Allen-Bradley 1771-IR | RTD Input Module
Overview
The 1771-IR is a PLC-5 Resistance Temperature Detector (RTD) input module designed for precise temperature measurements. It features six input channels compatible with both Copper and Platinum RTD types.
Key Specifications
- Input Channels: Six (6) three-wire RTD inputs
- Data Format: Natural Binary, BDC actual temperature, or Ohm readings
-
Temperature Measurement Range:
- Platinum sensor: -200 to +870 °C
- Copper sensor: -200 to +260 °C
- Resolution: 1.0 °C / 1.0 °F per bit
Performance Metrics
- Scan Time: 50 ms for six channels
- AC Signal Delay (Off): 45 (+/- 15) ms
- DC Signal Delay (On): 10 ms
- DC Signal Delay (Off): 50 ms
- Voltage Range: 100 Ohms (platinum), 10 Ohms (other)
- Backplane Current: 800 mA
Physical Characteristics
- Mounting: Rack mountable
- Power Requirements: No external power needed
- Current Draw: 950 mA at 5VDC
- Power Dissipation: 4.75 Watts
- Thermal Dissipation: 16.2 BTU/hr
Compatibility and Installation
- Compatible Controllers: PLC2, PLC3, PLC5
- Chassis Compatibility: 1771-A1B, 1771-A2B, 1771-A3B, 1771-A4B
- Wiring Arm: 1771-WH
Unique Features
- Open Wire Detection: Capable of detecting open wire conditions.
- Life Expectancy: Up to 100 million operations.
- Indicator Lights: Bright status indicators on the front panel for troubleshooting.
Allen-Bradley 1771-IR | RTD Input Module
Allen-Bradley 1771-IR | RTD Input Module
Overview
The 1771-IR is a PLC-5 Resistance Temperature Detector (RTD) input module designed for precise temperature measurements. It features six input channels compatible with both Copper and Platinum RTD types.
Key Specifications
- Input Channels: Six (6) three-wire RTD inputs
- Data Format: Natural Binary, BDC actual temperature, or Ohm readings
-
Temperature Measurement Range:
- Platinum sensor: -200 to +870 °C
- Copper sensor: -200 to +260 °C
- Resolution: 1.0 °C / 1.0 °F per bit
Performance Metrics
- Scan Time: 50 ms for six channels
- AC Signal Delay (Off): 45 (+/- 15) ms
- DC Signal Delay (On): 10 ms
- DC Signal Delay (Off): 50 ms
- Voltage Range: 100 Ohms (platinum), 10 Ohms (other)
- Backplane Current: 800 mA
Physical Characteristics
- Mounting: Rack mountable
- Power Requirements: No external power needed
- Current Draw: 950 mA at 5VDC
- Power Dissipation: 4.75 Watts
- Thermal Dissipation: 16.2 BTU/hr
Compatibility and Installation
- Compatible Controllers: PLC2, PLC3, PLC5
- Chassis Compatibility: 1771-A1B, 1771-A2B, 1771-A3B, 1771-A4B
- Wiring Arm: 1771-WH
Unique Features
- Open Wire Detection: Capable of detecting open wire conditions.
- Life Expectancy: Up to 100 million operations.
- Indicator Lights: Bright status indicators on the front panel for troubleshooting.