Doepke DFA 2-2 사용 설명서 - 페이지 15

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► Operating mode ON

The DFA is switched on and carries out the control commands which are activated either via the signal

inputs. The status LED is permanently illuminated.

► Operating mode AUTO

The DFA is switched on and carries out the control commands which are activated either via the signal

inputs. The status LED is permanently illuminated.

Depending on the setting (see "Setting for attempts at automatic reconnection", p. 12) up to 3

reconnection attempts will be carried out in this mode, each within 15 consecutive seconds after the

RCCB has been tripped. During these 15 second periods the status LED will signal Flash Code 2

(see "Flash Codes", p. 16) to indicate that a reconnection attempt will follow.

Setting for 1 reconnection attempt

If the RCCB has not been switched "ON" after a single reconnection attempt, i.e. if the fault is still pre-

sent in the RCCB's circuit, the DFA will be inhibited. However, if a trip does not occur until 5 seconds

after an automatic reconnection process, then this will be considered to be a new fault that will be

followed after 15 seconds by a new reconnection attempt.

Setting for 3 reconnection attempts

If the RCCB has not been switched "ON" within 5 seconds of the first reconnection attempt, a second

reconnection attempt will take place 15 seconds later, followed – if necessary – by a third attempt

15 seconds later still. If the fault in the RCCB's circuit is still present, then the DFA will be blocked.

If the DFS is inhibited it will not carry out any further switching commands or automatic reconnection

attempts. This will be signalled by Flash Code 3 and the switched relay output. In order to cancel the

inhibition the DFA must be briefly switched off (RESET).

► Operating mode OFF

The DFA is switched off and thus does not carry out any control commands. The status LED is extin-

guished.

This operating mode should be selected

when maintenance work is to be carried out at the distribution in order to prevent the sys-

tem being switched on from a remote location. The fitted RCCB can additionally be equipped

with a lockable restart locking facility.

if the block caused by a failed automatic reconnection is to be

cancelled.