EC28A 28mm Size Ring Type EC28C A low-profile unit with 4mm height and good operation feel Typical Specifications Items Specifications Rating 10mA 5V DC Operating life Encoders NEW 50,000 cycles -40 to 85 -40 to 90EC28C Operating temperature range Product Line Actuator length mm Detent torque mNm Number of detent Minimum order unitpcs. Number of pulse Japan Product No. Export EC28A1520401 75 30 2010 15 400 127 2010 2010 15 30 15Initial 20 10After reflow 18 18 30 15 EC28A1560401 800 1 EC28A1850402 EC28A1870401 420 840 EC28A1560501 2 480 480 EC28C1520401 3 Ring Type Packing Specifications Tray Number of packagespcs. 1 case /Japan 1 case /export packing Export package measurements mm EC28A15, EC28A18 400 800 366x509x287 EC28A1560501 420 840 360x540x380 EC28C1520401 480 480 290x440x205 Product No. Dimensions Unit:mm No. PC board mounting hole dimensions (Viewed from mounting side) Style 2-3.5 4 o18 2-1.5 15 120 28.9 $ 2-o1.5 hole 3-4 120$ 23 o21.6 5 R1 A C B 10.75 12 0.2 0$ o 2-1.6 16 17 3- 3-7.5 3-3 15 3-3 2-2.5 1 2-2.6 o28 3-3.5 Hollow Shaft 25 Reflow EC28A1550401 15 Insulated Shaft 127 DIP Drawing No. Metal Shaft Structure A C B 3-o1 hole Refer to P.315 for soldering conditions. 305 EC28A 28mm Size Ring Type EC28C 25 2-3.5 3-17 4 2-1.5 3-14 Unit:mm 0. 2 Style R1 3-3.5 3- Encoders No. PC board mounting hole dimensions (Viewed from mounting side) 25 28.9 3-17 4 3-14 1.5 16 120 16 5 1.5 15 21.6 3-3 23 2 8 18 2-2.5 Metal Shaft 2 120 Y 2-2.6 2-1.5 2-1.6 3 2-3.5 le 20 3- ho A CB 3- R1 3-3.5 hole 1 AC B Y 10.75 0.2 Insulated Shaft 1 28.9 3 1.5 15 Y 3-3.1 X 7 1 R1 0. 2 3-7.5 3- 3-2.1 AC B Y 10.75 B signal Sliding Noise EC28A18 OFF OFF ON ON Detent stability position CW direction A signal B signal V1=V2=2.5V max. Test circuit OFF OFF ON ON Detent stability position CW direction *Signal A and signal B output at detent positions cannot be specified. R Output waveform 5V DC t R Terminal A Terminal B t V1 5V EC28A15 EC28C15 0 12 Output Wave A signal 120 14.5 32-1.45 2 8 X 1 A CB 0 hole 15 16 1.5 le Ring Type 5 3 ho 23 3-4 12 3-3.05 4 18 2-2.6 3-2.1 21.6 Hollow Shaft 2-1.6 Mounting surface 306 15 Dimensions 16 21.6 3-3 2-2.5 2 8 18 V2 Encoder Terminal C Measurement conditionRotation speed 360/s ON OFF ON Sliding direction t : Masking time to avoid chattering At R = 5k Chattering : 5ms max. Bounce : 5ms max. AC Y 10 Encoders List of Varieties Ring type Type 21mm size EC21A Series 28mm size EC21C EC28A 35mm size EC28C EC35A EC35AH NEW Photo Encoders Incremental Two phase A and B Output Shaft types Ring type Number of pulse / Number of detent 9/18 15/30 Metal Shaft W Dimensions mm Incremental Three phase A, B and C D 21.6 15/30 15/30 18/18 22 28 28 21.6 29 29.5 H 6xABC/18 10xABC/30 15/30 35 4 Insulated Shaft Operating temperature range 4.5 -40 to 85 -40 to 90 Operating life -40 to 85 50,000 cycles Automotive use Hollow Shaft Life cycle (availability) Rating 10mA 5V DC Ring Type Max./min. operating Electrical currentResistive load performance Insulation resistance Mechanical performance 10mA / 1mA 