In the case of TRBL-19, the output has been shut down due to the shutdown signal received through the external contact.
To clear it, follow these steps:
1) Turn the POWER switch off.
2) Clear the active signal input, and then turn the POWER switch on again.
Note: The polarity of the active signal will be fixed (positive).
For the details, read the user’s manual – chapter of External Control – Control Using Digital Signals – Shutdown.
