Long-distance Separate-amplifier ES Series Features Detecting distance twice that of conventional sensors Detecting distance easily adjustable Wide range of sensor head types available Built-in alarm output Detecting Distance Shielded Up to Non-shielded Up to Description Long detecting distance A separate amplifier gives the ES Series twice the detecting distance of self-contained proximity sensors. Detecting distance can be easily adjusted The ES Series doesn t need precise adjustments to sensor position during setup. You can adjust the detecting distance using the adjustment trier after the sensor head is installed or during operation, when necessary. Because of its small hysteresis, the ES Series can detect minute height differences of continuously moving objects. Dust cover (ES-X) The ES-X is equipped with a dust cover to protect the amplifier. The hinged cover remains on the amplifier when opened or closed. ON Small difference models of sensor heads available s are available in sizes ranging from. to. in diameter. Protected cable (EH-S/S/S) The sensor cable is encased in a stainless steel spiral tube to prevent breakage. Compact size (EH-) The smallest ES Series proximity sensor, with a sensor head. in diameter, offers the maximum detecting distance of. Space-saving (EH-A) The ES Series thin-type sensor is only. thick, enabling it to be installed in areas of limited space. Resistant to welding spatter (optional) The Teflon cap protects the sensor head (EH-//) from welding spatters. Oil-resistant (EH-) Precision-machined stainless steel and a special sealing mechanism makes the EH- highly resistant to oil.
Long-distance Separate-amplifier ES Applications Photoelectric Detection of E-ring insertion Checking of part ID affixed to pallet Determination of transistor placement Confirmation of seating of piston to be drilled Safety Light Curtains Selection Chart Shielded, with spiral tube, with spiral tube Threaded, oil-resistant Threaded. dia.. dia.. dia.. dia. dia. dia. M M Size Shape Detecting distance. (. ) (. ) ( ) ( ) ( ) ( ). (. ) ( ) EH- EH-A EH- EH-S EH- EH-S EH- EH- Pressure Prograable Logic Controllers Counters, Control Units High Precision Vision Systems Threaded, with spiral tube Threaded M M ( ) ( ) EH-S EH- Bar Code Readers Non-shielded Thin, threaded Stable detecting distance t=.. dia.. dia. dia. dia. dia. dia. Maximum detecting distance ( ) ( ) ( ) ( ) ( ) ( ) ( ) EH-A EH- EH- EH- EH- EH- EH- Displacement Thrubeam Measuring Instruments Analog Sensor Controllers Video Microscope Technical Guide
ES Long-distance Separate-amplifier Amplifier Shape Power supply Output Output mode to VDC NPN ma ( V) max. N.O./ N.C. selectable ES-DC to VDC NPN ma ( V) max. N.O./ N.C. selectable ES-X Specifications EH- Stable detecting range Maximum detecting distance Detectable object Standard target (iron, t= ) Repeatability Hysteresis Shielded Threaded EH-A EH- EH- EH- to. to. to to to. Ferrous metals (see Characteristics for nonferrous metals) x x x x x.......... Temperature fluctuation ± % max. (EH-: - to +%) of detecting distance at + C (- to + C) Enclosure rating Ambient temperature - to + C - to + C - to + C - to + C - to + C Weight (including nuts and -m cable) g g g g g. Not designed for iersed use. Threaded EH- Stable detecting range Maximum detecting distance Detectable object Standard target (iron, t= ) Repeatability Hysteresis Shielded Thin Oil-resistant EH-A H-. E to to to.. Ferrous metals (see Characteristics for nonferrous metals) x x x...... Temperature fluctuation ± % max. of detecting distance at + C (- to + C) Enclosure rating Ambient temperature - to + C - to + C - to + C Weight (including nuts and -m cable) g g g
Long-distance Separate-amplifier ES Stable detecting range Maximum detecting distance Detectable object Standard target (iron, t= ) Repeatability Hysteresis Amplifier EH-S Shielded; Spiral tube EH-S Threaded Non-shielded and threaded EH-S EH- EH- to to to to to Ferrous metals (see Characteristics for nonferrous metals) x x x x x.......... Temperature fluctuation ± % max. (EH-: +%, -% max.) of detecting distance at + C (- to + C) Enclosure rating Operation temperature - to + C - to + C - to + C - to + C - to + C Weight (including nuts and -m cable) g g Non-shielded and threaded g g EH- EH- EH- EH- Stable detecting range Maximum detecting distance Detectable object Standard target (iron, t= ) Repeatability Hysteresis Temperature fluctuation to to to to Ferrous metals (see Characteristics for nonferrous metals) x x x x........ ±% max. (EH-: +%, -% max.) of detecting distance a t + C (- to + C) Enclosure rating Operation temperature - to + C - to + C - to + C - to + C Weight (including nuts and -m cable) Power supply NPN g DC g ES-DC ES-X to VDC to VDC C urrent/power consumption ma max. ma max. R esponse time ms max. ms max. Temperature fluctuation Sensitivity adjustment ± % of detecting distance at + C ( to + C) -turn trier O peration mode N.C./N.O. (switch selectable) I ndicator Output: Red LED. Control output Disconnection alarm out put NPN: ma ( V) max., Residual voltage: V max. NPN: ma ( V) max., Residual voltage: V max. NPN: ma ( V) max. Residual voltage: V max. L eakage current (OFF time) Ambient temperature to + C to + C Weight g g (including -m cable) g g g Photoelectric Safety Light Curtains Pressure Prograable Logic Controllers Counters, Control Units High Precision Vision Systems Bar Code Readers Displacement Thrubeam Measuring Instruments Analog Sensor Controllers Video Microscope Technical Guide