100M min. 250V DC Voltage proof 300V AC for 1minute or 360V AC for 2s 300V AC for 1minute or 360V AC for 1s 300V AC for 1minute or 360V AC for 2s 300V AC for 1minute or 360V AC for 1s Detent torque 75mNm 125mNm 167mNm 178mNm Initial 7 12 - 4 mNm After reflow 75mNm 127mNm 2010mNm 3015mNm Initial 2010mNm After reflow Push-pull strength Push 300V AC for 1minute or 360V AC for 2s 187mNm 3015mNm 125mNm 187mNm 3015mNm 100N Pull 100N Shaft configuration Ring type Terminal type Insertion Switch type -- -- -- -- -- -- Contact arrangement -- -- -- -- -- -- Travelmm -- -- -- -- -- -- Operating forceN -- -- -- -- -- -- -- -- -- -- -- -- Rotational torque -- -- -- -- -- -- Rating -- -- -- -- -- -- Contact resistance -- -- -- -- -- -- Operating life -- -- -- -- -- -- 307 308 Switch Specifications Switch ON position Page 302 305 Encoders Soldering Conditions 315 Encoders Cautions 316 Note Indicates applicability to all products in the series. 272 Encoders Soldering Conditions Reference for Manual Soldering Series Soldering time No. of solders EC05E, EC09E, EC10E, EC111, EC11B, EC11E, EC11G, EC11K, EC12D, EC12E, EC18A, EC21A, EC28A, EC35A, EC35AH, EC35B, EC40A, EC45A, EC50A, EC60B, EM11B, EM20B, EC21C, EC28C, EC35CH 350 max. 3s max. 1 time EC11J 35010 3 1 s 0 2 times Encoders Tip temperature Reference for Dip Soldering Dip soldering No. of solders Heating time Soldering temperature Soldering time EC09E, EC11B, EC111, EC11E, EC11G, EC11K, EC18A, EC21A, EC28A, EC35A, EC35AH, EC35B, EC50A, EC60B 100 max. 2 min. max. 2605 51s 2 times max. EC10E, EC12D, EC12E, EM11B 100 max. 1 min. max. 2605 31s 2 times max. EC40A 110 max. 1 min. max. 260 max. 10s max. 1 time 100 max. 2 min. max. 260 max. EM20B 80 max. 1 min. max. 260 max. 3s max. 2 times max. 2 times max. Ring Type Example of Reflow Soldering Condition Temperature profile 300 Temperature (C ) Hollow Shaft EC45A 5s max. Insulated Shaft Soldering surfacetemperature Metal Shaft Preheating Series A B 200 C D 100 Room temperature Time (s) Pre-heating E max. F max. G max. H max. Series A B C D E F G H No. of reflows EC11J 260 230 180 150 2 min. max. 3s 40s 4 min. max. 2 times max. EC05E 250 min. 230 min. 180 150 60s to 120s 30s to 40s 2 times max. EC21C 230 to 245 220 200 150 60s to 120s 25s to 60s 300s max. 1 time max. 260 230 180 150 2 min. min. 3s 40s 230s max. 1 time max. EC28C, EC35CH 1. When using an infrared reflow oven, solder may sometimes not be applied. Be sure to use a hot air reflow oven or a type that uses infrared rays in combination with hot air. 2. The temperatures given above are the maximum temperatures at the terminals of the encoder when employing a hot air reflow method. The temperature of the PC board and the surface temperature of the encoder may vary greatly depending on the PC board material, its size and thickness. Ensure that the surface temperature of the encoder does not rise to 250 or greater. 3. Conditions vary to some extent depending on the type of reflow bath used. Be sure to give due consideration to this prior to use. 315