Mitsubishi Electric MELIPC MI5A1P User Manual page 35

■Momentary power failure or reset from lightning surge noise
A momentary power failure may be detected, or the product may be reset because of the lightning surge noise. As a measure
against the lightning surge noise, connect a low-voltage surge protective device (SPD) as shown below. Using the low-voltage
surge protective device can reduce the influence from the lightning.
AC
E1
Item
Applicable circuits
Protection mode
Maximum continuous voltage used
Maximum discharge current
Precautions
• Separate the ground of the low-voltage surge protective device (E1) from that of a product (E2).
• Select a low-voltage surge protective device so that the power supply voltage of when line voltage is maximum does not
exceed the maximum allowable circuit voltage of the surge absorber.
• Select a low-voltage surge protective device for power supply that complies with IEC 61643-11/JIS C5381-11 and meets
the requirements of the test class "Class Unit".
■Uninterruptible power supply (UPS)
Always use an online power system or line interactive system for the uninterruptible power supply.
For commercial supply method uninterruptible power supply systems, use Mitsubishi FREQUPS FW-J low-capacity series
UPS devices.
Precautions
This product incorporates a PFC circuit, therefore do not use a square wave output uninterruptible power supply.
MELIPC
I/O equipment
E2
Low-voltage surge protective device (SPD)
Description
Single phase 2/3 wire 100 VAC/200 VAC
Voltage to ground, spacing
240 VAC or higher
• Voltage to ground: 10 kA or higher
• Spacing: 5kA or higher
2 PRODUCT INSTALLATION
2.3 Wiring the Power Supply Module
2
33