Apex Digital 5708009-C - Manual (Page 147)

5708009-C 6-5
Apex 1 to 5.5 kW Generator
Interlock LED is not Lit
When the AC On LED is lit and the Interlock LED is not lit, either the interlock is not
satisfied or was interrupted. Both the interlock LED and the RF output will remain off
until the interlock is satisfied and an RF off command is given.
To satisfy the interlock, make sure the RF output cover is firmly attached and ensure
the interlock pins on the User port are satisfied.
Note: See “Apex User Port Options” on page 4-2 to determine which User port you
have. then go to the appropriate User port section and see the pin descriptions
table to see how to satisfy the interlock pins. Once the interlock conditions are
satisfied, send an RF Off command to reset the generator and LED states.
RF ON LED Flashing
The RF On LED will flash under the following conditions:
– If the RF On LED is flashing right after enabling the AC input, the Apex unit
may be in User control mode and receiving an RF On command at the User
port. After verifying that the User port and control mode are properly setup for
your system, send an RF Off command to reset the unit.
– The RF On LED flashes when the output has been latched off due to a fault or
interlock interrupt. After clearing the fault or reestablishing interlock, send an
RF Off command to reset the indicators. If this LED is still flashing after
resetting, go to “Troubleshooting Questions” on page 6-3 to isolate the error.
If the RF On LED stops flashing after resetting, the faults have been cleared.
Try normal operation.
Power Limit LED is Lit
When lit, the power limit LED indicates that the generator is unable to supply the
requested power setpoint level due to a limiting condition. When an internal
protection limit is exceeded, the RF output limited, but not shut off. If this LED is lit
along with a high reflected power reading, it is most likely that the generator is
protecting itself in response to an external load condition. See “External Load Checks
- Open/Short RF Output Path” on page 6-6.
To troubleshoot this error indication, disable the output and rear circuit breaker (if
your Apex unit has one). Then inspect and evaluate the unit’s RF output connector,
output cable, tuner and chamber. Look for signs of arcing and heat stress. Verify high
impedance between the center conductor and outer shields on the connectors and
cables. Verify cable continuity. Swap suspected cables or units with known good
cables or units. If the problem cannot be isolated after trying these tips, contact AE
Global Support.