Yaskawa MEMOCON GL120 - Manual (Page 79)

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4.2 Power Supply Modules
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6. Filter Ground Terminal (AC Modules: ACG, DC Modules: DCG)
The filter ground terminal is used to ground the input line filter built inside Power Supply
Module. This terminal is short-circuited with protective ground terminal when the Power
Supply Module is shipped. Normally, use as it is.
Caution If a current leakage occurs from the filter ground terminal causes problems, remove the short
piece from between the filter ground terminal and the protective ground terminal. This will
render the input line filter inside the Power Supply Module ineffective. Make sure to insert
either a noise filter or a insulation transformer in the power supply circuit to the Power Supply
Module to increase noise resistance.
7. Built-in Fuse
1) The fuse inside a Power Supply Module is to prevent the Power Supply Module from
damage which may occur in the following causes:
a) External causes: For example, when an over-voltage is applied to the field wiring ter-
minals of Power Supply Module.
b) Internal causes: For example, when foreign matter such as chips happen to be pres-
ent inside a Power Supply Module, thereby short-circuiting internal
circuits.
2) When the built-in fuse burns out, the “POWER” indicator of Power Supply Module will go
out. If the fuse burns out, eliminate the cause of fuse breakage and replace it with a spare
Power Supply Module.
Caution Do not replace the built-in fuses of the Power Supply Modules.
If the built-in fuses are replaced by anyone other than a Yaskawa-approved technician, a
failure or malfunction may occur in the Power Supply Modules.
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