Question:

Elevator three pieces

Usually said that the elevator three pieces, which is the three pieces? Not that the elevator is the four major space + eight system more

Answer:

Host traction machine control cabinet motherboard and so on
Host, control cabinet, security system? This really do not know
Traction machine (often said that the host or motor), door machine, variable frequency drive (equivalent to the human brain) or control cabinet (including variable frequency drive and control cabinet motherboard)
Usually said that the elevator three pieces, which is the three pieces? Not that the elevator is the four major space + eight system more...

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