Advanced Energy RFG 1251 User Manual page 40

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Advanced Energy
7. Temporarily inhibit the RF output by clearing the RF PWR ON signal (pin 4). Verify that
the RF ON indicator extinguishes, the RF STATUS signal (pins 20 and 7) goes inactive,
and the RF output power goes to 0 (as measured at the readback signal, pin 3). Re-enable
the RF output by activating the RF PWR ON signal (pin 4). The generator should return
to the conditions defined in step 6 above.
8. Temporarily open the interlock loop by removing the contact closure between pins 10 and
23 on the User Port. You should be able to hear the ac contactor (relay) inside the
generator open. Verify that the RF ON indicator extinguishes, the Interlock Open
indicator is lit, and there is no RF power being produced by the generator (FWD/DELV
PWR MONITOR signal should go to 0).
9. Close the interlock loop again by reconnecting pins 10 and 23 on the User Port. Verify
that the RF ON indicator remains off (even though the RF PWR ON signal has remained
active) and that no RF power is being produced. Verify that the Interlock Open indicator
extinguishes.
Note: The RF output remains disabled in this case because, after any disruption in the RF
output, the RF PWR ON signal must be toggled from off to on before RF power is
restored.
10. Toggle the RF PWR ON signal (pin 4) off and then back on again. Verify that the RF ON
indicator lights and that RF power is once again present (reference step 6).
11. Return the FWD/DELV PWR MONITOR signal to 0 V, disable the RF output by clearing
the RF PWR ON signal (pin 4), and then turn off the generator's circuit breaker.
6-2 Operation 5706058-A