Lift gate control system

A lift gate system, comprising:

• a lift gate assembly including an actuator system for actuating a lift gate;
• an interface device for receiving operation information from an operator for controlling the lift gate assembly;
• a main controller device configured for controlling the actuator system, wherein the main controller device comprises:
• a solid state relay switch for selectively directing electrical power to the actuator system;
• a microcontroller configured for controlling the solid state relay switch based on operator commands and based on operational condition of the solid state relay switch, for controlling operation of the lift gate assembly by controlling the relay switch for selectively directing electrical power to the actuator system, wherein the microcontroller is further configured for controlling the operation of the lift gate to fold and unfold a lift platform, and to raise and lower the lift platform;
• an onboard display device configured for displaying status information based on status signals from the microcontroller;
• and
• a support member configured for supporting thereon, and electrically coupling, the solid state relay switch, the microcontroller, and the onboard display device.

A system, comprising:

• an interface device for receiving operation commands for controlling a lift gate assembly including an actuator system for actuating a lift gate;
• a main controller device configured for controlling the actuator system, wherein the main controller device comprises:
• a solid state relay switch for selectively directing electrical power to the actuator system, wherein the solid state relay switch comprises a first field effect transistor (FET) bank, and a second FET bank connected in series with the first FET bank;
• and
• a microcontroller configured for controlling the solid state relay switch based on said operation commands to control operation of the lift gate assembly;
• wherein the microcontroller is configured for detecting an operational failure of the solid state relay switch and turning power to the actuator system OFF in response.