Automatic sequences
MANUAL MODE / AUTOMATIC MODE
>
Manual mode - Automatic mode
permutation/power supply reappearance
• As soon as the selector switch is switched to auto-
matic, the automatic mode is active
• Voltages and frequencies are verified to define new
stable position of the changeover switch
• The same table can be taken into account after
complete power supply loss (the product must be
completely discharged to reset = 3 minutes).
>
New stable position of the changeover switch
Changeover switch Sources availability
initial position
Priority source
Priority source available,
emergency source available or unavailable
Priority source
Priority source unavailable for MFT time period,
emergency source available or unavailable
Emergency source
Emergency source available,
priority source unavailable
Emergency source
Emergency source available,
priority source available for MRT time period
Position 0
Priority source available,
emergency source unavailable
Position 0
Priority source available,
emergency source unavailable
Position 0
Priority source unavailable,
emergency source available
Position 0
Priority source unavailable,
emergency source unavailable
The switch immediately transfers to new stable position as soon as the keyswitch is turned from
Manual to Automatic mode or as soon as Power comes back.
LOSS OF PRIORITY SOURCE AUTOMATIC SEQUENCE
This sequence is started as soon as the switch is in
automatic mode and in priority position (position I -
source
).
1
• source
1
is available
• transfer switch is in position I
• source
2
is available or unavailable
>
Available source
Source being within programmed voltage and frequency
settings, phases rotation being correct.
SOCOMEC - Réf. : 532 211 F
Automatic Transfer Switch ATyS
Refer to timer menus for MFT, MRT or DTT timers
definition.
New position
Priority source
Emergency source. If emergency source
unavailable start emergency source first and wait
for DTT timer period before transfer
Emergency source
Priority source
Priority source
Priority source
Emergency source
No action (because no supply).
When supply becomes available transfer to
available source or emergency source
>
Specific feature: remote transfer control
It is possible to transfer from main source to emergency
source before DTT finishes up. If it is setup to its maxi-
mum values (60s), it is possible to allow transfer closing
terminals 207-208 (CTS).
OPERATION
107