Troubleshooting 3-5
7000-TD002A-EN-P – September 2007
FAULT
MESSAGE
FAULT
CODE
DESCRIPTION RECOMMENDED ACTIONS
Convrtr Air Flow 176 The Pressure drop at the input to the
converter section sensed by the pressure
transducer (as a voltage) has dropped
below the value set in Pressure Value Trip
(P319). This is dependent on the operation
of the Main Cooling Fan.
– Verify fan rotation
– Check for blocked airflow in the filters/
heatsinks/ ducting (if installed) – Clean as
required
– Improper Trip settings – Verify Pressure
Value voltage level when running with
clear air flow, and compare to expected
values for that specific drive type
– Check that the pressure sensor is working
and is connected to the ACB at J9.
– Verify Alarm and Trip set-up procedure
was completed adequately and adjust as
necessary
– Verify for drives with external ducting that
there is sufficient air to the drive input
– Verify supply voltage to differential
pressure transducer, and confirm output is
stable
ConductivityHigh
(C-Frame Only)
68 The measured coolant conductivity is
greater than 2 μS/cm
3
.
– Verify that no foreign debris has entered
the system (iron piping, non-deionized
water, etc.)
– Wash the mesh filters
– Change the de-ionizing cartridge and run
the system, verifying that the conductivity
is decreasing
Control 5V Loss 54 There has been a loss of the 5 volt DC rail
from the DC/DC Converter.
– Check connections, test the rail voltage
level and test for shorts
– Replace the DC/DC converter if this
problem remains.
Control 15V Loss 55 There has been a loss of the 15 volt DC rail
from the DC/DC Converter.
– Check connections, test the rail voltage
level and test for shorts.
– Replace the DC/DC converter if this
problem remains.
Control 56V Loss 52 The drive has detected a loss of the 56V dc
voltage feeding the DC/DC converter.
– Check the connections, feedback wiring
on J14 of the ACB, the DC output of the
AC/DC converter and the input voltage to
the DC/DC converter.
– Replace the power supply if required.
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