Slewing Limit Switch With Potentiometer For Load Moment Indicator
Sensor
Function
Use DXZ limit switch to limit the rotating angle of tower crane to
avoid power cables damaged by over twist.
Working principle
Pinion on DXZ limit input shaft is engaged with slewing ring, DXZ
limit switch records the rotating angle of crane. When the crane
rotates to its slewing limit angle, relative contact of limit
switch change over with the help of corresponding cam, then slewing
movement is stopped
Adjusting
Turn the tower crane to its original direction of jib, with this
direction there is no twist of power cables.
a. Adjusting should be performed with no load on the tower crane.
Before adjusting, press down the contacts(WK) by finger to check
which one is for left control and which one is for right
b Clockwise to 540(1. 5 times), according to the 3. 2. I program
and adjust the adjusting shaft(4Z), Press the cam(4T) down the
micro switch (4WK) to switch it instantaneously, then tighten the
M5 nut
c. Turn counterclockwise 1080(3 laps), press the 3. 2. 1 pro-gram,
and adjust the adjusting shaft(1Z)so that the cam(1T)presses down
the micros witch (1WK)to make it instantaneously switched and then
tighten the M5 nut
d. Verification: turn the crane left/right to verify if the setting
of slewing limit switch is correct
Parameter
| Working Temperature | -25 ℃ ~ + 40 ℃ |
| Working humidity | ≤90% |
| Transmission ratio i | 1:13 ~ 960 |
| Repeat positioning accuracy | The transfer error of the memory cam ≤0.3 ° |
| Rated voltage | AC 24V ~ 250V DC 24V ~ 220V |
| Rated current | 0.4A ~ 6A |
| Control circuit | 1 ~ 4 for standard circuits, can be increased to 5 ~ 6 according to users |
| IP level | IP55 |
