Installation
Manual b maXX
®
BM1000
Document No. 5.07003.04
67
of 174
6
6.13 RFI jumper
Main power isolated from earth:
If the device is supplied from an isolated power (IT power), the RFI jumper must be cut
off. Then the RFI capacities (filter capacitors) will be disconnected from ground to prevent
circuit damage (according to IEC 61800-3) and reduce earth leakage current. Refer to the
following figures for the position of RFI jumper.
Frame 1
(on the top)
Frame 2
(at the right side)
Frame 3
(at the left side)
WARNING
The following may occur, if you disregard these safety notes:
m serious personal injury m death
The danger is: electricity. Parts, which are under tension are perilous.
After applying power to the device, do not cut off the RFI jumper. Therefore, please make
sure that main power has been switched off before cutting the RFI jumper.
The gap discharge may occur when the transient voltage is higher than 1,000V. Besides,
electro-magnetic compatibility of the device will be lower after cutting the RFI jumper.
Do NOT cut the RFI jumper when main power is connected to earth.
The RFI jumper cannot be cut when high voltage tests are performed. The mains power
and motor must be separated if high voltage test is performed and the leakage currents are
too high.
To prevent drive damage, the RFI jumper connected to ground shall be cut off if the device
is installed on an ungrounded power system or a high resistance-grounded (over 30 Ω)
power system or a corner grounded TN system.
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