The following are the matching suggestions for stage electric hoists and control boxes: In terms of performance matching - **Power matching**: Select the control box according to the motor power of the stage electric hoist. Generally, the rated power of the control box should be slightly greater than the maximum power of the electric hoist to ensure that the control box can stably supply power to the electric hoist, avoiding problems such as frequent activation of overload protection or overheating and damage of control box components. For example, for a 3kW stage electric hoist, a control box with a rated power of 4kW or 5kW can be selected. - **Voltage and current**: Ensure that the voltage and current parameters output by the control box are consistent with the requirements of the electric hoist. Common working voltages of stage electric hoists include 220V, 380V, etc., and the currents also have different specifications. The control box should be selected strictly in accordance with the nameplate parameters of the electric hoist to prevent the electric hoist from malfunctioning or even being damaged due to voltage and current mismatch. - **Control function matching**: If the stage electric hoist needs to achieve functions such as single - unit independent control, multi - unit synchronous control, and precise positioning, the control box should be equipped with corresponding single - control, group - control functions, and high - precision positioning control modules. For example, in large - scale stage performances, if multiple electric hoists need to operate in coordination to lift and lower large - scale scenery, a control box with group - control function and precise synchronization should be selected. In terms of safety functions - **Overload protection**: The control box should be equipped with an overload protection device that matches the rated load of the electric hoist. When the weight lifted by the electric hoist exceeds the set value, it can cut off the power supply in a timely manner to prevent the electric hoist from being damaged due to overload and avoid the occurrence of safety accidents. - **Limit protection**: Whether it is the upper limit or the lower limit, the control box should effectively cooperate with the limit switch of the electric hoist. When the electric hoist reaches the set upper and lower limit positions, the control box can immediately stop the operation of the motor to ensure the safety of equipment and personnel. For example, when installing lighting equipment above the stage, by accurately setting the limit, the electric hoist can be prevented from rising too high and colliding with other facilities. - **Emergency braking**: The control box must be equipped with an emergency braking button, and it is necessary to ensure that the emergency braking function can quickly cut off the power supply of the electric hoist. In case of sudden dangerous situations, the operator can press the button in a timely manner to make the electric hoist stop running immediately. In terms of environmental adaptability - **Protection level**: If the stage electric hoist is installed outdoors or in a relatively harsh environment, the protection level of the control box should be adapted accordingly. For example, in an environment with dust and water vapor, the control box should have a protection level of IP54 or higher to prevent dust and water from entering the interior of the control box and affecting the normal operation of electrical components. - **Temperature adaptability**: Select a control box with a suitable temperature adaptation range according to the climatic conditions of the area where the stage is located. In a high - temperature environment, the control box should have good heat - dissipation performance; in a low - temperature environment, it is necessary to consider whether the electrical components in the control box can start and operate normally. In terms of compatibility and expandability - **Communication interface**: If the stage electric hoist needs to be linked with other equipment on the stage (such as lighting control systems, audio control systems, etc.), the control box should be equipped with corresponding communication interfaces, such as RS485, CAN bus, etc., to achieve interconnection and collaborative work between devices. - **Expandability**: Considering the possible future upgrade and renovation needs of the stage, the control box should have a certain degree of expandability. For example, reserve a certain number of input and output ports to facilitate increasing the number of electric hoists or connecting other control devices. In terms of operation convenience - **Operation interface**: The operation interface of the control box should be simple and clear, with a reasonable layout of buttons and clear markings. For control boxes with multiple control modes, easy - to - operate switching buttons should be set to facilitate the operator to quickly switch between single - control, group - control and other modes according to actual needs. - **Remote control**: To facilitate the operator to control from different positions on the stage, a control box with a wireless remote - control function can be selected. The effective distance of the wireless remote control should meet the actual use requirements of the stage, and the signal transmission should be stable with strong anti - interference ability.