BES X Installation Manual, Rev.9, Jun 2018 LCOM line
P/N: 400288005 85
6.1 - LCOM wiring
The correct wiring for each LCOM device is made keeping the Phoenix connector in your hand, as shown in
the picture below. The pin number 1 is the first starting from the left.
6.2 - Replacement of LCOM devices
The following procedure is to be carried out when disconnecting or replacing LCOM devices.
1. The main power supply to the 4HD/5HD-HUB must first be isolated (turned off) before attempting
to make any disconnection in the LCOM line.
Failure to carry out this action may result in major damages for one or more of the LCOM devices.
2. Care must be taken to make note of the wiring sequence on the four-conductor cable, as it is
imperative that these wires are connected to the replacement device in the same way.
If for any reason you are unsure of how to make a re-connection check the LCOM line starting from
the 4HD/5HD-HUB C1 - LCOM connector.
3. Re-connected the main voltage to the 4HD/5HD-HUB only after you are absolutely sure that the
correct connections have been made.
6.3 - Solving problems on the LCOM line
Introduction
Since the four wires constituting the LCOM network are shared by all the devices connected to it, a fault in
any one of the devices can cause the malfunction of the entire LCOM network. This situation is initially
detected by the 4HD/5HD-CPU during the lane boot-up and is displayed with an error code on the monitors
of both lanes.
In order to determine the cause of the problem, which could be by: a bad connection, a damaged electronic
board, or a damaged cable, the following tests can be done.
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