Baldor MN770 manual Safety Notice

Page 6

Safety Notice

This equipment contains voltages that may be as great as 1000 volts! Electrical shock

 

can cause serious or fatal injury. Only qualified personnel should attempt the start-up

 

procedure or troubleshoot this equipment.

 

This equipment may be connected to other machines that have rotating parts or parts

 

that are driven by this equipment. Improper use can cause serious or fatal injury. Only

 

qualified personnel should attempt the start-up procedure or troubleshoot this equipment.

PRECAUTIONS

 

 

WARNING: Do not touch any circuit board, power device or electrical

 

connection before you first ensure that power has been

 

disconnected and there is no high voltage present from this

 

equipment or other equipment to which it is connected. Electrical

 

shock can cause serious or fatal injury. Only qualified personnel

 

should attempt the start-up procedure or troubleshoot this

 

equipment.

 

WARNING: Be sure that you are completely familiar with the safe operation of

 

this equipment. This equipment may be connected to other

 

machines that have rotating parts or parts that are controlled by

 

this equipment. Improper use can cause serious or fatal injury.

 

Only qualified personnel should attempt the start-up procedure or

 

troubleshoot this equipment.

 

WARNING: This unit has an automatic restart feature that will start the motor

 

whenever input power is applied and a RUN (FWD or REV)

 

command is issued and maintained. If an automatic restart of the

 

motor could cause injury to personnel, the automatic restart feature

 

should be disabled. Disable by changing the ªRestart Auto/Manº

 

parameter to MANUAL.

 

WARNING: Be sure the system is properly grounded before applying power.

 

Do not apply AC power before you ensure that all grounding

 

instructions have been followed. Electrical shock can cause

 

serious or fatal injury.

 

WARNING: Do not remove cover for at least five (5) minutes after AC power is

 

disconnected to allow capacitors to discharge. Dangerous voltages

 

are present inside the equipment. Electrical shock can cause

 

serious or fatal injury.

 

WARNING: Improper operation of control may cause violent motion of the

 

motor shaft and driven equipment. Be certain that unexpected

 

motor shaft movement will not cause injury to personnel or damage

 

to equipment. Peak torque of several times the rated motor torque

 

can occur during control failure.

 

WARNING: Motor circuit may have high voltage present whenever AC power is

 

applied, even when motor is not rotating. Electrical shock can

 

cause serious or fatal injury.

 

WARNING: Dynamic Brake Hardware may generate enough heat to ignite

 

combustible materials. Keep all combustible materials and

 

flammable vapors away from Dynamic Brake Hardware.

Continued on Next Page

MN770

General Information 1-3

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Contents Elevator Application Guide MN770Table of Contents Ii Table of Contents MN770 Drive Definition Section General InformationIntroduction ModernizationsLimited Warranty Safety Notice VAC or 460 VAC maximum per control rating Perform a ªMeggerº test. Failure to disconnect motor fromUnderwriter Laboratory requirements Overview FeatureSection Technologies Drive Performance ComparisonDC SCR Control 20H ControlInverter 15H Control21H Control Vector 17H & 18H Controls22H Control Section Application Considerations Electric Drives Common Control Features Operating ModeAvailable Operating Modes Elevator Motor Horsepower Selection US Measurement SystemMetric Measurement System Motor Sizing Dynamic Brake Hardware Selection OCW =Encoder Retrofit Section Hardware InformationGeneral Considerations Cable PreparationEncoder Cables Encoder End Control End Encoder Cable ConnectionDifferential Connections Single Ended ConnectionsBuffered Encoder Output Field Control Section Set-Up InformationDC SCR Controls FeedbackFinal Installation Overload = Fault Following Error = on Torque Proving = onFinal Adjustments Speed Command Armature EnableBrake Release Signal ContactorInitial Installation and Startup Inverter ControlsPage TURN-ON Vector Controls Balanced Car Test Full Load TestFinal Wiring Connections Series 18H Control ConsiderationsProcedure Initial Set-upSlip Adjustment Value Rated Motor Load Slip Adjustment ValueFinal Set-up Power Up/Down Sequence for Vector Controls Pre-Installation Tests DateVector Control Worksheet Set-Up Information MN770 Section Troubleshooting Electrical Noise Display R-C Snubber Circuit & twisted-pair Electrical Noise Considerations10HP, 460VAC Drive 30HP, 500VDC Drive, Shielded 10 Isolated Mounting Method Analog Signal Wires Wiring PracticesPower Wiring Encoder CircuitsOptical Couplers Optical IsolationPlant Ground Fiber OpticsAppendix a Load Weighing / Torque Feed ForwardTable A-1 Description of OperationAppendix B Serial CommunicationsAppendix B MN770 Appendix C Elevator Industry GlossaryPage Page Appendix C MN770 Box  Baldor Electric Company MN770 97 C&J300

MN770 specifications

The Baldor MN770 is an impressive industrial motor designed for a variety of applications, showcasing robust construction and advanced technology. Known for its reliability and efficiency, the MN770 is manufactured by Baldor Electric Company, a prominent name in the electric motor industry.

One of the main features of the MN770 is its high-efficiency design. This motor adheres to stringent efficiency standards, helping to reduce energy consumption and lower operational costs. It typically meets or exceeds NEMA Premium Efficiency ratings, making it an excellent choice for businesses looking to optimize their energy use.

The MN770 motor is built with a durable cast iron frame, ensuring longevity and resistance to harsh operating conditions. Its weatherproof design is ideal for both indoor and outdoor applications, making it suitable for various environments, including manufacturing plants, water treatment facilities, and agricultural operations.

Another significant characteristic of the MN770 is its versatility. The motor is available in a range of horsepower ratings, allowing users to select the model that best fits their specific needs. Additionally, it offers various mounting configurations and voltage options, further enhancing its adaptability for diverse applications.

The motor utilizes advanced insulation systems and cooling technologies to ensure optimal performance and a longer lifespan. The robust design helps to dissipate heat effectively, enabling the motor to operate efficiently even under heavy loads. This characteristic is essential for applications requiring continuous operation without compromising reliability.

Moreover, the Baldor MN770 incorporates advanced design features such as precision-balanced rotors and high-performance bearings. These characteristics contribute to reduced vibration and noise levels, promoting a quieter working environment and improving overall operation efficiency.

In summary, the Baldor MN770 motor stands out due to its high efficiency, robust construction, versatility, and advanced technologies. Its ability to perform reliably in various industrial applications makes it a popular choice among engineers and facility managers. Investing in the MN770 not only enhances operational efficiency but also supports sustainability efforts by reducing energy consumption in industrial environments.
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