ALLEN BRADLEY Analog Slot Rack Module 1746-P2 1746-0A16/1746-IB16/1747-L532 SLC500 I/o

( Brand: Allen Bradley ), ( Manufacturer Part Number: 1746-0A16/1746-IB16/1747-L532 ), ( Model: 1746-P2/1746-N2 ), ( Part Type: Rack Module )

Review ALLEN BRADLEY 1746-0a16/1746-ib16/1747-l532 Analog I/o Slot Rack Module Assembly Read

The **Allen-Bradley 1746-0A16/1746-IB16/1747-L532/1746-P2 SLC500 Analog Input/Output Slot Rack Module** is a high-performance, modular component designed to expand the functionality of the **SLC 500 Programmable Logic Controller (PLC) series**, enabling seamless integration of analog signals within industrial automation systems. This versatile rack module is engineered to provide precise control and monitoring of analog inputs and outputs, making it an essential component for applications requiring real-time data acquisition, process regulation, and machine automation. The **1746-0A16** serves as the primary analog input module, accommodating up to **16 channels of 4-20 mA or 0-10 VDC signals**, while the **1746-IB16** offers **16 channels of isolated binary (digital) inputs**, ensuring robust signal conditioning and protection against noise and voltage spikes. Together, these modules work in tandem with the **1747-L532**, a high-speed counter module, and the **1746-P2**, a power supply module, to form a cohesive control architecture within the SLC 500 s **1746-RACK** or **1746-AIB** baseplate configurations.

The **1746-0A16 analog input module** is specifically designed to interface with a wide range of analog sensors, including temperature transmitters, pressure gauges, flow meters, and level sensors, delivering accurate and stable readings critical for process control applications. Each channel features **16-bit resolution**, ensuring fine granularity in signal measurement, while the module s **isolated design** enhances safety by preventing ground loops and electromagnetic interference (EMI) from corrupting sensitive signals. The **1746-IB16 isolated binary input module** complements this by providing **24 VDC-powered, optically isolated inputs**, ideal for discrete signals such as limit switches, proximity sensors, and emergency stop devices, all of which contribute to a more reliable and fault-tolerant control system.

The **1747-L532 high-speed counter module** integrates seamlessly with the analog I/O configuration, enabling precise counting and timing operations for applications such as motor speed monitoring, encoder feedback, or pulse counting in CNC machines. When paired with the **1746-P2 power supply module**, which provides regulated power distribution to the rack, the entire assembly operates within the robust framework of the **SLC 500**, a proven platform known for its durability and adaptability in harsh industrial environments. This modular design allows for easy expansion and reconfiguration, enabling engineers to scale their control systems efficiently without extensive rewiring or downtime.

Whether deployed in manufacturing plants, chemical processing facilities, or automated assembly lines, this **SLC500 analog I/O slot rack module** delivers a robust solution for real-time data acquisition and control. Its **backward compatibility** with existing SLC 500 systems ensures seamless integration, while its **high-performance analog and digital inputs** enable precise automation and monitoring. With a focus on reliability, flexibility, and industrial-grade performance, this module is a cornerstone for building sophisticated, high-efficiency control systems that meet the demands of modern manufacturing and process automation.

### **Pros and Cons of Buying Allen-Bradley 1746-0A16/1746-IB16/1747-L532/1746-P2 SLC500 Analog I/O Slot Rack Module**

#### **Pros**

1. **Compatibility with Legacy Systems** These modules are designed for the **SLC 500** series, a widely used PLC platform in industrial automation. If your facility still relies on SLC 500 controllers, these modules ensure seamless integration without requiring a full system upgrade.

2. **Reliable Performance** Allen-Bradley (now Rockwell Automation) is a trusted brand with decades of experience in industrial automation. These modules are built to withstand harsh environments, making them suitable for manufacturing, process control, and other industrial applications.

3. **Analog Input/Output Flexibility** The **1746-0A16** (analog input) and **1746-IB16** (analog output) modules provide **16 channels each**, allowing precise control and monitoring of signals such as temperature, pressure, flow, and voltage. The **1747-L532** (power supply) ensures stable operation, while the **1746-P2** (processor) maintains compatibility with older SLC 500 firmware.

