Brainboxes PX-246 Especificaciones descargar pdf (Pagina 59)

Operation

6.6 AUTOMATIC MODE

NOTE:

NOTE:NOTE:

NOTE:

If a digital input configured to

If a digital input configured to If a digital input configured to

If a digital input configured to

panel lock

panel lockpanel lock

panel lock

is active,

is active, is active,

is active, changing module modes will

changing module modes will changing module modes will

changing module modes will

not be possible. Viewing

not be possible. Viewing not be possible. Viewing

not be possible. Viewing the instruments and event logs is NOT affected by panel lock.

the instruments and event logs is NOT affected by panel lock. the instruments and event logs is NOT affected by panel lock.

the instruments and event logs is NOT affected by panel lock.

Auto mode is activated by pressing the button.

In AUTO

‘ ’

mode, the module will operate fully automatically, changing between the two supplies in

case of failure without user intervention. An LED indicator beside the button confirms this action.

6.6.1 WAITING IN AUTO MODE

If a starting/loading request is made, the starting sequence will begin.

Starting/loading requests can be from the following sources:

• S1 supply out of limits

• Activation of an auxiliary input that has been configured to remote start on load or remote start

off load.

• Activation of the inbuilt exercise scheduler.

• Instruction from external remote telemetry devices using the RS232 or RS485 interface

6.6.2 STARTING SEQUENCE

To allow for ‘false’ start/load requests such as S1 brownouts, the start delay timer begins. There are

individual start delay timers for each of the different start/load request types.

Should all start/load requests be removed during the start delay timer, the unit will return to a stand-by

state.

If a start/load request is still present at the end of the start delay timer, an output to give a start signal

to an external generator controller is activated (if S2 is configured as a generator).

If the generator fails to start during the ‘S2 Fail Delay’ timer, an alarm will appear on the display which

shows Fail to Start. S2 is seen as available once the supply is within limits (if configured as a mains

supply) or had achieved loading voltage and frequency (if configured as a generator).

If a start/load request is present but the starting sequence has not begun, an input configured to ‘Auto

Start Inhibit’ could be active.

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