Series X25 Incremental Encoders


Series X25 Encoders

 X25 Incremental Encoders

Series X25 UL listings

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Quick Specs...

  • Heavy duty industrial enclosure with 1/2" diameter conduit entry
  • Up to 5000 PPR with optional marker
  • Approved for National Electrical Code (NEC) Class 1 & 2, Divisions 1 & 2, Groups C,D,E,F,G

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Overview Industry/Application Specifications Related Info  

Overview / Design Principle:

Electrical outputs are electronically compatible with almost all drives and PLC’s. Differential line driver outputs are available for long cable runs (hundreds of feet) and higher noise immunity.

Series X25 encoders are designed for use in environments stated in: UL Class I, Group C: atmospheres such as ethyl ether and ethylene; UL Class I, Group D: atmospheres such as acetone, ammonia, benzene, butane, cyclopropane, ethanol, gasoline, hexane, methanol, methane, natural gas, naphtha, and propane; Class II, Groups E, F & G: combustible metal dusts, including aluminum, magnesium, and their commercial alloys, and atmospheres containing combustible carbonaceous dusts, including carbon black, charcoal, coal, or coke dusts, and combustible dusts including flour, grain, wood, plastic, and chemicals.

Classifications of hazardous locations are subject to the approval of the authority having jurisdiction. Refer to Article 500 of the National Electrical Code (NEC).

Features and Benefits:

Mechanical / Environmental Features

  • Large stainless steel shaft (1/4" or 3/8") and shaft seal
  • Heavy-duty cast aluminum housing, and an O-ring seal
  • Heavy-duty ABEC precision bearings standard
  • Up to 5000 RPM slew speed

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  


These rugged, high-performance, incremental optical encoders are suitable for hazardous locations feature environmentally sealed, cast aluminum housings with 4-inch square flange mounting, and 1/2" conduit entry. A stainless steel shaft and a clear anodized housing provide corrosion resistance.

Standard Operating Characteristics
Code: Incremental
Resolution: 1 to 5000 PPR (pulses/revolution)
Accuracy: (Worst case any edge to any other edge) ≤ 1024 PPR (metal disk): ± 7.5 arc-min. > 1024 PPR (glass disk): ± 2.5 arc-min.
Format: Two channel quadrature (AB) with optional Index (Z) and complementary outputs
Phase Sense: A leads B for CCW shaft rotation as viewed from the shaft end of the encoder
Quadrature Phasing: 90° ± 25° electrical
Symmetry: 90° ± 25° electrical
Index: 2540 PPR and below: 180° ± 25° electrical; Greater than 2540 PPR: 90° ± 25° 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 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: 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

Shaft Loading: 40 lbs. radial, 40 lbs. axial
Shaft Speed: 5,000 RPM max.
Shaft Runout: 0.001" max. TIR
Starting Torque: (max at 25° C) 2.0 oz.-in
Moment of Inertia: 9.0 x 10-4 oz-in-sec2

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 2 G's
Humidity: to 98% without condensation
Weight: 4.5 lbs. (2.0 kg)
Enclosure Rating: NEMA4X/IP56 (dust proof, washdown)

Available Specifications:

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