Mitsubishi A2USCPU(S1), User Manual

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8. LOADING AND INSTALLATION
8.8 Precautions when Connecting the Uninterruptible Power Supply (UPS)
Connect the programmable controller system to the uninterruptible power supply (UPS),
while paying attention to the followings.
Use the on-line UPS or line interactive UPS (voltage distortion of 5% or less.)
Alternatively, use the off-line system UPS, i.e., FREQUPS-F series with serial number P or
later (manufactured by Mitsubishi Electric). Example: FW-F10-03.K/0.5K
Do not use the off-line system UPS other than above.