DATAFORTH SCM5B31-00 Isolated Analog Voltage Module SCM5B31-09 Bandwidth

( Brand: Dataforth ), ( Manufacturer Part Number: SCM5B31-00 ), ( Model: SCM5B31-09 ), ( Part Type: Voltage Module ), ( Analog/digital: Analog )

Review DATAFORTH Isolated Analog Voltage Input Module Narrow Bandwidth

The **Dataforth SCM5B31 series** specifically the **SCM5B31-00** and **SCM5B31-09** represents a high-performance, isolated analog voltage module designed for precision signal conditioning, data acquisition, and industrial automation applications where electrical isolation, noise immunity, and bandwidth efficiency are critical. These modules belong to Dataforth s **SCM5 series**, a family of compact, ruggedized signal conditioners engineered to interface analog signals between control systems and field devices with exceptional reliability. The **SCM5B31-00** and **SCM5B31-09** variants are particularly notable for their **isolated analog voltage input/output capabilities**, enabling seamless communication between low-level analog signals and digital control systems while maintaining galvanic isolation to protect sensitive electronics from voltage spikes, ground loops, or electromagnetic interference (EMI).

At the core of these modules is a **high-precision analog front end** featuring a **wide input voltage range** (typically 10V or 0 20mA for the SCM5B31-00, with the SCM5B31-09 offering a 10V differential input) paired with **optical isolation technology** to ensure safety and data integrity in harsh industrial environments. The **bandwidth** of these modules is a defining feature, with the SCM5B31 series capable of handling signals up to **100 kHz** (or higher, depending on specific configuration), making them suitable for applications requiring dynamic signal processing, such as motion control, sensor monitoring, or real-time data logging. This high-frequency response is complemented by **low noise performance**, ensuring that even subtle analog variations are accurately captured without degradation.

The **SCM5B31-00** and **SCM5B31-09** are housed in a **compact, DIN-rail or panel-mountable enclosure**, designed for easy integration into existing control systems. Their **modular design** allows for flexible configuration, with options for **single-ended or differential inputs**, **current-to-voltage conversion**, and **output scaling** to match specific application requirements. The modules also incorporate **built-in protection features**, such as overvoltage and short-circuit safeguards, to extend equipment lifespan in demanding environments. Additionally, their **isolated digital communication interfaces** (such as RS-232, RS-485, or Modbus RTU) facilitate seamless integration with PLCs, SCADA systems, or other industrial controllers, enabling real-time signal acquisition and processing.

Beyond their technical specifications, the SCM5B31 series excels in **reliability and durability**, with components rated for extended operational lifespans in temperatures ranging from **-40 C to 85 C**, making them ideal for outdoor, automotive, or marine applications. The modules **low power consumption** further enhances their suitability for battery-powered or energy-efficient systems. Whether used in **process automation, robotics, or advanced instrumentation**, the SCM5B31-00 and SCM5B31-09 deliver a robust, high-bandwidth solution for isolating and conditioning analog signals with precision, ensuring optimal performance in even the most challenging environments.

The **Dataforth SCM5B31-00** and **SCM5B31-09** are isolated analog voltage modules designed for signal conditioning, isolation, and amplification in industrial and automation applications. Below is a detailed breakdown of their pros and cons, followed by a conclusion and recommendation.

---

### **Pros of the SCM5B31 Series**

1. **High Isolation Voltage**

- Both models provide **500V RMS isolation**, which is critical in noisy or high-voltage environments to prevent ground loops and ensure safety. This is particularly useful in industrial settings where equipment may share a common ground or operate near high-voltage sources.

2. **Wide Input Voltage Range**

- The modules accept ** 25V DC input**, which is broader than many competitors offering only 10V or 12V. This flexibility accommodates a variety of sensors and signals without requiring additional conditioning.

3. **Isolated Output**

- The output is also isolated, allowing for safe transmission of signals to PLCs, RTUs, or other devices without risking ground loops or electrical interference. This is essential in distributed systems where multiple devices share a common ground.

4. **High Bandwidth (SCM5B31-09)**

- The **SCM5B31-09** variant has a **bandwidth of 100 kHz**, making it suitable for applications requiring fast signal processing, such as motor speed monitoring, vibration analysis, or high-frequency sensor signals. The **SCM5B31-00** has a lower bandwidth (typically 1 kHz), which may suffice for slower analog signals like temperature or pressure sensors.

5. **Low Noise and High Accuracy**

- The modules are designed with low noise and high precision, ensuring that the output signal closely matches the input with minimal distortion. This is important for applications where signal integrity is critical, such as in control systems or data acquisition.

6. **Compact and Modular Design**

- The modules are part of Dataforth s **SCM series**, which is designed for easy integration into modular I/O systems. Their compact size makes them suitable for space-constrained environments, such as control panels or distributed I/O racks.

