{"product_id":"ge-mmii-pd-1-2-120-motor-protection-relays","title":"GE MMII-PD-1-2-120  Motor Protection Relays","description":"\u003cp\u003eThe \u003cstrong\u003eGE Multilin MMII-PD-1-2-120\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eMMII-PD-1-2-120\u003c\/strong\u003e Motor Manager II, operates as a dedicated hardware component for motor protection and process control within industrial motor control center (MCC) architectures. Configured for high-speed fault detection and relaying, the \u003cstrong\u003eGE Multilin MMII-PD-1-2-120\u003c\/strong\u003e (\u003cstrong\u003eMMII-PD-1-2-120\u003c\/strong\u003e Motor Manager II) provides direct electrical execution of thermal, overload, and unbalance monitoring routines.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eMMII-PD-1-2-120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE Multilin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMarkham, Ontario, Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.36 kg (3.0 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e18.8 cm L x 11.2 cm H x 12.7 cm W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandard internal control voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMotor Protection Relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003e1,200 bps – 19,200 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control and Protection Metrics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Communication Velocity:\u003c\/strong\u003e The unit utilizes serial communication interfaces for data exchange with the EnerVista MMII software suite. The communications architecture supports baud rates up to 19,200 bps, enabling deterministic monitoring of phase currents and thermal capacity in real time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfinet \/ EtherNet\/IP Deterministic Networks:\u003c\/strong\u003e While utilizing legacy serial protocol standards, the device is engineered for deterministic data logging of motor parameters, including ground current and energy consumption, ensuring that the motor control loop maintains integrity during rapid operational changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling:\u003c\/strong\u003e The compact chassis integrates protective relaying, metering, and motor control routines, effectively reducing the requirement for auxiliary transducers or external monitoring modules. The internal thermistor circuit and undervoltage auto-restart logic facilitate complex motor sequencing without external I\/O expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Flash Compatibility:\u003c\/strong\u003e The device supports configuration via the EnerVista MMII software platform, allowing for field-adjustable parameters to be tuned based on specific motor thermal profiles and load conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the MMII-PD-1-2-120 support hot-swapping within an MCC cabinet?\u003c\/p\u003e\n\u003cp\u003eA: No. The MMII-PD-1-2-120 is not designed for hot-swapping. The MCC bucket or control rack must be isolated from the power source and the control voltage must be disconnected before attempting installation or removal to prevent potential arc-flash hazards or damage to the module's communication ports.\u003c\/p\u003e\n\u003cp\u003eQ: How do the LED indicators on the faceplate correlate to system status?\u003c\/p\u003e\n\u003cp\u003eA: The faceplate LEDs provide real-time diagnostic status of the motor control process. They specifically signal trigger events, such as alarms for motor stalls, phase unbalance, or contactor failure. Operators should refer to the system diagnostic log to correlate LED states with specific fault codes displayed on the LCD.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Mounting:\u003c\/strong\u003e Secure the unit within the panel cutout using the provided mounting hardware. Ensure the chassis is bonded to the cabinet’s common ground plane to facilitate the correct operation of the internal surge protection components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring and Termination:\u003c\/strong\u003e Use shielded twisted-pair cabling for all serial communication lines to minimize electromagnetic interference (EMI) typical of motor control environments. Terminate shields at a single point to prevent ground loops that could introduce errors in the 4–20 mA analog input readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Environment:\u003c\/strong\u003e Ensure that the unit is not installed in locations with excessive radiant heat from motor starters or high-current bus bars. While rated for operation up to 60 deg C, maintaining a lower ambient temperature will significantly extend the service life of the onboard LCD and electrolytic capacitors.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":47953815535806,"sku":"MMII-PD-1-2-120","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-06_10-08-31_8f9c0b73-086a-4269-a89c-39a8f62b46a0.png?v=1783304774","url":"https:\/\/www.autooiltech.com\/es\/products\/ge-mmii-pd-1-2-120-motor-protection-relays","provider":"AutoOilTech Limited","version":"1.0","type":"link"}