ABB TruONE ATS, Installation And Operating Instruction

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Parameters (continued) *Default
Device Parameters
In-phase Monitor
Enable Off*
On
Synchronization
Delay 0*...60 s
Time Delays
Override S1
Failure
0...60 s
(2* s)
S1 priority: How long the device is waiting S1
recovery before starting transfer sequence to S2.
S2 priority: How long the device is keeping the
load on failed S1 although S2 is already available.
Transfer from
S1 to S2
0…60 min
(2* s) S1 priority: How long the device is keeping the
load on failed S1 after S2 becomes available.
S2 priority: How long the device waits before
transfer sequence back to available S2 begins.
This delay is bypassed by 'Override S1 Failure' in
case of S1 failure..
Pre-transfer
S1 to S2
0*...300 s Enabled only when any digital output is configured
as 'Pre-transfer Signal'.
How long the device is keeping pre-transfer signal
activated before transferring from S1 to S2.
Center-Off 0*...300 s Only delayed transition I-O-II type. How long the
switch is stopped at position O while transferring
from S1 to S2 or from S2 to S1 and the original
source is not completely down.
Center-OFF delay is bypassed in case all phases
are missing from the original source which we are
leaving.
Post-transfer
S1 to S2
0*...300 s Enabled only when any digital output is configured
as 'Pre-transfer Signal'.
How long the device is keeping pre-transfer signal
activated after transferring from S1 to S2.
Continued on the next page