Read First; Check The Product - Toshiba MCR-2550 Instruction Manual

1. Read first

This option is a unit to limit an inrush current to an inverter when DC power (including a
converter output) is applied to the inverter.

■ Check the product

Before using the product you have purchased, check to make sure that it is exactly what you
ordered.
■ Notes on the application
This option is needed when connecting a DC power supply to the inverter VF-AS1 and VF-PS1
(PA/+ and PC/- terminals).
Note 1: An optional initial charger MCR-2550 is needed for middle- and large-capacity VF-AS1
and VF-PS1 models.
Refer to Inverter model on page 5.
For 75kW and larger in 200V class and 132kW and larger in 400V class, MCR-2550 are
needed parallel connection.
Refer to Section 2.2 "Parallel connection for large-capacity inverter ".
Note 2: The inverter's cooling fans need to change the connection for large-capacity VF-AS1
and VF-PS1 models.
Refer to Section 3 "Power supply connection for inverter's cooling fan ".
Note 3: A DC reactor does not need to be connected to the inverter when connecting a DC
power supply.
Set the inverter parameter f608 to 0, input phase failure detection mode selection is
disabled.
Select the inverter form (The form end is "- A5") of the DC power supply specification
(no DC reactor) when you use the inverter of 355kW or more. Refer to Inverter model on
page 6.
■ Installation environment
・Do not install in any location of high temperature, high humidity, moisture condensation and
freezing.
・Avoid locations where there is exposure to water and/or where there may be large amounts of
dust and metallic fragments.
・Do not install the option where there are gases that corrode metal or solvents that adversely
affect plastic.
・Operate in areas where ambient temperature ranges from -10°C to 50°C.
・Install the option in a well-ventilated indoor place and mount it on a flat metal plate in portrait
orientation.
Rating Nameplate
Unit Type-Form
Rated Voltage & Current
Application
Manufacturing Lot No.
3
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