What are the differences between the control system of Marine elevator and land elevator?

What are the differences between the control system of Marine elevator and land elevator?
(1) Differences in control functions
Maintenance and operation test requirements of Marine elevator:
The floor door can be opened to run, the car door can be opened to run, the safety door can be opened to run, and the overload can be run.
(2) Electromagnetic compatibility design
The elevator is a large-capacity electrical appliance that is frequently started, which will inevitably produce electromagnetic interference. If it is not controlled, its electronic radiation will affect other electronic equipment on the ship. Light can affect the accuracy of the product, heavy can make the equipment can not work normally. In addition, the elevator should not be affected by electromagnetic radiation generated by other electronic equipment, especially the safety circuit and control signal circuit of the elevator should take reliable isolation measures. In the whole ladder design, electromagnetic compatibility design schemes such as shielding design, grounding design, filtering design and isolation design are reasonably used to minimize or even eliminate electromagnetic interference and avoid the mutual influence between the ship’s electrical systems during normal use.
Through the above analysis, it can be seen that the technical design of Marine elevator is mainly carried out for the complex environment of rivers and seas in which it is located. Among various factors, the biggest impact on the equipment is the sway and heave of the ship under the action of waves during navigation. Therefore, in the design process of Marine elevator, in addition to the necessary system simulation using relevant computer software, In the product design, it should also consider the use of sea state simulator to carry out targeted anti-rocking vibration test.