EC35 Optical Commutation Kit Encoder
- Now 500 to 60,000 CPR
- Quick, simple assembly
- A/B/Z differential outputs
- U/V/W commutation outputs (differential or open-collector)
- 2,000 to 240,000 quadrature states per rev.
- Frequency response from DC up to 1 MHz
- Fits shaft diameters from 0.197 in. (5mm) to 0.375 in. (3/8 in.)
- Single 5V supply
See more info below
Configure the EC35
EC35 Product Description
The EC35 quick assembly optical commutation encoder is designed for high volume, low cost, OEM motion control applications. The EC35 provides A/B/Z incremental outputs and U/V/W outputs for brushless motor commutation.
The EC35 mounts to the motor using 2 screws on a 1.28" or 1.812" diameter bolt circle. The precision machined encoder hubdisk pushes on when the encoder assembly is put on the motor shaft. This design securely grips the shaft without set screws. A built in, removable spacer tool ensures that the encoder disk is automatically set to the correct gap when the encoder housing is mounted. The encoder can be "timed" by rotating a ring on the assembly and pressing the ring in with a simple tool to lock everything into place.
The EC35 is powered by a single 5V supply and comes with a 15-pin connector that provides differential outputs for A/B/Z and U/V/W. Open-collector U/V/W outputs are available as an option. Single ended output can be obtained by only using the + outputs of each differential pair. The internal 26C31 line drivers can source and sink 20 mA at TTL levels. The recommended differential receiver is the industry standard 26C32. Maximum noise immunity is achieved when the differential receiver is terminated with a 150 Ω resistor in series with a .0047 μF capacitor placed across each differential pair.
Please Note: Due to the EC35's push-on hub design, it is recommended for use as a one-time installation.
View here or download the specifications
|Operating Temperature||-20 to 105
|Vibration, 10Hz to 2kHz, sinusoidal||20||G|
|Shock, 6 millisecond, half-sine||75||G|
|Electrostatic Discharge, IEC 61000-4-2||±12||kV|
|Codewheel Moment of Inertia||6.48 x 10-5||oz-in-s2|
|Required Shaft Length (for center hole encoder cover)||0.5||0.565||in.|
|Shaft Axial Play||-0.003||0.003||in.|
|Mounting Shaft Total Runout||-||0.001||in.|
Maximum RPM, CPR ≤ 2,500
|Maximum RPM, CPR = 4,000||-||12,000||RPM|
|Maximum RPM, CPR = 10,000||-||6,000||RPM|
|Maximum RPM, CPR = 20,000||-||3,000||RPM|
|Maximum RPM, CPR = 40,000||-||1,440||RPM|
|Maximum RPM, CPR = 60,000||-||960||RPM|
|Base to Mounting Surface Screw Torque||-||3||in-lbs|
|Technical Bulletin TB1001 - Shaft and Bore Tolerances||Download|
|Base/Housing||20% glass filled PBT|
CPR ≤ 2500
CPR > 2500
no output load, max. frequency output
|Differential High Level Output||2.5||3.5||V||loh = -8 mA|
|Differential Low Level Output||0.5||V||lol = 8 mA|
|Differential Rise/Fall Time||100||ns|
|Open collector pullup voltage||30||V||lload = 100 mA|
|Open collector "on" resistance||0.2||ohm||lload = 100 mA|
CPR ≤ 2,500
CPR = 4,000
CPR = 10,000
CPR = 20,000 / 40,000 / 60,000
Incremental Output Timing
|Symmetry, S1, S2||108||180||252||elec. deg.|
|Quadrature Delay, Q||45||90||135||elec. deg.|
|Index Width, W||45||90||135||elec. deg.|
A leads B for CCW shaft rotation, and B leads A for CW rotation viewed from the top side of the encoder.
Commutation Output Timing
|State width, 4 pole||27||30||33||angular deg.|
|State width, 6 pole||17||20||23||angular deg.|
|State width, 8 pole||12||15||18||angular deg.|
|State width, 10 pole||9||12||15||angular deg.|
|State width, 12 pole||7||10||13||angular deg.|
|Pin||"D" Output Option||"C" Output Option||"0" pole Option|
|1||A+ (A Quadrature)||A+ (A Quadrature)||A+ (A Quadrature)|
|3||B+ (B Quadrature)||B+ (B Quadrature)||B+ (B Quadrature)|
|5||Z+ (Index)||Z+ (Index)||Z+ (Index)|
|7||U+ (U Commutation)||U (Open collector)||no connection|
|8||U-||no connection||no connection|
|9||V+ (V Commutation)||V (Open collector)||no connection|
|10||V-||no connection||no connection|
|11||W+ (W Commutation)||W (Open collector)||no connection|
|12||W-||no connection||no connection|
|13||+5V power||+5V power||+5V power|
|15||no connection||no connection||no connection|
- Cables and connectors are not included and must be ordered separately.
- US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.
3D Model Downloads
Please configure your product first to download a 3D model.
(Note: The formats below will become links if there are 3D models available.)
- SolidWorks format
- IGES format
- Parasolid format
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