Specifications

24 209351 REV B Operations Manual, Redundant System Controllers
3.1 Local / Remote control
Control of the RCP/FPRC can be handled through Front Panel operation, or remotely
through Parallel or Serial communication to a computer.
For local (front panel) operation of the controller, simply toggle the Local/Remote key
until the yellow LED indicator is illuminated on Local. When in Remote mode the front
panel buttons will be inoperative. The indicators and VFD display will still show the sta-
tus of the system. The Local/Remote key is always operative so that the appropriate
mode can be selected. Remote operation enables the serial communication and parallel
I/O control.
3.2 Methods of switching
There are three methods of switching converters in a dual 1:1 redundant system.
1. Manual Mode
2. Automatic Mode
3. Physically Rotating either the Tx or Rx Transfer Switch
3.2.1 Manual Mode
The controller is set to Manual mode by toggling the Auto/Manual key so that the yellow
LED is indicating Manual mode. Make sure that the Local/Remote key is on Local mode
so that the Auto/Manual key is operative. Either unit can be selected online by pressing
the amplifier buttons on the mimic display. The online unit is shown by the green LED
embedded in the button.
3.2.2 Auto Mode
Automatic Switch mode is entered by toggling the Auto/Manual key until the yellow LED
is indicating Auto mode. The online and standby amplifiers can be selected by pressing
the appropriate buttons on the mimic display. This configuration will remain until a fault
condition occurs. Upon failure, the appropriate fault light will illuminate and switchover
will automatically occur.
3.2.3 Physically Rotating Transfer Switch
It is possible to physically rotate the shaft on either the TX or Rx transfer switch to
change the online and standby amplifier positions. This can be done either in manual or
automatic mode. When the switch is physically rotated in automatic mode the controller
will attempt to return the switch to it previous position.
The controller will make two attempts to return the switch before accepting the new
position. The front panel mimic display will show the correct switch path settings even
when the switch is physically rotated.