Process & Voltage Monitoring Solution — Allen-Bradley 1746-NI16V | SLC 500 Series
Where This Product Is Used
The Allen-Bradley 1746-NI16V is a 16-channel, high-resolution analog voltage input module engineered for demanding industrial environments where precise signal acquisition is non-negotiable. It is widely deployed across the following application domains:
- Process Manufacturing: Continuous monitoring of voltage signals from transmitters in chemical dosing, blending, and reactor control loops.
- Energy & Power Management: Real-time acquisition of voltage feedback from power conditioning equipment, UPS systems, and energy meters integrated into SLC 500 control architectures.
- Water & Wastewater Treatment: Multi-channel voltage input from level sensors, flow transmitters, and analytical instruments across pump stations and treatment cells.
- HVAC & Building Automation: Centralized voltage signal collection from VAV controllers, pressure transducers, and temperature transmitters in large-scale building management systems.
- Automotive & Assembly Lines: Precision voltage feedback from servo drives, torque sensors, and vision system outputs in high-throughput production environments.
- Oil & Gas Upstream/Midstream: Acquisition of voltage signals from wellhead instrumentation, pipeline pressure transmitters, and flow computers via SLC 500 remote I/O racks.
- Food & Beverage Processing: Hygienic-zone voltage monitoring for fill-level, weight, and temperature control in compliance with FDA/HACCP process requirements.
Technical Specifications
| Catalog Number | 1746-NI16V |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Series | SLC 500 |
| Module Type | Analog Input — Voltage |
| Number of Input Channels | 16 Single-Ended / 8 Differential |
| Input Voltage Ranges | ±10 V DC, 0–5 V DC, 0–10 V DC, 1–5 V DC |
| Resolution | 16-bit (1 sign bit + 15 data bits) |
| Data Format | Two’s complement integer |
| Input Impedance | ≥ 10 MΩ |
| Conversion Rate | ~6.8 ms per channel (all 16 channels) |
| Isolation | 500 V AC channel-to-backplane |
| Backplane Current Draw | 150 mA @ 5 V DC; 75 mA @ 24 V DC |
| Operating Temperature | 0 °C to +60 °C (32 °F to 140 °F) |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95% non-condensing |
| Enclosure Rating | Open-style (panel/rack mount) |
| Module Slot Width | Single-slot SLC 500 I/O chassis |
| Weight | Approx. 400 g |
| Certifications | UL, CSA, CE, C-Tick |
Why Engineers Specify This Model
- True 16-bit Resolution: Delivers ±0.003% full-scale accuracy, enabling fine-grained process control that 12-bit or 13-bit alternatives cannot match.
- 16 Channels in a Single Slot: Maximizes chassis density — critical in retrofit projects where rack space is constrained and adding a second chassis is cost-prohibitive.
- Universal Voltage Range Selection: Per-channel software-configurable input ranges eliminate the need for external signal conditioners in mixed-signal installations.
- High Input Impedance: ≥10 MΩ ensures negligible loading on high-impedance transmitters and sensors, preserving signal integrity across long cable runs.
- Proven SLC 500 Ecosystem Compatibility: Drop-in compatible with all SLC 500 fixed and modular chassis (1746-A4 through 1746-A13) and fully supported by RSLogix 500 / Studio 5000 Logix Designer.
- Deterministic Scan Time: Fixed ~6.8 ms total conversion cycle supports time-critical closed-loop control applications.
- Long-Term Availability: Konmask maintains verified surplus and refurbished stock to support legacy SLC 500 installations beyond Rockwell’s standard product lifecycle.
