Vanguard CT-6500 - Manual (Page 60)

CT-6500 Operating Instructions
53
10.0 CT-6500 Trouble Shooting Guide
Problems Suggestion
1. CT-6500 will not trip nor close the breaker.
n Make sure you hold the “ARM” switch down during
each test.
n Check the OPEN or CLOSE fuses.
n Check the initiate leads. For a “Positive Trip” circuit,
one Close lead and one Open lead should be
connected to the Positive side of the power supply.
n Check the initiate leads. For a “Negative Trip” circuit,
one Close lead and one Open lead should be
connected to the Negative side of the power supply.
2. Getting message “TRIGGER FAULT”
“No Trigger”
When using external trigger
n Trigger voltage was not detected by the CT-6500.
n Check the external trigger input to the CT-6500.
n Make sure the external trigger signal is presented
when the CT-6500 displays “AWAITING TRIGGER.”
3. Missing timing or transducer channels on report and
graphic output
n Timing or transducer channels were not turned on.
Turn on channels by going to “SETUP”, “NEXT PAGE”,
“NUMBNER OF CHANNELS”
4. No contact time (0 ms) in Trip or Close test.
n Make sure one side of the breaker in not grounded.
n Make sure the breaker operates on the Open or
Close test only. A dual operation OPEN-CLOSE or
CLOSE-OPEN will result in 0 ms reading.
n Damaged CT-6500 contact channels or bad cables.
Try the “CHECK HOOK-UP” test.
5. No contact time (0 ms) in Close-Open.
n Make sure the breaker contacts complete the
transition from the Open (initial state) to the Close, then
to the Open (final state). You can see The transition by
looking at the timing chart.
n Make sure the contact close state is longer than
10 ms. The CT-6500 has a 10ms de-bounce time, any
contact state less than or equal to 10ms is invalid, thus
the delay time is probably too slow.
n Try the Close-Open using contact channel #1 option.
6. Select Open-Close test. The breaker opens and will
not close.
n Delay between Open to Close is probably too small.
Increase delay time.
7. No data or erratic reading on travel transducer.
n Bad transducer. Try “TEST TRANSDUCER”
diagnostics.
n Transducer slider is not secured to timing rod.
n Transducer is not secured properly.
8. No activity on” V2” voltage input channel.
n The “V2” voltage input channel requires a voltage
change from 0 V to above 30 V, to see activities on the
timing chart.