Machine Room Slow-Speed Car Operation
Inspect according to the previous chapters, confirm the parameter setting, and adjust machine room inspection operation.
(1) necessary inspection before adjust:(installation team take slow-speed car pilot operation before hanging iron ropes)
a. Make sure no people in well and car, hall doors and car doors all closed.
(2) Press up or down button in control cabinet, operate car in emergency operation:
In case of over-speedy, first press downward slow-speed car button if car is on top floor; if car is on ground floor, then first press upward slow-speed car button. Check whether the high/slow-speed car is normal.
a. When elevator operating, main board monitor and frequency inverter display current operation speed, and upward speed is positive number, downward speed is negative number.
b. Inspect the signal receiving and output of frequency inverter at the same time.
c. If elevator vibrate, encoder and encoder wires need to be checked, or restudy original point.
d. If elevator operation direction is not consistent with the button direction, (asynchronous) change motor
phase after power off, and exchange FWD and REV wire of encoder, and meanwhile change A+, A-,
B+, B-. Then, power on to check elevator operation.
e. Check if the speed displayed on LCD operator is consistent with the setting speed, if differs too much,
check the parameter setting.