Complete System Bill of Materials
A typical SLC 500 analog voltage acquisition system built around the 1746-NI16V includes the following components:
- 1746-NI16V — 16-channel analog voltage input module (this item)
- 1746-A4 / A7 / A10 / A13 — SLC 500 I/O chassis (4, 7, 10, or 13 slots)
- 1747-L532 / L542 / L553 — SLC 5/03, 5/04, or 5/05 processor module
- 1746-P1 / P2 / P4 — SLC 500 power supply (1 A, 2 A, or 4 A)
- 1492-CABLE016X — Pre-wired analog cable assembly for 1746-NI16V wiring harness
- 1746-NO4V / NO4I — Analog output modules (voltage or current) for closed-loop control
- 1747-SDN — DeviceNet scanner (if field device integration is required)
- 1747-SCNR — Remote I/O scanner for distributed rack configurations
Compliance & Industry Standards
- UL Listed — UL 508 (Industrial Control Equipment)
- CSA Certified — C22.2 No. 142 (Process Control Equipment)
- CE Marked — EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU
- C-Tick / RCM — Australian Communications and Media Authority compliance
- RoHS Compliant — Directive 2011/65/EU (Restriction of Hazardous Substances)
- IEC 61131-2 — Programmable controllers: equipment requirements and tests
- ATEX / IECEx — Not rated for intrinsically safe or hazardous area use in standard configuration; consult Konmask for barrier/isolator pairing recommendations.
Quality Assurance & Sourcing
Konmask applies a multi-stage inspection protocol to every 1746-NI16V unit prior to shipment:
- Visual Inspection: PCB, connector pins, housing, and label integrity checked against OEM reference standards.
- Functional Bench Test: Each channel verified for correct voltage range response, resolution, and backplane communication using calibrated test equipment.
- Firmware / Revision Verification: Module series letter and firmware revision documented and disclosed in the shipment record.
- ESD-Safe Packaging: Anti-static bag, foam insert, and double-wall carton for transit protection.
- Traceability: Each unit ships with a Konmask inspection certificate and unique shipment reference number for after-sales support.
Units are sourced from decommissioned OEM production lines, authorized distributor surplus, and verified industrial resellers. Konmask does not sell counterfeit, remarked, or untested components.
How to Source This Part
- Add to Cart — Click the purchase button on this page to place an order directly.
- Request a Quote — For volume orders (5+ units), OEM replacement programs, or project-based procurement, email support@konmask.com with your quantity and required delivery date.
- Urgent / Emergency Orders — Call or WhatsApp +0086 19859288691 for same-day quotation and expedited shipping options.
- Lead Time — In-stock units typically ship within 1–3 business days. Cross-border orders to Southeast Asia, Europe, and the Americas are supported with DHL / FedEx / UPS express options.
- Payment — T/T (wire transfer), PayPal, and major credit cards accepted. LC at sight available for orders above USD 5,000.
Application-Specific FAQ
Q: Can the 1746-NI16V accept 4–20 mA current signals?
A: No. The 1746-NI16V is a voltage-only input module. For current (4–20 mA) inputs, specify the 1746-NI16I (current input variant) or use an external V/I converter.
Q: Is this module compatible with SLC 5/01 and 5/02 processors?
A: Yes, the 1746-NI16V is compatible with all SLC 500 processors (5/01 through 5/05) and all standard SLC 500 I/O chassis. No special firmware is required.
Q: How do I configure the input range per channel?
A: Input range is configured via the I/O Configuration dialog in RSLogix 500. Each channel can be independently set to ±10 V, 0–10 V, 0–5 V, or 1–5 V without hardware jumpers.
Q: What is the maximum cable length for analog inputs?
A: Rockwell recommends shielded twisted-pair cable up to 30 m (100 ft) for optimal noise immunity. Longer runs are possible with proper shielding, grounding, and signal isolation barriers.
Q: Can Konmask supply the matching wiring harness / cable assembly?
A: Yes. The 1492-CABLE016X pre-wired cable assembly is available. Contact us to confirm the correct cable revision for your chassis configuration.
Q: Do you provide a warranty?
A: All units sold by Konmask carry a 90-day functional warranty covering defects identified under normal operating conditions. Extended warranty and exchange programs are available — contact us for details.
Q: Is this product available for export to my country?
A: Konmask ships globally. Export compliance (EAR/ECCN classification) is assessed per order. Contact us with your destination country and end-use details for export documentation support.
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Contact: support@konmask.com | +0086 19859288691
