Can1 Connection - Dometic Optimus EPS Installation And User Manual

5-22
5.6.2

CAN1 connection

CAN1 is a fault-tolerant network used to connect the actuator to the helms
and CANtrak displays. The network is safety-critical, so be sure you
understand and follow all the requirements in this section.
CAUTION!
CAN1 is a private network that is not NMEA 2000 compatible.
• Do not attempt to connect any other devices to this network.
• Do not cut, splice, or otherwise modify any harnesses.
5.6.2.1 Planning
On small boats the CAN1 harness may be long enough to reach the helm,
but in many applications it will not, so it will need to be extended. Table 5-6
shows the harnesses that are available, up to 36ft (11m) long, with an
available 36ft (11m) extension harness.
One harness is required for single helm station, two are required
DESCRIPTION
Harness, EPS, H4, 6 PIN FCI , F-F
Harness, EPS, FTCAN Extension, M-F
Harness, Wye, M-M-F
Harness, gender changer, M-M
CAN1 Hub, 4xM
Table 5-6.
Considerations
• The CAN1 connector on the actuator harness is female. In order to use
the CM204XX harnesses you must connect a 1ft gender changing
harness (CM22401) to the actuator harness first. Alternatively, you may
use an extension harness (CM22036) to connect the actuator harness
directly to a helm, but it is only available in one length.
• Until the CAN1 hub (HA5497) is available, most systems will require one
or two wye harnesses (CM21702) to make the connections.
• Do not use more than two extensions (for a total of three harnesses)
between consecutive devices.
• The harness length to the farthest device may not exceed 120ft (36m)
in total.
The pages that follow present some sample connection diagrams to help
you determine the harnesses that you need. It's not possible to show every
possible configuration, so please contact Dometic technical support if you
need assistance.
CAN1 HARNESS – HELM TO SCU
for multiple helm stations.
LENGTH, FT (m)
6 (1.8)
12 (3.6)
18 (5.5)
24 (7.3)
30 (9.1)
36 (11.0)
36 (11.0)
2 (0.6)
1 (0.3)
N/A
PART No.
CM20406
CM20412
CM20418
CM20424
CM20430
CM20436
CM22036
CM21702
CM22401
HA5497
EN