1771-NOC Allen-Bradley N-series High Resolution Analog Output Module

Product parameters

Module type: High-resolution isolated analog output module

Number of output channels: 8 current output channels

Output signal type: Current output, range 0 to 25 mA (commonly 4 to 20 mA)

Output resolution: 13 bits (unipolar, 3.2 µA/ bit)

Data format: Supports BDC (Complement of Binary) or Natural Binary

Output impedance: >1 MΩ

Maximum driving capacity:

When the voltage is 0 to 20 mA, the load resistance is 0 to 1000 Ω

When it is 0 to 25 mA, the load resistance is 0 to 700 Ω

Channel isolation

Inter-channel isolation: 1000 VDC (continuous)

Output to backplane isolation: 1000 VDC (continuous)

Backplane current

2.9A (5 VDC, 20 mA/ output)

3.3A (5 VDC, 25 mA/ output)

Power consumption: Maximum 16.5W

Heat dissipation: Maximum 56.3 BTU/ hour

Conversion time: 1.5 ms per channel (typical value, approximately 12 ms for 8-channel scanning)

Operating temperature: 0 to 60°C (32 to 140°F)

Storage temperature: -40 to 85°C (-40 to 185°F)

Relative humidity: 5% to 95% (no condensation)

Installation location:

Compatible with I/O racks such as 1771-A1B, A2B, A3B, A4B, etc

Occupy one slot

Wiring: Connect using a remote terminal panel (RTP), and a 6-foot or 15-foot cable (such as 1771-CAPR or 1771-CAP15) is required.

Recommended wire specification: 14-22 AWG stranded or solid copper wire, with a maximum insulation thickness of 3/64 inches

Key control: The backplane connector is key controlled between pins 2-4 and 20-22

Certification: Complies with UL, CSA, CE and other standards (Specific certifications may vary by supplier)

Status indication: Green RUN indicator light (normal operation), red FLT indicator light (fault status)

Function

High-precision current output

It provides 8 current output channels (0 to 25 mA, commonly 4 to 20 mA), with A 13-bit resolution (3.2 µA per bit) to ensure precise control.

Supports BDC or natural binary data format, adapting to different PLC programming requirements.

Channel isolation: Provide 1000 VDC isolation between channels and output to the backplane to prevent signal interference and ground loops, and enhance system reliability.

Fast response: The conversion time per channel is approximately 1.5 ms, and the complete scan of 8 channels is about 12 ms, making it suitable for real-time control applications.

Remote Terminal panel (RTP) support: Connect RTP (such as 1771-RTP4) via 6-foot or 15-foot cables, simplifying wiring and supporting remote installation, reducing wiring complexity.

Modular design

It occupies one I/O rack slot and is compatible with PLC-5 processors (such as 1785-L80C) and power modules (such as 1771-P5).

Communicate with the PLC processor using block Transfer instructions (BTR/BTW) to transmit output data and module status.

Diagnostic function:

It is equipped with an internal self-diagnostic function. When powered on, it detects the module status. The red FLT indicator light indicates faults (such as output overload or configuration errors).

Support status monitoring, report the effectiveness of the output channel, and facilitate troubleshooting.

Configuration flexibility:

Configure the output range (4-20 mA or 0-25 mA) and data format through RSLogix 5 or Studio 5000 Logix Designer.

Supports user-defined range scaling to adapt to different actuators or devices.

Application scenarios

Process control: In the chemical, oil and gas, or pharmaceutical industries, it controls valves, frequency converters, or actuators (such as 4-20 mA signal-driven control valves) to achieve flow, pressure, or liquid level control.

Manufacturing industry: In automotive manufacturing, food processing or electronic assembly production lines, drive simulation equipment (such as motor speed controllers, heating elements) to support precise process regulation.

Energy management: In power distribution or renewable energy systems, control load regulators or converters to ensure the stable operation of the system.

Environmental control: In HVAC or environmental monitoring systems, output 4-20 mA signals to control dampers, pumps or heaters to maintain environmental conditions.

Mechanical automation: In packaging machinery or material handling systems, drive analog actuators (such as servo valves, proportional valves) to achieve precise motion control.

Legacy system maintenance: Used for maintaining or upgrading old systems based on PLC-5 (such as when used in conjunction with 1785-L80C, 1771-P5, etc.), to extend the lifespan of equipment or prepare for migration to modern platforms (such as ControlLogix).

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

Many Available just wait for you, feel free to ask to get better deal!!!

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