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1771-NOC | Allen-Bradley PLC-5 8P Analog Current Output Module, High Resolution
- Regular price
- $617.00
- Sale price
- $617.00
- Regular price
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Product Description P/N: 1771-NOC
Description
The Allen-Bradley 1771-NOC is an N-Series analog output module for PLC-5 systems, providing eight isolated current output channels. It supports a 0–25 mA output range with high-resolution performance for precise analog control. The module operates using BCD or natural binary data formats and requires an external wiring arm and RTP assembly for field connections.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLC I/O Module |
| Part Number | 1771-NOC |
| Subcategory | Analog Output Module |
| Module Type | N-Series Analog I/O |
| Number of Inputs | 0 |
| Number of Outputs | 8 current outputs |
| Output Range | 0–25 mA |
| Output Resolution | 3.20 µA/bit (approx. 14-bit) |
| Output Impedance | >1 MΩ |
| Output Overvoltage Protection | 140 VAC RMS continuous |
| Backplane Current | 2.9 A at 20 mA/output; 3.3 A at 25 mA/output |
| Power Dissipation | 5.5 W at 5 VDC |
| Data Format | BCD or natural binary |
| Update Time | 25 ms maximum |
| Offset Drift | ±1 µA/°C |
| Gain Drift | ±50 ppm/°C |
| RTP Compatibility | 1771-RTP3 (fused) / 1771-RTP4 (unfused) |
| Wiring Arm | 1771-WH |
| Operating Temperature | 0–60 °C |
| Storage Temperature | −40–85 °C |
| Humidity | 5–95% non-condensing |
| Model Status | Earlier model |
Information About 1771-NOC
The 1771-NOC is part of Allen-Bradley’s high-resolution isolated analog module family, designed for applications requiring accurate current-based control. Its construction includes isolated outputs with programmable reset values and compatibility with both fused and unfused RTBs for flexible installation. The module integrates into PLC-5 chassis backplanes, using standardized data formats and supporting tight process control through 14-bit output resolution. Typical usage includes proportional control, analog valve operation, and current-loop instrumentation in high-precision industrial processes.
Key Features:
- Eight analog current outputs: Provides 0–25 mA signals for control devices.
- High-resolution output: 14-bit resolution enables fine process adjustment.
- Selectable data formats: Supports BCD or natural binary representations.
- Programmable reset values: Each channel configurable for safe shutdown conditions.
- Compatible RTBs: Works with 1771-RTP3 (fused) or 1771-RTP4 (unfused).
- Isolated outputs: Reduces noise and improves measurement integrity.
- Wide environmental range: Operates from 0–60 °C with standard industrial humidity tolerance.
- Integrated protection: Output overvoltage protection up to 140 VAC RMS continuous.
The 1771-NOC delivers the reliability and precision required for accurate current-loop control in PLC-5 automation systems.
Description
The Allen-Bradley 1771-NOC is an N-Series analog output module for PLC-5 systems, providing eight isolated current output channels. It supports a 0–25 mA output range with high-resolution performance for precise analog control. The module operates using BCD or natural binary data formats and requires an external wiring arm and RTP assembly for field connections.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLC I/O Module |
| Part Number | 1771-NOC |
| Subcategory | Analog Output Module |
| Module Type | N-Series Analog I/O |
| Number of Inputs | 0 |
| Number of Outputs | 8 current outputs |
| Output Range | 0–25 mA |
| Output Resolution | 3.20 µA/bit (approx. 14-bit) |
| Output Impedance | >1 MΩ |
| Output Overvoltage Protection | 140 VAC RMS continuous |
| Backplane Current | 2.9 A at 20 mA/output; 3.3 A at 25 mA/output |
| Power Dissipation | 5.5 W at 5 VDC |
| Data Format | BCD or natural binary |
| Update Time | 25 ms maximum |
| Offset Drift | ±1 µA/°C |
| Gain Drift | ±50 ppm/°C |
| RTP Compatibility | 1771-RTP3 (fused) / 1771-RTP4 (unfused) |
| Wiring Arm | 1771-WH |
| Operating Temperature | 0–60 °C |
| Storage Temperature | −40–85 °C |
| Humidity | 5–95% non-condensing |
| Model Status | Earlier model |
Information About 1771-NOC
The 1771-NOC is part of Allen-Bradley’s high-resolution isolated analog module family, designed for applications requiring accurate current-based control. Its construction includes isolated outputs with programmable reset values and compatibility with both fused and unfused RTBs for flexible installation. The module integrates into PLC-5 chassis backplanes, using standardized data formats and supporting tight process control through 14-bit output resolution. Typical usage includes proportional control, analog valve operation, and current-loop instrumentation in high-precision industrial processes.
Key Features:
- Eight analog current outputs: Provides 0–25 mA signals for control devices.
- High-resolution output: 14-bit resolution enables fine process adjustment.
- Selectable data formats: Supports BCD or natural binary representations.
- Programmable reset values: Each channel configurable for safe shutdown conditions.
- Compatible RTBs: Works with 1771-RTP3 (fused) or 1771-RTP4 (unfused).
- Isolated outputs: Reduces noise and improves measurement integrity.
- Wide environmental range: Operates from 0–60 °C with standard industrial humidity tolerance.
- Integrated protection: Output overvoltage protection up to 140 VAC RMS continuous.
The 1771-NOC delivers the reliability and precision required for accurate current-loop control in PLC-5 automation systems.