
3-20 Troubleshooting
7000-TD002A-EN-P – September 2007
FAULT
MESSAGE
FAULT
CODE
DESCRIPTION
RECOMMENDED ACTIONS
Pump/Fan Pwr
Off
(C-Frame Only)
71
The control power to the pumping system
and the heat exchanger fans is not present.
The drive detected that the Pump/Fan power
is off.
–
Verify the disconnect switch is closed
and that there are no blown fuses
–
Measure the voltage at the pump and fan
inputs to ensure voltage is present
–
Trace the feedback to the drive from the
circuit, looking for loose wiring or
incorrect auxiliaries
RNeut OvrCurrent
115
This fault is valid only for common mode
choke drives (D2D) and indicates that the
current through the neutral resistor has
exceeded the trip settings The current is
displayed by ComMode Current (P697).
–
Check the neutral R for open
–
Check devices on rectifier and inverter
for shorts
–
Check the Line and Motor filter cap for
short between Phase to Neutral or Phase
to Phase.
–
Check the line and motor neutral voltage
–
Verify the neutral R parameters.
–
Investigate the cause of neutral shift
between the input and output filter
capacitors which could be due to severe
line transients or insulation failure.
–
Megger the drive if necessary.
RecAnlg SelfTest
128
On power up the drive has detected that dc
offset on some analog feedback channels is
high. The offending channels are indicated
by parameters RecAnlg SelfTst1, RecAnlg
SelfTst2 and RecAnlg SelfTst3 in Diagnostic
group
–
Check with multimter the DC offset on
the circuit when this fault is present. The
feedbacks that cause this fault can be
determined by looking at parameter
(P473, P474 and P494) under Diagnostic
Group.
–
Cycle Control Power, to see if the Fault
condition remains and Replace ACB if
necessary
RecA2D
Convrsion
131
This fault indicates that the analog to digital
converters on the ACB were not able to
completely transmit the data to the master
processor using the DMA within the
sampling period.
–
Cycle power to the drive.
–
If the problem persists replace DPM or
ACB.
RecChB FbrOptic
152
Not Normally Used: While Not Running, the
Fiber Optic signal from the optional TFB
connected to Channel B fiber optic receiver
RX7 on FOI-L-B is not present. This is only
a fault while not running. If this occurs while
running it will appear as a warning.
RecHSnk
FbrOptic
148
While Not Running, the Fiber Optic signal
from the TFB on the Rectifier Heatsink,
connected to Channel A fiber optic receiver
RX7 on FOI-L-A is not present. This is only
a fault while not running. If this occurs while
running it will appear as a warning.
–
Check TFB and FOI board for power
Check the Fiber Optic cables are
properly seated in the transmitters and
receivers
–
Check the fiber optic cable for
kinks/bends/breaks that could be
blocking the signal
Summary of Contents for PowerFlex 7000
Page 1: ...PowerFlex 7000 Medium Voltage AC Drive TECHNICAL DATA Firmware Version 7 xxx ...
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Page 4: ...ii Table of Contents 7000 TD002A EN P September 2007 ...
Page 44: ...1 40 Functional Description 7000 TD002A EN P September 2007 ...
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Page 346: ...3 58 Troubleshooting 7000 TD002A EN P September 2007 ...
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