ZS10 Zero Speed Switch Module
The ZS10 Zero Speed Switch Module is a compact, reliable device for monitoring rotating shafts on automated equipment. It provides a dry contact output when the monitored shaft’s speed drops below a user-adjustable setpoint, preventing damage from over-running or stalled machinery.
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Part Numbers for ZS10
| Part Number | Input Voltage | Contacts (5 Amp) |
| ZS10-A | 120-240 VAC | N.O./N.C. (Form 'C') |
| ZS10-D | 9-36 VDC | N.O./N.C. (Form 'C') |
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Product Overview
The Phares Zero Speed Switch Module Model ZS10 is an interface between simple on/off sensors and control circuitry enabling over speed, under speed, and zero speed measurement.
ZS10 Module + Prox Sensor = Zero Speed Switch
The Phares Zero Speed Switch Module Model ZS10 is particularly useful in applications where environmental conditions, such as high temperature, prohibit the use of certain electronics. In these cases, the sensor is installed in the prohibitive area and wired to the Phares ZS10 Zero Speed Switch Module which is located out of the prohibitive area.
For high temperature sensors, see Phares Digital Output Hall Effect Sensors and Gear Tooth Sensors.
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Product Detail
The Phares Model ZS10 Zero Speed Switch System consists of the Phares ZS10 Zero Speed Switch Module, Sensor and Magnetic Sensor Target, all sold separately.
Install the Magnetic Sensor Target at the point of measure. Motion is detected when the rotating Target triggers the Sensor. When motion is either detected or reaches set point, the relay energizes and the relay output changes state. It remains in this state until either under speed or zero speed condition occurs, depending upon the application.
The Magnetic Sensor Target can be a bolt head, gear tooth, key stock, magnet, reflector, or other target depending upon type of Sensor used. The Phares ZS10 Zero Speed Switch Module supplies 12 VDC to an external Sensor. For added flexibility, the Sensor can be either 2 or 3 wire, sourcing (PNP) or sinking (NPN) signal. Sensor type is detected automatically by the ZS10 Zero Speed Switch.
The Phares ZS10 Zero Speed Switch Module uses frequency input from various types of sensors to determine the presence of motion or the lack thereof. Use the ZS10 for over speed, under speed, and zero speed applications.
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AC version available. See below.
Figure 1. Phares ZS10 Zero Speed Switch Module Indicators and Terminal Block.
The Phares ZS10 Zero Speed Switch Module has 3 diagnostic LED’s. These LED’s indicate Power, Pulses from Sensor input signal and Relay status. LED’s are labeled Power, Pulse, and Relay. A trim pot is used for adjusting the set point.
Features
- Universal input voltage – 100 to 240 VAC or 9 to 36 VDC
- Universal sensor input (NPN or PNP)
- Works with 2 or 3 wire Sensors
- Internal Pull-up Resistor
- Isolated 5 amp relay contacts
- Adjustable relay set point
- Frequency input
- Diagnostic LED’s
- Precision trim pot for accurate relay set point adjustment
- DIN Rail Mount
Benefits
- Zero Speed Switch interface
- Automates your ‘Stop’ circuit
- Faster than pushing Emergency Stop!
- Extend the lifespan of your equipment
- Stop conveyor “domino” effect
- Detect unexpected load increase
- Reduce belt breaks
Specifications
Power Requirements:
Part No. ZS10-A: 100-240VAC, 50/60Hz
Part No. ZS10-D: 9-36VDC
Circuit Protection:
Internal ½ amp fuse (non-replaceable)
Sensor:
12 VDC, 2 or 3 wire, sourcing (PNP) or sinking (NPN)
Dimensions (in inches)
3-1/16″ Wide x 3-1/4″ High* x 2-1/2″ Deep
*including DIN Rail Mount and Terminal Block
Dimensions (in inches):
3-1/16″ Wide x 3-1/4″ High* x 2-1/2″ Deep
*including DIN Rail Mount and Terminal Block
Relay Output:
3 SPDT Form ‘C’ dry relay contacts (N.O/N.C.)
Contact Rating: 5A at 120 VAC; 5A at 30 VDC
Accessories
The following examples of ZS10 Zero Speed Switch Systems consist of:-
- Phares ZS10 Zero Speed Switch Module
- Hall Effect or Gear Tooth Sensor (sold separately)
- Magnetic Disk Sensor Target (sold separately)
- Phares Terminal Strip Assembly (TSA) Box (sold separately).
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Figure 2. Phares ZS10 Zero Speed Switch System utilizing an Axial magnetic disk.
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Figure 3. Phares ZS10 Zero Speed Switch System utilizing a Radial magnetic disk.
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Figure 4. Phares ZS10 Zero Speed Switch System utilizing a Geartooth Wheel already on machine.
Options
- Custom Relay Set-Point Adjustment Range
- Fixed Set-Point
- Relay Latch
Sensor types compatible with the Phares ZS10 Zero Speed Switch Module
- Capacitive
- Encoder
- Gear Tooth
- Hall Effect
- Inductive
- Laser
- Photoeye
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Wiring & Installation
- Mount the sensor and aim at a rotating target such as a bolt head, key stock, flat washer, magnet, or a Phares Sensors & Automation Magnetic Disk.Â
- Connect relay contacts (N.O. or N.C.) to your control circuit.
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Adjust the relay set-point to match your application requirements using the trim pot on the ZS10 Zero Speed Switch.
LED indicators show power, sensor and relay status at a glance.
Frequently Asked Questions
- Do I need a separate sensor?
- Yes. The ZS10 Zero Speed Switch is designed for use with an external sensor. It can be 2 or 3 wire, PNP or NPN. All Phares Sensors & Automation Hall Effect Sensors and Gear Tooth Sensors are compatible.
- What happens if the shaft stops?
- When a stop or under speed condition is detected, the relay LED turns off and the relay disengages, returning to its default (normal) state.
- How close should the sensor be to the target?
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For ferrous targets, a minimum of 1/16″ (6 mm) to approximately 5/16″ (7.94 mm).
When using a Phares Sensors & Automation magnet or magnetic disk, the recommended sensing distance ranges from approximately 1/4 inch (6.35 mm) to 1 inch (25.4 mm), depending on the specific magnetic target selected.
Related Products
- Activates via magnetic north or south pole
- Available for high temperature environments
Recommended for slow applications.
Sensor and relay combined in a single unit. Switches 5 Amps.