The 1769-IT6 is a 6-channel thermocouple/millivolt input module for Allen-Bradley CompactLogix and MicroLogix 1500 systems. It provides high-precision temperature measurement with integrated Cold Junction Compensation (CJC), onboard filtering, and lead-wire compensation. Ideal for plastic injection molding, furnace control, and chemical processing, it supports multiple thermocouple types simultaneously while maintaining stability across industrial temperature fluctuations.
| Item | Specification |
|---|---|
| Catalog Number | 1769-IT6 |
| Inputs | 6 Thermocouple or Millivolt channels |
| Supported Thermocouples | J, K, T, E, R, S, B, N, C |
| Millivolt Input Range | ±50 mV, ±100 mV |
| Resolution | 14-bit (or 16-bit depending on configuration) |
| Backplane Current | 100 mA @ 5.1 V DC, 45 mA @ 24 V DC |
| ADC Type | Sigma-Delta |
| Input Impedance | >10 MΩ |
| Common Mode Rejection | >115 dB @ 50/60 Hz |
| Normal Mode Rejection | >85 dB @ 50/60 Hz |
| Cold Junction Compensation | Integrated thermistors |
| Open-Circuit Detection | Upscale or Downscale, user-configurable |
| Isolation Voltage | 30 V AC/DC continuous; tested 500 V DC / 1 s |
| Power Supply Distance Rating | 8 modules (within 8 slots of power supply) |
| Operating Temperature | 0–60 °C |
Per-channel configuration allows different thermocouple types on a single module
Open-circuit detection triggers Upscale or Downscale reporting
No external power required for thermocouples; draws power from backplane
For 3-wire RTDs, use the 1769-IR6 module instead
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