8C-TDILB1 Honeywell 32-Channel Redundant DI IOTA
Manufacturer: Honeywell
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Part Number: 8U-TDILB1
Condition：New with Original Package
Product Type: Digital Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Honeywell 8C-TDILB1 Series 8 Module
Configured for 24 VDC digital signal acquisition in Experion Series 8 systems, the Honeywell 8C-TDILB1 (8C-TDILB1 Digital Input Module) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 8C-TDILB1 (PWA 51307143-175) |
| Brand | Honeywell |
| Origin | India |
| Weight | 560 g |
| Dimensions | Technical data not specified |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 24 VDC nominal voltage; module current consumption 95 mA |
| Module Type | Redundant Digital Input IOTA Module |
| Number of Channels | 32 channels (IOTA capacity) / 16 channels per module segment |
| Input Voltage Range | 18-30 VDC |
| Response Time | Less than 1 ms |
| ON Sense Threshold | >=13 VDC or >=3 mA |
| OFF Sense Threshold | <=5 VDC or <=1.2 mA |
| Input Impedance | 4.2 k ohm |
| Galvanic Isolation | 1000 VAC RMS or +/-1500 VDC |
| Insulation Rating | 600 V |
| Hardware Coating | Conformal-coated (8C designation) |
Process Control & DCS Instrumentation Properties
Operating within the Honeywell Experion PKS architecture, this unit provides precise discrete signal processing through its integrated 1000 VAC RMS galvanic isolation boundaries, protecting the core C300 controller networks from field-side voltage spikes. The component features high-speed digital input processing circuits with a sub-1 millisecond response time, executing state monitoring for limit switches, pushbuttons, and relays. The 8C designation defines this assembly as conformal-coated hardware, providing channel-to-channel isolation parameters and resistance against corrosive elements in harsh distributed control system environments.
Frequently Asked Questions
Q: What is the physical difference between the 8C-TDILB1 and the 8U-TDILB1 models?
A: The 8C-TDILB1 features a factory-applied conformal coating designed for harsh environments, whereas the 8U-TDILB1 is uncoated and restricted to standard, non-corrosive cabinet deployment.
Q: Does this termination assembly support redundant hardware configurations?
A: Yes. The 8C-TDILB1 DI R IOTA layout is explicitly designed to house redundant digital input modules, providing automatic state tracking and seamless bumpless transfer if a primary module fault is detected.
Q: What are the precise threshold metrics for state verification on the digital inputs?
A: The input circuit transitions to an ON state when voltage reaches or exceeds 13 VDC (or current reaches >=3 mA). It registers an OFF state when the signal drops to or below 5 VDC (or <=1.2 mA).
Field Installation Guidelines
Mount the Series 8 DI R IOTA baseplate onto a grounded standard DIN rail inside the designated instrument enclosure. Prior to inserting the 8C-TDILB1 hardware onto the backplane connector pins, ensure all field-side 24 VDC supply lines are de-energized. Terminate all field contact wiring at the IOTA screw blocks, enforcing correct polarity for the 18-30 VDC loop paths. Route all digital input signal lines through isolated wire ducts separate from heavy AC motor leads or switching inductive circuits to avoid electromagnetic noise propagation. Ensure that the total cable run resistance does not cause a voltage drop below the 13 VDC ON threshold at the terminal block interface under live operation.