Notes On Using Drives; Selection; Installation - YASKAWA FSDrive-MV1000 Parameter Manual

i.3 Notes on Using Drives
i.3

Notes on Using Drives

◆ Selection

Power Supply Capacity
■
Select a main circuit power supply with a capacity larger than that of the drive to be connected, considering the power
factor and efficiency. When connecting multiple drives to a single power supply, select a power supply with a capacity
larger than the sum of the power required by all the drives to be connected. Even when the power supply has sufficient
capacity, the power supply voltage may drop when the power is turned on, causing malfunction of connected devices if
the power supply has a large power impedance.
Drive Capacity
■
When running multiple induction motors in parallel using a single drive, the capacity of the drive should be larger than
1.1 times the total motor rated current.
■ Emergency Stop
When the drive faults out, a protective function is activated and drive output is shut off. This, however, does not stop the
motor immediately. Some type of mechanical brake may be needed if it is necessary to halt the motor faster than the Fast
Stop function is able to.

◆ Installation

■ Ambient Environment
Keep the drive in a clean environment that is free from airborne oil mist, corrosive gas, flammable gas, lint and dust.
Install the fan cover at the top of the panel before starting operation. Any modification to the outside of the panel cooling
fan, such as connecting air exhaust duct, may reduce air flow for cooling and cause overheating and faults. Do not use air
exhaust duct.
■ Operating Environment
When the power to the drive is turned back on after it has been stopped for a long time, for example for periodical
inspection, electrical components inside dry-type transformers and Power Cell may be subject to condensation depending
on the temperature and humidity of the switch room. This condensation will reduce insulation and cause unanticipated
accidents (e.g. accidents due to short circuits). You are recommended to install a dehumidifier in the switch room.
Drive Storage
■
When storing the drive as is in a storage facility or in the installed state, observe the following points to maintain its
reliability.
• Short term storage of the drive
Short term storage refers to cases where the drive is stored for up to one month after unpacking or up to three months
after shipping. Secure a storage environment that satisfies the conditions cited for the drive's environmental
specification. Note that an ambient temperature of up to 60°C is acceptable.
• Long term storage of the drive
Long term storage refers to cases where the drive is stored for more than one month after unpacking or more than three
months after shipping. Contact Yaskawa if long term storage is required. Note that an ambient temperature of up to
50°C is acceptable.
• Store the spare parts without unpacking them. For details, refer to the storage method described in the instruction
manual.
Compliance with Local Laws
■
Please comply with the law of the relevant country when you install the drive panel. For details, contact your Yaskawa
representative.
12 YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide