6-Channel Isolated Temperature Input Module | Allen-Bradley 1769sc-IT6I
Manufacturer: Allen Bradley
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Part Number: 1769sc-IT6I
Condition：New with Original Package
Product Type: Analog Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1769sc-IT6I Compact I/O Isolated Thermocouple/Millivolt Module
The Allen-Bradley 1769sc-IT6I, also cataloged as the 1769sc-IT6I Isolated Thermal Input Module, operates as a dedicated hardware component for converting low-voltage sensor signals into digitized register values within CompactLogix systems. The hardware accepts independent sensor connections directly to its terminal assembly, processing multiple thermocouple types and millivolt potentials through isolated analog-to-digital measurement circuits.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769sc-IT6I |
| Brand | Allen-Bradley |
| Origin | United States (Rockwell Automation Encompass Partner Product) |
| Weight | 2.00 lbs (0.91 kg) |
| Dimensions | 118 x 87 x 35 mm |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 150 mA at 5 VDC, 35 mA at 24 VDC backplane current draw |
| Channels | 6 individually isolated inputs |
| Input Types | Thermocouple (J, K, T, E, R, B, S, N, C, L); Millivolt (plus or minus 50 mV, plus or minus 100 mV) |
| Resolution | 16-bit analog-to-digital conversion |
| Isolation Rating | 125 VAC continuous channel-to-channel, field-to-backplane, and field-to-chassis |
| Input Impedance | Greater than 1 Mohm |
| Input Overvoltage Protection | Plus or minus 35 VDC continuous |
| Thermal Dissipation | 3.0 Watts maximum |
| Selectable Filters | 4.17 Hz, 10 Hz, 16.7 Hz, 19.6 Hz, 62 Hz, 470 Hz |
Profinet / EtherNet/IP Deterministic Networks and I/O Density Scaling
The 16-bit analog expansion interface transfers digitized thermal records to the local chassis master via the bus backplane connector to uphold system backplane bus communication velocity during operational cycles. When evaluating overall system layout and I/O density scaling limits, designers must calculation-check the 150 mA current load against the capacity of the local bank power supply module. Integrating these temperature points into automated architectures running Profinet / EtherNet/IP deterministic networks requires strict adherence to firmware flash compatibility criteria, ensuring that multi-channel data blocks and alarm status registers populate the communication tables without generating transmission delays or cycle timeout faults.
Frequently Asked Questions
Q: Does the 1769sc-IT6I module support hot-swapping or replacement while the rack power is active?
A: No. The module does not support hot-swapping. Disconnect all primary power infrastructure supplying the chassis assembly before attempting insertion or removal of the module to prevent electrical damage to the backplane transceiver logic.
Q: How does the module maintain measurement accuracy when field ambient temperatures shift?
A: The module incorporates internal automatic cold junction compensation (CJC) circuitry. This hardware track continuously monitors environmental changes at the module terminal block to correct for parasitic thermocouple junctions formed at the wire landing points.
Field Installation Guidelines
- Bus Connection Seating and Locking: Guide the module along the side tongue-and-groove alignment tracks of the adjacent 1769 assembly. Press the component firmly onto the DIN rail track and actuate both the upper and lower locking levers completely forward to lock the multi-pin backplane data bus connectors into position.
- Shield Terminal Grounding and Cable Layout: Land field connections using shielded, twisted-pair thermocouple extension wires matching the sensor type, or use Belden 8761 equivalent cables for raw millivolt loops. Ground the cable shield drain wires solely at the designated chassis ground terminal to mitigate industrial electromagnetic field interference.
- Signal Separation and Conduit Routing: Keep all analog thermocouple input leads isolated from high-voltage AC conductors, motor cables, and variable frequency drive outputs. Route signal lines through distinct, grounded steel conduits to prevent common-mode electrical noise from corrupting the 16-bit analog conversion values.