Appendix-13
Appendix-4 Notes on Compliance with EC Directives and UL/cUL Standards
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
A
Appendix
EMC Recommendations
Use the following checklist to ensure the inverter is within proper operating ranges and
conditions.
1. The power supply to 3G3MX2 inverters must meet these specifications:
 Voltage fluctuation 10% or less
 Voltage imbalance ±3% or less
 Frequency variation ±4% or less
 Voltage distortion THD = 10% or less
2. Installation measure:
 Use a filter designed for 3G3MX2 inverter. Refer to the instruction of the applicable external
EMC filter.
3. Wiring:
 Shielded wire (screened cable) is required for motor wiring, and the length must be 20 meter
or less.
 If the motor cable length exceeds the value shown above, use output choke to avoid
unexpected problem due to the leakage current from the motor cable.
 The carrier frequency setting must be 2 kHz to satisfy EMC requirements.
 Separate the power input and motor wiring from the signal/process circuit wiring.
4. Environmental conditions-when using a filter, follow these guidelines:
 Ambient temperature: −10 to 50°C (Derating is required when the ambient temperature
exceeds 40°C)
 Humidity: 20 to 90% RH (non-condensing)
 Vibration: 5.9 m/sec2 (0.6 G) 10-55Hz
Location: 1000 meters or less altitude, indoors (no corrosive gas or dust)
Note on Low-voltage Directive
Ensure correct installation and wiring by following the instructions provided in Chapter 2
"Design" of this User's Manual.
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