Advantech DLoG DLT-V4108, Руководство пользователя

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Electrical installation
Advantech-DLoG DLT-V4108 Manual, V01 Prelim 61 / 81
15.2.2. Electrical installation
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Pay special attention to the various electrical potentials when installing the unit on vehicles.
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On the DLT-V4108, the logic ground and the shield ground are firmly connected to each
other. The “logic ground” is the earth line (GND) for all of the internal electrical components,
such as the display and the CPU.
−
All cable shields and the housing are connected with the shield ground.
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Some forklifts have a chassis that is connected to DC
+
. Therefore, the DLT-V4108 chassis is
also connected to DC
+
. If peripheral devices supply DC
−
to the shield connection of the DLT-
V4108 by a connection plug, for example over a serial connection, this will cause a short-
circuit and malfunctions or power failures will be unavoidable.
−
Always attach ring tongues on the supply voltage cable to the provided ground bolt situated
on the connector panel.
Fig. 15.1: Position of the ground bolt
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The other end of the power supply cable must be connected to the vehicle’s chassis.
−
Connect the power supply cable of the DLT-V4108 as close to the battery as possible.
Connecting the DLT-V4108 to large electrical loads, such as converters for the forklift motor
may result in random restarts, malfunctions and/or irreparable damage to the device.
−
If you want to connect devices fed by other power sources to the DLT-V4108 (e.g. printers),
be sure to power up the peripheral devices at the same time or after the DLT-V4108;
otherwise, you may encounter start-up problems, malfunctions or even irreparable damage
to the device.
Ground bolt