PE606/PE706 Ring Sensors

Gordon Ring SensorsInductive ring sensors for metal parts detection

Our Ring Sensors are designed to detect metals as they pass through the ring, or at an axial distance equivalent to the radius of the ring.

These devices are ideal for many non-contact sensing applications, such as:

  • Die-Ejection Monitoring
  • Automation, Parts Sorting and Counting
  • Process Control
  • Web or Strand Break Detection

Principles of Operation

Our ring sensors are inductive, eddy current type devices. An internal signal generator produces a sensing field around the ring, and any metal which enters the field will have eddy currents produced within it. The energy consumed by these eddy current losses is detected within the sensor, which switches its outputs at a preset level. For this reason, it is essential to install the unit as far away from any metal as possible, and to set the sensitivity after installation.

PE606 sensitivity is adjusted with a 15-turn potentiometer, located beside the LED. Turn the screw clockwise until an alarm occurs. Then, turn the screw counterclockwise until the sensor resets. This is the point of maximum sensitivity. Continue to turn the screw CCW for optimum sensitivity (this should be at least 1/4 turn, to ensure reliable operation).

PE706 is a dynamic sensor which requires any target to be moving at least 1ft./min. to be detected. The unit self-compensates for slowly changing conditions, to allow consistent, high-sensitivity operation. Sensitivity is adjusted with the 15-turn potentiometer, located beside the LED. Fully CW is maximum sensitivity.

Note: With both models, there is less sensitivity in the center of the ring. For maximum sensitivity, parts should be oriented so they occupy the maximum ring area. Then, adjust the unit for consistent detection of the smallest part to be detected.

For information about accessories like our cables and our PR124 Power/Relay Modules, please call our Sales Dept. at 1.800. 315. 9233 or e-mail us, whichever is more convenient.

Mechanical Specifications and Wiring
PE606 Wiring Diagram PE606 Connector
Housing: ABS
Encapsulation: epoxy
Power/Output Cable: M12 x 1 threaded connector cables sold separately, 2 meters (4 wires), straight or right angle
Adjustment: 15-turn potentiometer
Output Indicator: LED, lit when output is conducting
Dimensions
PE606 1″ Dimensions PE606 2″ Dimensions PE606 4″ Dimensions PE606 6″ Dimensions

Electrical Specifications

Input Voltage Supply Ripple Operating Current maximum Leakage Current maximum Output Current maximum
10-30 VDC 10% 12 mA 2 uA 100 mA (NPN) 50 mA (PNP)
Sensitivity Adjustment potentiometer Sensitivity nominal (ferrous metals) Temperature Range Relative Humidity General Environment
15 turns detect a steel ball 15% of ring diameter in size +0o F to +130o F -20o C to +55o C 0 – 100% unaffected by normal factory conditions of dirt, grease and vibration

Installation/Setup Procedures

Mechanical Installation

All models have either #10 or 1/4″ clearance holes, for mounting to bulkheads or brackets. 12A272 Mounting Clamp

12A272 Mounting Clamp

Units should be mounted as far from metal as possible, and adjusted after they are mounted. As a general rule, sensors mounted side-by-side should be spaced a minimum of half the sensor diameter away from each other, and sensors mounted face-to-face should be spaced three times the sensor diameter away from each other.

Electrical Installation

Your sensor’s electrical connections must agree with those shown in the corresponding wiring diagram above.

Setup Procedure

Apply power. With no target present, turn the adjustment potentiometer CW until an alarm condition exists (Normally Open – LED is lit; Normally Closed – LED is off). Then, turn the pot CCW until the alarm just resets. This is the point of maximum possible sensitivity; this is not the recommended operating point, however, as temperature fluctuations may cause false alarms or detection failures. For the optimum setting, continue to turn the pot CCW at least 1/4 turn. Note: Use the parts you intend to monitor and test for reliable detection (at the center of the ring, where sensitivity is the least).
Mechanical Specifications and Wiring
PE706 Wiring Diagram PE706 Connector
Housing: ABS
Encapsulation: epoxy
Power/Output Cable: M12 x 1 threaded connector cables sold separately, 2 meters (4 wires), straight or right angle
Adjustment: 15-turn potentiometer
Output Indicator: LED, lit when unit is alarmed
Dimensions
PE706 1″ Dimensions PE706 2″ Dimensions PE706 4″ Dimensions PE706 6″ Dimensions

Electrical Specifications

Input Voltage Supply Ripple Operating Current maximum Leakage Current maximum Output Current maximum
10-30 VDC 10% 20 mA 2 uA 100 mA
Sensitivity Adjustment potentiometer Sensitivity nominal (ferrous metals) Temperature Range Relative Humidity General Environment
15 turns detect a steel ball 5% of ring diameter in size +0o F to +130o F -20o C to +55o C 0 – 100% unaffected by normal factory conditions of dirt, grease and vibration

Installation/Setup Procedures

Mechanical Installation

All models have either #10 or 1/4″ clearance holes, for mounting to bulkheads or brackets. 12A272 Mounting Clamp

12A272 Mounting Clamp

Units should be mounted as far from metal as possible, and adjusted after they are mounted. As a general rule, sensors mounted side-by-side should be spaced a minimum of half the sensor diameter away from each other, and sensors mounted face-to-face should be spaced three times the sensor diameter away from each other.

Electrical Installation

Your sensor’s electrical connections must agree with those shown in the corresponding wiring diagram above.

Setup Procedure

Apply power. With no target present, turn the adjustment potentiometer fully CW. This is the point of maximum sensitivity. Then, test for detectability. Use actual parts to test detection. Feed your parts through the center of the ring, where sensitivity is the least, to ensure consistency. To reduce sensitivity, turn the potentiometer CCW. Note: PE706 Models are dynamic (AC coupled) devices, which deliver high-sensitivity performance. They do, however, require a 1’/minute (.3 meters/minute) minimum movement of target materials.

Ring Sensor Application: Parts Ejection CountingParts Ejection Counting

Here is an application using a Gordon Engineering PE 606-6 ring sensor. It is detecting parts after an assembly process. The signal is interfacing to a counter keeping track of produced parts. The PE 606 ring sensor is suited to this application because of its immunity to the harsh conditions and only detecting when a metal object enters the sensing field.

All Gordon Engineering Corp. Ring Sensors (i.e., PE606 Ring Sensors and PE706 Ring Sensors) will be repaired or replaced, for the life of your application, if they fail to perform to published specifications.

The product must be used in accordance with the specified manufacturer’s ratings and must not be physically abused.