Component Snapshot At-a-Glance

• Model: TEAM BL0170, factory part suffix PC0010-P
• Alt. P/N: BL0307 (6-channel mixed 4-20mA analog only); BL0308 (6AI+14DI/DO mixed signal); no direct drop-in RTD cross-replacement
• Product Series: TEAM BL0000 VME peripheral I/O board, fully compatible with ALSTOM ALSPA C80/HPC turbine control racks
• Hardware Type: Single-height VME plug-in PCB, front terminal block for 2/3-wire Pt100 RTD wiring, multi-channel fault LED bank, gold-plated rear VME edge connector
• Key Feature: 16 fully isolated Pt100 RTD temperature input channels, built-in cold junction compensation, software scaled engineering temperature output
• Primary Field Use: Condition 2/3-wire Pt100 thermal sensors for lube oil, bearing, exhaust gas, and casing temperature monitoring on steam/gas turbine governors.

Hard-Numbers: Technical Specifications

• Protocol Support: VME64 parallel backplane bus, no onboard external fieldbus ports
• Port Count: 16 independent RTD input terminals, supports 2-wire or 3-wire Pt100 sensors
• Baud/Data Rate: VME backplane fixed 10ms total channel scan refresh cycle
• Operating Temperature: -20°C to +60°C cabinet operational; -40°C to +85°C storage
• Isolation Rating: 1500Vrms opto-isolation per individual RTD channel
• Power Draw: 5.1W total module draw at nominal 24VDC rack supply
• Main Input Power: 18–36VDC station battery, nominal 24VDC VME backplane feed
• Sensor Type: Pt100 platinum RTD, 0–400°C calibrated range
• Wiring Support: 2-wire (internal lead resistance compensation) / 3-wire balanced RTD circuits
• EMC Compliance: IEC 61000-6-2 substation surge and VFD noise immunity
• PCB Treatment: Full acrylic anti-sulfur, anti-salt fog conformal coating
• Physical Weight: 0.55kg single VME slot form factor

The Real-World Problem It Solves

Using multiple BL0307 general analog boards for temperature monitoring wastes multiple VME slots. General analog boards lack dedicated RTD lead resistance compensation, creating steady temperature offset drift as field wiring ages.Unisolated RTD wiring creates common-mode voltage skew that distorts temperature readings, triggering false turbine over-temperature runback interlocks during MV breaker switching transients.Where you’ll typically find it:

• Steam/gas turbine governor ALSPA C80/HPC VME racks for bearing, exhaust and lube oil Pt100 sensors
• Refinery large compressor unit supervisory control cabinets for process equipment thermal monitoring
• Fossil power plant generator auxiliary cooling water and stator temperature acquisition racksThis single-slot 16-channel dedicated RTD board eliminates multiple general analog cards and built-in lead resistance correction removes long-term wiring drift errors.

Hardware Architecture & Under-the-Hood Logic

This board carries a dedicated 16-bit ADC MCU for RTD resistance-to-temperature conversion, split into fully isolated sensor input zone, analog conversion zone, and VME backplane logic zone to block cross-talk between field sensors and rack CPU.

1. Raw 24VDC backplane rack power feeds multi-stage LC EMI filter to strip breaker and VFD switching noise before powering RTD excitation circuits and ADC core.
2. Each RTD channel receives constant low-current excitation; onboard circuit automatically compensates for 2-wire cable lead resistance to eliminate temperature offset from wiring length.
3. Isolated ADC converts raw RTD resistance values to scaled °C engineering units per factory calibration; each channel has independent open/short sensor fault detection.
4. All 16 scaled temperature values buffer to VME backplane registers, transmitted to rack CPU on fixed 10ms scan cycle.
5. Front panel individual LED per channel: green = valid RTD signal, red = open sensor / shorted wiring fault for fast on-site troubleshooting without workstation access.

Field Service Pitfalls: What Rookies Get Wrong

Swapping BL0307 / BL0308 Mixed Analog Boards In Place Of BL0170

New techs grab general analog spares without matching full part number. BL0307/BL0308 lack dedicated RTD excitation and lead compensation circuits; temperature readings drift heavily and trigger constant high-temperature false alarms.Field Rule: Only deploy BL0170 for all Pt100 temperature monitoring slots; store BL0307/BL0308 mixed signal spares in separate labeled storage bins.

Hot-Swapping Module While Live RTD Sensor Wiring Remains Terminated

Junior crews pull the VME card while field Pt100 wiring stays connected. Open-circuit transients surge backward through the VME backplane, corrupting CPU temperature trend registers and triggering unplanned turbine runback interlocks.Quick Fix: Lock out and de-energize all field RTD wiring at cabinet terminal blocks before extracting the BL0170 module.

Using 2-Wire RTD Without Enabling Lead Resistance Compensation

Rookies wire long 2-wire Pt100 runs and skip software lead correction. Cable resistance adds permanent temperature offset up to 15°C, leading operators to misjudge bearing thermal load.Field Rule: Enable internal lead resistance compensation on all 2-wire RTD loops longer than 10 meters; 3-wire circuits require no extra software correction.

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.