7 Lower Main

Once the Main Compartment is correctly docked, install the SIM card and the external signal cables on the Lower Main by following the steps described in this section.

7.1 Overview of Lower Main

An overview of the Lower Main connection interface is shown in figure 7.1, with important parts identified and listed below.

A I/O screw terminals B LED 1–3 C Ethernet socket D Antenna socket 1 – GSM antenna E 1 USB port for software updates (not to be used for mobile phone charging) F SIM card holder

7.2 Install the SIM card

1) Remove the three screws and remove the black plastic lid from the Lower Main (see figure 7.2). Use a torx T10.

2) Pull out the top of the SIM card holder to open it. 3) Put the SIM card into the holder (see figure 7.3). 4) Close the SIM card holder and slide it back into position. 5) Put the black plastic lid back and tighten the screws.

7.3 Connect the signal cables

The sensors and antennas are connected to the Lower Main. When the Main Compartment is docked, the Lower Main is accessed through the Connection Compartment.

Prewired I/O screw terminals are bundled and found in the Connection Compartment. I/O screw terminals that are not prewired are supplied separately.

The I/O screw terminals are categorized as TNV-2 circuit according to IEC 60950-1.

1) If applicable, connect genset start signal cables to the I/O screw terminal and pins according to the table in section 7.4 I/O screw terminals. Use a 2.5 mm screwdriver. 2) If applicable, connect external signal cables to the I/O screw terminal and pins according to the table in section 7.4 I/O screw terminals. Use a 2.5 mm screwdriver. 3) Install the 8 I/O screw terminals onto the Lower Main. Connect them according to the labels, C1, C2, C3, C4, C5, C6, C7 and C8 (see figure 7.3). 4) Pull the outside air temperature sensor cable through the cable sealing and let it hang below the Connection Compartment. The outside air temperature sensor is connected to the I/O screw terminals from factory. 5) Connect the GSM antenna to the MODEM socket on the Lower Main (see figure 7.4). The GSM cable is prewired to the antenna in the Connection Compartment.

7.4 I/O screw terminals

The table below shows the pin descriptions and the default configurations for the I/O screw terminals. The digital inputs can be configured to normally open or normally closed.

*connected from factory

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