User's Manual

SBS-900 Shore Based Radar Systems
Chapter 9: Planned maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 116 of 240
10-year maintenance: Changing the static inverter in the RDU
Inspection sheet
3 of 6
The inverter is mounted onto a flat plate; this must be removed and fitted to the replacement
inverter.
The replacement inverter assembly can now be installed using the same mounting points and
fasteners.
Reconnect
DO NOT reconnect PL4 (3-phase supply to antenna motor).
Reconnect all other cables ensuring that they are replaced using the positions, polarity and/ or
marker numbers noted when removing them earlier.
The inverter will now need to be commissioned as shown below.
A.
Switch
Settings:
There are two switches within
the inverter that need to be
configured as follows.
The switches are located
behind the access door on the
front of the unit.
These switches MUST be set
before power is applied to a
replacement inverter and
before any changes are made
to the inverter setup menus.
SW1: Set to the middle
position.
SW2 Set as shown.
B. First time POWER ON
Switch ON the AC mains supply connected to PL3. The inverter will initialise and the readout
should display n50. This indicates 50Hz input conditions will be set (if not, press. button
until n50 is displayed).
Press ENTER. The inverter will set the relevant internal settings; the display will show
HELLO then settle at 0.0.