M2L 3000 Series VFD
136
Voltage and current sensed by each of the cells is combined to produce the motor
voltage and current used by the motor control algorithm.
Power Cell Back Panel
A Power Cell Back Panel is a fiberglass panel in the Inverter. There is one behind
each column of Power Cells. It provides the electrical connections for the Power
Cells and provides the path for the air flow from the Power Cells to the air plenum.
The Isolating CTs are mounted on the back side of the Power Cell Back Panel.
Power FOB
Power Fiber Optic Boards are boards in the Card Cage that have multiple fiber optic
interfaces. They communicate with the Power Cells.
Precharge Board
The Precharge Board contains Medium Voltage relays, Ground Fault sensing cir-
cuitry, and Look Ahead sensing circuitry. It is in the Inverter. The Medium Voltage
relays close to connect the Precharge Resistors to the two DC Bus Bars. The
Ground Fault sensing circuitry detects ground fault currents. The Look Ahead sens-
ing circuitry detects the voltage applied to the 2-Position DC Landing Pad.
Precharge Board Cover
The Precharge Board Cover is a sheet metal cover for the Precharge Board. It pro-
tects the components on the board from physical damage and acts as a shield for
electrical noise.
Precharge Resistor
The Precharge Resistors are high-wattage resistors. They are in the Inverter. They
the limit the inrush current into the Power Cell’s capacitors when Medium Voltage
DC is first applied to the 2-Position DC Landing Pad. Once the cell’s capacitors are
charged, the Precharge Resistors are bypassed by the Main Contactor.
Rectifier Module
A Rectifier Module is a metal (box?, tray?) in the Converter that contains Dual Diode
Modules, heatsink, and fuses. It converts a three-phase, Medium Voltage AC input
to a Medium Voltage DC output.
SD Card
An SD Card is a removable, flash memory, electronic storage device. An industrial-
grade SD Card is installed in an SD Card socket on the Computer Card. The SD
Card stores the drive’s configuration parameters and event log.
Shunt Trip Relay
The Shunt Trip Relay is a plug-in, single pole, double throw relay with a status indi-
cator light. It is in the Low Voltage Section of the Inverter. It interposes a 24 VDC re-
lay on the Computer Card in series with a customer-supplied switch to the shunt trip
input on the customer’s circuit breaker that feeds the drive.
Snubber Assembly
The Snubber Assembly is a circuit board that contains high-wattage resistors, high-
voltage and current diodes, and high-energy capacitors to create an RCD (resistor,
capacitor, diode) snubber circuit. The Snubber Assemblies are in the Rectifier Mod-
ules in the Converter. The snubber circuits protect the diodes in the Rectifier Mod-
ules from voltage transients.
Surge Arrestor
Surge Arrestors are mounted directly to the inputs on the primary side of the 18-
Pulse Transformer in the Converter. They protect the drive from lightning-induced
Содержание M2L 3000
Страница 2: ...M2L 3000 Series VFD 2...
Страница 6: ...M2L 3000 Series VFD 6...
Страница 10: ...M2L 3000 Series VFD 10...
Страница 14: ...M2L 3000 Series VFD 14 Part Number Definitions UL Applicable Base Part Numbers...
Страница 15: ...1 Introduction 15 NOTE Only the 260A and 300A models are presently available as UL listed models...
Страница 16: ...M2L 3000 Series VFD 16...
Страница 27: ...3 Installation 27 Wiring Schematics Figure 1 MV Drive System Layout...
Страница 28: ...M2L 3000 Series VFD 28 Figure 2 Converter Power and Control Circuit Portions...
Страница 29: ...3 Installation 29 Figure 3 Inverter Power and Control Circuit Portions...
Страница 40: ...M2L 3000 Series VFD 40...
Страница 72: ...M2L 3000 Series VFD 72...
Страница 124: ...M2L 3000 Series VFD 124...
Страница 126: ...M2L 3000 Series VFD 126...
Страница 127: ...References 127 References Placeholder for text with left side label...
Страница 128: ...M2L 3000 Series VFD 128...
Страница 132: ...M2L 3000 Series VFD 132...
Страница 139: ...Revision History 139 Revision History Revision Date ECO Description 00 December 15 2017 E5306 Initial Release...