| Part Number | Input Voltage | Contacts (5 Amp) |
| ZS11-A | 100-240 VAC | Quantity 3 |
| ZS11-D | 9-36 VDC | Quantity 3 N.O./N.C. |
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The Phares Model ZS11 Zero Speed Switch Module is an interface between simple on/off sensors and control circuitry enabling over speed, under speed and zero speed measurement.
ZS11 Module + Simple On/Off Sensor = Zero Speed Switch
The Phares Model ZS11 Zero Speed Switch Module is particularly useful in applications where more than one sensor is used at a single point of measure to determine varying speeds. The ZS11 Zero Speed Switch Module contains three relay outputs which operate via a single sensor input signal. Each relay output is adjustable, providing three independent speed level settings in one module.
The ZS11 Zero Speed Switch Module is 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 ZS11 Zero Speed Switch Module which is located out of the prohibitive area.
The ZS11 Zero Speed Switch Module can be integrated with existing industrial control systems or used as a stand-alone unit. It is DIN rail mountable for easy installation.
Figure 1. Phares ZS11 Zero Speed Switch Module Indicators and Terminal Block
A ZS11 Zero Speed Switch Module has 5 diagnostic LED’s. These LED’s indicate Power, Pulses from Sensor input signal and Relay status. LED’s are labeled Power, Pulse, Relay 1, Relay 2, and Relay 3. There are 3 trim pots which are used for adjusting the Relay set points.
A ZS11 Zero Speed Switch System consists of the Phares ZS11 Zero Speed Switch Module, Sensor and Magnetic Sensor Target, all sold separately. The Magnetic Sensor Target can be a bolt head, gear tooth, key stock, magnet, reflector, or other target depending upon type of Sensor used.
A Magnetic Sensor Target is installed/located 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 outputs change state. They remain in this state until either under speed or zero speed condition occurs, depending upon the application.
The ZS11 Zero Speed Switch Module supplies 12 VDC to an external Sensor. The Sensor must be 3 wire, sourcing (PNP) or sinking (NPN) signal. Sensor input signal is configured via two position selector switch located at the top right of the terminal strip.
The ZS11 Zero Speed Switch Module uses frequency input from various types of sensors to determine the presence of motion or the lack thereof. Use the ZS11 for over speed, under speed, and zero speed applications.
The following examples of ZS11 Zero Speed Switch Systems consist of:
Figure 2. Phares ZS11 Zero Speed Switch System utilizing an Axial magnetic disk.
Figure 3. Phares ZS11 Zero Speed Switch System utilizing a Radial magnetic disk.
Figure 4. Phares ZS11 Zero Speed Switch System utilizing a Geartooth Wheel already on machine.
The Phares ZS11 Zero Speed Switch System requires a Sensor and Magnetic Sensor Target suitable for measuring speed. Sensor and Magnetic Sensor Targets are sold separately.
Suitable targets are:
• Magnetic Disk
• Split Coupling
• Gear tooth wheel
• Bolt head or key stock with high ferrous (iron) content already on machine.
Phares Electric Digital Output Hall Effect Sensors and Gear Tooth Sensors are simple on/off non-contact switching devices. Digital output signal is clean, fast and switched without bounce. They are magnetically activated switches that detect the presence and motion of the shaft speed monitoring target.
Phares Hall Effect Sensors and Gear Tooth Sensors are produced in a variety of sizes.
The ZS11 Zero Speed Switch Module will also work with many other sensors not produced by Phares Electric. The sensor must be a 3 wire, NPN or PNP, square wave output. The ZS11 Zero Speed Switch will supply the sensor with 12 VDC.
Contact us for technical support and assistance with choosing a sensor and sensor target for your application. Call us at 727-351-2505 today.
Figure 5. Sensor mounted with Terminal Strip Assembly (TSA) Box
The Terminal Strip Assembly (TSA) Box is used to terminate sensor wiring for applications which require long cable runs. It provides quick and convenient mounting for Phares Sensors.
Power Requirements:
Part No. ZS11-A: 100-240 VAC, 116mA, 50/60Hz
Part No. ZS11-D: 9-36 VDC, 116mA
Circuit Protection:
Internal ½ amp fuse (non-replaceable)
Sensor:
Input Signal: 12 VDC, 3 wire, sourcing (PNP) or sinking (NPN)
Dimensions (in inches):
4-5/8″ Wide x 3-1/2″ High* x 3-3/4″ 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