socomec ATyS C55 - Timers List

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ATySController C55/65 - 549866C - SOCOMEC
Annex 16 - 2. Timers list
For more details on timer use see annexe "Annex 16 - 5. Operating sequences", page 96.
Note: please note that the number of timers available on C55 and C65 are not the same.
These options can be congured in the Parameters / Timers menu:
OPERATION TIMERS
TRIGRAM
(ECS)
TIMER DESCRIPTION
SELECTABLE
RANGE
BY
DEFAULT
1FT S1 FAILURE TIMER (s)
Source 1 Failure Timer:
When source 1 is considered lost, 1FT is started. If source 1 is considered
restored before the end of 1FT, the changeover sequence will not be
engaged.
0-60sec 3sec
1RT S1 RETURN TIMER (s)
Source 1 Return Timer:
When source 1 returns, 1RT is started. At the end of 1RT, source 1 is then
considered to be present.
Should source 1 disappear before the end of 1RT, the changeover will
not be carried out. In case the alternate source disappears during 1RT, a
dynamic 3 second delay will override the 1RT time setting value.
NOTE: this timer is only available if source 1 is a Utility, it is replaced by
AVAILABILITY timer 1AT if source is a genset.
0-3600sec 180sec
2FT S2 FAILURE TIMER (s)
Source 2 Failure Timer:
When source 2 is lost, 2FT is started. If source 2 is restored before the end
of 2FT, the changeover sequence is not started.
0-60sec 3sec
2RT S2 RETURN TIMER (s)
Source 2 Return Timer:
When source 2 returns, 2RT is started. At the end of 2RT, source 2 is then
considered to be present.
Should source 2 disappear before the end of 2RT, the changeover will not
be carried out.
NOTE: this timer is only available if source 2 is a Utility, it is replaced by
AVAILABILITY timer 2AT if source is a genset.
0-3600sec 5sec
1AT / 2AT
S2/S1 AVAILABILITY
TIMER (s)
Source (1/2) Available Timer:
Stabilisation time delay for voltage and frequency on Source (1/2) . 1/2AT
starts as soon as the source voltage is above the hysteresis value. Transfer
to Source 1/2 may be done at the end of this time delay.
NOTE: this timer is only available if source is a genset, it is replaced by
RETURN timer 1RT / 2RT if source is a utility.
0-3600sec 180sec
DBT1/ DBT2
(1)
S1 or S2 DEAD BAND
TIMER (s)
Dead Band Timer:
This is the minimum electric dead time (blackout time) to respect when
the source is lost or when transfering between source. This defines the
minimum load supply downtime so as to allow residual voltages that may
be generated by the load (such as motors) to decay.
0-20sec 3sec
(1) For the C55 there is only 1 DBT dead band timer, which will be applied for both sources.