Advanced Energy HFV 8000, User Manual

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5705211-C Troubleshooting and Global Customer Support 6-5
HFV 8000 Generator
4
Cycle the power on the HFV generator. With the cable disconnected, the HFV
generator will default to
Generator User port control.
Interlock OK Indicator Off
The front panel Interlock OK indicator illuminates when the interlock is satisfied. If
this indicator is not lit, the output will be disabled. Three settings on the HFV
generator will satisfy the interlock circuit.
1. The front panel Standby/Stop rocker switch must be in the Standby (up)
position.
Standby is the closed position for this switch.
2. The RF output cover must be firmly attached.
A microswitch on the rear panel senses the presence of the output cover.
3. There must be an external closure between pins 11 and 12 on the rear panel
Generator User port. This closure must have a series resistance of 15
Ω
or less
and should have no other external loading. (See Figure 4-7 on page 4-9 for an
electrical diagram.)
WHAT IS THE INTERLOCK?
The HFV generator uses an interlock circuit to shut off the output in emergency
situations. The interlock circuit is basically several switches wired in series. The
interlock loop of the HFV generator must be closed (or satisfied) before the output
power can be enabled.
Note: When this loop is interrupted, the unit disables the output by opening the main
contactor inside the supply. Once the interlock is reestablished, the main
contactor will close, but the output will not come on until the RF power is
cycled. (See
Figure 4-7 on page 4-9 for an electrical diagram.)
Load Regulation Indicator Flashing
During normal operation, the Load Regulation indicator will either be on (load power
regulation) or off (forward power regulation).
When this indicator is flashing, the unit is in center frequency mode. Center
Frequency mode is used only to optimize settings on some systems during initial
setup.
To select Center Frequency mode:
1. Press the Display Mode button on the front panel repeatedly until the display
reads:
Top line—Press and Hold