AB 845H-SJDZ24FWY2C
AB 845H-SJDZ24FWY2C
AB 845H-SJDZ24FWY2C
AB 845H-SJDZ24FWY2C
AB 845H-SJDZ24FWY2C
AB 845H-SJDZ24FWY2C
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  • Lifecycle status

    Discontinued

845H-SJDZ24FWY2C

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Allen-Bradley 845H-SJDZ24FWY2C is a 1024 PPR incremental encoder with an 8–24 VDC input, differential line-driver output and side connector.
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Technical specifications for 845H-SJDZ24FWY2C

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    845H-SJDZ24FWY2C
  • Product Family:
    Allen Bradley Switches
  • Product Type:
    Size 25 Incremental Encoder
  • Stock:
    1
  • Encoder type:
    Incremental rotary
  • Frame size:
    Size 25
  • Supply voltage:
    8–24 VDC
  • Resolution:
    1024 pulses per revolution
  • Output channels:
    A, B and 1/2-cycle zero index gated to channel B
  • Output phase relationship:
    Quadrature, 90° ±22°
  • Signal symmetry:
    50% ±10%
  • Output circuit:
    Differential line driver
  • Maximum response frequency:
    210 kHz
  • Maximum mechanical speed:
    6000 rpm
  • Starting torque:
    2.5 N·cm
  • Rotor moment of inertia:
    15 g·cm²
  • Maximum axial shaft load:
    89 N
  • Maximum radial shaft load:
    178 N
  • Operating temperature:
    0 to 60°C
  • Storage temperature:
    -25 to 90°C
  • Relative humidity:
    Up to 98%, non-condensing
  • Shock resistance:
    50 g for 11 ms
  • Vibration resistance:
    20 g from 4 to 2000 Hz
  • Connector orientation:
    Side mounted
  • Dimensions:
    12.2 × 6.7 × 9.5 cm
  • Weight:
    0.48 kg
  • Tariff Code:
    9029209000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Interface Matching Mechanical Fit Commissioning Application
  • 1024 PPR quadrature feedback
  • 8–24 VDC differential line-driver electronics
  • Size 25 square-flange mechanical format

845H-SJDZ24FWY2C supplies A/B quadrature and gated index feedback for position, speed and registration functions in established motion systems.

Its full ordering code defines more than resolution: shaft and flange geometry, electrical output, connector orientation and mating arrangement all form part of compatibility.

A controlled replacement preserves coupling alignment and cable shielding, then verifies phase direction, count scaling and index position at low speed before production operation.

Availability, condition, price, and shipping time for 845H-SJDZ24FWY2C are confirmed during quotation.

Allen-Bradley 845H-SJDZ24FWY2C Incremental Encoder Product Family and Support Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Confirm differential A and B channel inputs
  • Preserve the gated zero-index connection
  • Match the side connector and documented pinout
  • Verify square flange and mounting-hole pattern
  • Maintain shaft alignment and coupling clearance
  • Keep axial and radial loads within limits
  • Check phase direction by slow manual rotation
  • Compare one revolution with 1024 counts
  • Verify index location before full-speed operation
  • Machine-axis position feedback
  • Conveyor speed and registration measurement
  • Cut-to-length and indexing equipment
Description
845H-SJDZ24FWY2C converts shaft rotation into quadrature A/B pulse trains plus a gated index signal for machine position and speed feedback.

The label identifies Series C, 1024 pulses per revolution and 8–24 VDC operation; the ordering code specifies differential line-driver electronics and a side-mounted connector arrangement.

Replacement work should preserve shaft geometry, flange pattern, connector orientation, signal polarity, cable shielding and the controller count configuration before the machine is recommissioned.
Alternative Names
845H-SJDZ24FWY2C 845H SJDZ24FWY2C 845HSJDZ24FWY2C Bulletin 845H 1024 PPR Encoder Series C 845H-SJDZ24FWY2C
Technical notes
Allen-Bradley 845H-SJDZ24FWY2C requires exact shaft, flange, connector and differential-signal matching; preserve shielding, verify phase direction and index position, then commission at low speed before production release.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can Allen-Bradley 845H-SJDZ24FWY2C be replaced by another 845H encoder with the same PPR?
No. Allen-Bradley 845H-SJDZ24FWY2C must also match the shaft, flange, side connector, supply range, output driver, index behavior and pinout.
What controller input should be checked before wiring Allen-Bradley 845H-SJDZ24FWY2C?
Confirm that the counter accepts differential quadrature signals at the required frequency and that its input voltage, termination and index logic match Allen-Bradley 845H-SJDZ24FWY2C.
How should noise problems be prevented with Allen-Bradley 845H-SJDZ24FWY2C?
Route the Allen-Bradley 845H-SJDZ24FWY2C cable away from motor leads, preserve twisted differential pairs and shielding, and bond the shield according to the machine grounding plan.
What mechanical checks matter before fitting Allen-Bradley 845H-SJDZ24FWY2C?
Verify coupling alignment, shaft insertion depth, axial and radial loading, flange fasteners and connector clearance before tightening Allen-Bradley 845H-SJDZ24FWY2C.
Can Allen-Bradley 845H-SJDZ24FWY2C be megger tested with machine wiring?
Do not apply insulation-test voltage through Allen-Bradley 845H-SJDZ24FWY2C electronics; isolate the encoder and follow the machine electrical test procedure.
What commissioning test should follow replacement of Allen-Bradley 845H-SJDZ24FWY2C?
Turn the shaft slowly, verify A/B phase direction and index position, then compare commanded and measured travel before returning Allen-Bradley 845H-SJDZ24FWY2C to full speed.
Is an 847 encoder an automatic drop-in replacement for Allen-Bradley 845H-SJDZ24FWY2C?
Treat migration from Allen-Bradley 845H-SJDZ24FWY2C as an engineering change that compares mounting, shaft, connector, electrical interfaces and controller scaling before approval.