(1)For a better surge absorbing effect, the wiring shown by heavy line
must be as short as possible.
Wire Size: The wire diameter must be 2 mm
Wire length: The sum of the length (a) of the wire for the
connection of surge–absorbing element 1 and
that (b) of surge–absorbing element 2 must be 2
m or less.
(2)If conducting dielectric strength tests by applying overvoltages (1000
VAC and 1500 VAC) to the power line, remove surge–absorbing
element 2. Otherwise, the overvoltages would activate the element.
(3)The nonfuse breaker (5A) is required to protect the line when a surge
voltage exceeding the capacity of the surge–absorbing elements is
applied and the surge–absorbing elements are short–circuited.
(4)Because no current flows through surge–absorbing elements 1 and 2
during normal operation, the nonfuse breaker (5A) can be shared by
other electric devices on the machine. It can be used with the control
power supply of the servo unit power supply module or with the power
supply for the fan motor of the spindle motor.