14
Functions and features
Installation and Programming manual
4.4
Protection circuit
The outputs are protected against short-circuit and overload (Imax=3.7A) by a protection circuit (circuit
breaker) which operates in the same way as a fuse.
If the protection circuit intervenes, the power supply station will signal the fault and protect the interrupted
line before making three attempts to re-activate it.
• If the fault condition (overload) clears, the output channel voltage will restore to 24V (ON).
• If the fault condition is still present after the third attempt, the power supply station will leave the
output at 0V (ALERT).
The three attempts to re-activate the line will be carried out at 2, 5 and 10 seconds from the start of the
fault.
In the event of a fault, follow the procedure described in paragraph
11.2 “Output protection” fault
.
Figure 6 - OUT1 channel protected by fuse
Note:
The protection circuit will continue to operate even when the PROG jumper is inserted.
O U T 1 O U T 2 O U T 3