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The Multi-function Vacuum Generator Module VJ (-S3 spec.) is a compact, integrated vacuum and blow-off control unit designed to manage both vacuum suction and air blow-off functions in industrial automation systems. It combines conventional flow control with an added pressure adjustment feature, enabling precise control over workpiece positioning and preventing unintended displacement during operation. This dual functionality ensures stable handling of components by allowing controlled release of blow-off air while maintaining consistent vacuum conditions.
The module is constructed using non-copper metallic materials throughout its internal flow paths to avoid potential contamination or corrosion in sensitive environments. The seal rubber components utilize low-concentration ozone-resistant HNBR or FKM elastomers, ensuring durability and performance under varying operational conditions. All internal elements are made from PVFM (polyvinyl formal), a material selected for its chemical resistance and long-term reliability in air-based systems.
The module features three different supply valve types to accommodate various system configurations—normally closed, normally open, or double-piloted—allowing flexibility during integration into existing pneumatic or vacuum control circuits. It is designed with an indirect operation mechanism via a pilot valve, enabling reliable and responsive switching without direct actuation of the main valve element.
The VJ (-S3) operates within a pressure range of 0.3 to 0.7 MPa for air supply and delivers vacuum levels from -100 to 0 kPa. It is rated for operating temperatures between 5°C and 50°C, with no freezing risk, and humidity conditions from 35% to 85% RH without dew condensation. The module supports a maximum supply pressure of 1.05 MPa in the air circuit and 0.2 MPa in the vacuum circuit for proof testing. Blow-off air flow rates range from 0 to 50 L/min at a supply pressure of 0.5 MPa, with blow-off pressure settings adjustable between -25 and +25 kPa.
The module is available in standard configurations with no color variants or size options specified. It offers two distinct pressure setting modes—two settings or one setting—with the ability to set pressures from -99 to 0 kPa using a diffused semiconductor pressure switch. All units are designed for use with air as the fluid medium, conforming to JIS B 8392-1 (Class 1.2.1 to 2.4.3) standards.
The module integrates directly into pneumatic systems through standard connection points for both air supply and vacuum circuits. It includes a built-in relief function in the blow-off circuit to safely release excess pressure, preventing over-pressurization. The unit operates on either 12 to 24 VDC ±10% or 100 VAC ±10%, with ripple (P-P) limited to 10% max, and consumes a maximum current of 40 mA. Response times are optimized for fast switching: ON/OFF transition times range from 8 to 30 milliseconds depending on supply voltage, enabling precise control in dynamic industrial processes.
| Specification | Details |
|---|---|
| Fluid medium | Air [JIS B 8392-1: (Class 1.2.1 to 2.4.3)] |
| Operating pressure range | 0.3 to 0.7 MPa | -100 to 0 kPa |
| Operating temperature range | 5 to 50°C (No freezing) |
| Operating humidity range | 35 to 85% RH (No dew condensation) |
| Proof pressure (air supply circuit) | 1.05 MPa |
| Proof pressure (vacuum circuit) | 0.2 MPa |
| Rated voltage | 24 VDC ±10% | 100 VAC ±10% | 12 to 24 VDC ±10%, ripple (P-P): 10% max. |
| Operating type | Indirect operation by pilot valve |
| Valve type | Normally closed | Normally open | Double-piloted *1 |
| Response time (OFF→ON) | 10 msec [15 msec] (24 VDC) / 13 msec [18 msec] (100 VAC) | 15 msec [20 msec] (24 VDC) / 18 msec [23 msec] (100 VAC) | 8 msec [13 msec] (24 VDC) / 11 msec [16 msec] (100 VAC) |
| Response time (ON→OFF) | 30 msec [35 msec] (24 VDC) / 33 msec [38 msec] (100 VAC) | 20 msec [25 msec] (24 VDC) / 23 msec [28 msec] (100 VAC) | 15 msec [20 msec] (24 VDC) / 18 msec [23 msec] (100 VAC) | 18 msec [23 msec] (24 VDC) / 21 msec [26 msec] (100 VAC) |
| Element material | PVFM (polyvinyl formal) |
| Blow-off air flow rate | 0 to 50 L/min [ANR] (Supply pressure: 0.5 MPa) |
| Blow-off pressure setting range | -25 to 25 kPa |
| Current consumption | 40 mA max. |
| Pressure detection | Diffused semiconductor pressure switch |
| Pressure setting range | -99 to 0 kPa |
| Proof pressure | 0.2 MPa |
| Power supply voltage | 12 to 24 VDC ±10%, Ripple (P-P): 10% max. |
| No. of pressure settings | 2 | 1 |
| Switch output | NPN open collector (30 V, 80 mA max., Residual voltage: 0.8 V max.) | NPN open collector (30 V 80 mA max., residual voltage: 0.8 V max.) |
| Response time | Approx. 2 msec |
| Analog output: Output voltage | 1 to 5 V |
| Analog output: Zero-point voltage | 1 ±0.1 V |
| Analog output: Span voltage | 4 ±0.1 V |
| Analog output: Output current | 1 mA max. (Load resistance: 5 kΩ min.) |
| Analog output: Linearity/Hysteresis | ±0.5% F.S. max. (Standard temp.: 25°C) |
| Metric size (mm) | φ4, φ6, φ8 | φ4, φ6 | φ6, φ8, φ10 | φ8 | φ8, φ10 |
| Material restriction | No copper-based metallic material is used in flow paths |
| Pressure sensor configuration | Two types of pressure sensor are available, two switch outputs, or 1 switch output + 1 analog output, to be selected depending on the desired application. For wiring, a connector wire is adopted to enhance the ease of designing the wiring layout |
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