Safe Torque Off (STO) is a safety function applied to electric motors to ensure no rotational force (torque) is applied to a load—even if the motor itself still has electrical potential.

The term "safe torque" can be misleading. A truly "safe" torque, by definition, is zero. To achieve this, power to the motor’s drive must be safely and reliably removed, ensuring the motor cannot apply motion.

Key Point: STO is not a brake, not an E-stop, and not a voltage cutoff—it’s a certified safety function for motor control.

Understanding what STO doesn’t do is just as important:

• STO is not a substitute for Lockout/Tagout (LOTO)
• STO is not an emergency stop system
• STO does not guarantee that the load won’t move (especially if it’s gravity-fed or under pressure)
• STO does not remove all voltages—it removes torque production capability from the motor

It’s a functional safety layer—part of a larger risk mitigation strategy.

No. Unlike other motor functions, STO is not configured by an analog setting or numeric value. It’s not something you “tune” in the PLC.

Instead, STO is achieved through:

• Proper device selection (e.g., VFDs or motor starters with STO inputs)
• Smart control system design
• Safety-rated wiring and circuit isolation
• Careful project planning and risk analysis

In sectors like water/wastewater, oil & gas, and industrial manufacturing, the cost of injury or uncontrolled motion isn’t just financial—it’s regulatory and reputational.

Implementing STO adds a layer of protection for maintenance and operations personnel, especially during activities like:

• Motor troubleshooting
• Drive resets
• Mechanical servicing of connected equipment

STO is recognized in U.S. and international safety standards, including those from IEC, NFPA, and corporate or insurance-driven risk frameworks.

At Atlas OT, we support STO implementation as part of larger control system modernization or equipment upgrade efforts. Our approach includes:

• Risk-based analysis: Determine which motors need STO based on hazards, operations, or near misses
• Control system design: Engineer the right safety logic and wiring to enable STO without compromising operations
• Training & procedures: Ensure your field teams understand what STO does—and doesn’t do
• Support with device selection: Help machine builders, OEMs, and operators specify STO-capable hardware
• Documentation for compliance: Ensure STO strategies align with applicable standards and site policies

We recommend that organizations consider STO after:

• A safety review
• A process hazard analysis (PHA)
• A mechanical near-miss
• A retrofit or modernization planning cycle

Implementing STO isn’t just about ticking a safety box—it’s about building resilient, reliable systems that prioritize people first.

If your facility uses motors (and whose doesn’t?), STO is worth considering—not as a replacement for safety, but as a supplement to it.

At Atlas OT, we help you understand the requirements, design with intent, and execute solutions that protect your people and your process.

Ready to discuss how STO fits into your safety or modernization plans?

Contact Atlas OT to schedule a review.

MLnext is a powerful, vendor-neutral machine learning platform developed by one of Atlas OT’s trusted technology partners. It’s designed to detect anomalies, recommend action, and optimize operations—not just guess at problems based on outdated assumptions.

What makes MLnext different is how transparent and accessible it is:

• Visible Operations: The ML models and their performance are fully visible through a web browser—no “black box” AI logic.
• Vendor-Agnostic: Collects data from any PLC, DCS, or control platform—no vendor lock-in.
• Flexible Deployment: Runs on Windows or Linux, and can live on either the OT or IT network, depending on your infrastructure and security model.
• Model Efficiency: Once configured, MLnext learns the normal behavior of your process. When something deviates, it flags the issue and alerts operators or maintenance staff in real time.
• Minimal Setup Overhead: You don’t need to filter every tag or build every correlation manually. MLnext figures it out for you.

What makes MLnext ideal for maintenance teams is that it doesn’t require you to calculate “percent onstream” or breakeven costs manually. It watches the entire system in real-time, identifies the earliest signs of failure, and pushes relevant, prioritized alerts to the people who need to know.

For example:

• A vibration sensor that spikes slightly—but doesn’t yet exceed a high alarm
• A motor that begins drawing slightly more current than normal during startup
• A valve with gradually increasing cycle times
• 
  

Instead of generating 50 raw data trends, MLnext connects the dots and flags actionable anomalies before they turn into downtime.

