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The 1746-NO4I analog output module contains 4 outputs (0...20mA). The backplane current load of 1746NO4I is 55mA at 5V DC or 195mA at 24V DC. This analog output module has a resolution (bits), max. of 14 bits and a step response at 95% of 2.5 ms.
2.5 ms typical output step response (5–95%)
Supports load resistance up to 500 Ω
14-bit digital-to-analog converter with R-2R ladder conversion
The 1746-NO4I module utilizes an R-2R ladder network for 14-bit digital-to-analog conversion, with a step response time of 2.5 ms. Each channel supports a 0 to 20 mA current output (including 5% over-range) and a maximum load of 500 Ω. As part of the Allen-Bradley SLC 500 series, this module features isolation and diagnostic feedback for regulating industrial equipment in process control and manufacturing systems.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen Bradley 1746-NO4I Analog Output Module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
HVAC and Refrigeration
Outputs current signals to VFDs to adjust the speed of compressors and cooling tower fans in large chillers.
Oil and Gas
Connects to pneumatic long-stroke valve positioners to control flow control valves and pressure reducing valves on pipelines.
Chemical Processing
Controls the opening of batch reactor feed valves to maintain strict material ratios and reaction flow rates.
Power Generation and Energy
Controls boiler feedwater regulating valves, desuperheating systems, and electrical actuators for forced and induced draft fans.
Metals and Metallurgy
Adjusts pneumatic proportional valves on heating furnaces to control the gas-air mixing ratio for steel billet heating.
Pulp and Paper Industry
Controls the opening of steam valves in the drying section or provides regulation signals for headbox pressure control valves.
First, external power required—current loops need an external 24V DC supply. Second, prevent ground loops—4 channels share a common ground, so use isolators or single-ended grounding for multi-location devices. Third, no hot-swapping—turn off chassis power before removal to prevent backplane damage.
Technical notes
Technical notes
Since the 4 channels of the 1746-NO4I analog output module share a single internal analog common, you must be highly vigilant and implement proper measures when connecting multiple field devices across different locations to avoid "ground loop interference" caused by potential differences between the equipment.
It is a 4-channel analog current output module for the Allen-Bradley SLC 500 series.
How to use the 1746-NO4I?
Insert it into the SLC 500 chassis, connect actuators (like valves), and configure channels in the programming software.
What is the output signal type of the 1746-NO4I?
It only supports current signals of 0 to 20 mA or 4 to 20 mA.
How many output channels does the 1746-NO4I have?
It has 4 independently controlled analog output channels.
Do you offer global delivery services?
Yes. We ship globally, and we are able to quickly deliver parts globally to any corner of the world. Unless otherwise specified, we will ship your order via (DHL). We can also ship through FedEx, UPS, and TNT. We can also use your account.
How do I submit a part enquiry?
Our Product Pages – Simply search for the part number you require in our search bar, and it will take you straight to the product page. You can then email or call us – Speak directly to a dedicated Account Manager, who will be able to answer any questions you have and provide you with a quotation within minutes.
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