Automatic transfer switch
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Installa
tion and user manual
23
• P05.06 – If, after sending an open or close command to a circuit breaker, this is not positioned correctly within this time
(feedback by means of OC contacts), alarms A03 or A04 are generated.
• P05.07 – It defines whether open-close outputs must be continuously active (application with contactors or circuit bre-
akers) or in pulse mode, i.e. activated until the device has been positioned as required. If in pulse mode, the command
is extended for a specified time (see P5.08 e P5.09) even after positioning completion.
• P05.08 – Minimum duration of an opening command pulse. For the motorized circuit breaker application, it must be set
to a time long enough to allow the load of the springs. This time is considered also when working in continuous mode.
• P05.09 – Duration of the closing command pulse.
• P05.10 – It defines the behaviour of the open/close command outputs when working in continuous command mode
and the automatic transfer switch is in RESET/OFF mode. This parameter can be useful when working with contactors.
OFF – It opens the command outputs
NOC – No change on command output
• P05.11 – If in automatic mode both sources are not available at the same time for a time exceeding P5.11, alarm A07
is generated.
• P05.12 – If this parameter is enabled, after a transfer to the S.Q2, restoring to S.Q1 does not occur automatically when
the latter becomes available again, but it must be commanded in manual mode.
OFF – Disabled
ON – Enabled
• P05.13 – If enabled, in case of closing failure of the switching device, in addition to the generation of the proper
feedback alarm (A03 or A04) the load is switched to the alternative source.
OFF = function disabled.
1 = check source S.Q1.
2 = check source S.Q2.
1+2 = check both S.Q1 and S.Q2.
• P05.14 – In case of using of UVR in the changeover system controlled by ATS (parameter “
UVR command
” into menu
M11 “
programmable outputs
”) this parameter defines the period of deactivation of them to assure the immediate ope-
ning of devices)
• P05.15 – Time between the opening pulse on the minimum voltage coil and the spring reload command.
• P05.16 – In case of use of motorized breakers, this parameter defines in which operating mode the automatic transfer
switch must execute the closing retry cycle. The closing retry is executed in case the breaker fails to close because the
springs were not loaded. It consists of a complete opening and spring loading cycle, followed by the issuing of a new
closing command. If the breaker fails to close again, then the A03 or A04 feedback alarm are generated.
