socomec ATys C20, Operating Instructions Manual

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Operation
Controller ATyS
OPERATION
57
SOCOMEC - Réf. : 532 214 C
TEST OFF LOAD (ACCESSIBLE IN AUT / MODES)
It can be activated from:
• operation mode
• ATyS D20 interface
• programming input (TFL) if selected.
This test is made for applications where emergency
source
is typically a genset (priority source must be
source ). This test can be activated, in automatic
mode, changeover switch in position , source
available.
>
Description
• This mode will start and stop remotely genset operation
without load transfer
• The test is not possible during an automatic sequence
>
Keypad activation
After operation mode access, press mode push button
to make the test off load led blinking and validate to
start the sequence.
1 1
1
2
TEST ON LOAD (ACCESSIBLE IN AUT MODE)
It is activated from:
• operation mode
• ATyS D20 interface
• programming input (TOL) if selected.
Gen stopped
Validate
Yes
No
1 2
1 2
Gen ?
Stop Gen ?
start Gen
1 2
1 2
ATI 087 B GB
>
Description:
• This test simulates a loss of priority source situation.
The sequence generates load transfer from priority
source to emergency source after backup source start
up operation (in case of genset). The return sequence
always keeps manual re transfer feature activated (from
priority source availability). All timers are counted down.
>
Keypad activation
After operation mode access, press mode push button
to make test on load led blinking and validate to start a
cycle.
The test is only possible in automatic mode, the chan-
geover switch in priority source position, priority source
being available.
>
Keypad or remote operation
>
Remote activation via specific input
It is also possible to start a test on load remotely with
the programming input TOL if selected.
The cycle is started from contacts closure.
The re-transfer is initiated from contacts opening.
Automatic cycle keeps priority.
1 2
1 2
Start gen relay is closed if source has
priority.
2
The re-transfer from emergency source to
priority source is blocked and only authorized
after manuel retransfer validation (keypad
activation) or terminals opening.
Manual retransfer to validate on keypad.
In retransfer sequence from emergency
source to priority source, the MRT count
down is set to 10 seconds (maximum),
unless a lower value has been programmed.