
22
CyScan Positioning System • Installation and Maintenance Guide r1.1
GCS
GCS
Stage 6 - The Controller Board
!
IMPORTANT: Observe Static Safe handling procedure.
To remove the Controller Board:
1 Carefully disconnect all of the
connections to the controller board.
2 Using a flat blade screwdriver, first
remove the top left screw to release
the earth contacts. Next disconnect
the cable connectors and then
remove the remaining seven nylon
M3 x 6 screws and two spacers
securing the board to the sensor
frame.
3 Remove the controller board from the
unit.
Note: The CPU Module and Controller
Board should be kept- and exchanged
together as a pair.
red stripe
red stripe
CPU
board
red stripe
Motor
Gearbox
POWER
POWER
IN
DATA
Vertical
Reference
Unit
Rotor
Roll
Actuator
Pitch
Actuator
Yaw
Gyro
Case LED
Indicators
0V - BLUE
24V - BROWN
To fit the Controller Board:
1 Place the controller board against its mounting pillars on the Starboard side of the
sensor frame. Ensure that all of the connections to be made to the controller are in
suitable positions, particularly the ribbon cables that will attach to the connectors
along the bottom edge – these must pass under the controller board and are most
easily positioned before the board is fixed in place.
2 Insert seven nylon M3 x 6 screws
and two spacers in the outer holes
of the controller board (except the
top left hole) and into the corre-
sponding threaded mounting posts
on the sensor frame. Insert the steel
screw into the top left hole and
ensure the earth contact is attached.
Using a flat blade screwdriver,
tighten all six screws to reasonable
hand tightness.
3 Attach the following cables to
the appropriate connectors on
the controller board (refer to
the connection diagram): the
pitch and roll actuator cables,
the rotor unit cable, the VRU
cable and the two power leads.
If the three short ribbon cables
are not already attached to the
controller, attach them now,
ensuring that their orientations
match those shown on the
block connection diagram
ð
If the Motor Gearbox is in
place, also attach the motor
power and data cables.