Yaskawa YASNAC PC NC Maintenance Manual - Manual (Page 112)

The VS-626M5 PC NC Maintenance Manual
4-91
Clearances
Install the VS-626M5 and the VS-656MR5 vertically and allow sufficient
clearances for effective cooling.
1. For the external dimensions and mounting dimensions, refer to
Appendix 2 “Dimensions.”
2. Allowable intake air temperature to the inverter and the con-
verter:
Open chassis type:0
°
C to +45
°
C (32
°
F to 113
°
F)
Heat sink externally cooling type
Inside heat sink:0
°
C to +45
°
C (32
°
F to 113
°
F)
Inside unit: 0
°
C to +55
°
C (32
°
F to 131
°
F)
3. Near the heat sink, cooling air speed should be 2.5m/s for effec-
tive cooling (for external cooling type heat sink). See figure
below.
Figure 4.5: Clearances (external cooling type heat sink)
5 mm (0.20 inches)
or more
120 mm (4.72 inches)
or more
Converter
Inverter
Max. 70 mm
(2.76 inches)
Heat Sink
(a) Front View (b) Side View
Air
Air
120 mm (4.72 inches)
or more