Siemens SINUMERIK 840D sl Manual page 25

DC link adapters are used to forward the DC link. Cross-sections of 35 mm² to 95 mm², max.
240 A, can be connected to the connection terminals.
The wiring is performed using single-wire / fine wire and shielded cables and laid short-circuit
and ground-fault safe.
Minimum size for the ventilation clearances for the two-/multi-row construction
Figure 2-4
For components with a width of 50 to 100 mm, the separation between the top and bottom
row must be at least 300 mm.
For components with a width of 150 to 300 mm, the separation between the top and bottom
row must be at least 500 mm.
Guide for the SINUMERIK 840D sl machine configuring
Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
Ventilation clearance for the two-row construction
Structure of the drive group
2.1 Structure
2-5