1756-IR6I

Overview

• Model: 1756-IR6I

• Type: Analog RTD Module

Input Specifications

• Inputs: 6-Point Isolated RTD

• Compatible RTD Type:

• Platinum 100, 200, 500, 1000 Ω (alpha=385)

• Platinum 100, 200, 500, 1000 Ω (alpha=3916)

• Nickel 120 Ω (alpha=672)

• Nickel 100, 120, 200, 500 Ω (alpha=618)

Performance & Resolution

• Resolution: 16 bits

• 1…487 Ω: 7.7 mΩ/bit

• 2…1000 Ω: 15 mΩ/bit

• 4…2000 Ω: 30 mΩ/bit

• 8…4020 Ω: 60 mΩ/bit

• Input Range:

• 1…487 Ω

• 2…1000 Ω

• 4…2000 Ω

• 8…4000 Ω

• Module Scan Time:

• 25 ms min floating point (ohms)

• 50 ms min floating point (temperature)

• 10 ms min integer (ohms)

Electrical & Safety

• Maximum Input Current (Off-State): 2.75 milliamperes

• Data Format:

• Integer mode (left justified, 2s complement)

• IEEE 32-bit floating point

• Backplane Current (5V): 250 milliamps

• Backplane Current (24V): 125 milliamps

• Power Dissipation (Max): 4.3 Watts

• Removable Terminal Blocks: 1756-TBNH, 1756-TBSH

• Maximum Operating Current: 1.2 milliamperes at 30 Volts AC, 60 Hertz

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