NF HVA4321, Инструкция по эксплуатации

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3.1 Signal system
HVA4321
3-3
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This signal ON/OFF switch has the function to set whether or not the input signal is transmitted to the high
voltage amplifier. It does not switch ON/OFF the connection between the high voltage amplifying output
and the output terminal of this unit.
The output from the high voltage amplifier is always connected tot the output terminal.
When the following operations are made in SIGNAL ON, SIGNAL OFF occurs forcibly.
・ When operation mode CV/CC of the amplifier is changed
・ When remote/local settings are changed
In SIGNAL OFF, the OFF LED lights. For the following cases, the OFF LED blinks:
・
The HIGH VOLTAGE POWER SUPPLY switch is OFF.
(When the internal high voltage DC power supply is OFF)
When the following operations are made in SIGNAL ON, SIGNAL OFF occurs forcibly and the
LED changes from lighting to blinking.
An error during OFF turns the OFF LED from lighting to blinking.
・
The fan revolution stopped.
・ Temperature in the casing became high.
・ Voltage of the internal control power supply became low.
・ When the LIMIT/TRIP is set to TRIP, the current limiter circuit was activated.
In the cases above, SIGNAL ON cannot be recovered unless the cause is removed.
WARNING