Allen-Bradley 845T-DL33ACK Incremental Optical Encoder

Allen-Bradley 845T-DL33ACK is a Bulletin 845T size-20 incremental optical encoder designed for reliable motion feedback in harsh industrial environments, delivering 360 pulses per revolution from an an 11–24 V DC power supply with a push-pull single-ended output. This rugged encoder carries a NEMA 4/IP66 enclosure rating, supports a broad operating temperature of 0 to 60 C, and weighs about 0.44 kg (14 oz), making it suitable for washdown and dusty production lines. The 845T family provides solid electrical performance with an electrical frequency response up to 100 kHz, enabling high-speed feedback for precise motor control. With its size-20 form factor and Rockwell Automation heritage, it is commonly used for servo feedback in CNC machines, packaging lines, and automated equipment requiring reliable, compact rotary sensing.