Component Snapshot At-a-Glance
- Model:
- Alt. P/N: 12P0680X072, VE4003S2B2
- Product Series: Emerson DeltaV DCS I/O Series
- Hardware Type: 8-channel 2-Wire Analog Input HART Module
- Key Feature: Channel-to-channel galvanic isolation for EMI rejection on 4-20mA loops
- Primary Field Use: Pull process pressure/temp/flow transmitter data into DeltaV control cabinets across refinery and utility plants
Hard-Numbers: Technical Specifications
- Protocol Support: HART 7, DeltaV LocalBus (RS478 backend bus)
- Port Count: 8 independent analog input channels, single backplane edge connector
- Baud/Data Rate: HART fixed 1200bps; LocalBus 312.5kbps system communication
- Operating Temperature: 0°C ~ +60°C rated continuous rack operation; -40°C ~ +70°C short-term ambient exposure
- Isolation Rating: 1500V channel-to-backplane isolation per UL61010 specs
- Power Draw: 12VDC LocalBus: 150mA max draw; Bussed field 24VDC: 300mA max supply
- Input Signal Range: Standard 4–20mA 2-wire loop powered transmitter input
- Enclosure Rating: IP20, cabinet-only installation, no field mounting capability
- Vibration Spec: 0.5g 16–150Hz continuous rack vibration tolerance for compressor room installs
The Real-World Problem It Solves
Field crews regularly fight intermittent PV drift and missing transmitter diagnostics when mixing non-HART and HART 4-20mA cards on DeltaV racks. Older single-channel cards bloat cabinet footprint and force mid-run shutdowns for spare card swaps.
Where you’ll typically find it:
- Refinery crude feed rack: Monitoring inlet pressure transmitters on distillation column feed lines
- Coal-fired power plant boiler cabinet: Pull RTD-converted 4-20mA drum level and furnace draft signals
- Offshore platform process MCC: Wellhead flow transmitter HART diagnostics collection for daily roundups
This single 8-channel card consolidates eight discrete transmitter loops while unlocking digital HART fault data without adding extra system interface hardware.
Hardware Architecture & Under-the-Hood Logic
This card mounts directly onto DeltaV I/O carrier backplane and carries an on-board 8-bit dedicated MCU per channel bank to convert raw analog current before bus transmission; backplane and field circuits maintain full galvanic separation at isolation barrier PCB layer.
- Field 24VDC loop voltage feeds 2-wire transmitter, returns modulated 4–20mA analog signal into individual channel input terminals
- On-board precision shunt resistor converts incoming current to low-level analog voltage for ADC sampling
- Per-channel MCU extracts embedded HART digital data superimposed onto analog waveform
- Compiled channel data packages route across isolated LocalBus interface to DeltaV controller backplane
- Controller reads values via system bus, pushes live PV and HART diagnostic tags into DeltaV database
Field Service Pitfalls: What Rookies Get Wrong
Improper Hot-Swap ExecutionNew techs pull this module live while field loop power remains energized, blowing channel input protection fuses on non-sparking classified loops. I’ve replaced 17 blown cards in a single month from this exact misstep.
- Field Rule: Cut field terminal block power first; only hot-swap with exclusively KJ1501X1-BC1 redundant rack PSU fitted and inductance <23uH on input wiring
Incorrect Terminal Block KeyingMisaligned rotary key pins between card and paired KJ4001X1-CA1 terminal block creates intermittent open loops that randomly drop transmitter PV mid-production run.
- Quick Fix: Match terminal block rotary key notch to BA1 card coding before locking wiring terminals into place.
Unshielded Cable Routing Next to VFD Power CablesRunning 4-20mA field wiring alongside 480V VFD feeder cables induces EMI, causing continuous PV bounce across all eight module channels.
- Field Rule: Separate analog signal wiring by minimum 30cm from all AC power trunking; use twisted-pair shielded cable with single-end shield earth at cabinet terminal only.
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.
