The Model 121 is an auto-aligning, thru-bore incremental encoder with all-metal construction for use in servo motor control and robotics applications. It accepts shafts up to 5/8 inch (15 mm) and operates from 0° to 100°C with optional commutation tracks for 4, 6, 8, or 12 poles. The encoder provides quadrature output with an optional index, supports output types including open collector, push-pull, and line driver, and has a maximum frequency response of 100 kHz standard, with 200 kHz and 300 kHz options. It is CE marked, features an IP50 dust seal, and has a housing made of aluminum and zinc alloy weighing 4 oz. The bore tolerance meets ANSI B-4.1 H7 for g6 shafts, with radial runout of 0.002 inch max and axial end play dependent on CPR resolution. The maximum acceleration is 5 × 10⁵ rad/sec², and the moment of inertia is 2.5 × 10⁻⁴ oz-in-sec².
EPC has taken the performance of modular encoders to a new level with the Model 121 Auto-Aligning Modular Encoder. This new and innovative design requires no calibration, gapping or special tools for hassle-free installation. The Model 121 incorporates the latest Opto-ASIC technology for enhanced performance. Common problems with other modular encoder designs are warping and deflection, caused by their extensive use of plastic. Warping and deflection are virtually eliminated by the Model 121’s all-metal construction. For brushless servo motor applications, the Model 121 can be specified with three commutation tracks to provide motor feedback. The optional 100° C temperature capability allows servo motors to operate at higher power outputs and duty cycles.
| Encoder Products Company | |
|---|---|
| Product Category | Rotary Encoders |
| Product Number | Model 121 Accu-Coder® |
| Product Name | Incremental Rotary Encoder |
| Encoder Type | Incremental; Modular Kit |