At Atlas OT, we configure MLnext as part of a larger plant optimization and reliability strategy. In water, oil & gas, food & beverage, and heavy industrial facilities, the results are consistent:

• Reduced unplanned downtime
• Lower maintenance costs
• Smarter resource planning
• Millions in potential annualized production gains through improved process stability

It’s not theoretical—it’s practical, and it’s already delivering measurable returns.

MLnext aligns with Atlas OT’s core values:

• Vendor-neutral platforms
• Cross-disciplinary implementation
• Transparent technology with real ROI
• Scalable integration across critical infrastructure sectors

Whether you're a maintenance supervisor, plant manager, or process engineer, MLnext brings insight and clarity to where it matters most: the health of your systems.

Let’s talk about how MLnext can be part of your next upgrade—or how we can integrate it with your existing infrastructure.

Energy monitoring in water and wastewater treatment plants is no longer a luxury—it's an operational necessity.

Rising electricity costs, aging infrastructure, and high-risk downtime are forcing utilities to rethink how they monitor and manage energy consumption. And while many industrial facilities can temporarily shut down to address a power issue, municipal water and wastewater systems cannot afford to stop.

At Atlas OT, we design and implement vendor-neutral control and monitoring systems that empower utilities to detect problems early, reduce unplanned costs, and optimize performance.

Electricity rates are increasing faster than inflation and economic growth, climbing at approximately 5% per year. Meanwhile, cooling loads and AI-related energy demands are also growing at similar rates. But generation capacity isn't keeping up—resulting in higher costs and tighter constraints.

For water and wastewater operators, this isn’t just an OPEX concern. It’s a mission-critical risk.

Unlike commercial or industrial buildings, where a power failure may result in temporary closures or mild inconvenience, utility systems must run 24/7. When something goes down—whether it's a transformer, a sewage pump, or a power feeder—the consequences can be:

- Environmental spills

- Public health hazards

- Regulatory violations

- Emergency response costs

And even with backup generation in place, failure events can spiral fast—especially when they start with undetected electrical issues.

Seemingly minor electrical imbalances can lead to catastrophic equipment damage:

- A 2% voltage imbalance across a three-phase motor can cause temperature spikes of 10°C.

- This rise in heat cuts motor winding insulation life by half.

- The same rule applies to transformer oils and other heat-sensitive components.

Rule of thumb: Every 10°C increase in operating temperature halves the lifespan of electrical insulation and oils.

Energy monitoring allows utilities to detect these anomalies before they become unplanned CAPEX events.

Even if you’re ready to spend, you might not be able to get what you need in time:

- Variable frequency drives (VFDs): 26-week lead times

- Large power transformers: up to 120 weeks

If a critical component fails without warning, a utility may be forced to rent backup systems—for months or even years—at enormous cost.

Energy monitoring gives you early visibility, helping you plan replacements proactively rather than reactively.

Many water and wastewater facilities pay 40% or more of their electricity budget on demand charges—even if those peak usage periods only last minutes.

Energy monitoring systems can be programmed to:

- Alert operators in real time if demand spikes occur during high-cost hours

- Predict billing impacts before they happen

- Optimize load sequencing to reduce demand-related penalties

Modern energy monitoring tools aren’t standalone—they integrate directly into your SCADA or OT system.

With a fully integrated setup, you can:

- Push alerts to operators via HMI, text, app, or call

- Trigger alarms visually on control panels

- Escalate alerts to management for revie

- Log historical data for compliance or engineering analysis

Quick, automated notification ensures issues are caught early and escalated fast—before they become outages, fines, or environmental disasters.

For water and wastewater utilities, the risk of inaction is far higher than the cost of prevention. Energy monitoring provides the visibility needed to:

✅ Extend asset lifespan

✅ Avoid unplanned CAPEX

✅ Cut energy-related OPEX

✅ Stay compliant with utility billing and regulatory limits

✅ Improve response times for operations and management

At Atlas OT, we help utilities modernize with vendor-neutral, SCADA-integrated energy monitoring systems that reduce downtime and increase return on investment.