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Motor Monitor®: Voltage and Current Fault Protection Relay
Features:
• Protects electric motors and pumps from 1 to 800 HP.
• Operates from 180 to 520 V in the same unit.
• LCD screen displaying voltages, currents, faults, delays, and settings menu.
• Easy to adjust and install, with front panel or DIN rail mounting options.
• Voltage logger output.
• Permanent memory storing the last 10 faults.
• Compatible with Modbus TCP/IP communication for remote monitoring.
• Certified by UL de México SA de CV.
Description:
The Motor Monitor® is the most advanced protection solution on the market for three-phase motors and pumps from 1 to 800 HP. It protects against low and high voltage, phase failure, imbalance, reverse rotation, overload, underload, dry running in pumps (without needing probes in the water), frequent starts, locked rotor, and shaft breakage.
The Motor Monitor® operates by disconnecting the contactor to shut down the motor or equipment when it detects a fault that could cause damage. Its LCD screen provides real-time display of the three voltages, three line currents, detected faults, maximum and minimum voltage values, and the settings menu.
It includes a permanent memory that stores the last 10 detected faults and a fault simulation button for installation verification.
Configurable delay settings help prevent unnecessary disconnections due to transient faults. Additionally, it allows selection of overload trip curves in class 5, 10, 20, or 30. It includes the three necessary current transformers for operation.
The Motor Monitor® is compatible with the DL-100 voltage logger, which records voltages and faults to a USB memory for analysis on a computer using Nassar Data View software.
Optional Equipment (Accessories):
• DL-100 Voltage Logger: Records voltages and faults for detailed analysis.
• PMF-237 Front Panel Mounting Plate: Facilitates installation in control panels.
• Modbus TCP/IP Adapter: Enables remote communication and real-time analysis.
| Models | Current Range | Operating Voltage |
| MM-80 | 2 to 80 Amp | 180 to 520 VAC 50/60 Hz |
| MM-400 | 40 to 400 Amp | 180 to 520 VAC 50/60 Hz |
| MM-1000 | 100 to 1,000 Amp | 180 to 520 VAC 50/60 Hz |
Voltage Accuracy: 1% at 25°C (77°F) with balanced voltages.
• Current Accuracy: 1% at 25°C (77°F).
• Reset Type: Adjustable, manual, or automatic.
• Output Contacts: SPDT 10 A @ 240 VAC, 2 A @ 440 VAC (resistive load).
- Electrical lifespan: 150,000 operations.
- Mechanical lifespan: 10,000,000 operations.
• Modbus Communication (optional): Modbus TCP/IP via Ethernet.
• Data Logger Output: Records voltages and faults using the DL-100.
• Packaged Weight:
MM-80: 0.793 Kg (28 oz).
MM-400: 2.31 Kg (81.5 oz).
MM-1000: 2.46 Kg (86.8 oz).
• The Motor Monitor has been designed according to the following standards:
IEC 61010-1, IEC 60255-6, IEC 60255-8, IEEE C37.112, UL 508, UL 60947.
