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ICS Triplex T8431C Analog Input Module with 40 Channels, 3.9µA Resolution, and 0.5ms Sample Update
ICS Triplex T8431C Analog Input Module with 40 Channels, 3.9µA Resolution, and 0.5ms Sample Update
40 Channels Analog Input Module
3.9µA Resolution ICS Triplex T8431C
0.5ms Sample Update TMR Input Module
Place of Origin:
USA
Brand Name:
ICS triplex
Model Number:
T8431C
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Product Details
Estimated Shipping Size:
3x30.3x26.4cm
Weight:
1.18 Kg
Maximum Withstanding:
±2.5kV Dc
Channel To Channel Crosstalk:
-40 To –60 DB
Operating Temperature:
-5°C To 60°C (23°F To 140°F)
Non-operating Temperature:
-25°C To 70°C (-13°F To 158°F)
Temperature Change:
0.5ºC/min
Operating Humidity:
10 – 95% RH Non-condensing
Highlight:
40 Channels Analog Input Module
,3.9µA Resolution ICS Triplex T8431C
,0.5ms Sample Update TMR Input Module
Payment & Shipping Terms
Minimum Order Quantity
1
Price
66USD
Packaging Details
Brand new and original
Delivery Time
2-3 work days
Payment Terms
T/T
Supply Ability
in stock
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Product Description
| System Supply Voltage Range | 20 to 32V DC |
| Number of Inputs | 40 Channels |
| User Defined Thresholds | 4-off |
| Input Current Range | 0-22mA |
| Input Voltage Range | 0-6 VDC |
| Sample Update Time | 0.5ms |
| Resolution | 3.9μA (1/256mA) |
| Event Resolution | 1ms |
| Time-stamp Accuracy | ±0.5 ms |
| Sustained Working | ±250V DC |
Technical Q&A: Advanced Module Capabilities
Q01 | Power Rails: Managing the 20V to 32V DC Supply Spectrum
The module is engineered for nominal 24V DC infrastructure but accommodates a +33% surge or a -17% drop (brownout). This overhead is critical for systems using battery-backed UPS supplies where float-charge voltages often sit at 27.6V. The T8431C internal regulators maintain efficiency across this range to prevent localized hotspots, ensuring the ±0.5ms timestamping remains thermally stable.
Q02 | Logic Discrimination: Implementation of the "4-off" User Defined Thresholds
These thresholds allow for the configuration of Namur NE43-style fault detection. By defining trip points for Under-range (<3.6mA), Over-range (>21mA), and two specific alarm/trip levels, the T8431C can trigger an immediate SOE (Sequence of Events) log. This hardware-level logic offloads the main CPU, providing deterministic fault branching before the application code even executes.
Q03 | Quantization Precision: The Significance of 3.9μA Resolution
This high bit-depth minimizes quantization error in PID control loops. When calculating rate-of-change (derivative) in pressure or flow, 3.9μA resolution ensures that the system detects minute fluctuations. This precision is vital for Triple Modular Redundant (TMR) voting, as it reduces the "drift noise" between the three internal slices, preventing nuisance disagreements.
Q04 | Determinism: Analyzing the 0.5ms Sample Update Window
The T8431C performs high-speed sampling across all 40 channels every 500 microseconds. In high-speed turbomachinery or ESD (Emergency Shutdown) scenarios, this sub-millisecond update rate ensures that the Trusted TMR backplane has the most current data for its 2oo3 (Two-out-of-Three) voting cycle, effectively eliminating input-scan latency as a safety bottleneck.
Q05 | Sequence of Events (SOE): Clock Synchronization & Jitter
Event Resolution (1ms) is the minimum detectable gap between two distinct state changes. Time-stamp Accuracy (±0.5ms) is the module's drift relative to the System Master Clock. This ensures that in a post-mortem plant trip analysis, signals across multiple T8431C modules are synchronized within a 1ms window for accurate "First-Out" alarm determination.
Q06 | Electrical Ruggedness: Sustained ±250V DC Working Voltage
This is a Ruggedization Metric. It signifies that the input stage can survive accidental contact with high-voltage power rails or significant Common-Mode Voltage spikes without catastrophic failure of the 40-channel bank. It is an "Industrial Survival" spec, not an operational rating for high-voltage sensing.
Q07 | Channel Integrity: The 40-Channel High-Density Constraint
The module utilizes Galvanic Isolation and sophisticated filtering on each of the 40 channels. The current sensing (0-22mA) and voltage sensing (0-6V) circuits are decoupled to ensure that a massive surge on Channel 1 does not "ghost" into Channel 40. This is a mandatory requirement for SIL-3 separation in a single-module footprint.
Q08 | Input Hybridity: Managing 0-22mA vs. 0-6V DC Ranges
The input stage uses a high-precision shunt resistor for 0-22mA current modes. The 0-6V DC range is typically utilized for bridge sensors or specific voltage-output transmitters. The 3.9μA resolution translates to a high-impedance voltage resolution in the 0-6V mode, maintaining linear accuracy for non-standard signal conditioning.
Q09 | TMR Voting Logic: Slice Disagreement Handling
The Trusted TMR architecture performs Mid-Value Voting. If one slice drifts significantly, the internal diagnostics flag a "Channel Fault," but the system continues to operate on the two healthy slices (fault-tolerant mode). The 0.5ms update time allows the system to isolate the failing slice before the process variable exceeds safety limits.
Q10 | Environmental Survivability: Supply Ripple and Noise
The module is designed for EMC Immunity in harsh industrial zones. Its internal power conditioning rejects high-frequency ripple, ensuring the 0.5ms sampling remains jitter-free. This allows the module to be deployed in cabinets alongside VFDs (Variable Frequency Drives) and other heavy EMI-generating hardware without compromising the ±0.5ms timestamping.
System Compatibility
DCS & PLC Specialists
- Emerson: DeltaV
- Invensys: Triconex, Foxboro I/A
- Honeywell/ABB: All major series
- Siemens/Rockwell: Legacy CPUs & Iskamatic
Turbine & Monitoring
- Bently Nevada: 3500/3300 Series
- Westinghouse: Ovation
- GE: Fanuc 90/30, 90/70
Service Standard
Response: Under 24 hours
Warranty: 1 full year, 100% quality assured
Price: Affordable solutions for tight maintenance budgets
Delivery: Global, secure, and rapid
Ready to ship from our spot stock
Miya Zheng | Sales Manager @ Amikon
+86 180 2077 6792
Order Process
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The Pro: A real human (and an expert one at that) will reach out to verify your specs. No guesswork, just precision.
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