Overview
The Allen-Bradley 1769-IT6 is a compact thermocouple/millivolt input module designed for CompactLogix and Compact GuardLogix controllers. This 6-channel thermocouple input module features isolated inputs and built-in cold junction compensation (CJC) to deliver accurate temperature measurements across a wide range of industrial applications. The sealed design protects against environmental contaminants while maintaining precise signal integrity for process control, thermal monitoring, and data acquisition systems.
Key Features
- 6 differential input channels for thermocouple and millivolt signals
- Supports B, C, E, J, K, N, R, S, and T type thermocouples
- 2 integrated cold junction compensation (CJC) sensors for accurate readings
- Isolated inputs prevent ground-loop errors and noise interference
- Millivolt input ranges: ±50 mV and ±100 mV selectable per channel
- Fast response time with Delta-Sigma converter topology
- Status LEDs for module diagnostics and fault detection
- Open-circuit detection with automatic indication
- Automatic calibration at power-up
Technical Specifications
- Input Channels: 6 thermocouple or millivolt inputs + 2 CJC sensors
- Thermocouple Types: B, C, E, J, K, N, R, S, T
- Millivolt Ranges: ±50 mV, ±100 mV (selectable per channel)
- Input Impedance: <10 MΩ
- Rated Working Voltage: 30 Volts AC / 30 Volts DC
- Bus Current Draw: 140 mA @ 5V DC; 30 mA @ 24V DC (max)
- Converter Type: Delta-Sigma
- Heat Dissipation: 1.5 Watts
- Common Mode Rejection: 115 dB
- Normal Mode Rejection Ratio: 85 dB @ 50–60 Hz
- Open-Circuit Detection Time: Typically 7 ms to 2.1 seconds
- Operating Voltage: 5 VDC or 24 VDC (from bus)
- Dimensions: 1.5″ W × 3.5″ D × 5.25″ H
- Weight: Approximately 400 grams
- Certifications: CE, UL 508, C-UL
- Series: CompactLogix Compact I/O
Typical Applications
- Industrial furnaces, kilns, and ovens requiring multi-point thermal monitoring
- Process control systems with precise temperature feedback
- Heat-treat equipment and thermal processing systems
- Machinery and OEM applications needing mV or temperature signal acquisition
- Data logging and environmental monitoring systems
- Food and beverage processing with distributed temperature sensing
Compatibility & Replacements
Compatible With
- CompactLogix 1769 controllers (1769-L16, 1769-L18, 1769-L24, 1769-L32)
- Compact GuardLogix controllers
- CompactLogix 5370 and 5380 systems
- MicroLogix 1500 controllers (with appropriate gateway)
- Compact I/O chassis configurations
- Studio 5000 Logix Designer environment
- EtherNet/IP protocol for CompactLogix networks
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 1769-IT6 is the primary CompactLogix 6-channel thermocouple module; confirm with Rockwell Automation if legacy models require migration support.
Works With
- Studio 5000 Logix Designer
- RSLogix 5000
- EtherNet/IP networks
- Compact I/O network communications
- FactoryTalk View (HMI integration)
- Third-party SCADA and monitoring platforms via EtherNet/IP gateway
