Components of the remote control grab electrical control systems
The electrical control system of the remote-control grab is primarily designed to manage the grab's opening and closing actions by controlling the activation of solenoid valves.
The system comprises the following key components:
Battery
Distribution box
Remote control transmitter
Remote control receiver
Solenoid valves for controlling cylinder movements
Additionally, a dedicated battery charger is required to maintain the battery's charge and ensure reliable operation.
Technical Requirements
The electrical control system utilizes wireless remote control grab technology, offering a minimum control distance of 50 meters. Both signal transmission and reception are designed to be highly reliable, even under harsh environmental conditions typical of outdoor port areas. The system is engineered to operate effectively within an ambient temperature range of -10°C to 55°C.
Key electrical specifications:
Battery voltage: 24V DC
Solenoid valve voltage: 24V DC
Important: Before commencing operation, thoroughly inspect all electrical connections and joints. Once verified, close the main power switch and turn on the power control switch to activate the system.
Control Method
The remote controld grab is operated using a button-based control system.
As illustrated in the diagram, the transmitter features a red main power switch on its back. Pushing this switch upward turns the transmitter on, while pushing it downward turns it off. On the front panel, a red indicator light shows the power status, and a green indicator light serves as a low-voltage warning. If both lights begin flashing continuously, it indicates that the transmitter batteries require immediate replacement.
Operating Procedure:
First, push the red button on the back of the transmitter to power it on.
Use the first and second buttons on the front to control the grab.
Button 1 (Momentary/Jog Control): Press and hold this button to continuously open the grab. Releasing the button will immediately stop the opening action.
Button 2 (Latching/Continuous Control): Press this button once to start the continuous opening of the grab. Press it a second time to stop the opening action.
The final two buttons on the transmitter are backup controls. In the event that the primary buttons (1 and 2) malfunction, the wiring can be reconfigured to allow operation using these backup buttons.
The transmitter sends signals to the receiver unit of the remote control grab. Upon receiving a valid command, the receiver's normally open contact closes, completing the circuit and energizing the corresponding solenoid valve. This, in turn, directs hydraulic fluid to activate the grab's opening mechanism. Under ideal conditions with no obstructions, the wireless remote control can achieve an operational distance of up to 100 meters. Indoors or in environments with potential signal interference, the effective control distance is typically no less than 50 meters.