4. **Modular Design** The rack-mounted design allows for easy expansion and maintenance. Additional modules can be added as needed, reducing downtime and simplifying upgrades.

5. **Proven Track Record** Since the SLC 500 series was introduced in the 1980s, these modules have been extensively tested in real-world applications. Many industries still rely on them, ensuring availability of spare parts and technical support.

6. **Cost-Effective for Legacy Systems** If upgrading to a newer PLC (such as ControlLogix or CompactLogix) is not feasible, these modules provide a cost-effective solution for maintaining existing automation infrastructure.

7. **Backward Compatibility** The modules work with older **SLC 500** software (RSLogix 500), making them ideal for facilities that lack budget for full system modernization.

---

#### **Cons**

- No new firmware updates or security patches.

- Limited availability of replacement parts over time.

- Potential compatibility issues with newer software or communication protocols.

2. **Limited Scalability** Compared to modern PLCs (e.g., **ControlLogix, CompactLogix, or Micro850**), the SLC 500 has **lower processing power, memory constraints, and slower communication speeds**. This can be a bottleneck in complex automation systems.

3. **Higher Maintenance Over Time** As components age, finding replacement parts may become difficult. Some distributors may no longer stock these modules, leading to longer lead times or higher costs.

- **Ethernet/IP and DeviceNet** for better network integration.

- **Built-in safety functions** (e.g., GuardLogix for safety-rated control).

- **Enhanced diagnostics and remote monitoring** via cloud or HMI integration.

- **Higher resolution and faster analog I/O** (some modern modules support **24-bit resolution** vs. SLC 500 s **12-bit**).

5. **Security Risks** Since the system is no longer updated, it may be vulnerable to **cybersecurity threats** that exploit unpatched vulnerabilities in older firmware.

6. **Training and Expertise Challenges** Fewer engineers are familiar with **RSLogix 500** compared to modern programming environments (Studio 5000). This can increase troubleshooting time and reliance on legacy technicians.

7. **Potential Hidden Costs** If the system requires **additional interfaces (e.g., legacy communication adapters)** to integrate with modern SCADA or MES systems, extra expenses may arise.

---

### **Conclusion**

- Your facility **relies entirely on SLC 500** and has no immediate plans to upgrade.

- You **cannot afford a full system replacement** and need a cost-effective analog I/O solution.

- You have **limited budget constraints** and must maintain existing automation infrastructure.

However, if **long-term reliability, scalability, and security** are priorities, investing in a **modern PLC (e.g., ControlLogix, CompactLogix, or Micro850)** with **Ethernet/IP and advanced diagnostics** would be a **better long-term solution**. The **SLC 500 ecosystem is fading**, and relying on it further may lead to **increased maintenance costs and operational risks** in the future.

---

### **Recommendation**

1. **If Keeping SLC 500 is Non-Negotiable**

- Proceed with purchasing these modules **only if they are still available at a reasonable price**.

- **Document spare parts** and consider **backing up critical programs** to prevent data loss.

- **Monitor for alternative suppliers** (e.g., eBay, industrial surplus markets) as Rockwell may discontinue official sales.

2. **If Planning for Future Upgrades**

- **Evaluate a phased migration** to a newer PLC (e.g., **Micro850 for small systems or ControlLogix for large-scale automation**).

- **Assess integration costs** modern PLCs can often interface with legacy sensors via **analog I/O modules** (e.g., **1756-AIB16** for ControlLogix).

- **Train personnel** on new programming environments to ensure smooth transition.

3. **If Budget Allows, Consider a Hybrid Approach**

- Use **SLC 500 for legacy control loops** where upgrading is impractical.

- **Replace critical sections** with modern PLCs for **better reliability and scalability**.

- **Leverage OPC UA or Ethernet/IP gateways** to bridge old and new systems temporarily.

### **Final Verdict**

The **SLC 500 modules are a viable short-term solution** for maintaining existing automation but **not a sustainable long-term choice**. If possible, **plan for an upgrade** to avoid future compatibility and support issues. If upgrading is impossible, **purchase these modules as a temporary fix** while exploring migration options.

