Description
Hard-Numbers: Technical Specifications
- Protocol Support: Redundant IONet Ethernet
- Port Count: 2 × 100Mbps RJ45 IONet ports
- Input Channels: 13 isolated vibration/position inputs
- Sampling Rate: 10,000 Hz (10kHz) per channel
- Input Bandwidth: DC to 4300 Hz
- Isolation Rating: 1500 Vrms field-to-backplane
- Operating Temperature: -40°C to +70°C
- Power Draw: 7.2 W typical
- CMRR: -50 dB at 50/60 Hz
- Connector: 50-pin VHDCI field termination
- Environmental: G3 conformal coating, Class I Div 2 hazardous rated
IS420YDOAS1B
The Real-World Problem It Solves
Low-level vibration signals from shaft probes degrade in noisy plant environments, causing false trips or missed bearing faults. This module isolates and digitizes micro-volt signals at high speed to preserve waveform integrity.
Where you’ll typically find it:
- Gas/steam turbine shaft radial and axial vibration racks
- Turbine supervisory (TSI) protection systems in combined-cycle plants
- Compressor train vibration monitoring in refineries and offshore platforms
Bottom line: It delivers reliable, high-fidelity vibration data for critical machine protection without EMI corruption.
Hardware Architecture & Under-the-Hood Logic
This pack uses an onboard BPPC processor with dedicated ADCs for parallel channel sampling. No controller intervention is needed for raw signal capture. Isolation barriers block ground loops across probe loops.
- Eddy-current probe signals enter via 50-pin connector and pass through surge suppression.
- Isolated signal conditioning amplifies micro-volt inputs to ADC levels.
- 16-bit ADCs sample all 13 channels simultaneously at 10kHz.
- Onboard processor filters, scales, and time-stamps vibration waveforms.
- Processed data transmits over redundant IONet to controllers for TMR voting.
Field Service Pitfalls: What Rookies Get Wrong
Unshielded Probe Wiring RoutingRookies run vibration cables alongside power or drive wiring. Induced 50/60Hz noise masks real vibration frequencies and triggers false alarms.
- Field Rule: Use full-shielded twisted-pair cable; separate by ≥30cm from AC power conductors.
Incorrect Probe Gap VoltageSetting probe DC gap voltage outside -9V to -11V DC range saturates inputs. Module shows “signal lost” but no hardware fault.
- Quick Fix: Power down; set gap voltage to -10.0V DC before energizing I/O pack.
Mismatched Terminal BoardsUsing IS410TVBAS1A with causes channel misalignment and flatlined vibration readings.
- Field Rule: Pair only with IS410TVBAS2B terminal board; verify part number before installation.
IS420YDOAS1B
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.
