1756-IR6I Allen-Bradley

Series#: AllenBradley

Product Details

1756-IR6I ALLEN-BRADLEY ControlLogix 6-Channel Isolated RTD/Resistance Input Module – Precision temperature measurement for industrial automation.
Accepts 2-, 3-, or 4-wire RTDs (Pt100, Pt1000, Ni120, Cu10) and resistance inputs up to 4000 ohms, with high accuracy and noise immunity.
Channel-to-channel isolation (30V continuous) protects against ground loops and electrical interference, ensuring reliable data in harsh environments.
Hot-swappable under power with ControlLogix backplane support, simplifying maintenance without system downtime.
Configurable via RSLogix 5000/Studio 5000 with built-in linearization and scaling for direct engineering unit readings.
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Specification

The ALLEN-BRADLEY 1756-IR6I is a high-density, isolated RTD/resistance input module designed for the ControlLogix platform. It provides six individually isolated channels, each capable of measuring a wide range of RTD types (including Pt100, Pt1000, Ni120, and Cu10) as well as resistance values from 0 to 4000 ohms. With 16-bit resolution and per-channel configuration for excitation current, lead-wire compensation, and filtering, the 1756-IR6I delivers precise, stable readings even in electrically noisy industrial environments. Its galvanic isolation (30V continuous, 150V transient) ensures signal integrity and protects sensitive control circuits from ground potential differences. The module supports hot-swapping and auto-calibration, making it an ideal choice for critical temperature monitoring in process, oil & gas, and power generation applications.

Parameter	Specification
Product Series	ControlLogix
Module Type	Isolated RTD/Resistance Input
Number of Channels	6 (individually isolated)
Input Types Supported	2-wire, 3-wire, 4-wire RTD (Pt100, Pt1000, Ni120, Cu10, etc.); Resistance (0-4000 ohms)
Resolution	16 bits
Accuracy (RTD)	±0.1% of full scale typical (Pt100, 0-100°C)
Isolation Voltage	30V continuous, 150V transient (channel-to-channel and channel-to-backplane)
Excitation Current	Selectable: 200 µA, 1 mA, or 2 mA per channel
Lead-Wire Compensation	Automatic for 3-wire and 4-wire RTDs
Update Rate	50 ms per channel (typical at 60 Hz filter)
Backplane Current (5V)	750 mA
Backplane Current (24V)	0 mA (module powered by 5V backplane)
Power Dissipation	3.75 W (typical)
Operating Temperature	0°C to 60°C (32°F to 140°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Relative Humidity	5% to 95% non-condensing
Enclosure Type	Open-style (requires panel or cabinet)
Indicators	Green/Red status LED per channel, Module OK LED
Configuration Software	RSLogix 5000 / Studio 5000 (v20 or later)
Wiring	Removable terminal block (1756-TBCH or 1756-TBS6H)
Approvals	UL, CSA, CE, ATEX (Zone 2), IECEx
Weight	Approx. 0.34 kg (0.75 lb)