Description
Product Introduction
The IC695PSD040 is a 40-Watt DC power supply for PACSystems RX3i universal backplanes. It accepts 18 to 30 VDC input and delivers the necessary voltages for CPU, I/O, and specialty modules in the rack. This module provides reliable power distribution in 24VDC control systems.
In real installations, the separate +24VDC relay output proves handy for field wiring. It handles moderate rack loads without the higher capacity of 120W versions, making it a good fit for smaller or expansion racks where you watch every watt.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 18 to 30 VDC |
| Output Power | 40 Watts |
| Outputs | +5.1 VDC, +3.3 VDC, +24 VDC relay |
| Input Power Consumption | 60 Watts max |
| Overcurrent Protection | Yes |
| LED Indicators | Power OK, Fault, Overtemp, Overload |
| Rack Compatibility | RX3i Universal Backplanes |
| Operating Temperature | 0°C to 60°C |
Application Scenarios & The “Trench” Experience
We got called to a packaging facility at midnight. The main rack power supply died during a run. Lights out, line stopped. No immediate spare. The IC695PSD040 we carried let them bring the rack back up fast. Saved the night shift from cleaning out a jammed line the next morning.
- Packaging Machinery – Compact control racks – Fits tight panels where 40W covers the CPU and a handful of I/O modules.
- Material Handling – Conveyor system expansions – Powers additional I/O without overloading the main supply.
- OEM Machine Builders – Stand-alone control panels – Clean 24VDC input matches common machine power schemes.
- Water Treatment – Remote pump stations – Reliable operation on battery-backed 24VDC supplies.
A municipal water plant used these during a phased upgrade. They replaced aging supplies one rack at a time. No surprises, steady voltage, and the LED diagnostics made troubleshooting straightforward when one unit finally showed overload.
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; we test them on actual RX3i racks.
- Inbound Inspection – Verify input/output terminals, check for physical damage and OEM markings.
- Live Rig Testing – Full load test with typical RX3i modules, monitor voltage stability.
- Electrical Parameter Checks – Verify output voltages under load, test overcurrent protection.
- Firmware/Indicator Verification – Confirm all status LEDs function correctly.
- Final QC & Anti-static Packaging – Thermal checks, secure packaging for transit.
Every supply gets powered up and stressed before it ships.
- IC695PSD040
- IC695PSD040
The Veteran’s Tech Trap Guide
⚠️ Calculate your total rack power budget. 40 watts goes quick once you add I/O modules and specialty cards. Exceed it and the supply will go into overload protection.
❗ Input voltage matters. Run it too close to the 18VDC minimum under load and you risk brownouts during dips. Aim for solid 24VDC.
⚠️ Watch the relay output current. The +24VDC relay supply has limits. Don’t use it for heavy solenoid loads without checking the datasheet.
One thing to watch out for is mixing power supplies in the same rack. Follow Emerson guidelines on redundant or parallel setups to avoid fighting between units.
Frequently Asked Questions
Is the IC695PSD040 hot-swappable? No. You need to power down the rack to replace it safely.
What input voltage does it need? 18 to 30 VDC nominal. Best performance comes from a regulated 24VDC source.
Can it power a full RX3i rack? It depends on your module mix. Use it for lighter configurations or as an expansion supply. Heavier racks need the 120W versions.
Why choose surplus over new? Tested, functional units at lower cost. We verify output stability and protect against counterfeits.
Does it include the +24VDC relay output? Yes. Separate terminal for powering field relays and contacts.
How do I know if it’s failing? Watch the front LEDs for fault, overtemperature, or overload conditions.
Will it work with older RX3i backplanes? Yes, on universal backplanes. Confirm your specific rack type before ordering.
Start Chat
