Rockwell Automation 7000A PowerFlex Medium Voltage Drive (A-Frame) - Classic Control - Manual (Page 486)

7-48 Troubleshooting
7000A-UM150F-EN-P – June 2013 7000 “A” Frame
WARNING
MESSAGE
WARNING
CODE
DESCRIPTION RECOMMENDED ACTIONS
Tach Power 35 +15VDC from the DC/DC power supply,
sensed on the CIB, is less than the 95%
alarm level. – Check the output of the DC/DC power
supply
– Check the wiring from the power supply
to the CIB
– Verify the tachometer/encoder wiring
Tach Reversed 34 The drive has sensed that the 2 channels
(generally A and B) are reversed. – Set the parameter Tachometer Select to
„None‟ and verify the parameter
Tachometer Feedback (Line or
Motor)shows the reverse speed
– Reverse the tachometer channels
Temp Feedback Ls
(C-Frame Only)
152 While Running, the drive has detected a
missing temperature feedback. A missing
sensor can be interpreted as either 0°C or
over 100°C, and both are unrealistic values.
– Verify sensor is completely seated
properly on TFB.
– Measure sensor resistance.
– Replace if necessary.
– NOTE: This is a warning because the
drive should not fault on the loss of the
signal while running. There is no
imminent danger to the drive, but the
user needs to be aware that there is a
temperature feedback signal missing.
Tuning Abort 49 Autotuning was unable to complete the
commanded autotune test in a preset time
limit of 2 minutes. – Investigate why the Autotune Test
aborted, and Retry Autotune Test
– Verify Autotune default parameters are
sufficient to complete test
– Attempt Manual Tuning
UPS Battery Low 106 Warning that the UPS Battery is low. – This is not very useful as the UPS
battery low occurs at the point where the
UPS can no longer run and a fault is
initiated.
UPS Failed 107 The UPS has had an internal failure. This is
a warning because we do not want a
signal/wiring error to fault the drive. We are
relying on the subsequent power supply
faults to protect the drive.
– Investigate the cause for the UPS failure
– Check batteries
– Verify input voltage/UPS wiring
– Refer to UPS manual
– Replace UPS if required
UPS on Battery 105 Warning that the UPS is now on battery
power – Check for the reason that the UPS was
required, and rectify the situation before
the battery power expires
UPS on Bypass 104 Warning that the UPS is now on Bypass.
This occurs when the drive has switched to
UPS, but a UPS fault has forced the system
to switch to Bypass, if available.
– Investigate cause for initial transfer to
UPS, and correct.
– Then investigate why the UPS failed and
was forced to go to bypass
USART Power
Loss
110 Warning that USART voltage detected on
the CIB is low. – Check all DC/DC voltages test points on
CIB (+5V, +15V, +3.3V)
– Replace DC/DC PS or CIB as required.