User manual of EC160 elevator intelligent integrated machine Running at slow speed
143
4. Check the grounding
(1) In the following inspection, the resistor between the measuring terminal/parts and PE closes to
infinity.
A. Between R, S, T and PE
B. Between the braking coil and PE
C. Between safety circuit and PE
D. Between door lock circuit and PE
E. Between the control power supply and PE
F. Between the communication circuit and PE
G. Between motor U, V, W and PE
H. Between the rotating circuit of the encoder and PE
I. Between the unit signal terminal of the machine and the power terminal and PE
J. Between the terminal in the inspection circuit and PE
In above inspection, if the resistor is a little small, please check immediately and find the solution.
(2) In the following inspection, the resistor between the measuring terminal/parts and PE closes to
infinitesimal (0~3Ω):
A. Between mains power supply and PE
B. Between the motor contact and PE
C. Between the shield cable of the rotating encoder and PE
D. Between the external metal host of the rotating encoder and PE
E. Between the contact of the machine and PE
F. Between the power contact and PE
G. Between the brake contact and PE
H. Between the control cabinet and door and PE
I. Between the coil end and PE
J. Between the governor and PE
K. Between the car and PE
L. Between the electrical door lock and PE
M. Between the connector of the safety switch and PE
Ensure the connection of the grounding wires in the power supply
meets the national standards before debugging.
7.1.3 Inspection of the encoder assembly
(1) Ensure the fixing of the encoder is tightened enough and the coupling between the encoder
shaft and the outrigger shaft of the master.
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