24 VDC INPUT · 40 W BACKPLANE POWER · REVISION M
Emerson IC695PSD040M PACSystems RX3i 24 VDC Power Supply
A single-slot RX3i DC power supply whose 40 W budget and nonredundant operating boundary must be preserved.
Overview
IC695PSD040M is the revision-M execution of the PACSystems RX3i 24 VDC, 40 W power supply. It provides 5.1 VDC and 3.3 VDC backplane power plus a 24 VDC relay supply for compatible output-module circuits.
The module occupies one Universal Backplane slot and is not the multipurpose load-sharing version. Only one IC695PSD040 is permitted in a backplane, so an RX3i power-budget review is required before modules are added or exchanged.
Specifications
Features
Single-slot DC conversion
Uses one RX3i backplane position while converting the plant 24 VDC source into controller rails.
Three supply functions
Feeds the 5.1 V and 3.3 V backplane loads and the compatible 24 V relay circuits.
Fault visibility
Power-supply fault status is available to the RX3i CPU for system diagnostics.
Defined nonredundant role
The hardware boundary clearly separates this unit from multipurpose PSD140 load-sharing supplies.
About IndustryParts
https://www.industryparts.com/Exact identity before quotation
IndustryParts prepares IC695PSD040M enquiries around the complete manufacturer label, requested quantity and destination. For controlled replacements, include the host-system record, field photographs and configuration evidence that apply to this exact execution.
Applications
DC-powered RX3i controller
Supplying a Universal Backplane from a documented 24 VDC control-power source.
Single-slot migration constraint
Maintaining CPU slot position where a narrow DC supply is required.
Power-budget-controlled expansion
Supporting a rack whose combined 5.1 V, 3.3 V and relay loads remain inside 40 W.
Lifecycle
Calculate
Record the module-by-module RX3i power demand and the available 24 VDC source capacity.
Connect
Verify polarity, grounding, conductor size and overvoltage-protection jumper arrangement before energizing.
Monitor
Confirm POWER status, absence of supply faults and stable controller operation at expected rack load.
FAQ
Can IC695PSD040M be paired with a second RX3i supply for redundancy?
No. The IC695PSD040 design is limited to one per Universal Backplane and does not support parallel or redundant operation.
What power record should accompany an IC695PSD040M enquiry?
Provide the complete rack module list, calculated 5.1 V and 3.3 V loads, relay demand, DC source rating and label photograph.
Why is input polarity important for IC695PSD040M?
The manufacturer warns that common external DC sources feeding multiple supplies must maintain identical polarity and a common system ground.
Does the M suffix change the need to verify IC695PSD040M compatibility?
No. Revision M must be retained in the installed record, and the host backplane plus rack load still determine suitability.
What checks close an IC695PSD040M replacement?
Verify input voltage and polarity, POWER indication, an empty CPU fault table for supply faults and stable operation under the documented rack load.
Send the complete IC695PSD040M label, requested quantity and destination.
