888-2406-002
6-15
WARNING: Disconnect primary power prior to servicing.
Troubleshooting
It is also possible that a VSWR fault could be caused by a defective forward or
reflected directional coupler or simply from calibration error. An external reflected
power meter should be used to verify if there is really a VSWR problem or if it is an
internal sensor problem. Keep in mind that the reflected reading will be less than
100 watts when the transmitter is in foldback. This would barely be visible on a
10kW scale, but care should be taken to avoid overloading a lower power element.
6.9.6
INTLK, External Interlock Fault
This fault is activated anytime the External Interlock circuit is opened. An External
Interlock fault shuts the transmitter off by disengaging the main AC contactor.
There must be a closed contact between the external interlock connections in order
for the transmitter to operate. This fault also illuminates (not flashing) the Interlock
Fault LED on the controller front panel. See the Table at the end of Section II,
Installation, for more information on External Interlock Connections.
6.9.7
FAILSAFE, Interlock Fault
This fault will mute the transmitter output anytime the Failsafe interlock contacts
are opened. There must be a closed contact between the failsafe interlock contacts in
order for the transmitter to operate. This fault also flashes the Interlock Fault LED
on the controller front panel. See the Table at the end of Section II, Installation, for
more information on Failsafe Interlock Connections.
6.9.8
POWER_FAIL, Fault
This fault is activated as a result of an AC power failure. This fault is detected by
monitoring the +20Vdc supply on the Life Support Board (IC U37). If the +20Vdc
supply drops below the power fail threshold the POWER_FAIL signal is sent to the
Master Controller telling it to save the time and ignore certain types of faults which
will obviously be present during a power failure.
6.9.9
LOW_AIR, Fault
Nominal air flow for the Z2 is 350 cfm. The airflow reading should be near 100% at
high fan speed and is typically around 60% for low fan speed. If the airflow is
reduced to 25% or 88 cfm, the LOW_AIR fault is triggered. The fan will be
switched to high speed in an attempt to compensate. However if the airflow is not
increased above 25%, the transmitter will shut off. Also, if the transmitter is already
at high fan speed when this fault occurs, the transmitter will be shut off. The air
flow percentage can be seen on the Diagnostics Display by pressing [METERING,
C,D,B]. Depending on the ambient temperature, one of several temperature faults
could proceed an air flow fault.
Summary of Contents for Platinum Z2 CD
Page 4: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 6: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 8: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
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Page 70: ...3 14 888 2406 002 WARNING Disconnect primary power prior to servicing Operator Guide ...
Page 130: ...4 60 888 2406 002 WARNING Disconnect primary power prior to servicing Overall System Theory ...
Page 194: ...6 38 888 2406 002 WARNING Disconnect primary power prior to servicing Troubleshooting ...
Page 196: ...7 2 888 2406 002 WARNING Disconnect primary power prior to servicing Parts List ...