ES Long-distance Separate-amplifier Connections ES-DC ES-X Brown Shield (Alarm output) (Control output) Load Load to VDC Shield Black Load Orange Load Blue to VDC Input/Output Circuits ES-DC NPN ES-X NPN Brown Main circuit Load Load (Alarm output) (Control output) to VDC Main circuit Load Black Load (Control output) Orange (Alarm output) Blue to VDC Adjustment Both NEAR-ON and NEAR-OFF modes are available NEAR-ON mode uses a normally open relay that closes when the target is detected. NEAR-OFF mode uses a normally closed relay that opens when the target is detected. NEAR-ON operation Lights when target is in place A Indicator turns off Trier Optimal position Detecting range B Lights when there is no target. With the target in place, turn the trier clockwise and find point A at which the output indicator lights. (If the output indicator is already lit, turn the trier counterclockwise.). With the target removed, again turn the trier clockwise and find point B at which the output indicator lights. NEAR-OFF operation Turns off when target is in place Indicator lights A Trier Optimal position Detecting range B Turns off when there is no target. With the target in place, turn the trier clockwise and find point A at which the output indicator turns off. (If the output indicator is already off, turn the trier counterclockwise.). With the target removed, again turn the trier clockwise and find point B at which the output indicator turns off.. Set the trier midway between points A and B. The output circuit will now actuate when the output indicator lights.. Set the trier midway between points A and B. The output circuit will now actuate when the output indicator lights.
Long-distance Separate-amplifier ES Operation mode selector switch ES-DC: Use a screwdriver to set the position of the operation mode selector switch, located in the lower part of the controller. A: NEAR-ON Operation mode (N.O.) A Characteristics Detecting range (Typical) Detecting distance Y () Detecting distance Y () % of rated detecting distance % of rated detecting distance EH-/S.... Detecting distance Y X Distance X Standard Target Y Sensor These graphs show variations in detecting distance measured by moving the target parallel to the sensor head for a distance % and % of the stable detecting distance. EH- % % - - X () % B B: NEAR-OFF Operation mode (N.C.) Detecting distance Y () Detecting distance Y () Detecting distance Y () EH-..... -. - -... EH-/S... ES-X: Set the operation mode selector switch provided on the panel. % Output indicator NEAR-ON (N.O.) Sensitivity adjustment NEAR-OFF (N.C.) trier OUT SENS MODE ES-X X () - - - - X () EH-A - - - - X () - - - - X () Detecting distance Y () EH-A.. N.O N.C Operation mode selector switch % %.. % - - EH-/S. % % % % % % Detecting distance Y () Detecting distance Y ().. EH-.... - - - - % % % X () X () X () Photoelectric Safety Light Curtains Pressure Prograable Logic Controllers Counters, Control Units High Precision Vision Systems Bar Code Readers Displacement Thrubeam Measuring Instruments Analog Sensor Controllers Video Microscope Technical Guide
ES Long-distance Separate-amplifier Detecting distance Y () Detecting distance Y () EH- EH- EH- % % Detecting distance Y () % % - - X () - - X () - - - X () Detecting distance Y (). %. %. EH- EH- EH- % %. %. % Detecting distance Y () % Detecting distance Y () %... - - X () - - - X () - - - X () Detecting distance vs. size and material of target (Typical) EH-.. using steel plate EH-A. using steel plate Y Target X t = Detecting distance Y ().... Detecting distance Y ().... These graphs show variations in detecting distance (Y ), obtained by using square metal plates (X x X x, where X is varied) after adjusting the detecting distance of the sensor head to a stable detecting distance using the standard target. One side of target X () One side of target X () EH-/S using steel plate EH-/S. using steel plate EH-/S. using steel plate Detecting distance Y ()..... One side of target X () Detecting distance Y ()..... One side of target X () Detecting distance Y ().... One side of target X ()