Details:

And the cost of return shipping. Condition Used. Removed From a Working Environment. Items in Lot1.

Model 1746-P2/1746-N2. 3 X 1746-IB16 Input. Country of Manufacture/A. Ask our experts.

Part Number1746-0A16/1746-IB16/1747-L532.

part #: 1746p2 prices

• $149.99-$400.00

specifications sensoindustria:

• brand: Allen Bradley
• mpn: 1746-0a16/1746-ib16/1747-l532
• model: 1746-p2/1746-n2
• part type: Rack Module

shipping sensoindustria:

• type: Calculated
• transit: 2-4 Days
• cost: $33.09
• service: FedEx Ground / FedEx Home Delivery, FedEx 2Day, FedEx Standard Overnight
• carrier: FedEx
• class: Standard, Expedited, One-day

seller sensoindustria:

• city: Millersburg, Indiana
• # reviews: 18604
• rating: 99.9%

returns sensoindustria:

• method: Money back
• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days

offer sensoindustria:

• options: Ship-to-home
• best offers: True
• sold: 0
• started: March 24, 2026
• availability: In Stock
• quantity: 1

general sensoindustria:

• PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules
• condition: Used

payments sensoindustria:

• other
• credit card: Visa
• wallet: Apple-pay

Allen Bradley 1746-P2 Is Similar To:

• 17560a16 17560a16 Allen-bradley Allen Bradley Series (22.2% similar) Allen Bradley cat 17560A16 series a nib...(January 18th, 2018)
• 04eky00001 Allen Bradley Part Flat Power Unused Old Stock (28% similar) System ships via USPS and FedEx ground express. Buyer has option to select alternate transport carrier Ats expense. Allen Bradley part: flat power cable. Fob phoenix...(May 7th, 2018)
• 061259830213 Allen-bradley 2015 Factory Sealed (31.5% similar) Thanks a buyer: member id clobbers private during past month Cisco WS-C3750X-48PF-S brand new sealed 3750X Poe us 2,400. Honest and stood by the product working. 00BEST offer price was accepted view item Allen-Bradley 1756-EN2F EN2F b series new sealed arrived as described. E-mail us first if you ...(July 21st, 2017)
• 081159752880 Allen Bradley 1771-oa 120 (33.3% similar) This item is used. Allen Bradley 1771-OA 120 vac output module 1771OA 1771 manufacturer: Bradley model: 1771-OATYPE: module controller platform: plc 5 used, in working condition...(January 22nd, 2018)
• 100-a09nd3 b B Rockwell Automation Allen-bradley (14.8% similar) Auxiliary contact, 110 120V ac 50 60HZ coil, fully tested, in excellent working and cosmetic condition. Notes:the unit is series condition: pup used in a plc hardware. The serial number in pictures has been altered for privacy purposes...(May 5th, 2017)
• 100-c09 10 Allen Bradley Series Contactor (29.8% similar) Allen Bradley 100-C09 10 series a contractor location 14E...(August 23rd, 2018)
• 100-c23d 10 Allen-bradley Allen Bradley (18.7% similar) Previously used, in very good working condition Allen Bradley 100-C23D 10 contractor coil 32A 600V-690V...(May 5th, 2017)
• 10000134269 Allen Bradley 1756-rio Series (34% similar) Comes with wiring connector. Working when pulled. Appears new, not in original box...(November 13th, 2017)
• 100s-c09ej14bc Allen Bradley New Contactor (28.2% similar) A contractor 24VDC part 100S-C09EJ14BC great price pic. New Allen Bradley sear...(June 1st, 2018)
• 1025732 Allen-braldye Allen-bradley Memory Module (28.2% similar) Allen-bradley memory module cat 1772MEB part this unit appears to be new and in the original box, but I cannot verify...(July 5th, 2017)
• 104-a09nd3 Allen Bradley Reversing Contactor (23.6% similar) Reversing contractor, includes the interlocking end switches to protect from inadvertently shorting power supply...(July 18th, 2018)