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H3 Ball Bearing Optical Shaft Encoder

H3 Features

  • Ball-bearing option tracks to 10,000 RPM
  • 2-channel quadrature, TTL squarewave outputs
  • 3rd channel index option available on some resolutions
  • 64 to 10,000 cycles per revolution (CPR)
  • 256 to 40,000 pulses per revolution (PPR)
  • Wide operating temperature
  • Single +5VDC supply

See more info below

Configure the H3

H3 Product Description

Restriction of Hazardous Substances

The H3 series ball-bearing optical shaft encoder has a glass-filled polymer enclosure. This non-contacting rotary to digital converter is designed to provide digital feedback information. The H3 is fully assembled with a brass shaft, two 1/4 in. ID by 1/2 in. OD ball bearings and a mounting plate. The mounting plate comes with 4 mounting holes for #2 - #4 size screws.

The H3 is designed to drive cables up to 10 feet long. For longer cable lengths, adding a PC4/PC5 differential line driver is recommended. A connection to the H3 series encoder is made through a 5-pin standard connector. The mating connectors are available from US Digital with several cable options and lengths.

Product Specifications

ENVIRONMENTAL

PARAMETER VALUE UNITS
Operating Temperature, CPR < 2000 -40 to 100 C
Operating Temperature, CPR ≥ 2000 -25 to 100 C
Electrostatic Discharge, IEC 61000-4-2 ± 4 kV
Vibration (10Hz to 2kHz, sinusoidal) 20 G
Shock (6 milliseconds, half-sine) 75 G

MECHANICAL

PARAMETER VALUE
Max. Acceleration 100000 rad/sec²
Max. Shaft Speed (mechanical) 10000 RPM (1)
Max. Shaft Torque 0.05 in-oz
Max. Shaft Loading 2 lbs.
Bearing Life life in millions of revs = (90/P)³
where P = radial load in pounds.
Weight 2.69 oz.
Max. Shaft Runout 0.006 in. T.I.R.
Mounting Plate Screw Torque (#2-56) 2-3
Moment of Inertia 0.001 oz-in-s²
Technical Bulletin TB1001 - Shaft and Bore Tolerances Download

(1) The maximum speed due to electrical considerations is dependent on the CPR. See the EM1 and EM2 product pages.

PHASE RELATIONSHIP

B leads A for clockwise shaft rotation, and A leads B for counterclockwise rotation when viewed from the shaft side of the encoder.

ELECTRICAL

  • Specifications apply over the entire operating temperature range.
  • Typical values are specified at Vcc = 5.0Vdc and 25°C.
  • For complete details, see the EM1 and EM2 product pages.
PARAMETER MIN. TYP. MAX. UNITS CONDITIONS
Supply Voltage 4.5  5.0 5.5 V  
Supply Current   27 33 mA CPR < 1000, no load 
  54 62 mA CPR ≥ 1000 and < 3600, no load
  72 85 mA CPR ≥ 3600, no load
Low-level Output     0.5 V IOL = 8mA max., CPR < 3600
    0.5 mA IOL = 5mA max., CPR ≥ 3600
  0.05   mA no load, CPR < 3600
  0.25   mA no load, CPR ≥ 3600
High-level Output 2.0     V IOH = -8mA max., CPR < 3600
2.0     V IOH = -5mA max., CPR ≥ 3600
  4.8   V no load, CPR < 3600
  3.5   V no load, CPR ≥ 3600
Output Current Per Channel -8   8 mA CPR < 3600
-5   5 mA CPR ≥ 3600
Output Rise Time   110   nS CPR < 3600
  50   nS CPR ≥ 3600
Output Fall Time   35   nS CPR < 3600
  50   nS CPR ≥ 3600

PIN-OUT

PIN DESCRIPTION
1 Ground
2 Index
3 A channel
4 +5VDC power
5 B channel

PRODUCT CHANGE NOTIFICATIONS

Title Date Description Download
Laser Marking - PCN 5253 6/17/2015 As part of our ongoing continuous improvement efforts, US Digital is changing the labeling/marking method for our E3, E6, H3, H6, S1, S2, and S6 products. Download
EM1 & EM2 Update - PCN 4199 1/14/2014 Based on our continuous process improvement program, US Digital is changing the current marking method for our EM1 and EM2 encoder modules to a serialization method. This change will allow for each module to have a unique code; the current marking method is based on a date code system that includes all encoder modules produced within a specific week/year. The serialization system will be based on a hexadecimal system. Download
EOL Sealed Housing Option - PCN 1021 4/11/2013 This PCN is a formal notification that US Digital is discontinuing the Sealed Housing option for the following products:
  • A2 Absolute Optical Encoder
  • A2T Absolute Optical Inclinometer
  • H1 Ball Bearing Optical Shaft Encoder
  • H3 Ball Bearing Optical Shaft Encoder
  • S1 Optical Shaft Encoder
  • S2 Optical Kit Encoder
The Sealed Housing option provides the encoder with the low-level capability of surviving in moisture environments, however, the encoder is NOT waterproof or intended to be used in applications where this is required.		 Download
EM1 LED Die - PCN 1016 2/7/2013 As part of US Digital's continual assurance of supply strategy, we have qualified additional sources for our LED die used in our EM1 encoder module, which in turn impacts all of the following products:

EM1, E2, E3, E5, E6, H1, H15, H3, H5, H6, HB5M, HB6M, HD25, PE, S1, S2, S5, S6, T5 and T6

The device specification will remain the same, i.e. there will be no change to form, fit, or function of the product(s) as specified by US Digital. The appropriate quality and reliability testing have been performed on representative products to ensure normal parametric distribution, consistent with US Digital's quality and reliability standards.		 Download

Additional Information

Product Notes

  • Cables and connectors are not included and must be ordered separately.
  • US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.

Datasheets

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