Checking for defective vt-probes – GE Industrial Solutions Pulsar Plus Controller User Manual

Page 122

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Pulsar Plus Controller Family

Issue 7 December 2011

122

Table 44 Infinity NE System Troubleshooting

Alarm

Severity

Indicator

6

User Interface

Display

Rectifier

LED

Distribution

Module

Board LED

Possible Problem(s)

Possible Solution(s)

SYSOK

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
will 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.

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