Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 441)

Troubleshooting 7-19
7000 “B” Frame 7000-UM150I-EN-P – June 2013
FAULT
MESSAGE
FAULT
CODE
DESCRIPTION RECOMMENDED ACTIONS
Pressure Loss
(C-Frame Only)
223 The measured system pressure has
dropped below a preset trip level. The
standard operating pressure is around
50psi. The pressure switch is not designed
to be an accurate measure of pressure, but
is designed as a Pressure/No Pressure
indication. Typically anything less than
20psi will activate this switch.
– Check that the pumps are operating
– Verify that there are no leaks in the
system
– Verify that there is no blockage in the
system
Printer USART 242 CIB Hardware Fault – CIB Hardware Problem
– Cycle control Power to the drive, and if
the problem still exists the board should
be replaced
Pump/Fan Pwr Off
(C-Frame Only)
230 The control power to the pumping system
and the heat exchanger fans is not present. – 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
R Neutral OC 206 Neutral Resistor Over Current.
This is applicable to Direct to Drive only – Check the neutral R for open
– Check devices on rectifier and inverter
for short circuits
– Check the Line and Motor Filter
Capacitors for short between Phase-to-
Neutral or Phase-to-Phase. Refer to
Chapter 6 of the User‟s Manual for
detailed instructions on Testing Filter
Capacitors.
Rect Heatsink FO 198 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
Rect Temp ChB FO 199 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.
Rec HS Low Temp 204 If the measured temperature RHeatsink
Temp C (P254) is less than 2°C, and the
drive is not running, the drive will display this
fault. – Verify that the ambient in the control
room is not below 2°C
– Verify power to the TFB
– There could be a mechanical problem
with the temperature sensor or with the
cable feeding the signal back to the TFB
– Swap with the inverter hardware to
identify the bad component
Rec ChB Low
Temp
205 If the measured temperature Temp R Ch B
C (P556) is less than 2°C, and the drive is
not running, the drive will display this fault.
This is not enabled on most drives, and the
parameter is a high-level parameter.