Series H42 Heavy Duty Encoders


Series H42 Dynapar Encoder

 H42 Heavy Duty Encoders
Dynapar Encoder Brand Logo

Quick Specs...

  • Economical, industry standard 2.5" industrial duty encoder
  • Ultra-reliable, "no glass" design – uses unbreakable code disk
  • ESD/RFI and transient electrical noise immunity tested to EN50082-2
  • Complete electrical protection for overvoltage and reverse polarity
  • Rugged cast aluminum housing
  • Same-day shipment of all models

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Overview Industry/Application Specifications Related Info  

Overview / Design Principle:

An unbreakable code disk meets the demands of the most severe shock and vibration generating processes. Use of long life bearings keep tough loads from disrupting internal alignment, avoiding failure due to the disk "crashes" so typical in competitive encoders. Protection against installation problems such as wiring errors prevents the encoder from damage, while immunity to electrical noise keeps the encoder signals intact.

Resolutions from 1 to 600 pulses per revolution; quadrature coding; and differential line driver outputs lets the Series H42 fit well into a wide range of unidirectional and bidirectional applications.

Series H42 encoder is a direct, modernized replacement for the popular Series 42 heavy duty encoders. Use of latest technology optical emitters and sensors, surface mount assembly and precisely fabricated metal components, delivers high reliability and performance in a compact and economical package.

Features and Benefits:

Mechanical / Environmental Features

  • Unbreakable code disk
  • Rugged, industrial duty cast aluminum housing
  • Long life, 80 pound bearings
  • Up to 7200 RPM
  • 0 to 70° C operating range
  • Quick connect/disconnect MS connector
  • 3/8" stainless steel shaft

Electrical Features

  • Noise Immune to ESD, RFI and electrical transients
  • High current outputs
  • Over-Voltage protection
  • Reverse Voltage protection
  • High current outputs
  • 100 kHz frequency response

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 H42 encoder is an economical, rugged, general-purpose, optical encoder that generates an accurate pulse output proportional to shaft rotation.

Standard Operating Characteristics
Code: Incremental
Resolution: 1 to 600 PPR (pulses/revolution)
Accuracy: (Worst case any edge to any other edge) ± 7.5 arc-min.
Format: Two channel quadrature (AB) with complementary outputs
Phase Sense: A leads B for CW shaft rotation as viewed from the shaft end of the encoder; see Ordering Information
Quadrature Phasing: 90° ± 20° electrical
Symmetry: 180° ± 18° electrical
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 90 mA max., not including output loads
Outputs: 7272 Push-Pull and Differential Line Driver: 40 mA sink or source
Frequency Response: 100 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

Connector Termination: 7 pin, style MS3102E-16S-1P
Mating Connector: 7 pin, style MS3106A-16S-1S (MCN-N5)

Shaft Loading: (at 0.25" from encoder face) 80 lbs. radial, 80 lbs. axial
Shaft Speed: 7200 RPM max.
Shaft Runout: 0.001" max. TIR
Moment of Inertia: 3.0 x 10-4 oz-in-sec2
Weight: 13 oz.

Operating Temperature: 0 to +70° 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: NEMA12/IP54 (dirt tight, splashproof)

Available Specifications:

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