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1734-VHSC24

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Allen-Bradley 1734-VHSC24 is a Series C 24 V DC very high speed counter module with A/B/Z inputs and two protected source outputs.
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Technical specifications for 1734-VHSC24

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1734-VHSC24
  • Product Family:
    Point I/O 1734
  • Product Type:
    POINT I/O 24 V DC Very High Speed Counter Module
  • Stock:
    1
  • Documented series:
    Series C
  • Input architecture:
    1 group of A/Aret, B/Bret, and Z/Zret
  • Input voltage:
    24 V DC
  • Input filter selections:
    50 Hz, 500 Hz, 5 kHz, 50 kHz, or none
  • Maximum input frequency:
    1 MHz X1; 500 kHz X2; 250 kHz X4
  • Source outputs:
    2 outputs; 0.5 A at 24 V DC
  • Compare windows:
    4
  • Output supply range:
    10...28.8 V DC
  • Output diagnostics:
    Short-circuit and open-wire detection
  • POINTBus current:
    180 mA maximum
  • Keyswitch position:
    2
  • Weight:
    0.03 kg
  • Estimated shipping dimensions:
    5.66x1.21x7.75cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Singapore
  • 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 Specifications Counter Mode Setup Compare Outputs Product Applications

Features:

  • High-speed acquisition: counter and encoder modes reach the documented frequency limits
  • A/B/Z interface: one 24 V DC input group supports count and position signals
  • Compare-driven outputs: two protected source outputs can follow four compare windows
1734-VHSC24 handles pulse and encoder events that exceed the timing role of a standard digital input module.

Its usable input frequency depends on encoder multiplication and filter selection, while the 24 V input limit changes with ambient temperature.

Compare outputs add local response capability, but their supply, load, and programmed fault action remain part of commissioning.

Availability of 1734-VHSC24 is subject to Apter Power inventory and sourcing confirmation.
Allen-Bradley 1734-VHSC24 POINT I/O 24 V DC Very High Speed Counter Module Manuals, Datasheets, 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.
Allen-Bradley 1734-VHSC24 POINT I/O 24 V DC Very High Speed Counter Module Specs

General

  • ManufacturerAllen-Bradley
  • Model1734-VHSC24
  • ConditionNew Original ready stock
  • Product FamilyPOINT I/O 1734
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.

Match frequency and filtering

  • X1 mode: use the published 1 MHz maximum without input filtering.
  • X2 mode: observe the 500 kHz encoder limit.
  • X4 mode: observe the 250 kHz encoder limit.
  • Filter: select 50 Hz through 50 kHz only when the required pulse timing remains visible.

Coordinate output action and faults

  • Window assignment: bind each source output to the intended compare window.
  • Supply: provide 10...28.8 V DC within the load design.
  • Short circuit: choose and document cycling or latched fault behavior.
  • Open wire: interpret detection while the output is commanded off.

Supported product applications

  • Incremental encoders: process A/B/Z feedback in X1, X2, or X4 modes.
  • High-speed counting: capture pulse trains up to the applicable frequency limit.
  • Position windows: operate protected source outputs from configured count comparisons.
  • Machine monitoring: bring fast event and direction data into a POINT I/O station.
Description
For pulse and encoder feedback, 1734-VHSC24 is a Series C POINT I/O very high speed counter for 24 V DC A, B, and Z input signals. The published frequency limit changes with X1, X2, or X4 configuration.

Two source outputs on 1734-VHSC24 can be assigned to four compare windows. Rockwell Automation documents short-circuit protection, programmable fault behavior, open-wire detection while an output is off, and a 10...28.8 V DC output-supply range.

Application engineering for 1734-VHSC24 should align sensor voltage, selected input filter, counting mode, output load, and ambient-temperature derating. Terminal-base keying and controller data mapping also need to match the recorded Series C configuration.
Revisions

Revision Part #

Also known as

1734-VHSC24 Series C
1734-VHSC24/C, Series C
Alternative Names
Allen-Bradley 1734-VHSC24 Rockwell Automation 1734-VHSC24 AB 1734-VHSC24 1734VHSC24 POINT I/O 24 V high speed counter 1734-VHSC24 1734-VHSC24 Series C counter module
Technical notes
Encoder multiplication changes the usable frequency of 1734-VHSC24, while filter choice and ambient derating constrain the 24 V input. The engineering record should connect X1/X2/X4 mode, A/B/Z wiring, compare-window logic, output fault response, and Series C controller mapping.
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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.
How does encoder multiplication change the usable frequency of 1734-VHSC24?
The published maximum is 1 MHz in X1, 500 kHz in X2, and 250 kHz in X4 when no input filter is applied.
When should an input filter be enabled on 1734-VHSC24?
Select a filter only after comparing noise frequency, minimum pulse width, encoder speed, and the required count response.
Why must ambient temperature be considered with the 24 V inputs of 1734-VHSC24?
The official derating curve limits maximum input voltage as temperature rises, so the installed sensor supply must remain inside that boundary.
How can the two outputs of 1734-VHSC24 react to measured position?
Each protected source output can be tied to any of four compare windows defined by the module configuration.
What does an output fault on 1734-VHSC24 require technicians to distinguish?
Separate a short circuit, open wire, missing output supply, unsuitable load, and programmed latch or cycling response before replacing the module.
Which commissioning evidence makes 1734-VHSC24 count direction easier to verify?
Record A/B/Z polarity, selected mode, filter, observed input indicators, known motion direction, compare values, and controller count data.