Transformer Panel; Power Cell Panel; Control Panel - YASKAWA FSDrive-MV1000 Instructions Manual

1.4 Component Names and Configuration

◆ Transformer Panel

The transformer panel houses a 3-phase transformer with multiple windings on the secondary side. The secondary
winding of the transformer on the output side differs according to the input voltage as shown below.
2-kV class: Six 3-phase windings
4-kV class: Six 3-phase windings
Each of the windings is connected to a 3-phase input terminal of the Power Cell.
Multiple cooling fans for the transformer panel are mounted in the upper part of the drive panel. Cooled air taken in
through the filters on the front of the transformer panel passes the transformer panel and is expelled into the upper part of
the drive panel.
Note: Some models in which the cooled air from the fronts of both the transformer panel and Power Cell panel through the transformer
panel and is expelled into the upper part of the drive panel.

◆ Power Cell Panel

The output side of the Power Cell Panel houses the following number of Power Cells.
2-kV class: Total of 6 cells (Two for each phase)
4-kV class: Total of 6 cells (Two for each phase)
Multiple cooling fans for the Power Cell panel are mounted in the upper part of the drive panel. Cooled air taken in
through the filters on the front of the Power Cell panel passes the Power Cell fins in the cooling section, flows into the air
duct at the rear of the drive, and is expelled into the upper part of the drive panel.
Each Power Cell comprises a power section and a cell control board (abbreviated to CCB). Each CCB is connected to the
controller in the control panel with an optical fiber cable. The CCB controls PWM output of the Power Cell according to
the references sent from the controller through the optical fiber cable. The CCB has protection functions against
overvoltage, undervoltage, IGBT overheat and other problems, and sends feedback to the controller through the optical
fiber cable.

◆ Control Panel

The control panel houses the following devices.
All external cables except the input and output cables of the main circuit are connected to the control circuit terminal
block.
• Controller and control power supply to control the drive
• MCCB (Molded Case Circuit Breaker)
• Sequence I/O relay
• Peripheral circuits such as an isolation amplifier for analog I/O
• Control circuit terminal block
Note: A 200/220-Vac power supply is required as the power source for the cooling fan and control circuit. (A 380/400/440-Vac power
supply is available as an option.)
■ Boards Comprising the Controller
The controller comprises the multiple boards listed below.
• Control board
• Isolation board
• Current detection resistance board
• Interface board with optical fiber (only for 11-kV class drives)
Power Supply to the Controller
■
The following three types of power supplies are used with the controller.
Refer to Spare Parts on page 174
• 5 V: Control circuit power supply
• 15 V: Analog I/O power supply
±
30
for the power supply model.
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions