An essential technological innovation  for all AC Electric Motors

Electric motors are the core of many industrial systems: a failure not only causes machine downtime but can also compromise entire infrastructures and generate significant costs. Therefore is not enough ,passive protection it is important to have an intelligent solutions able to diagnose and communicate anomalies in real time.

The DDMP COM (Digital Motor Diagnostic and Protection Device with MODBUS Communication) marks a significant evolutionary leap in motor management.Compact and easy to assemble , it not only protects the motor but also immediately shows the fault reasons  on its integrated screen and transmits diagnostic data via MODBUS RTU.Designed with pass-through current transformers (TA), the device allows the  fast and simple installation on new and existing systems—making it a flexible and strategic choice for modern industrial applications.

Custom-designed intelligent protection for critical environments

Durability  and reliability assured

The device works with a nominal voltage of up to 1000V AC at 50/60Hz and integrates a “Fail Safe” system that prevents motor control when not powered, ensuring maximum operational safety even under absent or unstable power conditions.

Advanced protection solutions for all operating conditions

Any anomaly is indicated by the “AL” LED turning ON and clearly displayed on the screen.

Intelligent Overload Protection: Designed for single-phase and three-phase motors, it provides differentiated cold (5, 10, 20, 30 seconds) and hot (one-third of cold times) protection, compliant with EN/IEC 60947-4-1 standards, featuring four trip classes.

Power Supply Continuity Monitoring: Phase loss protection (>3 seconds) and phase imbalance detection (>40% for 30 seconds)¹ are essential in environments where power quality may be compromised.

Advanced Thermal Monitoring: The system provides:

• Thermistor overtemperature protection >3500±300Ω with automatic reset at 1500±300Ω. Motor protection via thermistor <500Ω.

• External Integration: Alternatively, contacts can be used for external signal reading from a clean contact.

      Industrial connectivity that makes the difference.

MODBUS RTU: The Open-Source Language of Automation

The integration of MODBUS RTU communication permits information transmission.

Real-time Monitoring of Critical Parameters

The device continuously monitors:

• Phase currents for load analysis

• Average current for operational efficiency control

• Thermal load for overheating prevention

• Status of external contacts

LCD Display: Immediate Access to Critical Information

The LCD display with buttons provides direct access to status information, essential for on-site interventions in environments where network connectivity may not always be available.

One Integrated Solution, Six Available Models, Endless Applications

The DDMP COM covers a comprehensive range of applications for a wide power spectrum:

• DDMP 5 COM (1-5A): for auxiliary fans, pumps, and conveyor belts

• DDMP 34 COM (3-34.5A): for service pumps, compressors

• DDMP 65 COM (33-65A): for main pumping systems

• DDMP 320 COM (64-320A): for large pumps, industrial fans

• DDMP 450 COM (90-450A): for large pumping plants

• DDMP 900 COM (180-900A): for propulsion systems

A Strategic Partner for Predictive Analytics and Maintenance

Proactive Component Monitoring

The DDMP COM goes beyond basic protection by enabling monitoring of electrical parameters for maintenance  analysis, while providing instantaneous fault detection.

Operational Efficiency Control: Monitoring nominal current and detecting low current conditions enables the identification of mechanical anomalies, such as broken drive belts, through visual alerts and the transmission of warning byte 255 via MODBUS.

Lifecycle Management:

• Operating Hours Tracking: Automatic monitoring with customizable thresholds (default H=65535)

• Start Count: Tracking the number of startups to schedule preventive maintenance (default St=65535)

Configurable Reset Options

• Tele Reset / Remote Reset / Auto Reset (Alternatively, contacts are used to read an external clean contact signal)

Remote Control Enablement: Capability to remotely manage critical parameters via MODBUS (default RC=NO).

The Future of Motor Protection Technology Is Already Here

The DDMP COM is not only an evolution of traditional protection systems; it represents a revolution in the approach to managing electric motors in critical environments.

For all critical and hard-to-access applications, where reliability is non-negotiable, immediate fault detection can make a significant economic difference by preventing machine downtime, ensuring service continuity, and eliminating the cost of fault diagnostics.

The DDMP COM is the right investment to ensure an only  combination of protection, diagnostics, and communication, transforming each motor into an intelligent component of your system.

The technology is ready. The applications are endless. The time to evolve is now.

For more technical information or to evaluate the application of the DDMP COM in your projects, please contact us for specialized consultation.