Need reliable equipment monitoring? The Phares Model ZS09P Zero Speed Switch Sensor ensures precision and productivity in your operations. This innovative all-in-one shaft speed monitoring device combines both sensor and relay functionality, no separate control box required. Capable of switching up to 5 amps. Act now! Equip your system with the ZS09P Zero Speed Switch Sensor for reliability and peace of mind.
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| Part Number | Input Voltage | Contacts (5 Amp) | Target |
| ZS09P1-120F | 120 VAC | N.O./N.C. | Ferrous |
| ZS09P2-120F | 120 VAC | N.O. | Ferrous |
| ZS09P3-120F | 120 VAC | N.C. | Ferrous |
| ZS09P1-120M | 120 VAC | N.O./N.C. | Magnetic |
| ZS09P2-120M | 120 VAC | N.O. | Magnetic |
| ZS09P3-120M | 120 VAC | N.C. | Magnetic |
| Part Number | Input Voltage | Contacts (5 Amp) | Target |
| ZS09P1-DF | 5-24 VDC | N.O./N.C. | Ferrous |
| ZS09P2-DF | 5-24 VDC | N.O. | Ferrous |
| ZS09P3-DF | 5-24 VDC | N.C. | Ferrous |
| ZS09P1-DM | 5-24 VDC | N.O./N.C. | Magnetic |
| ZS09P2-DM | 5-24 VDC | N.O. | Magnetic |
| ZS09P3-DM | 5-24 VDC | N.C. | Magnetic |
The ZS09P Zero Speed Switch Sensor is a rugged, all-in-one motion detection system. It combines sensor and relay into one compact unit — no external control box is needed. Just aim the sensor at a rotating target (bolt head, key stock, flat washer, magnet, etc.) and wire it into your control circuit.
Designed for industrial environments, the ZS09P protects your equipment by detecting stopped or slowed shafts, belts, and other rotating parts. It’s commonly used on conveyors, elevators, augers, crushers, and mixers.
The ZS09P Zero Speed Switch Sensor is designed for over speed, under speed, and zero speed monitoring in industrial equipment. It features an adjustable set point for precise and accurate shaft speed detection. This smart sensor protects conveyors, augers, bucket elevators, and other machinery by detecting when equipment slows down or stops unexpectedly — faster than pushing Emergency Stop!
The ZS09P Zero Speed Switch Sensor may resemble a standard proximity switch, but it features advanced speed sensing circuitry that goes beyond simple on/off detection. When the machine shaft speed reaches the adjustable set point, the ZS09P’s relay output changes state. It stays in this state until an under speed or zero speed condition is detected.
Phares Zero Speed Switch Sensors feature isolated relay contacts, making them easy to integrate into new installations, retrofit projects, or as direct replacements for obsolete zero speed switches in industrial control systems.
| Operating Voltages | 5-24 VDC or 120 VAC |
|---|---|
| Current Draw | 50 mA |
| Speed Detection Range | 0.03 to 25,000 RPM |
| Operating Temperature | -40°F to 140°F |
| Operating Frequency | Hall Effect and Inductive (Gear Tooth): 0.02Hz-10kHz Hall Effect Only: 0.02Hz – 25kHz |
| Relay Contact Ratings | 5A, 240VAC 5A, 30VDC Vibration resistance (function) NO/NC contact >15/5g Shock resistance (destruction) >100g |
| Relay Set-Point Adjustment Range | Standard: 1-100 RPM, 1 Pulse Per Revolution Custom parameters are available. |
| Housing Material | Aluminum |
| Fuse | Internal 1/2 Amp non-replaceable fuse |
| Cable | 4 ft., 6 Conductor, 22 AWG, Unshielded |
| Sensing Distance to Target (Gap) | 1/16″ to 5/16″ using Ferrous Target (Gear Tooth Wheel, Bolt Head, Key Stock, etc.) Sold separately: |
| Minimum Gear Tooth Target Sizes | 1/8″ gear tooth length, width, depth and gap. |
| Gear Tooth Target Material | High ferrous (iron) content. |
Installation is simple:
LED indicators show sensor and relay status at a glance.
1/16″ to 5/16″ using Ferrous Target (Gear Tooth Wheel, Bolt Head, Key Stock, etc.)
Sold separately:
1/16″ to 3/8″ using Phares High Density Magnetic Disk
1″ maximum using Phares Standard Magnetic Disk
1″ maximum using Phares Magnet, Part No. SM-100
2″ maximum using Phares Magnet, Part No. RM-100
aiming the sensor at a rotating target such as a bolt head, key stock, flat washer, or magnet. Ferrous targets must have high iron content. Stainless steel and other low-ferrous materials may not be detected reliably.
Rugged cast aluminum enclosure with gasketed cover for harsh outdoor enviroments
Process tachometer with programmable relays, LED display, and analog output signals