Troubleshooting the “robot no open mold signal” error (also known as the “open mold” signal) on the Hilectro G1000 HDSE robot series. A technician from Haitian Vietnam outlines the three main causes for this issue and their respective solutions.
First, users should verify the mold-open signal on the injection molding machine. If the machine has output the signal but the robot still reports an error, it is necessary to inspect the open-mold relay (1:03). The most common cause is that the signal from the machine is not reaching the relay due to a loose wire at pin A54 on the circuit board. Tightening the signal wires typically resolves this issue (1:23).
If the relay still does not light up after tightening the connection, the next step is to inspect the wiring from the board to the relay; if the wiring is intact, the relay itself is likely faulty and needs to be replaced (1:49). The third scenario occurs when the relay is lit but the robot still does not receive the signal. In this case, the technician instructs to check for continuity between wire number 4 and wire number 11. The issue may be caused by loose relay contacts or a broken wire, requiring either tightening the contacts or replacing the wire to ensure a secure connection (2:15).
Finally, after completing the inspection and repairs, the user should test the robot in automatic mode by pressing the green button twice (2:38). Once the robot operates normally, the error is successfully resolved. This guide serves as a practical resource for injection molding machine operators to quickly troubleshoot and fix common issues on the factory floor.