ABB TruONE ATS Installation And Operating Instruction page 62

Automatic transfer switches
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62
Tr u O N E ® AT S , I N S TA L L AT I O N A N D O P E R AT I N G I N S T R U C T I O N
Parameters (continued)
Device Parameters (continued)
Time Delays (continued)
Override S2
0...60 s
Failure
(2* s)
Transfer from
0...120 min
S2 to S1
(2* s)
Pre-transfer
0*...300 s
S2 to S1
Post-transfer
0*...300 s
S2 to S1
Generator Stop 0...60 min
(5* min)
Load Shed
0*...60 s
Elevator Pre-
0*...60 s
signal S1 to S2
Elevator Post-
0*...60 s
signal S1 to S2
Elevator Pre-
0*...60 s
signal S2 to S1
Elevator Post-
0*...60 s
signal S2 to S1
S1 priority: How long the device is keeping the
load on failed S2 although S1 is already available.
S2 priority: How long the device is waiting S2
recovery before starting transfer sequence to S1.
S1 priority: How long the device waits before
transfer sequence back to available S1 begins.
This delay is overridden by 'Override S2 Failure' in
case of S2 failure.
S2 priority: How long the device is keeping the
load on failed S2 although S1 is already available.
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 S2 to S1.
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 S2 to S1.
Enabled only when generator is in use.
Generator cooling time, how long the device is
keeping the generator running without load after
returning to priority source.
Enabled only when any digital output is configured
as 'Load Shed'.
How long before the transfer from priority to non-
priority source the device activates load shed
signal.
Enabled only when any digital output is configured
as 'Elevator pre-signal'.
How long the device is keeping pre-signal signal
activated before transferring from S1 to S2.
Enabled only when any digital output is configured
as 'Elevator pre-signal'.
How long the device is keeping pre-signal signal
activated after transferring from S1 to S2.
Enabled only when any digital output is configured
as 'Elevator pre-signal'.
How long the device is keeping pre-signal signal
activated before transferring from S2 to S1.
Enabled only when any digital output is configured
as 'Elevator pre-signal'.
How long the device is keeping pre-signal signal
activated after transferring from S2 to S1.
*Default
Continued on the next page

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