Comtech EF Data HPCST-5000 - Manual (Page 133)

High-Power TWTA Satellite Terminals Controller for Single Thread Systems
Rev. 1 5–5
Table 5-2. Fault Indicator Descriptions
Key
# Nomenclature Type Function
7 EXTERNAL
INTERLOCK
fault indicator Digital status
(LED = Red) When lit, indicates external interlock circuit has been opened. Does not
trigger Summary Fault.
8 HELIX ARC
fault indicator Digital status
(LED = Red) When lit, indicates helix current is too high. Can be caused by arcing in
output waveguide or load, or defective TWT.
9 HIGH VOLTAGE
fault indicator Digital status
(LED = Red) When lit, indicates an internal power supply fault. Contact the EFData
Customer Support Department for corrective action.
10 TEMP
fault indicator Digital status
(LED = Red) When lit, indicates TWT temperature is too high. Disables high voltage
until the temperature drops below the preset value.
11 FAN LOCK
fault indicator Digital status
(LED = Red) When lit, indicates TWT cooling fan is locked. Contact the EFData
Customer Support Department for corrective action.
12 SUMMARY FAULT
indicator LED = Red When lit, indicates fault has been detected or TWT interface interlock
problem.
7 8 9 1 0 11 1 2
E X T E R N A L
IN T E R L O C K
H E L IX
A R C
H IG H
V O LTA G E
T E M P
FA U LT S
FA N
L O C K
S U M M A RY
FA U LT
Figure 5 - 4. Fault Indicators