7. **Hot-Swappable and Field-Replaceable**

- Many Dataforth modules are designed to be hot-swappable, meaning they can be replaced or upgraded without powering down the system. This reduces downtime and simplifies maintenance.

8. **Compatibility with Dataforth s Ecosystem**

- If you are already using other Dataforth products (e.g., isolators, signal conditioners, or I/O modules), these SCM5B31 modules will integrate seamlessly into your existing system. This can simplify inventory management and reduce compatibility issues.

9. **Wide Operating Temperature Range**

- The modules typically operate in a temperature range of **-40 C to 85 C**, which is suitable for industrial environments where extreme temperatures are common.

10. **Galvanic Isolation for Safety**

- Isolation not only prevents ground loops but also enhances safety by preventing high-voltage faults from affecting downstream equipment. This is particularly important in hazardous environments or where compliance with standards like IEC 61131-2 is required.

---

### **Cons of the SCM5B31 Series**

1. **Limited Output Voltage Range**

- The output is ** 10V DC**, which may be restrictive for applications requiring higher voltage outputs (e.g., some analog-to-digital converters or legacy systems expecting 12V or 5V). This could necessitate additional scaling or conversion.

2. **No Built-in Filtering for High-Frequency Noise**

- While the **SCM5B31-09** has a high bandwidth, it does not include built-in filtering for high-frequency noise. In noisy environments, additional external filtering (e.g., RC filters or low-pass filters) may be required to clean the signal before amplification.

3. **Cost**

- Dataforth modules are generally **premium-priced** compared to generic or no-name isolators. For budget-conscious projects, alternatives from brands like **Texas Instruments (ISO124), Analog Devices, or even some off-the-shelf modules** may offer similar performance at a lower cost.

4. **Limited Customization**

- The SCM5B31 series does not offer extensive customization options (e.g., adjustable gain, configurable output ranges, or programmable thresholds). If your application requires fine-tuned signal processing, you may need to pair these modules with additional components or use a different series.

5. **Dependence on Dataforth s Support**

- If you are not already invested in Dataforth s ecosystem, you may face challenges finding local technical support, documentation, or spare parts compared to more widely adopted brands like Siemens, Allen-Bradley, or Rockwell Automation.

6. **Potential Latency in High-Bandwidth Applications**

- While the **SCM5B31-09** has a 100 kHz bandwidth, real-world performance may still introduce slight latency or phase shift in fast-changing signals. This could be a consideration for applications like high-speed motor control or real-time data acquisition.

7. **No Built-in Diagnostics**

- Unlike some advanced industrial modules, the SCM5B31 series does not include built-in diagnostics (e.g., fault detection, open-circuit detection, or self-test capabilities). This may require additional monitoring hardware or software to ensure reliability.

8. **Limited Availability of Documentation**

- While Dataforth provides technical documentation, it may not be as extensive or user-friendly as that of larger manufacturers. This could pose challenges for engineers new to the product line.

---

### **Comparison of SCM5B31-00 vs. SCM5B31-09**

- **SCM5B31-00**: Suitable for **low-frequency signals** (e.g., temperature, pressure, or slow-moving analog sensors) with a **1 kHz bandwidth**. Ideal for cost-sensitive applications where high-speed performance is unnecessary.

- **SCM5B31-09**: Better for **high-frequency signals** (e.g., motor speed, vibration, or fast-changing analog outputs) due to its **100 kHz bandwidth**. Justified by applications requiring faster signal processing.

---

### **Conclusion**

The **Dataforth SCM5B31-00 and SCM5B31-09** are robust, isolated analog voltage modules that excel in environments requiring **high isolation voltage, wide input range, and clean signal transmission**. They are particularly well-suited for industrial automation, control systems, and applications where galvanic isolation is critical for safety and performance.

However, their **limited output voltage range, lack of built-in filtering, and higher cost** may make them less ideal for applications requiring extensive signal conditioning or where budget is a constraint. Additionally, users not already invested in Dataforth s ecosystem may find support or documentation less accessible.

- **SCM5B31-00** is sufficient for **slow-moving analog signals** and cost-effective solutions.

- **SCM5B31-09** is necessary for **high-frequency applications** where bandwidth is a critical factor.

---

### **Recommendation**

- You require **high isolation voltage (500V RMS)** for safety or noise immunity.

- Your signals are **within 25V DC input** and require **isolated transmission** to a PLC or RTU.

- You need **high bandwidth (100 kHz for SCM5B31-09)** for fast-changing signals.

- You are already using **Dataforth products** and want seamless integration.

- Your application operates in **industrial environments** with temperature extremes.

- You need **higher output voltage ranges** (e.g., 12V or 15V). In this case, evaluate modules like the **Texas Instruments ISO124** or **Analog Devices AD215**.

- Your budget is tight, and you can tolerate slightly lower isolation or performance. Brands like **Siemens (SIMATIC ET 200SP)** or **Allen-Bradley (CompactLogix with built-in isolation)** may offer cost-effective solutions.

