Description
Honeywell 8C-TDILA1
Technical Specifications
- Channel count: 16 digital input channels
- Supported signals: 24 V DC active switch, dry contact
- Input threshold: 15 V DC minimum ON, 5 V DC maximum OFF
- Group isolation: 500 VAC between field side and backplane
- Debounce time: Software configurable 1 ms to 20 ms
- Backplane interface: C300 I/O subrack bus
- Operating temperature: 0 °C to +60 °C
- Hot swap support: Online card replacement
Functional Features Low-channel-count form factor, suits small unit I/O configurations. Software-adjustable debounce filter for mechanical contact signals. Per-channel open wire diagnosis. Per-channel LED indicates input state. Configurable channel polarity for sink or source devices.
Application Scenarios Small unit limit switch and interlock signal collection Low-channel-count discrete monitoring loops Cost-optimized small C300 system I/O Spare part replacement for low-density digital input card faults
Performance Parameters
- Input response time: Matches configured debounce time
- Wire break detection response: ≤180 ms
- Channel crosstalk attenuation: ≥-60 dB
- Mean time between failures: 550,000 hours
Material Composition FR4 PCB substrate Group isolation optocouplers RC debounce filter components TVS protection diodes Gold-plated backplane edge fingers
Structural Features Compact C300 low-density I/O form factor. Front detachable terminal block for 16 channel wiring. Group isolation barrier between field side and backplane. Per-channel input state LEDs.
Working Principle Field switch contacts connect to input terminals. Optocouplers isolate field signals, converting contact state to logic level for sampling. Debounce filtering removes mechanical contact bounce. Sampled channel states are packaged into bus frames, transmitted to the C300 controller. Open wire detection monitors loop continuity; broken switch wiring triggers a channel fault flag.
Installation Requirements Insert the card into a dedicated low-density digital input slot. Wire field switches to labeled terminals. Configure debounce time per channel in Control Builder. Verify channel state operation during commissioning.
Usage Notes Never apply AC high voltage to input terminals, this destroys optocoupler isolators. Debounce time set too short causes unstable reading for aging switches. Long field cable runs require shielded cable to reduce EMI noise. Terminal blocks must be fully locked; loose connections cause intermittent channel dropout.
