socomec ATyS Série Notice D'utilisation page 117

7.3. Programming (cont.)
7.3.3. parameters characteristics (cont.)
Inputs / Outputs Menu
1 2
• Output:
1
S1A, S2A: Source or source
1 2
led source & ).
LS: Load shedding relay. LS timer corresponds to time available to disconnect the shed loads. The relay is activated before
permutation on standby network according to LS timer. The relay is de-activated after retransfer on mains network and LS timer
countdown.
In case of LS function selection, it is required to configure associated LS timer.
Output Function
1 2 1 2
S1A, S2A, LS
1 2 1 2
* In case of DTT variable configuration below LS, LS will be automatically set to DTT value.
7.3.3-3
Example: LS configuration
(output relay ou1, 3 seconds)
1 2
1 2
7.3.3-4
load shedding cycle
DTT timer
LS timer
7.3.3-5
LS AC II
6s 6e
(cont.)
2
available. Output activated as soon as source
Priority source -
emergency source
transfer
Position II (emergency) AC activation
LS relay Activation
Load shedding output
7. opEratIoN atyS 6s and 6e
1 2
or is considered available (similar to front
Default Value
0 to 60 s (≤ DTT)*
Sources priority can not be modified when LS is
affected to any output.
Load shedding feature can not be selected when
priority source = source
Emergency source -
priority source
transfer
The output is de-activated in case of loss of
power. It may then be required to put in parrallel
with the load shedding ouptut relay, position 2
auxiliary contact. This would avoid taking back the load in
case of loss of emergency source in emergency position.
ATyS 3e, 6e, 6s - Ref.: 531 848 G GB
Setting range
3 s
2
.
LS timer
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