Introduction
The Sensata BEI Sensors EX11 Series Miniature Incremental Rotary Optical Encoder was developed to provide a high precision, low cost enclosed shaft encoder for light duty applications. This series offers the benefits of the Opto-ASIC design with 1024 line counts in a 1.1-inch diameter size. Packaged in a glass-filled polycarbonate housing with 1/8” stainless steel shaft and precision bearings, the EX11 provides superior performance at a lower cost. This Series is capable of operating over a temperature range of 0°C to +70°C without degradation of signals. Proven design and Duncan Electronics’ experience make this series perfectly suited for high-volume OEM applications, including robotics, process control, and instrumentation.
Electrical Specifications
| Parameter | Specification |
| Code | Incremental |
| PPR | 200 to 1024 (see ordering options) |
| Supply Voltage | 5V ±5% @ 80mA max |
| Output Format | Quadrature with index and complements |
| Output Type | Line driver or buffer driver depending on model |
| Rise Time | 1.0 µs max |
| Frequency Response | Refer to graph |
Mechanical Specifications
| Parameter | Specification |
| Weight | 2.0 oz (approx.) |
| Shaft Diameter | 0.1247 +0.0000/-0.0003 |
| Shaft Load | Axial 2 lbs, Radial 1 lb |
| Torque | Starting <0.4 oz-in, Running <0.2 oz-in |
| Inertia | 3.0 x 10⁻⁵ oz-in/sec |
| Mounting Holes | 4 places #2-56 @ 90° on 0.75” B.C. |
| Flange Mount Holes | 4 places 0.100 dia through holes |
| Shaft Coupling | Must be flexible (do not hard mount) |
Environmental Specifications
| Parameter | Specification |
| Operating Temperature | 0°C to +70°C |
| Storage Temperature | -25°C to +90°C |
| Termination Type | 28 AWG ribbon cable with 10-pin connector |
Order Options
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