16 Rockwell Automation Publication 7000-TG002J-EN-P - March 2015
Chapter 1 Fault Messages
X Control 5V Loss 54 There is a single DC/DC power in each drive. It receives 56VDC
input and produces various levels of DC voltages on the
output. One of these output voltage level is 5Vdc. It is a critical
voltage level for the drive processors. This fault message
indicates the 5Vdc produced by the DC/DC power supply has
failed. The drive monitors the 5Vdc by measuring this
voltage.The 5Vdc is connected to the ACB terminal JX 1-2.
• Check connections, test the rail voltage level and test for shorts.
• Replace the DC/DC converter if this problem remains.
X 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.
X 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.
X X CoolantLevel Low
(C-Frame Only)
69 The measured coolant level within the reservoir has dropped
below the second (lowest) level sensor and the drive has
faulted. This sensor is set for the minimum level required to
ensure there will be no air drawn into the system through the
reservoir.
• Verify that the drive cooling system does not have any coolant leaks – repair if found.
• Add the proper amount of de-ionized water to get the level above the warning sensor (de-
ionized water will evaporate, not the glycol).
X X CoolantTemp High
(C-Frame Only)
67 The measured coolant temperature has exceeded 54 °C
(129 °F). The drive detected that the coolant temperature has
exceeded the trip setting in P483. Ensure that the heat
exchanger fans are working properly and the room ambient is
adequate for the drive operation.
• 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 that the drive is operating within specified load and ambient conditions.
X X CoolantTemp Low
(C-Frame Only)
66 The measured coolant temperature has dropped below 4 °C
(40 °F). It will not clear until the coolant temperature reaches
10 °C (50 °F). This fault will only occur if the drive is not
running, to stop you from starting with a low coolant
temperature. If you are already running when the coolant
level drops, you will only get a warning.
• Verify that the thermostatic bypass valve (V10) was not left open.
• Verify that the ambient temperature within the drive control room is not below
specification.
• Warm up the control room ambient to get the drive to an operational level.
X CRC Fault 601 The number of Cyclic Redundancy Check (CRC) faults has
exceeded the maximum allowable level.
• Check the DCSL communication wiring and shielding.
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Fault Message Fault Code Description Recommended Action(s)
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