Advanced Energy HFV 8000, User Manual

Page: 120 / 142

6-6 Troubleshooting and Global Customer Support 5705211-C
Advanced Energy
®
Bottom line—Center/Auto Tune
2. Press and hold the Display Mode button for at least five seconds until the Load
Regulation indicator flashes.
To return to the automatic tuning mode:
1. Press the Display Mode button on the front panel repeatedly until the display
reads:
Top line—Press and Hold
Bottom line—Center/Auto Tune
2. Press and hold the Display Mode button for at least five seconds until the Load
Regulation indicator does not flash.
RF On Indicator Off
When the front panel RF On indicator illuminates, the output is enabled and the set
point (or requested power level) is above the minimum required setting. In order for
the RF On indicator to be on, the following conditions must be met:
1. The front panel Fault indicator must be off.
If this indicator is on, see “Fault Indicator On” on page 6-3 .
2. The front panel Interlock OK indicator must be on.
If this indicator is off, see “Interlock OK Indicator Off” on page 6-5 .
3. In order for the HFV generator to deliver power, the unit must receive an RF on
command, and the set point (or requested output power level) must be above a
specified minimum (see Table 3-3 on page 3-5 ). When these two conditions are
met, the RF On indicator should illuminate, and the generator will deliver power.
Note: How to send the RF on command depends how the unit is controlled:
• For Generator User port control, verify:
There is an external contact closure between pins 4 and 9 to enable the RF
output power. See Table 4-1 on page 4-2 and Figure 4-4 on page 4-8 .
• For DeviceNet control, verify:
An RF on command is given by having Bit 0 of Byte 4 of the poll command
message set to 1. See
“Poll Command and Poll Response Messages” on
page 4-54 for more details.
The output power set point minimum is a threshold that allows the generator to
deliver power (see
“Meeting Minimum Power Threshold” on page 5-11 ). The
set point circuitry uses hysteresis, so the generator has two thresholds. If an RF
on command is given, the set point level must be above the output on threshold