Load on the Arm
When you attach a camera, valve or other devices to the arm, calculate the weight as the equivalent of the shaft. Then, add this to the weight of the load attached to the shaft, and enter the total weight to the Weight parameter.
Equivalent Weight Formula
When attached to the root of Arm #2: WM=M(LM+L1)2/(L1+L2)2
- WM: equivalent weight
- M: Weight of camera etc.
- L1: length of Arm #1
- L2: length of Arm #2
- LM: distance from rotation center of Joint #2 to center of gravity of the camera etc.
[Example]
Calculates [Weight] parameter when a “1 kg” camera is attached to the end of the LS20-C arm (550 mm away from the rotation center of Joint #2) with a load weight of “1 kg”.
W=1
M=1
L1=350
L2=450
LM=550
WM=1×(550＋350)2/(350＋450)2=1.27
(Round up to two decimal)
W+WM=1+1.27=2.27
Enter “2.27” for the Weight Parameter.
| Symbol | Description |
|---|---|
| a | Shaft |
| b | Weight of the entire camera |
| c | Joint #2 |
| d | Joint #1 |