17
• clutch: a two-core cable with red (+) and blue (-) cores
Follow these steps to connect the rotary drive to the course computer:
1. Measure the total distance of cable run from the drive unit to the course computer:
• use
Table 1-1
to identify the appropriate motor cable size
• use at least 1.5 mm
2
(16 AWG) copper cable for the clutch
2. Join these cables to the drive cables using appropriate electrical connectors or junction
boxes at the correct power rating.
3. Route the cables back to the course computer, taking into account the EMC installation
guidelines (see
page 9
).
4. Connect the cables to the course computer (see
Figure 2
):
•
CLUTCH
terminals: red core to +ve, blue core to -ve.
•
MOTOR
terminals: at this stage you can connect either motor cable to either termi-
nal. You will check these connections after installing the rest of the autopilot system.
Table 1-1: Recommended cable sizes
Cable length
(drive to course computer)
Cable gauge
(AWG)
Copper area
(mm
2
)
Type 1 drive
up to 3m (10ft)
up to 5m (16ft)
up to 7m (23ft)
up to 10m (32ft)
up to 16m (52ft)
14
12
10
8
6
2.5
4
6
10
16
Type 2 drive 12V
up to 5m (16ft)
up to 7m (23ft)
up to 16m (52ft)
10
8
6
6
10
16
Type 2 drive 24V
up to 3m (10ft)
up to 5m (16ft)
up to 10m (32ft)
up to 16m (52ft)
12
10
8
6
4
6
10
16
81174_4.book Page 17 Tuesday, October 29, 2013 11:42 AM
