Junction Unit; Cable Connections; Figure 4-6 J3Xx Mounting - Simrad AP35 Instruction Manual

4.8 Junction unit

The junction unit is designed to operate in a location that provides ambient
temperatures below +55°C (+130°F).
Note !
The junction units (J3000X, J300X and J300X-40) are not water proof and
should be mounted vertically as shown in a dry place between the control
unit and the drive unit.

Cable connections

Use only shielded cables. This includes Mains input, drive units and if
necessary for the extension of the RF300 Rudder Feedback cable. The
clutch/bypass cable and the solenoid cable should be 1,5 mm
Signal cables should be 0.5 mm
The mains supply cable and the drive unit motor cable should have sufficient
wire gauge. This will minimize voltage drop and allow the drive unit to
operate at full power.
Refer to the table below for recommended cable sizes.
1. Distribution Board to Junction Unit.
2. Junction Unit to Drive Unit motor
Up to 3 m (10 ft.)
Up to 6 m (20 ft.)
Up to 10 m (32 ft.)
Up to 16 m (52 ft.)
22083083H

Figure 4-6 J3XX mounting

Cable length
(Length refers to each of the two cables)
2
(AWG20) twisted pairs.
Drive Unit Voltage
12 V
AWG
12
10
8
6
Installation
2
(AWG14).
24V
2 2
mm AWG mm
2,5 12 2,5
4 10 2,5
6 10 4
10 8 6
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