MMS6350/DP | Motor Management System

Key Features and Advantages

Comprehensive Motor Protection: The MMS6350/DP provides complete thermal modeling protection with RTD inputs for direct winding temperature measurement, preventing motor damage from overloads, phase imbalances, and locked rotor conditions.

Advanced Diagnostics: Continuous monitoring of motor parameters including current imbalance, power factor, and energy consumption enables predictive maintenance. The integrated event recorder captures 100+ events with time stamps for fault analysis.

PROFIBUS DP Integration: Native PROFIBUS DP connectivity allows seamless integration into automation networks, providing real-time motor status and diagnostics to PLC/DCS systems without additional gateways.

Flexible Configuration: With programmable logic functions and 4 configurable relay outputs, the MMS6350/DP can implement complex control sequences like auto-reset, start interlocking, and load-dependent start inhibition.

Intuitive Interface: The graphic LCD display with multilingual support provides clear status information and simplifies commissioning through guided setup wizards. Emerson’s AMS Device Manager enables remote configuration and monitoring.

MMS6823

Application Fields

The MMS6350/DP protects critical motors across process industries. In water treatment plants, it safeguards pump motors against dry-running and overload conditions. Chemical processing facilities utilize this system for agitator and compressor motor protection where phase imbalance detection prevents catastrophic failures.

Power generation applications include boiler feed pump protection and cooling tower fan motor management. Material handling systems deploy the MMS6350/DP for conveyor motor protection against jams and overloads. Mining operations benefit from its robust construction for crusher and hoist motor protection in harsh environments. With ATEX Zone 2 certification, it’s suitable for hazardous areas in oil refineries and pharmaceutical production.

Related Products

MMS6210: Basic motor protection relay
MMS6850: High-end version with Ethernet/IP
CTB-400: Current transformer set
RTD-MOD: RTD input module
PRO-SOFT: PROFIBUS configuration tool
AMS-SW: Asset management software
MPS-300: Motor protection circuit breaker

Installation and Maintenance

Installation Preparation: Before installing the MMS6350/DP, verify CT ratios match motor specifications. Ensure proper wiring separation between power and control circuits. For PROFIBUS DP networks, install terminating resistors at both ends of the bus and verify unique node addresses.

Maintenance Recommendations: Perform functional tests annually using secondary injection test sets. Monitor thermal capacity utilization through the display or asset management software. Clean ventilation openings annually using low-pressure air. Verify firmware updates using Emerson’s AMS Device Manager. For optimal performance of the MMS6350/DP, recalibrate current measurements every 24 months.