Long-distance Separate-amplifier ES Detecting distance Y () Detecting distance Y () Detecting distance Y () EH- using steel plate One side of target X () One side of target X () Detecting distance Y () EH-A using steel plate One side of target X () Detecting distance Y ().... EH- EH- using steel plate EH- using steel plate EH-.... Detecting distance Y () using steel plate One side of target X () using steel plate One side of target X () One side of target X () EH- using steel plate EH- using steel plate EH-...... Detecting distance Y () Detecting distance Y () One side of target X () One side of target X () One side of target X () Hints on Correct Use Mounting type Secure the sensor head with a screw at a position or more from the tip of the head. (Tightening torque: N m max.) Threaded type M screw min. When mounting the threaded-type sensor head, do not tighten beyond the torque specified in the following table. Detecting distance Y (). using steel plate Tightening torque E H- N m max. E H- N m max. E H- N m max. E H- N m max. E H- N m max. E H- N m max. E H- N m max. Photoelectric Safety Light Curtains Pressure Prograable Logic Controllers Counters, Control Units High Precision Vision Systems Bar Code Readers Displacement Thrubeam Measuring Instruments Analog Sensor Controllers Video Microscope Technical Guide
ES Long-distance Separate-amplifier Wiring Use a coaxial cable to connect the sensor head to the amplifier. Limit the length of extension to within m ( m for models EH- and EH-). Amplifier unit (ES-X) Sensor cable end treatment Shield Surrounding metal Shielded-type sensors can be flush-mounted in a metal base. of the non-shielded type, however, should be mounted according to the guidelines given below in order to minimize interference from the surrounding metal. ød d M odel D ( min. ) d ( min. ) EH- EH- EH- EH- EH- EH- * Fold back the shielded cable over the sheath. Sensor cable connections To connect the sensor cable, insert the end of the cable through the entry () port (), tighten the screw () (), connect the core wire () to the terminal (), and then tighten the screw (). For connections to the EH-///, contact KEYENCE for more information. Interference When installing two or more sensors of the same model face-to-face or in parallel, separate by the distance specified in the following table to prevent interference. D istance F ace-to-face ( min. ) Parallel ( min. ) E H- () No space required E H-A () No space required E H-(S) () No space required EH-(S) ( ) No space required E H-(S) () (no space required) E H- () (no space required) EH-A ( ) (no space required) EH- ( ) () EH- ( ) (no space required) E H- () (no space required) EH- ( ) (no space required) EH- ( ) (no space required) EH- ( ) No space required Mounting/dismounting the amplifier unit on DIN-rail or mounting bracket Hook the rear of the amplifier unit on the DINrail. Push the amplifier unit forward to hook the front of the unit. To dismount the amplifier unit, push the unit forward and unhook the front of the unit. How to use the attached sticker Write the sensor number on the rectangular sticker and stick it on the dust cover. Stick the round sticker over the round cover hole if the sensitivity adjustment trier setting should not be changed. Round sticker Rectangular sticker [Note] The above figures apply when the trier is turned to its optimal position for stable detection. The figures in parentheses apply when an optional interference prevention adapter is connected parallel to the sensor head (Except for ES-X). Contact KEYENCE for further information.
Long-distance Separate-amplifier ES Dimensions Unit: EH- EH- ø coaxial cable ø. ø coaxial cable Photoelectric EH- EH-S EH- EH- M x P Across-flats:, t = Across-flats:, t = M x P ø. coaxial cable ø ø. ø. coaxial cable spiral tube * Minimum bending radius:. Across-flats:, t = M x P M x P Across-flats:, t =. ø. coaxial cable EH-A EH- EH-S EH- ø. ø. coaxial cable ø. ø. ø ø. coaxial cable ø. ø. spiral tube *Minimum bending radius: ø. coaxial cable ø. coaxial cable Safety Light Curtains Pressure Prograable Logic Controllers Counters, Control Units High Precision Vision Systems Bar Code Readers Displacement Detecting surface x ø. coaxial cable ø. coaxial cable EH-S ø ø. ø ø. spiral tube coaxial cable * Minimum bending radius:. Thrubeam Measuring Instruments Analog Sensor Controllers Video Microscope Technical Guide
ES Long-distance Separate-amplifier Amplifier Unit: EH- ES-DC x ø. mounting hole. ø. ø coaxial cable EH-. ø. M x P ø. coaxial cable Across-flats:, t = (.) EH- Teflon cap (For protection against welding spatter) OP- (for EH-) OP- (for EH-) ø Across-flats:, t =. ø. coaxial cable M x P ø M x P ø M x P EH- OP- (for EH-) ø ø ø. ø. coaxial cable Across-flats:, t =. M x P EH- ES-X ø, X. core Cable length : m ø ø. coaxial cable. M x P Across-flats:, t =. EH-A.. ø. coaxial cable x ø. mounting hole Slot*. ø. mounting hole.. Detecting surface.. * Detail of slot