PGS Power supply: Bộ nguồn Switching cho hệ thống PGS

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The PGS Power supply is a high efficiency switch mode power supply with control switch and fault detection system, specially designed to provide the Diamond Parking Guidance System with reliable power.

Operation

The PGS power supply communicates its status to the ZoneBuffer to which it is connected, over its
communication port.

The PGS Sensor is also equipped with status LED. The status LED indicates:

• Communication status.
• Hardware status.Input

The PGS power supply must be connected to the main AC supply, It automatically switches over between 110VAC to 220VAC supply.

Output

The PGS Power supply can deliver 20V and 5A. It can feed up to 250 sensors. However due to voltage drops on the main supply wire JVES recommends a maximum load of 100 sensors per one power supply.

Fault detection circuits

Each Diamond PGS power supply is equipped with an output monitoring circuit. The following is
monitored:

• Power supply voltage.
• Power supply current.

The monitoring circuit is fed by the common bus to ensure operation should the monitored power supply be faulty or not connected.

Communication

The Diamond PGS power supply communicates its status over the RS232 daisy chain communication line and can be connected anywhere within the sensor array.

Normally the ZoneBuffer to which the power supply is connected will collect the status at fixed intervals. In case of a fault the ControlRoom will issue an alert.