Robot relay solution
Industrial robots demand extremely high requirements for control precision, response speed, and safety reliability. Relay applications are concentrated in key areas such as joint motion control, safety circuit protection, and end-effector actuation.
Joint Motor Control
Core Requirements: Precise start/stop, forward/reverse control, and high-speed response.
Main Types and Applications:
Electromagnetic Power Relay:
Capable of handling high currents, meeting the drive requirements of joint motors.
Provides reliable start/stop and forward/reverse control for motors.
High-Frequency Solid-State Relay (SSR):
Offers microsecond-level response speed, suitable for high-frequency commutation control.
Used in scenarios with stringent positioning accuracy and high operating frequency requirements.
Safety Circuit Protection
Core Requirements: Ensuring personnel and equipment safety, complying with international safety standards.
Key Requirement: Products must comply with safety standards such as EN ISO 13849.
Main Types and Applications:
Safety Relay / Forced-Guided Contact Relay:
Used for signal processing and actuation of safety devices like emergency stop buttons, safety doors, and light curtains.
Can reliably and forcibly cut off the robot’s main power circuit in situations like an open safety door or triggered emergency stop.
End-Effector Actuation
Core Requirements: Precise and reliable switching and time-delay control.
Main Types and Applications:
Electromagnetic Signal Relay:
Compact size, stable performance.
Provides on/off control for end-effectors such as robot grippers, welding torches, and pneumatic cylinders.
Time-Delay Relay:
Used in scenarios requiring delayed actions for precise timing control.
Typical applications include: delayed welding ignition, delayed gripper clamping/release.
Load and Equipment Protection
Core Requirements: Real-time current monitoring to prevent equipment damage from abnormal conditions.
Main Types and Applications:
Thermal Overload Relay / Electronic Overload Relay:
Continuously monitors the operating current of joint motors and end-effectors.
Cuts off the circuit promptly in case of overload, short circuit, or other faults to protect the equipment.
Special Environment Applications
Core Requirements: Meeting specific operational needs such as spark-free operation and high vibration resistance.
Main Types and Applications:
Solid-State Relay (SSR):
No mechanical contacts, resulting in spark-free operation, suitable for clean rooms, explosive atmospheres.
Excellent vibration resistance, capable of withstanding vibrations from continuous robot motion.
The preferred alternative to traditional electromagnetic relays in such special environments.
