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The External Vacuum Controller VQP (-S3 spec.) is a precision device designed to optimize the control of large vacuum flows in industrial applications. Its primary function is to maintain consistent pressure levels by monitoring and regulating vacuum conditions, ensuring reliable performance in environments requiring precise flow management.
Constructed with non-metallic materials, the controller features no copper-based metallic components in its flow path. The seal rubber uses low-concentration ozone-resistant HNBR or FKM materials, ensuring durability and chemical resistance in demanding operational conditions. The body is made from PVF (Polyvinyl formal), contributing to corrosion resistance and long-term stability.
The controller offers two valve types—normally closed and normally open—allowing flexibility in system design based on application requirements. It features a dual-screen digital pressure sensor that provides real-time monitoring with clear visual feedback: the main display shows current pressure values in red or green, while the sub-display indicates the preset pressure in orange.
The device operates within an air and non-corrosive, non-flammable gas environment compliant with JIS B 8392-1 Class 1.2.1 to 2.4.3. It functions across a vacuum range of -100 to 0 kPa and an operating pressure range of 0.3 to 0.7 MPa. Operating temperatures are between 5°C and 50°C, with humidity levels from 35% to 85% RH without dew condensation. The rated pressure range is -100 kPa to 100 kPa, and it has a proof pressure of 50 kPa for vacuum circuits.
The VQP (-S3 spec.) is available in two switch output configurations: NPN open collector (VUS-33R-N2) and PNP open collector (VUS-33R-P2), with two outputs (SW1, SW2). The product is designed for use where the negative side of a power supply serves as the common reference potential.
The controller integrates via indirect operation using a pilot valve. It is compatible with both 24 VDC ±10% and 100 VAC ±10% power supplies, offering fast response times: OFF→ON (10 msec [15 msec] for 24 VDC, 10 msec [12 msec] for 100 VAC) and ON→OFF (15 msec [20 msec] for 24 VDC, 21 msec [26 msec] for 100 VAC). Current consumption is up to 40 mA under no-load conditions.
| Specification | Details |
|---|---|
| Fluid medium | Air (JIS B 8392-1: Class 1.2.1 to 2.4.3 compliant), Vacuum | Air, Non-corrosive/Non-flammable gas |
| Operating pressure range | 0.3 to 0.7 MPa |
| Operating vacuum range | -100 to 0 kPa |
| Operating temp. range | 5 to 50 ℃ (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% |
| Operation type | Indirect operation by pilot valve |
| Response time (OFF→ON) (24 VDC) | 10 msec [15 msec] | 10 msec [12 msec] |
| Response time (OFF→ON) (100 VAC) | 10 msec [15 msec] | 10 msec [12 msec] |
| Response time (ON→OFF) (24 VDC) | 15 msec [20 msec] | 10 msec [10 msec] |
| Response time (ON→OFF) (100 VAC) | 21 msec [26 msec] | 16 msec [16 msec] |
| Valve type | Normally closed |
| Element material | PVF (Polyvinyl formal) |
| Rated pressure range | -100 kPa to 100 kPa |
| Proof pressure | 50 kPa |
| Current consumption | 40 mA max. (no-load) |
| Switch output/Output method | NPN open collector output (VUS-33R-N2), PNP open collector output (VUS-33R-P2) |
| Switch output/No. of outputs | 2 outputs (SW1, SW2) |
| Switch output/Max. load current | 125 mA |
| Switch output/Max. supply voltage | 30 VDC (VUS-33R-N2), 24 VDC (VUS-33R-P2) |
| Switch output/Internal voltage drop | 1.5 V max. |
| Response time | Selectable from 50 ms, 250 ms, 500 ms, 1,000 ms, 2,000 ms, 3,000 ms |
| Output short circuit protection | Equipped |
| Ambient temp. range | Operation: 0 to 50 ℃, Storage: -10 to 60 ℃ (No dew condensation or freezing) |
| Ambient humidity range | Operation/Storage: 35 to 85% RH (No dew condensation) |
| Withstand voltage | 1,000 VAC 1 min. (between case and lead wire) |
| Temperature characteristics | ±2% F.S. max. (Reference temperature: 25 ℃, range 0 to +50 ℃) |
| Metric size (mm) | φ10, φ12, φ16 | φ6 |
| Material restriction | No copper-based metallic material is used in flow paths |
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