Allen-Bradley 1771-NIS/B, Series B, Rev B | PLC 5 Input Module
Overview
The 1771-NIS/B is a high-resolution analog input module from Allen-Bradley’s PLC5 series. It offers 8 current input channels, supporting a 4-20 mA range, and can supply loop power for connected devices such as 2-wire transmitters.
Key Specifications
- Inputs: 8 Current inputs
- Input Range: 4-20 mA (0.34 µA/bit)
- Resolution: 330 nA/bit (16-bit unipolar)
- Loop Power: 20-30V DC (for 0-20 mA range)
- Backplane Current: 2.9 A
- Power Dissipation: 12 W
- Data Format: BDC or Natural Binary
- Detection Time: 5 seconds for open circuit
- Overvoltage Protection: 24V DC
Performance Details
- Input Impedance: Max 300 Ω
-
Signal Delay:
- AC: 45 ms (+/- 15)
- DC: 50 ms
- Input Calibration: 1 mA / 21 mA
- Update Time: Max 25 seconds
- Bandwidth: 9 Hz
- Common Mode Rejection: 150 dB
- Normal Mode Rejection: 50-60 dB
- Offset Drift: ±200 nA/°C
- Gain Drift: ±95 ppm/°C
Installation & Compatibility
- Mounting: Rack Mountable
- Recommended RTP: 1771-RTP4
- Chassis Compatibility: PLC-5/250, PLC-3, PLC-5 controllers
Environmental Conditions
- Operating Temperature: 0°C to 60°C
- Humidity: 5% to 95% (non-condensing)
Additional Features
- Loop Power Supply: Yes
- Open Circuit Detection: 5 seconds
- Overvoltage Protection: 24V DC
- System Compatibility: Compatible with various PLC5 chassis
Allen-Bradley 1771-NIS/B, Series B, Rev B | PLC 5 Input Module
Allen-Bradley 1771-NIS/B, Series B, Rev B | PLC 5 Input Module
Overview
The 1771-NIS/B is a high-resolution analog input module from Allen-Bradley’s PLC5 series. It offers 8 current input channels, supporting a 4-20 mA range, and can supply loop power for connected devices such as 2-wire transmitters.
Key Specifications
- Inputs: 8 Current inputs
- Input Range: 4-20 mA (0.34 µA/bit)
- Resolution: 330 nA/bit (16-bit unipolar)
- Loop Power: 20-30V DC (for 0-20 mA range)
- Backplane Current: 2.9 A
- Power Dissipation: 12 W
- Data Format: BDC or Natural Binary
- Detection Time: 5 seconds for open circuit
- Overvoltage Protection: 24V DC
Performance Details
- Input Impedance: Max 300 Ω
-
Signal Delay:
- AC: 45 ms (+/- 15)
- DC: 50 ms
- Input Calibration: 1 mA / 21 mA
- Update Time: Max 25 seconds
- Bandwidth: 9 Hz
- Common Mode Rejection: 150 dB
- Normal Mode Rejection: 50-60 dB
- Offset Drift: ±200 nA/°C
- Gain Drift: ±95 ppm/°C
Installation & Compatibility
- Mounting: Rack Mountable
- Recommended RTP: 1771-RTP4
- Chassis Compatibility: PLC-5/250, PLC-3, PLC-5 controllers
Environmental Conditions
- Operating Temperature: 0°C to 60°C
- Humidity: 5% to 95% (non-condensing)
Additional Features
- Loop Power Supply: Yes
- Open Circuit Detection: 5 seconds
- Overvoltage Protection: 24V DC
- System Compatibility: Compatible with various PLC5 chassis