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Appendix 3 Parts for EMC Measures
Appendix 3.4 Selection of Stabilized Power supply
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Appendix 3.4 Selection of Stabilized Power Supply
Consider the following characteristics when selecting the stabilized power supply. (prepared by
customer)
Use a power supply that complies with CE Marking or that follows the standards given below.
Stabilized power supply selection items
Item Conditions
Voltage fluctuation ±5% ±5% or less of 24VDC output
Ripple noise Max. 120mV ±5% or less of 24VDC output
Output
fluctuation
Spike noise Max. 500mV
Output current — Refer to this manual
Output holding time Min. 20ms Instantaneous off time
Standards
Safety Standards : UL1950, CSA C22.2 No. 234 approved, IEC950 compliant
Noise Terminal Voltage : FCC Class A, VCCI-1 Class
High Harmonics Current Restrictions : IEC1000-3-2