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Appendix 4 Precautions for Compliance to UL/c-UL Standards
MITSUBISHI CNC
184
Observe the following matters to comply with UL/c-UL Standards.
Refer to "Instruction Manual for Compliance with UL/c-UL Standard"(BNP-B2429-003) for details.
(1) Selection of external 24VDC power supply unit (The unit shall be prepared by the machine tool builder.)
This NC system complies with the UL Standards on the condition that the stabilized power supply unit supplying
24VDC to each unit is a UL-approved part.
Use a UL-approved part for the stabilized power supply unit supplying 24VDC to each unit.
(2) Unit ambient temperature
This NC system complies with the UL Standards on the condition that the unit is used at a temperature less than the
maximum ambient temperature given in "Environment Conditions" section. Make sure that the maximum ambient
temperature of each unit does not exceed the temperature given in "Environment Conditions" section.