ABB TruONE ATS Installation And Operating Instruction page 61

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Parameters (continued)
Device Parameters
In-phase Monitor
Time Delays
Enable Off*
On
Synchronization 0*...60 s
Delay
Override S1 0...60 s
Failure (2* s)
Transfer from 0...60 min
S1 to S2 (2* s)
Pre-transfer 0*...300 s
S1 to S2
Center-Off 0*...300 s
Post-transfer 0*...300 s
S1 to S2
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.
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..
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.
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.
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.
61
*Default
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