The IED blocked mode and the IED test and blocked mode can be activated using the LHMI. The yellow Start LED flashes when the device is in the IED blocked or IED test and blocked mode. The green Ready LED flashes to indicate that the IED test and blocked mode is activated. By default, the test mode can only be changed from the LHMI. Activation by remote client is possible, see the technical manual.
Note: The Ready LED also flashes if the IED detects a diagnostic failure. Check the test mode setting and the protection relay's IRF alarm contact status to find the reason of the failure.
The test mode can be used for simulated testing of functions and outputs without providing current inputs. The IED blocked mode can be used to block the physical outputs to the process.
- Select and press
. Figure 1. Entering IED blocked or IED test and blocked mode 
- Select the test mode status with
or 
. Press to confirm the selection.
Note: If the IED blocked or IED test and blocked mode is not cancelled, it remains on and the Start and/or Ready LEDs remain flashing.