OM POWER OM2000+ User Manual page 29

1 - Power Out is too high
2 - Refl. power too high
3 - Power In is too high
4 - Low output power (tune)
5 - Plate current too high
6 - Grid current is high
7 - Screen current error
8 - N/A
9 - Heating voltage error
A - HARD FAULT
B - Plate voltage error
C - Grid voltage is low
D - Screen voltage error
E - SWR is too high
F - Amplifier is too hot
Most of safety circuits are preset for two levels of exceedances. First level is a warning level. In such a
case a warning message appears on the display, fault LED will flash, but power amplifier will stay in
normal operation. See the table below for warning and fault conditions.
When a fault condition appears during the tuning or operation of the amplifier, the safety circuits will
block transmitting and FAULT LED starts blinking. The amplifier stays in OPER mode. After approx. 1
sec the control circuits will automatically switch the amplifier back to the transmitting mode. If
problem persists, safety circuit will react again.
If the fault will repeat 3 times during 10 seconds, the safety circuits will turn the amplifier to STBY
mode. FAULT LED stays ON. To cancel fault status, press RESET shortly. Power amplifier will stay in
STBY mode.
All the warning and fault messages are stored in the memory. You can display particularly warning
messages and particularly error messages. See the Service menu in the 5.2.3., how to select service
display. All of messages are stored and displayed as a numbers or letters as indicated in this chapter (1
- 9; A - F). They are stored one by one to the memory. You can see them on the display in three lines,
on every second display position (maximum 10 per row, maximum 30 messages for warnings and 30
messages for errors). If memory is full, every new message will delete oldest one and move rest of
them one position back. It means that every time last 30 messages are visible on the display. Next table
shows limited values for the safety circuits activation.
Fault code Parameter
1 Power Output is too high
2 Reflected power is too high
3 Power Input is too high
4 Low output power (tune)
NOTE
NOTE
CAUTION
Warning level
2200W
1700W (50MHz)
250W
80W
Fault level
2300W
1800 (50MHz)
300W
100W
> 3dB below*
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