DSM VF-500 Manuale d'uso - Pagina 6

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Operation

Prior to completing the electrical connections outlined below, ensure that the work place is free

of conductive objects that could pose electrical hazards to the user should the objects make

contact with the high voltage output screw terminals of the VF-500 amplifier.

• Connect the load to the VF-500 via the OUTPUT SMA connector

• Connect line power to the VF-500 through the receptacle on the back panel

• Connect the input signal to the VF-500's INPUT BNC connector

• Adjust the input signal as needed to achieve the desired output from the piezoelectric load

Circuitry Protection

The VF-500 circuitry incorporates over-current, over-temperature and short-circuits protection.

When the protection circuitry is enabled as a result of excessive operating conditions or

temperature, the amplifier will disconnect the output temporarily and will attempt to restart.

During restart, the amplifier will recheck the operating conditions and will go into protection

mode again if fault conditions exist. This protection thus protects both the amplifier and the

load.

The VF-500 is equipped with temperature sensors that will protect the circuitry if the internal

temperature of the unit exceeds the safe operating condition. The over-temperature condition

triggers at approximately 70C. Although the signal from the input BNC will continue to be fed

into the amplifier and the amplifier will remain connected to the load, the output signal will be

restricted to a small voltage oscillation (20-30 mV) around earth ground until the sensor indicates

that the unit has reached approximately 50C. There is no indication to communicate the over-

temperature condition to the operator.

If the equipment is used in a manner not specified by DSM, the protection provided by the

equipment may be impaired.

Recommended Environmental Conditions for Operation

The VF-500 is designed to operate in non-hazardous environments. Any deviation from the

specified environment must be approved by DSM and may result in the voiding of any warranty.

Any deviation not approved by DSM will be grounds for voiding of any warranty.

• Environmental Temperature:

• Percent Relative Humidity:

• Operating Supply Voltage:

0-50C

0-80% non condensing

Refer to label at power receptacle

114 Southeast Parkway Court, Suite 160

Franklin, TN 37064

Tel: 615/595-6665

Fax: 615/595-6610