The Control line setting defines which of the initiation signals are protection start and trip signals and which are not. With this setting, the user can distinguish the blocking signals from the protection signals. The Control line setting is a bit mask, that is, the lowest bit controls the INIT_1 line and the highest bit the INIT_6 line. Some example combinations of the Control line setting are as follows:
| Control line setting | INIT_1 | INIT_2 DEL_INIT_2 | INIT_3 DEL_INIT_3 | INIT_4 DEL_INIT_4 | INIT_5 | INIT_6 |
|---|---|---|---|---|---|---|
| 0 | other | other | other | other | other | other |
| 1 | prot | other | other | other | other | other |
| 2 | other | prot | other | other | other | other |
| 3 | prot | prot | other | other | other | other |
| 4 | other | other | prot | other | other | other |
| 5 | prot | other | prot | other | other | other |
| ...63 | prot | prot | prot | prot | prot | prot |
| prot = | protection signal |
| other = | non-protection signal |
When the corresponding bit or bits in both the Control line setting and the INIT_X line are TRUE:
- The CLOSE_CB output is blocked until the protection is reset
- If the INIT_X line defined as the protection signal is activated during the discrimination time, the AR function goes to lockout
- If the INIT_X line defined as the protection signal stays active longer than the time set by the Max trip time setting, the AR function goes to lockout (long trip)
- The UNSUC_RECL output is activated after a pre-defined two minutes (alarming earth-fault).