Industrial robots are composed of three main parts: the robot body, the control system, and the drive system. The electrical control cabinet is the carrier of the robot control system, which is the "brain" of the industrial robot, with rich electronic neurons, responsible for linking the industrial robot to control its work.
Electric control cabinets have different names in the slang of the industrial robot industry. They can be called electrical boxes or control cabinets. Any movement of industrial robots is controlled by a control cabinet. It is an electrical control device that can convert various control signals required by industrial robots into standard industrial control signal outputs. It usually consists of an integrated box and a driving handle (teaching pendant).
Today, let's take a comprehensive look at the uniqueness of this' robot brain '. It is worth mentioning that different brands and models of electrical control cabinets have different characteristics. Some brands of electrical control cabinets require highly integrated circuit boards and drivers for control; Some brands prefer axis computers for control, and the difference between the two is that some electric control cabinets are small and exquisite, while others look more bulky, but in terms of user experience, the difference is not significant.
This article takes the electric control cabinet of our own brand, BORUNTE Robot, as the research object.
▶ Composition of electrical control cabinet:
1. Robot system host: the central processing unit of the control system and the dispatch and command organization.
2. Teaching pendant: The teaching robot's work trajectory and parameter settings, as well as all interactive operations, have an independent storage unit.
3. Operation panel: generally composed of basic components such as buttons or buttons, indicator lights, etc., to complete basic functional operations or start stop.
4. Signal interface (IO module): IO interface that interacts with external devices or workstations.
5. Analog output interface: input and output ports for various states and control commands.
6. Servo module (servo driver): provides driving power for servo motors and controls them to send and receive position commands.
7. Network interface: ① CAN port: achieve multi machine online connection through CAN communication;
②. Ethernet interface: Multiple or single robots can directly communicate with a PC through Ethernet, supporting TCP/IP communication protocol
Discussion.
8. Communication interface: Implement information exchange between robots and other devices, usually with serial interfaces.
▶ Implementation function:
1. Memory function: Storage and memory of machine parameters and operating parameters, storage of motion trajectories, modes, and speeds, and storage and memory of production process-related information.
2. Teaching function: Supports on-site local teaching, offline teaching, etc.
3. Online functions: IO interface, network interface, communication interface, digital interface.
4. Multi-axis servo control function: multi-axis linkage or single action control, speed or acceleration control, dynamic compensation, etc.
5. Security protection function: Customize security zones or freely add sports zone protection functions.
6. Coordinate system functions: joint, absolute (right angle or world), tool, user, and other coordinate systems, among which the tool and user coordinate systems can be customized.
7. Fault diagnosis function: Monitor the system's operating status, self-diagnose, and issue warnings in case of faults.
▶ Front of the electrical control cabinet:
Power switch: After connecting the correct power source externally, turn the switch upwards to start the robot.
Indicator light: displays the current status of the robot, with a green light for normal automatic operation, a red light for alarm status, and a yellow light for stop status.
Emergency stop: External emergency stop button, normally closed signal, pressed to cut off servo enable.
Power input: Connect the correct power source according to the information on the electrical box nameplate.
Electric box nameplate: Consistent with the robot body nameplate, it displays information such as machine name, production number, machine number, production date, voltage, current, power, load, arm span, machine weight, etc.
▶ On the back of the electrical control cabinet:
▶ Teach Pendant
A teaching pendant is a handheld device composed of hardware and software, used to perform many tasks related to operating and industrial robot systems, such as running programs, configuring parameters, modifying robot programs, etc. In a sense, a teaching pendant is a complete computer that is connected to a controller through integrated cables and connectors.