Checking for defective vt-probes – GE Industrial Solutions Galaxy Pulsar Edge User Manual
Page 134
Galaxy Pulsar Edge Power System Controller
Issue 3 October 2011
134
Table 9-A: Power System Troubleshooting Table
Controller
LED
User Interface
Display
Rectifier
LED
Distribution
Module
Board LED
Possible Problem(s)
Possible Solution(s)
GREEN
No Alarm,
Individual Shunt
Currents
displayed at or
above their
maximum
display values
(
≥600A for
loads,
≥800A for
battery)
AC OK
DC OK
Normal
One or both of the
QS871A shunt inputs is
open-circuit.
1. Verify that the respective shunt
has its green and yellow wire
connections attached used for
the current measurements.
2. Verify the shunt connection to
the QS871A is good by
verifying the green and yellow
wire connections from the shunt
follows through to the 10-pin
connector at the respective
QS871A.
Note 1: While in hiccup mode, the rectifier will attempt to restart every 10 seconds for a
maximum of 3 times.
Note 2: Refer to Section 5, LVD board Removal for removal details. Note that the power system
will continue to power the load while the LVD board is out of the system; however, there
will be no possibility of battery backup until the LVD board is replaced.
Checking for Defective VT-Probes
1. Disconnect the first probe from its RJ-45 terminal block.
2. Run the CLE function. If the system controller illuminates its LED in green color, the probe is
defective. Alternatively, the number of registered probes may be known from the terminal
interface (TI) by running the Number of Temperatures present command, see Appendix B. If
the registered number of probes is equal to the total number of probes connected, remember
you've removed a probe, so the total number should be one less than that during installation,
and then the first probe is defective. Replace the probe with a different probe and follow the
above procedure to ensure it is operational.
3. If the system controller LED remains green or the number of registered probes is still incorrect,
replace the first probe and remove the second probe and repeat Step 2. Continue this procedure
until the defective probe has been found.