- You require **built-in diagnostics, adjustable gain, or programmable features**. Look into **programmable isolators** like the **Dataforth SCM5B32** or **National Instruments isolated signal conditioners**.

- Your signals are **extremely noisy**, and you need **active filtering**. Pair these modules with external filters or consider **active isolators** with built-in noise suppression.

- If you are not already committed to Dataforth, **evaluate alternatives** that offer similar isolation but may be more cost-effective or better supported in your region.

- If **high bandwidth is critical**, the **SCM5B31-09** is a strong choice, but verify if the **100 kHz bandwidth** is sufficient for your application (some high-speed signals may require even higher bandwidth).

- If **cost is a priority**, explore **generic isolated amplifiers** from brands like **Burr-Brown (now TI)** or **Maxim Integrated**, which may offer comparable performance at a lower price.

- If you

Details:

The Dataforth SCM5B31-09 is a narrow band width isolated analog voltage input module designed for use in PCs and other industrial automation systems. With its focus on analog inputs and isolated design, the SCM5B31-09 provides reliable accurate conversion of signals for use in control systems. This module, specifically designed by Dataforth, is ideal for analog signal processing in a variety of applications.

part #: scm5b3100 prices

• $216.67-$582.79

specifications sensoindustria:

• brand: Dataforth
• mpn: Scm5b31-00
• model: Scm5b31-09
• part type: Voltage Module
• analog/digital: Analog

general sensoindustria:

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

offer sensoindustria:

• quantity: 1
• sold: 0
• availability: In Stock
• best offers: True
• started: February 19, 2026
• options: Ship-to-home

payments sensoindustria:

• credit card: Diners-club
• wallet: Google-pay
• other

shipping sensoindustria:

• class: Standard
• service: USPS Ground Advantage
• type: Calculated
• carrier: USPS
• transit: 5-11 Days
• cost: $5.52

seller sensoindustria:

• # reviews: 68
• city: Apache Junction, Arizona
• rating: 100.0%

returns sensoindustria:

• policy: No Returns

Dataforth SCM5B31-00 Is Similar To:

• Dsca31 Dataforth Isolated Input Module Analog Voltage (47.8% similar) Shipping: domestic shipping is to the lower 48 us. This charge is for shipping, handling and materials. Items are sold as is. A small shipping charge is added to items purchased for less than 100 and weighing more 20 lbs. All prices are negotiable...(November 5th, 2018)
• Dsca41-13 Dataforth Isolated Wideband Input Module (48.9% similar) This was lightly used for development. I have no way of testing it, so am selling this as-is, USA48 only...(October 7th, 2018)
• Knox60011620-scm5b39-1006 Dataforth Isolated Current Output New In Bag (38.7% similar) If another carrier such as ups or FedEx is required to ship due the size, then shipping costs may change...(August 4th, 2018)
• Scm5847k-13 Dataq Dataforth Linearized Type Thermocouple Input Tested (35.1% similar) Only pictured items are included - cables and other accessories not unless explicitly stated shown in pictures. Data Dataforth DI-5B47 SCM5847K-13 linearity type k Thermopylae input tested this has been and it is in good working order. Sold as pictured. This is in good physical condition overall ...(October 10th, 2018)
• Scm5b31-02 Dataforth Isolated Voltage Input Module (57.8% similar) I have no way of testing it, so am selling this as-is, USA48 only. This was lightly used for development...(February 8th, 2019)
• Scm5b45-03 Dataforth New Frequency Input Module Ref (39.7% similar) Dataforth SCM5B45-03 new frequency input module ref old stock in original shrink wrap and documentation B38...(February 16th, 2019)
• Scm5b47k-04 Dataforth Isolated Linearized Type Thermocouple Input Module (48.4% similar) This was lightly used for development. I have no way of testing it, so am selling this as-is, USA48 only...(July 22nd, 2018)
• Scm5b47k-05 Dataforth Isolated Linearized Type Thermocouple Input Module (48.4% similar) This was lightly used for development. I have no way of testing it, so am selling this as-is, USA48 only...(February 8th, 2019)
• Scm5b49-02 Dataforth 5v Analog Output (37.7% similar) Untested analog output module pulled from an old system, worked when last used probably still works fine, but and in unknown condition...(November 28th, 2017)
• Scm9b Dataforth Voltage Output Module (45.9% similar) Location B-S8. Computer to analog voltage output module Dataforth SCM9B -3172, range: 5 volts , RS-485, 0140, isolated interface designed for remote installation and communication with host via rs 485 serial port. 12 bit resolution in a range of analog output voltage...(July 5th, 2018)
• Scmpb01 Dataforth Analog Voltage Input Module Wide Bandwidth (66.2% similar) Q SCM5B41-03. Ru-Ru . Its popular...(October 19th, 2019)