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MDS-D/DH Series Specifications Manual
Appendix 3-1 Compliance to EC Directives
Appendix 3 - 3
(2) Environment
Use the units under an Overvoltage Category III (MDS-DH)/II (MDS-D) and Pollution Class of 2 or less
environment as stipulated in IEC60664.
(a) To adjust the units to the Overvoltage Category II, insert an isolating transformer of the star connection
complying with EN or IEC standard in the input of the power supply unit.
(b) To adjust the units to the Pollution Class of 2, install the units in a control panel having a structure (IP54
or higher) in which water, oil, carbon or dust cannot enter.
Unit
Motor
(3) Power supply
[1] Use the power supply and servo/spindle drive unit under an Overvoltage Category III (MDS-DH)/
II (MDS-D) as stipulated in IEC60664.
[2] Earth the PE terminal of the units to the neutral point of the star connection.
[3] Do not omit the circuit breaker and electromagnetic contactor.
(4) Earthing
[1] To prevent electric shocks, always connect the servo/spindle drive unit protective earth (PE) terminal
(terminal with mark) to the protective earth (PE) on the control panel.
[2] When connecting the earthing wire to the protective earth (PE) terminal, do not tighten the wire
terminals together. Always connect one wire to one terminal.
(5) Wiring
[1] Always use crimp terminals with insulation tubes so that the connected wire does not contact the
neighboring terminals.
[2] Do not connect the wires directly.
[3] Always install the power supply unit and servo/spindle drive unit on the metal panel.
During operation Storage During transportation
Ambient temperature 0°C to 55°C -15°C to 70°C -15°C to 70°C
Humidity 90%RH or less 90%RH or less 90%RH or less
Altitude 1000m or less 1000m or less 13000m or less
During operation Storage During transportation
Ambient temperature 0°C to 40°C -15°C to 70°C -15°C to 70°C
Humidity 80%RH or less 90%RH or less 90%RH or less
Altitude 1000m or less 1000m or less 13000m or less
PE terminal PE terminal
Crimp terminal
Insulation tube
Wire