Blue: GND (Common)
• Black: (Not specified, likely unused or for PNP)

If a current of approximately 150 mA or more is applied, the over-current circuit will operate, "Er.5" will be displayed, and the operation will stop. Install a load to ensure an output current of 80 mA or less.

Switch Output - PNP Type (ITVH2020-*3)

Wiring:

• Brown: Power supply (+)
• White: Load Output
• Blue: GND (Common)
• Black: (Not specified, likely unused or for NPN)

If a current of approximately 150 mA or more is applied, the over-current circuit will operate, "Er.5" will be displayed, and the operation will stop. Install a load to ensure an output current of 80 mA or less.

5 Settings

5.1 Setting Method

Caution

• If an incorrect key is pressed or incorrect information is displayed during setting, turn off the power and restart the procedure.
• It is recommended to change settings without supply pressure. The product operates immediately when maximum and minimum pressures are set and the S-key is pressed.
• It is recommended that the minimum pressure is output when air is supplied to the inlet, even if no input signal is entered.
• Output pressure and operating state are changed by modifying settings and functions.

5.2 Key Locking Function

Caution

The keys are locked when power is turned ON and cannot be operated.

Unlocking the Keys:

Note: Step 4, press SET key to cancel.

Locking the Keys:

Note: Step 4, press SET key to cancel.

5.3 Setting of Minimum / Maximum Pressure and Switch Output

Notes on Settings:

• 1) F_1 is adjustable from 0 to 90% of the rated value (default: 0% - 0.00 MPa).
• 2) F_2 is adjustable from 10 to 120% of the rated value (default: 100% - 2.00 MPa).
• 3) Do not input a signal to output pressure exceeding 100%.
• 4) The difference between F_1 and F_2 is adjustable from 10% of the rated value.
• 5) F_1 cannot be greater than F_2.
• 6) The numbers (e.g., 2.00) on the LED display indicate the secondary pressure.

5.4 Reset Function

Reset Method:

Default Reset Values:

• F_1: 0% F.S.
• F_2: 100% F.S.
• P_1, P_2: 100% F.S.
• P_1 ~ P_4: 0% F.S.

5.5 Error Display

If an abnormality is detected, the ITVH will display "Er" followed by a code number. Isolate the power supply, ascertain the problem, and resolve it. Re-apply power after correcting the fault.

5.6 Zero-Clear Function

• Press the SET keys together for 2 seconds or more.
• Press the △ and ▽ keys. Display shows 'F03'.
• Press the SET keys. Display shows 'OcL' (flashing).
• Press the △ and ▽ keys simultaneously. Display shows 'Ocl'.
• Press the △ and ▽ keys simultaneously for 3 seconds or more. Display shows 'clr' (1 second).
• Zero-clear is complete.

5.7 Initialization

• Press the SET key simultaneously for 2 seconds or more.
• Press the △ and ▽ keys. Display shows 'F99'.
• Press the SET keys. Display shows 'ini' (Flashing).
• Press the △ and ▽ keys simultaneously. Display shows 'ini'.
• Press the △ and ▽ keys simultaneously for 5 seconds or more. Display turns OFF (1 second).
• Initialization is complete.

6 How to Order

Refer to the operation manual or catalogue on the SMC website (https://www.smcworld.com) for ordering information.

7 Outline Dimensions

Refer to the operation manual or catalogue on the SMC website (https://www.smcworld.com) for outline dimensions.

8 Maintenance

8.1 General Maintenance

Caution

• Failure to follow proper maintenance procedures may cause product malfunction and equipment damage.
• Compressed air can be dangerous if handled improperly.
• Maintenance of pneumatic systems should only be performed by qualified personnel.
• Before performing maintenance, turn off the power supply and cut off the supply pressure. Confirm that all air is released to the atmosphere.
• After installation and maintenance, apply operating pressure and power, and perform functional and leakage tests to ensure correct installation.
• If electrical connections are disturbed during maintenance, ensure they are reconnected correctly and perform safety checks to maintain compliance with applicable national regulations.
• Do not modify the product.
• Do not disassemble the product unless required by installation or maintenance instructions.
• Ensure all air is exhausted from the product before maintenance.

9 Limitations of Use

9.1 Limited Warranty and Disclaimer/Compliance Requirements

Refer to Handling Precautions for SMC Products.

9.2 Product Disposal

This product should not be disposed of as municipal waste. Check local regulations and guidelines for correct disposal to minimize impact on human health and the environment.

11 Contacts

Refer to www.smcworld.com or www.smc.eu for your local distributor/importer.

SMC Corporation
4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021, Japan

Specifications are subject to change without prior notice from the manufacturer. © 2021 SMC Corporation. All Rights Reserved.