P51894 Rev 03 Installation Instructions E56 Pancake Style Inductive Proximity Sensor WARNING IN ORDER TO AVOID ELECTRIC SHOCK OR OTHER POSSIBLE INJURY: DO NOT USE THIS PRODUCT FOR HUMAN SAFETY APPLICATIONS. IT WAS NOT DESIGNED, TESTED OR RECOMMENDED FOR THIS USE. DO NOT USE THIS PRODUCT IN HAZARDOUS LOCATIONS (E.G. EXPLOSIVE ATMOSPHERES). IT WAS NOT DESIGNED, TESTED OR RECOMMENDED FOR THIS USE. Note: This installation manual only covers small-diameter ENSURE THE PRODUCT IS PROPERLY WIRED TO THE CORRECT pancake models (with model numbers beginning with POWER SUPLLY FOR THE APPLICATION. REFER TO THE E56A). For the installation manual covering medium- and SPECIFICATIONS AND WIRING DIAGRAMS IN THIS MANUAL. large-diameter models, use P51895. MODELS COVERED IN THIS MANUAL INTRODUCTION The Cutler-Hammer E56 Pancake Style Inductive Sensor from Eaton is a top-sensing, solid-state device used to detect metal E56BAL70UAA01 targets at range. The E56 Series is available in three different sizes: small ( 74 mm), medium ( 96 mm), and large ( 152 mm). Connectivity options include a factory-installed Mini Connector, Micro Connection Connector or Screw Terminals. The E56 Series meets the A01 AC Micro, 3-Pin requirements of NEMA Type 4, 4X, 6, 6P, 12 and 13 enclosures. B01 AC Mini, 3-Pin Each package style is available in either 4-wire DC or 2-wire Output Type C02 Cable, 2 m AC/DC versions. Additional key features include complementary L1 N.O. / 1 N.C. D01 DC Micro, 4-Pin outputs (1NO / 1NC) for DC models and two output status LEDs. The 4-wire DC models also feature Auto-Con g Outputs, which M1 N.O. E01 DC Mini, 4-Pin automatically set the sensor to the correct output mode (NPN/ N1 N.C. Screw Terminals sinking or PNP/sourcing) without user intervention. Output Mode Voltage Type BASIC OPERATION A Auto-Con g (NPN/PNP) A AC/DC 2-wire Inductive proximity sensors generate a high frequency N NPN D DC 4-wire oscillating magnetic eld in the vicinity of the sensing head. P PNP When a metal object enters this eld, it changes the eld Size loading of the oscillator coil. This change is recognized by a Shielding detector circuit, which then energizes the output. A Baseplate: 80 mm Sensing Head: 74 mm U Unshielded E56 Series sensors will detect all metals, but primarily steel. The B Baseplate: 110 mm exact distance at which a target is detected is determined by its S Shielded Sensing Head: 96 mm size, thickness and type of metal. C Baseplate: 170 mm Sensing Range To determine sensing distance with your target, see the Sensing Sensing Head: 152 mm Field Diagrams on Page 2. These diagrams serve as a reference 40 40 mm point and show where the target will be detected for lateral 50 50 mm Product Family (side or slide-by) and axial (head-on) approaches. These curves 60 60 mm must be corrected for smaller-than-standard targets and other E56 E56 Series metals. (Standard target sizes are listed Page 2.) 70 70 mm Note: Not all possible combinations 100 100 mm shown in table are offered as standard. Effective: 18 June 2009 Questions Call our Sensor Application Engineers at (800) 426-9184. Page 1P51894 Rev 03 Detection for laterally approaching targets occurs at the point MOUNTING CONSIDERATIONS where the target rst touches the envelope of the sensing curve The sensor should be mounted using four 0.25-inch bolts depicted below. The curves must be corrected for smaller through the mounting holes provided. Do not support the targets and other metals. The general correction factors for sensor by conduit alone. The sensor can be mounted to metals other than steel are shown below. any surface without affecting sensor performance, but it is Maximum sensing distances are shown in the below diagrams, recommended to use a solid base to ensure reliable operation. but for most reliable lateral operation, keep the sensor-to- For all unshielded inductive sensors, ensure there is adaquate target distance as short as possible. It is recommended that a distance between the sensor face any adjacent metals. See the lateral traveling target pass at no more than 75 percent of the below diagram for isolation distances. maximum sensing distance. When E56 Series sensors are mounted side-by-side, there is the possibility of interaction between the magnetic elds CORRECTION FACTORS FOR METALS of the sensors. This could cause unreliable operation. Follow Sensing range is determined by target size, thickness and metal the limitations noted in the below illustration when mounting type. See the below table for correction factors based upon sensors in the same location. standard target sizes. Sensor Isolation Minimum Distances to Adjacent Metals Target Material Corrective Factor Steel 1020 1.00 Stainless Steel 400 0.90 Stainless Steel 300 0.70 Brass 0.54 Aluminum 0.50 3 x Sensing Distance 3 x Sensing Distance Copper 0.46 Sensor-to-Sensor Isolation Minimum Distances SENSING FIELD DIAGRAM Small Diameter Pancake Axial 50 (1.97) 40 (1.57) Lateral 75% Operate 9 x Sensing Distance 12 x Sensing Distance Point 20 (0.79) 40 20 20 40 (1.57) (0.79) (0.79) (1.57) SENSING The sensing eld for the E56 Series sensor is shown to the right. In addition to maximum sensing distance, this diagram also illustrates the performance of the sensor as the target approaches the sensing face in an axial (head-on) or lateral (side or side-by-side) manner. In this diagrams, the sensing distances shown are base rated on standard target sizes. Sensing range will decrease if a target is used that is smaller than the standard target size. See the below table for standard target sizes for each style sensor. Sensor Model Standard Target Size Small Diameter 3 x Sensing Range (Both Shielded and Unshielded) Page 2 Questions Call our Sensor Application Engineers at (800) 426-9184. Effective: 18 June 2009