The Novanta/Dynamics Research 153/121-1000-120CBW is an incremental optical rotary encoder that converts rotary motion into electrical signals for precision position and speed feedback. Housed in a compact 1.625-inch diameter aluminum or plastic enclosure weighing 6 oz maximum, this totally enclosed encoder delivers up to 2,000 counts per revolution, expandable to 8,000 counts with external 4X circuitry.
Technical Specifications
The encoder operates at a maximum speed of 3,000 RPM with 50 kHz count channel output frequency, supported by a slew speed rating of 5,000 RPM. Maximum shaft angular acceleration reaches 105 rad/sec², while moment of inertia is limited to 1.0 × 10⁻⁴ oz-in-sec². The 303 series stainless steel shaft rides on ABEC class 5 sealed or shielded bearings for extended service life.
– Key Features
• Multiple output formats: sinewave (30 mV p-p minimum into 2 kΩ load at 50 kHz), TTL-compatible complementary squarewave, and differential line driver TTL outputs
• Zero reference output delivers 100 mV minimum usable signal into 5 kΩ load at 10 kHz; Model 153 GZ aligns with output quadrant AB with ¼ cycle standard width
• Signal levels: 74LS04 stage provides 8 mA sink current; 75158 stage delivers 40 mA sink and ±1 mA source current
• Rise/fall times of 1 µsec maximum into 1,000 pF load capacitance
• Sinewave output DC offset ±1% of p-p signal maximum
• Environmental resilience: 10 G shock (11 ms duration), 5 G vibration (20 Hz to 2 kHz), 98% RH non-condensing humidity; storage temperature -25°C to +90°C
– Typical Applications
Machine tools, assembly machinery, phototypesetters, robotics, and X-Y stage encoding systems.
– Compatibility & Integration
Standard units ship without connector. The Model 150, 152, and 153 family structure provides design flexibility for system integration.
