Yaskawa YASNAC PC NC Connecting Manual - Manual (Page 28)

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YASNAC PCNC Connecting ManualChapter 1: General
Servo Unit
SGDC-05AJ A 28 10
2.5
SGDC-10AJ A 48 12
SGDC-15AJ A 73 15
SGDC-20AJ A 108 18
SGDC-30AJ A 148 22
SGDC-50AJ A 208 28
Unit Type Total Heat
Generation
(W)
Internal
Heat
Generation
(W)
Minimum
Wind
Velocity for
Cooling
POINT
1. The heat generated by the CNC unit varies depending on the addition
of options. The heat generated by the I/O module varies with I/O
status.
2. Internal heat generation is the heat remaining inside of the enclosure
when the servo unit’s fin is exposed outside of the enclosure, and
when the external air is applied to the fin at greater than 2.5m/s
3. Thermal design of the enclosure to house the servo unit varies with
machine specifications, but is acknowledged to use a value of 70% of
the load factor.