Test mode is selected through one common parameter via the HMI path . By default, Test mode can only be set locally through LHMI. Test mode is also available via IEC 61850 communication (LD0.LLN0.Mod).
| Test mode | Description | Protection BEH_BLK |
|---|---|---|
| Normal mode | Normal operation | FALSE |
| IED blocked | Protection working as in Normal mode but ACT configuration can be used to block physical outputs to process. Control function commands are blocked. | TRUE |
| IED test | Protection working as in Normal mode but protection functions work in parallel with test parameters. | FALSE |
| IED test and blocked | Protection working as in Normal mode but protection functions work in parallel with test parameters. ACT configuration can be used to block physical outputs to process. Control function commands are blocked. | TRUE |
The mode of all logical nodes located under the CTRL logical device is set with Control mode. Control mode is selected via the HMI or PCM600 path . By default, Control mode can only be set locally through LHMI. Control mode inherits its value from Test mode but Control mode ”On”, “Blocked” and “Off” can also be independently set. Control mode is also available via IEC 61850 communication (CTRL.LLN0.Mod).
| Control mode | Description | Control BEH_BLK |
|---|---|---|
| On | Normal operation | FALSE |
| Blocked | Control function commands blocked | TRUE |
| Off | Control functions disabled | FALSE |
According to IEC 61850, the physical outputs to process should be blocked when the device is set to blocked or test blocked mode. The blocking logic must be implemented in the ACT configuration. In the protection blocking example the main trip from TRPPTRC1 is blocked, and in the control blocking example CBXCBR1 is blocked. Both comply with IEC 61850. In real applications some PTRCs might also be used for signalling purposes (GOOSE) and blocking and interlocking via I/O.