600 Series Proximity Switches IMPROVED - Broader gap distances • Non-contact sensing • Solid-state - no moving parts • Durable corrosion resistant metal housings • High speed repeatability • Short-circuit and reverse polarity protection • Outputs CMOS compatible • Full output signal down to zero Hz • LED operation indicator on all models Product Information Description Electro-Sensors’ Model 600 Series Proximity Switches are active digital sensing devices that generate one pulse per pass of an actuating target within their sensing field. No direct contact with target material is necessary. Each sensor is entirely solid state with no moving parts to wear out. This provides for long life with little or no maintenance. The wide range of supply voltages to the 600 Series permits them to be directly interfaced with low voltage solid state controls, such as programmable controllers and electromechanical relay loads. All sensors are polyurethane or epoxy encapsulated and are provided complete with mounting bracket, jam nuts, and 6 feet of cable. Principle of Operation The Model 600 Series Proximity Switches utilize an oscillator circuit to generate a high frequency field that is radiated from a coil in the tip of the sensor. When a metal object or “target” enters this high frequency field, eddy currents are induced into the target. A detection circuit immediately senses a loss of energy in the oscillator circuit. This low amplitude condition causes the solid state output from the sensor to switch. When the “target” material moves away from the sensing face of the switch, the oscillator regenerates and the switch returns to its normal state. Electro-Sensors’ products bring efficiency and safety to your operations by preventing machine damage, product waste, and costly downtime. Typical Applications 600 Series Proximity Switches can be used in the following applications: • Detect conductive materials • Sequencing automated equipment • Motion detection (keyways, bolt-heads, gears, etc.) • Interlocking machine process control • Parts detection and counting • Drive motor stall detection • Tool detection (broken or damaged) • Input to programmable controllers • Indexing control Sensing Gear Teeth Sensing Boltheads or Screws Sensing Keyslots Sensing Keystock 6111 Blue Circle Drive Minnetonka, MN 55343 Phone: 952-930-0100 Fax: 952-930-0130 ISO 9001:2000 Certified Free Catalog and Application Assistance 1-800-328-6170 Visit us online Superior · Systems · Solutions www.electro-sensors.com

600 Series Proximity Switches Sensor Selection The 600 Series offers two types of Proximity Switch Sensors: shielded and unshielded. For general purpose applications unshielded sensors are usually preferable to shielded because they have greater sensing range capabilities. Shielded sensors, however, have the distinct advantages of being capable of flush mounting directly into a metal surface. This permits minimum spacing between sensors, and conductive materials not directly in line with the sensor's face will not affect The switch should be mounted as close as possible to the target material...