Troubleshooting 3-37
7000-TD002A-EN-P – September 2007
WARNING
MESSAGE
WARNING
CODE
DESCRIPTION RECOMMENDED ACTIONS
CoolantLevel Low
(C-FRAME ONLY)
38 This warning is for liquid cool drives. The
measured coolant level in the reservoir is
low. Check the coolant level and inspect for
any leaks. If there are no visible leaks, then
top up the level with approved coolant.
– You will lose coolant over time through
evaporation, but you should still verify
that there are no slow leaks in the
system
– Add de-ionized water to the system
since this is what normally evaporates,
and check the coolant mixture with a
glycol tester
Coolant Temp Low
(C-FRAME ONLY)
35 This warning is for liquid cool drives.
Measured coolant temperature is below
10degC. The warning will not clear until the
temperature rises above 15°C (58°F).
Check thermostatic bypass valve and warm
control room to get the drive operational.
– Verify that the thermostatic bypass valve
(V10) was not left open
– Warm up the control room ambient to
get the drive to an operational level
CoolantTempHigh
(C-FRAME ONLY)
36 The measured coolant temperature has
exceeded 48°C (120°F) trip setting (P478).
The warning can not be cleared until the
temperature has dropped below 44°C
(110°F).
– Verify the heat exchanger fans are
operating
– Verify that the thermostatic valve is fully
opened
– Check that all valves are in the normal
operating position
– Verify room ambient temperature is
adequate for the drive operation
Ctrl5V Redundant 118 5V redundant output of the DC/DC converter
has failed.
– Verify the output from the alarm signal is
wired correctly
– Check the 5V rail connections
– Replace Power Supply when possible
DCLnk OvrTemp 76 There is a thermal switch in each DC Link
winding, and they are connected in series.
The thermal switch in the DC Link inductor
has detected an over temperature condition
and opened the AC input to the standard
XIO. The alarm is user configurable by
parameters in Alarm Config.
– Ensure that the converter cooling fan is
working and that the air flow is not
obstructed.
– Also check the 120V wiring and the XIO
card.
– Make sure there are no distorted
waveforms to the DC link. Check if there
are harmonics on line voltages/current
DCLnk OvrCurrent 156 The DC Link current given by Idc Feedback
(P322) has exceeded the DC Link current
trip settings. A warning is logged first and if
the over-current persists for the time delay a
fault is logged.
– See associated Fault Description
– Verify the parameter settings of the
drive. Check the HECS and burden
resistor. Confirm stable operation of the
drive and any sudden load transients.
DC Link Range 167 The calculated pu value (P27) of the dc link
inductance is less than the minimum
recommended. For 6P SCR the value is less
than 0.8pu, for 18-pulse SCR the value is
less than 0.42pu and for PWM rectifier
drives the value is less than 0.55pu.
– Review DC Link nameplate data
– Review Motor and Drive nameplate data
and verify that all parameters were
entered properly
– Contact factory if the above seems OK
To Next Page
Loading...
