Application Scenarios
A specialty chemical manufacturer operating a reactor temperature control loop had exhausted available I/O slots in its HC900 rack. The reactor required monitoring of twelve type-K thermocouples, two 4-20 mA pressure transmitters, and one 0-10V level signal—a mix that would conventionally demand separate cards for temperature and high-level inputs. The maintenance team installed a single 900TCK-0001 module, configured each channel independently through Hybrid Control Designer software, and restored full monitoring without adding rack space or altering the existing field wiring topology. The module’s channel-to-channel isolation proved critical when a ground fault developed on a thermocouple sheath: the fault was contained to its single channel, and the remaining fifteen loops continued operating without interruption until the next scheduled maintenance window.
Parameter
| Parameter | Value / Description |
|---|---|
| Product Model | 900TCK-0001 |
| Manufacturer | Honeywell |
| Product Category | Analog Input Module (universal) |
| Compatible Systems | HC900 Hybrid Controller (C30, C50, C70, C300 processors) |
| Channel Count | 16 channels, independently configurable |
| Input Types | Thermocouple (J, K, T, E, R, S, B, N, C, L); RTD (Pt100, Ni); DC voltage (0-5V, 0-10V); DC current (4-20mA, 0-20mA) |
| Resolution | 16-bit (including sign) |
| Accuracy (25°C) | Current/Voltage: ±0.1% span; TC/RTD: ±0.2% span (typical, type-dependent) |
| Sampling Rate | 100 ms all channels (current/voltage); 300 ms (temperature) |
| Common Mode Rejection | ≥120 dB @ 50/60 Hz |
| Channel Isolation | Channel-to-channel and channel-to-logic ground |
| Input Impedance | ≥1 MΩ (voltage); 250Ω internal (current) |
| Cold Junction Compensation | Built-in, for thermocouple inputs |
| Operating Temperature | 0°C to +60°C |
| Connection | 2 × 20-pin pluggable screw terminal blocks (e.g., 900TCL-0001) |
| Power Consumption | 5V DC @ 300mA (typical, from rack backplane) |
Note: Parameter values vary across sources. The input range is described as -10V to +10V in some listings and 0-10V in others; the universal-input capability is consistent across technical descriptions. Verify the exact revision-specific specification before ordering.
Technical Principles and Innovative Values
Innovation Point 1 — Per-channel universal configuration. The 900TCK-0001 eliminates the traditional distinction between temperature-input and high-level-input cards. Each of its 16 channels is software-configurable for thermocouple, RTD, voltage, or current input without hardware changes. For systems with mixed signal types and moderate point counts, this reduces spare-part inventory from multiple card types to a single model.
Innovation Point 2 — Channel-to-channel isolation for fault containment. Every input channel on the 900TCK-0001 is galvanically isolated from its neighbors and from the logic ground. A short circuit or ground fault on one field loop cannot propagate to adjacent channels, preserving measurement integrity across the remaining loops. This isolation architecture is particularly valuable in temperature-monitoring applications where thermocouple sheaths can develop ground faults in corrosive or high-vibration environments.
Innovation Point 3 — Built-in cold junction compensation. Thermocouple inputs on the 900TCK-0001 do not require external CJC modules or compensating cables. The module’s internal cold junction sensor provides the reference temperature needed for accurate thermocouple readings, simplifying field wiring and reducing the number of potential failure points in temperature loops.
