Component Snapshot At-a-Glance
- Model:
- Alt. P/N: No factory alternate part number, direct cross to legacy UES815S power unit
- Product Series: Emerson CSI Machinery Health / DeltaV Condition Monitoring Rack Series
- Hardware Type: Plug-in eddy current probe regulated power driver module
- Key Feature: Precision ±1% stabilized 5VDC excitation tailored for non-contact eddy probe field wiring loops
- Primary Field Use: Supplies conditioned DC power and bias signal to eddy current displacement probes feeding A6140 dual-channel vibration input cards in DeltaV DCS racks
Hard-Numbers: Technical Specifications
- Input Voltage: 18–36VDC nominal 24VDC rack sourced supply
- Output Rating: 5VDC @3A fixed regulated output, ±1% voltage tolerance
- Protocol Support: Internal CSI backplane serial bus, no external fieldbus; analog bias for eddy probes
- Operating Temperature: -25°C ~ +70°C cabinet ambient range
- Isolation Rating: 2500V input-to-output galvanic isolation for field probe surge protection
- Power Draw: Max 18W full load consumption per module
- Mount Standard: Standard DeltaV M-series single-width DIN rack plug-in footprint
- Unit Weight: 0.45kg nominal per card
- Certifications: CE, RoHS, ISO13849-1 industrial safety certified
The Real-World Problem It Solves
Unregulated bench power supplies for eddy probes drift with cabinet thermal swings, causing erratic shaft displacement readings and false machinery trip alarms on critical rotating equipment. Discrete loose power wiring for each probe adds dozens of potential open-circuit fault points in high-vibration pump and turbine cabinets.
Where you’ll typically find it:
- Refinery steam turbine bearing vibration monitoring DeltaV racks
- Coal-fired power plant boiler feed pump condition monitoring marshall cabinets
- Offshore platform centrifugal compressor non-contact probe termination racks
It centralizes factory-calibrated eddy excitation power on DCS rack, eliminating field power drift and cutting intermittent vibration fault troubleshooting time.
Hardware Architecture & Under-the-Hood Logic
Active switching regulator PCB with onboard EMI filter circuitry; taps rack 24VDC bulk power then conditions fixed 5V bias specifically for eddy current proximity probes, backplane communication only for module health status reporting to DeltaV controller.
- Rear gold edge contacts pull unregulated 24VDC rack supply from DeltaV terminal base backplane traces.
- Onboard EMI filter suppresses VFD-induced line noise before feeding switching regulator stage.
- Precision feedback circuit locks output to fixed 5VDC, holding ±1% tolerance across full load and temperature span.
- Front terminal blocks route stabilized 5V bias + signal return out to field eddy probe cabling.
- Secondary low-speed backplane trace sends module overcurrent/undervoltage fault flags to upstream A6560 monitoring processor card.
Field Service Pitfalls: What Rookies Get Wrong
Cross-Wiring Standard 24V Field Power Into Probe Output Terminals
New techs run raw unregulated 24VDC into probe output screw terminals, instantly burning internal regulator IC and shorting connected eddy probes.
- Field Rule: Tag all front output terminals “5V PROBE ONLY”; strictly separate rack 24V input and probe output wiring runs.
Overloading Single With More Than Rated Probe Count
Stacking 4+ eddy probes on one module exceeds 3A output rating, triggering intermittent overcurrent dropouts and fluctuating shaft gap data.
- Quick Fix: Cap maximum 3 standard eddy probes per single per Emerson CSI wiring schematic.
Mounting Module Beside Unshielded VFD Output Cabling
Installing card adjacent unshielded variable frequency drive wiring induces high-frequency EMI, warping precision 5V output and drifting displacement measurements.
- Field Rule: Separate rack rows minimum 10cm from all VFD power cabling; route probe signal cable with full copper shield earthed single-end at cabinet ground bar.
Commercial Availability & Pricing Note
Please note: The listed price is for reference only and is not binding. Final pricing and terms are subject to negotiation based on current market conditions and availability.
