AB- V-MA-00650
01 February 2021
JF/RR
6
LD900 and INS
Commissioning Guide
IMU Placement
The following factors need to be considered when installing the IMU.
•
Mount as close as possible to the vessel centre point of gravity
•
Mounted on a fabricated plate secured to a flat level surface within the vessel frame.
•
Mounted with connectors facing forward
•
The IMU base plate must have clearance to allow IMU to be securely bolted.
•
Mount in a secure location where it will not be damaged
•
Avoid locations that have a strong vibration.
•
The installation engineer should endeavour to align the IMU axes as closely as possible with the
vessel frame using a general arrangement diagram, or by referencing available surfaces such as walls
or floor welds. Refer to the below figure, following the arrows to orientate the IMU with the vessel
frame:
IMU-ISA-100C
– Plan View
IMU-µIMU-IC - Plan View
As shown below, the IMU baseplates feature four mounting holes, threaded for M6 bolts. The IMU must be
securely bolted to the IMU baseplate on a level surface, with the connectors facing forward to the vessel
bow. By mounting the IMU in a fixed position a constant distance and orientation between the IMU to the
GNSS antenna can be maintained.
FORWARD
S
T
AR
BOAR
D
FORWARD
ST
AR
BO
AR
D
