Baldor MN770 manual Encoder Cable Connection, Differential Connections, Encoder End Control End

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Encoder Cable Connection

Encoder cable must be separated by at least 3º from parallel runs of power wires. Encoder cables that cross power wires must cross at a 90° angle only. Encoder wires must be #22 AWG (0.34mm2) minimum, 200 feet maximum length and must have an overall shield.

Note: Be careful not to pinch the wires' insulation in terminal. If insulation is caught in screw terminal, proper electrical connection will not be made. Encoder will not operate properly.

1.Feed the control end of the cable through one of the holes in the control case so connections can be made inside the control.

2.Differential Connections

Connect the cable braided shield to J1-30 at control end. Connect the cable ends as follows: (See Figure 3-2.)

Encoder End

Control End

A

J1-23 (A)

H

 

 

 

 

 

J1-24 (A)

B

J1-25 (B)

J

 

 

 

 

 

J1-26 (B)

C

J1-27 Index(C)

K

J1-28

 

 

 

Index(C)

 

D

J1-29

(+5VDC)

F

J1-30

(Common)

E

N/C

 

 

 

 

 

3.Single Ended Connections

Differential inputs are recommended for best noise immunity. If only single ended encoder signals are available, connect them to A, B, and INDEX (C) (J1-23, J1-25 and J1-27 respectively).

MN770

Hardware Information 4-3

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Contents Elevator Application Guide MN770Table of Contents Ii Table of Contents MN770 Section General Information IntroductionDrive Definition ModernizationsLimited Warranty Safety Notice Underwriter Laboratory requirements VAC or 460 VAC maximum per control ratingPerform a ªMeggerº test. Failure to disconnect motor from Feature Section TechnologiesOverview Drive Performance ComparisonDC SCR Control 20H Control21H Control Inverter15H Control 22H Control Vector17H & 18H Controls Section Application Considerations Electric Drives Available Operating Modes Common Control FeaturesOperating Mode Metric Measurement System Elevator Motor Horsepower SelectionUS Measurement System Motor Sizing Dynamic Brake Hardware Selection OCW =Section Hardware Information General ConsiderationsEncoder Retrofit Cable PreparationEncoder Cables Encoder Cable Connection Differential ConnectionsEncoder End Control End Single Ended ConnectionsBuffered Encoder Output Section Set-Up Information DC SCR ControlsField Control FeedbackFinal Installation Overload = Fault Following Error = on Torque Proving = onFinal Adjustments Armature Enable Brake Release SignalSpeed Command ContactorInitial Installation and Startup Inverter ControlsPage TURN-ON Vector Controls Balanced Car Test Full Load TestFinal Wiring Connections Series 18H Control ConsiderationsProcedure Initial Set-upFinal Set-up Slip Adjustment ValueRated Motor Load Slip Adjustment Value 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 Wiring Practices Power WiringAnalog Signal Wires Encoder CircuitsOptical Isolation Plant GroundOptical Couplers 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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