Mitsubishi Electronics E70 ユーザーズマニュアル

ページ / 214
Appendix 2 EMC Installation Guidelines
MITSUBISHI CNC
172
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 
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
Item Standard 
setting
Remarks 
Output 
Voltage fluctuation
±5%
±5% or less of 24VDC output
Ripple noise
120mV (max.)
Spike noise
500mV (max.)
Output current
――
Refer to the maximum current consumption of the unit in use 
and calculate. 
Output holding time
20ms (min) 
Instantaneous power failure time (AC side)