Series HC25 Incremental Encoders


Series HC25 Encoder

 HC25 Incremental Encoders
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Quick Specs...

  • Ultra-reliable, heavy-duty Size 25 (2.5") encoder
  • Complete electrical protection and noise immunity
  • Environmentally sealed to NEMA 12 / IP54
  • Up to 5000 PPR

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Overview Industry/Application Specifications Related Info  

Overview / Design Principle:

Protection against installation problems such as wiring errors prevents the encoder from damage, while immunity to electrical noise keeps the encoder signals intact. A NEMA4/IP66 sealing option protects against damage from contamination.

Packaged in an industry standard 2.5" enclosure, the Series HC25 offers a variety of mechanical options: servo or face mounting, and 1/4" or 3/8" shafts. Electrical options include: resolutions from 3,000 - 5,000 pulses/revolution; bidirectional operation with optional index; single ended open collector or push-pull outputs, or differential line drivers; and connector or cable exit terminations.

The Series HC25 utilizes the latest technology optical emitters and sensors, surface mount assembly and precisely fabricated metal components to deliver high reliability and performance in a compact and economical package.

Features and Benefits:

Mechanical / Environmental Features

  • Extended temperature range available
  • Industry Standard, Size 25 Form Factor
  • NEMA12 / IP54 or NEMA4 / IP66 rating

Electrical Features

  • Noise Immune to ESD, RFI and electrical transients
  • High current outputs
  • Over-Voltage protection
  • Reverse Voltage protection
  • Output Short-Circuit Protection

The Dynapar Advantage:

  • Innovative, high quality leading edge technology encoder products
  • Broad commercial - industrial grade product line
  • Fast 3 Day Delivery and customized built to order solutions available
  • Global Manufacturing & Service Support
  • Fast-Friendly Customer Service & Technical Support with Multi-Lingual Capabilities
  • Global Network of Authorized Resellers
  • Competitive Product Warranty:  2 Years  


The Dynapar brand Series HC25 is a rugged, reliable and economical encoder for industrial motion applications.

Standard Operating Characteristics
Code: Incremental
Resolution: 3000 to 5000 PPR (pulses/revolution)
Accuracy: (Worst case any edge to any other edge) ± 10.8°/PPR
Format: Two channel quadrature (AB) with optional Index (Z) and complementary outputs
Phase Sense: A leads B for CW or CCW shaft rotation as viewed from the shaft end of the encoder; see Ordering Information
Quadrature Phasing: 90° ± 25° electrical
Symmetry: 180° ± 25° electrical
Index: 90° ± 25° electrical (gated with B low)
Waveforms: Squarewave with rise and fall times less than 1 microsecond into a load capacitance of 1000 pf

Input Power: 4.5 min. to 26 VDC max. at 80 mA max., not including output loads
Outputs: 7273 Open Collector: 30 VDC max., 40 mA sink max.
7272 Push-Pull and Differential Line Driver: 40 mA, sink or source
Frequency Response: 250 kHz min.
Electrical Protection: Overvoltage, reverse voltage and output short circuit protected
Noise Immunity: Tested to EN50082-2 (Heavy Industrial) for Electro Static Discharge, Radio Frequency Interference, Electrical Fast Transients, Conducted and Magnetic Interference

Mating Connector : 7 pin, style MS3106A-16S-1S (MCN-N5);
10 pin, style MS3106A-18-1S (MCN-N6);
5 pin, style M12: Cable with connector available
8 pin, style M12: Cable with connector available

Shaft Loading: 40 lbs. radial, 30 lbs. axial
Shaft Speed: 10,000 RPM max. (See Frequency Response)
Starting Torque: (max at 25° C) HC525: 1.0 oz-in;
HC625: 2.5 oz-in
Moment of Inertia: 2.83 x 10-4 oz-in-sec2

Operating Temperature: Standard: 0 to +70° C;
Extended: -40 to +85° C
Storage Temperature: -40 to +90° C
Shock: 50 G's for 11 milliseconds duration
Vibration: 5 to 2000 Hz at 20 G's
Humidity: to 98% without condensation
Enclosure Rating: HR525: NEMA12/IP54 (dirt tight, splashproof);
HR625: NEMA4/IP66 (dust proof, washdown)

Available Specifications:

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