The Allen-Bradley 1746sc-NO8i is a high-density analog output module, engineered by Spectrum Controls for seamless integration with the Allen-Bradley SLC 500 programmable controller platform. This module features eight isolated current output channels within a single-slot form factor, providing an efficient solution for high-channel-count applications without increasing chassis footprint.
Features
High-Density Design: Provides 8 independent output channels in a single-slot module.
High-Precision Control: Features 16-bit resolution for fine-tuned signal output and process stability.
Signal Versatility: Supports standard industrial current ranges, including 0–20 mA and 4–20 mA.
Compatibility: Designed specifically for the SLC 500 system architecture, ensuring reliable communication and power distribution.
Applications
The 1746sc-NO8i is suitable for demanding industrial control environments, including the operation of modulating control valves, Variable Frequency Drives (VFDs), and precision actuators. It is also frequently utilized for signal retransmission to remote data loggers, recorders, and secondary control systems.
Technical Specifications
Manufacturer
Spectrum Controls
Product Line
SLC 500
Module Type
Analog Current Output
Number of Outputs
8 Channels
Resolution
16-bit
Output Signals
0–20 mA, 4–20 mA
Backplane Current (5V DC)
120 mA
Backplane Current (24V DC)
240 mA
Operating Temperature
0 to 60 degC
Storage Temperature
-40 to 85 degC
Installation Guidelines
Safety First: Always disconnect power from the SLC 500 chassis before inserting or removing the module.
Mounting: Ensure the module is fully seated in the chassis slot and secured with the top and bottom retaining screws to maintain proper electrical contact and mechanical stability.
Wiring: Use shielded twisted-pair cabling for analog signals to minimize interference. Terminate wires using a maximum 14 AWG size.
Torque Requirements: Tighten terminal screws to a specification of 7–9 lb-in to ensure secure connections without damaging the terminal block.
Environment: Maintain adequate ventilation within the enclosure to ensure the ambient temperature remains within the 0 to 60 degC operating range.
FAQ
Is this module compatible with standard SLC 500 chassis? Yes, the 1746sc-NO8i is designed for direct insertion into standard SLC 500 I/O chassis.
Does this module require external power? The module draws its power from the SLC 500 backplane (5V DC and 24V DC). Refer to the technical specifications for current draw requirements.
