Elevator debugging process(d)

1.1.4 Ground Inspection
1) Check the following terminals and ground terminal PE infinite resistance between whether, if small please check the reason.
a) Power side R, S, T and the PE resistance.
b) Supply-side U, V, W and PE resistance.
c) Motherboard resistance between 24V and PE.
d) the voltage of the encoder, A, B, PGM and the PE resistance.
e) the motor side of the U, V, W and PE resistance.
f) positive and negative bus terminal and the PE resistance.
g) security, door locks, repair loop resistance between terminals and PE.
2) Check the elevator test tool so the electrical components of the ground terminal and the control cabinet PE ground terminal of the power line between the resistance should be as small as possible, if too large check immediately.