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PS31*A

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Yokogawa PS31*A is a legacy CENTUM XL or microXL cabinet power-supply module for an installed control-system power path.
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Technical specifications for PS31*A

  • Manufacturer:
    Yokogawa
  • Part Number:
    PS31*A
  • Product Family:
    Yokogawa Centum XL
  • Product Type:
    CENTUM XL Power Supply Module
  • Stock:
    1
  • System Family:
    Yokogawa CENTUM XL / microXL
  • Module Role:
    Cabinet power supply
  • Installation Type:
    Rack-mounted module
  • :
  • :
  • Weight:
    1.22 kg
  • Estimated shipping dimensions:
    3.5x37.5x17.7cm
  • Tariff Code:
    8504408500
  • Country of origin:
    Japan
  • 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 Power Path Installation Diagnostics Applications

Features:

  • Legacy power-supply module for documented CENTUM XL or microXL cabinets
  • Dedicated cabinet position and mating interface for control electronics
  • Serviceable power-path component for controlled system restoration
Integration focus: Confirm the complete suffix, cabinet family, supply position and upstream feed before installation.

Engineering consequence: Cabinet power loss can originate upstream or downstream of the module, so diagnosis must separate all three sections.

Commissioning focus: Restore loads in stages while monitoring cabinet rails and controller startup behavior.

Apter Power supports the Yokogawa PS31*A CENTUM XL and microXL Power Supply Module with exact-model quotation and cabinet checks.
Yokogawa PS31*A CENTUM XL Power Supply Module Manuals,Datasheets,Link

Important Notice: Use the complete model, suffix and installed-system documentation before service or installation.

  • Confirm the cabinet family and documented supply position before removing the module.
  • Verify upstream feed and protective devices, then check downstream rails for a short or abnormal load.
  • Use the installed drawing to separate the supply path from field-power circuits during diagnosis.
  • Inspect card guides, connector contacts and retention hardware for heat or mechanical damage.
  • Seat the module fully in the specified position without disturbing adjacent control cards.
  • Keep ventilation openings clear and apply power through the approved cabinet startup sequence.
  • No cabinet power can result from upstream feed loss, module failure or a downstream short; test each section separately.
  • An immediate trip after energization usually requires staged isolation of connected loads.
  • Unstable rails or intermittent restarts can indicate connector resistance, cooling problems or excessive load.
  • Installed CENTUM XL or microXL cabinets that specify the PS31*A power path.
  • Planned power-module maintenance during process-unit outages.
  • Control-system life-extension projects retaining the original cabinet and backplane.
Description
Yokogawa PS31*A is a legacy cabinet power-supply module associated with installed CENTUM XL and microXL control-system hardware sets.

In service, PS31*A supports the cabinet electronics power path, so the documented rack position, upstream feed, mating connector and downstream load condition are as important as the module itself during fault finding.

Using PS31*A in the specified cabinet position lets maintenance teams recover the original power architecture without redesigning the backplane or control modules, provided the complete suffix and site drawings are verified before energization.
Alternative Names
PS31 A PS31A Yokogawa PS31*A Yokogawa PS31A CENTUM XL PS31*A PS31 power supply module
Technical notes
PS31*A is part of the cabinet power path in installed CENTUM XL or microXL hardware. A missing upstream feed, a resistive connector or a downstream short can reproduce a supply fault. Separating these sections before changing hardware protects the cabinet and gives maintenance teams a more reliable fault diagnosis.
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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.
Why can the cabinet remain unpowered after PS31*A is installed?
Verify the incoming feed, protective device, connector seating and downstream rail condition. Power loss elsewhere in the path can produce the same symptom as a failed module.
What should be checked before energizing PS31*A?
Confirm the cabinet family and supply position, inspect the mating connector, verify protective earth and test for an abnormal low-resistance condition on the downstream rails.
Why might PS31*A cause repeated cabinet restarts?
Intermittent input power, excessive downstream load, high connector resistance or inadequate cooling can make the output unstable. Check the full path while monitoring the cabinet rails.
Can PS31*A be moved to another open slot?
Only if the cabinet documentation defines that position for the same supply function. An open slot does not guarantee the required connector or power-path relationship.
What should be done if PS31*A or its connector shows heat discoloration?
Keep the cabinet de-energized and inspect contact resistance, load and ventilation. Reusing a heat-damaged mating connector can cause another failure.
How should PS31*A be tested after installation?
Restore power with loads controlled, confirm stable cabinet rails and normal controller diagnostics, then reconnect the process functions in the approved sequence.