部分电梯调试过程问题描述和处理方法（Part of the elevator debugging process problem description and processing methods）.doc

部分电梯调试过程问题描述和处理方法（Part of the elevator debugging process problem description and processing methods） 1 question Description: Elevator maintenance operation after a period of time will be protected? Problem analysis: motherboard check, fault code is No. 9, check the inverter no data set exception, and the occurrence of time is fixed To solve the problem: check the motherboard repair feedback speed is only 0.11M/S, and set the inspection speed is 0.25M/S. to watch 12.11HZ. U1-02 display 5.23HZ. converter U1-01 display U1-03 display 45A. U1-01 output frequency should be consistent with the feedback frequency of U1-02, but now is not the same, that there are problems. Then check the encoder wiring is correct, try to change the AB phase, U1-01 the output frequency and the feedback frequency U1-02 consistent. The problem in the AB encoder instead. 2 question Description: elevator automatic status can not be closed? Problem analysis: motherboard check, no fault code. Check switch door in place and safety touch switch set normal Problem solving: after checking, it is found that the motherboard TX14 is set to normally closed, changed to normally open, and the problem solved 3 Problem Description: Elevator self-learning after normal operation, run several times after lift frequent DEV or DV3 fault (Yaskawa inverter is IP)? Problem analysis: according to the instructions of the fault should be in the Yaskawa inverter encoder feedback. Problem solving: after the host has been learning, the problem remains the same. In the inspection, it is found that the encoder is not fixed, which results in the phenomenon of pulse dropping in the operation. After a good encoder, the problem is solved after the host has been learning 4 questions Description: Elevator hold down is uplink, motherboard speed is shown as negative downlink instructions. Press down uplink is down, motherboard speed is shown as positive uplink refers to (synchronous motor) Problem analysis: because the synchronous po