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MITSUBISHI CNC
Appendix 2 EMC Installation Guidelines
Appendix 2.6.4 Selection of Stabilized Power Supply
Consider the following characteristics when selecting the stabilized power supply (prepared by machine manufacturer).
Use a power supply that complies with CE Marking or that follows the safety standards given below.
Stabilized power supply selection items
Item
Voltage fluctuation
Output
Ripple noise
Spike noise
Output current
Output holding time
Standards
Safety Standards: UL1950, CSA C22.2 No. 234 approved, IEC950 compliant
Noise Terminal Voltage: FCC Class A, VCCI-Class A
High Harmonics Current Restrictions: IEC61000-3-2
206
Standard setting
± 5%
± 5% or less of 24VDC output
120mV (max.)
500mV (max.)
Refer to the maximum current consumption of the unit in use
――
and calculate.
20ms (min)
Instantaneous power failure time (AC side)
Remarks
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