22 Rockwell Automation Publication 7000-TG002J-EN-P - March 2015
Chapter 1 Fault Messages
X GatePwrSup V Low 130 This alarm is for SGCT based drives and indicates a problem
with the gate power supply, which is being monitored using
the temperature feedback board (TFB). There are two types of
TFBs used in the PowerFlex 7000. The original TFB only
provides temperature feedback. The 3
rd
generation
temperature feedback board (TFB3) provides temperature
feedback and SGCT gate power supply level in real time. See
parameters 796, 805 and 807 in the Thermal Protection group
to see the real time power supply level.
See Appendix A for part numbers of the TFB.
• Removing and inserting the fiber-optic cable into the TFB may cause the drive to fault on
Gate Power Supply V Low. Cycle power to reset this event.
• Check the 20Vdc input to the gate driver board. Replace IGDPS if the voltage output on any
channel is outside 20V+/-2% range.
X Gnd OvrCurrent 114 The ground current (P367) measured on the ground fault CT
has exceeded the value in Gnd OvrCur Trp (P171) for the
duration set in Gnd OvrCur Dly (P172). The GFCT (zero-
sequence CT) is not installed in all drives.
• Verify the burden resistor has not opened. On the ACB measure J7 pin 3-5, expect 500
ohm.
• Verify that parametersP171 and P172 are set properly.
• Check for any imbalance in line currents.
• Electrically isolate the drive from the motor and place drive in IDC Test mode. If P367 is
zero amps, then ground fault most likely located in motor cables or motor. If P367 is a non-
zero value, examine drive for potential source of ground fault.
• Megger the drive and motor and input transformer/AC line reactor to search for a ground
fault in the system.
• Check CMC and neutral resistor. See Technical Note PF7000_GEN-65, “Testing of Common
Mode Chokes”.
X HECS Power Loss 56 The power supplied to the motor Hall-Effect current sensors
(±24VDC) is monitored on the control board and will fault the
drive if the voltage is out of tolerance.
• Verify the DC voltage on the DC/DC supply, at the ACB board, and at the Current Sensors
[HECS].
• Check the current sensor wiring and ensure all connections are per the electrical drawing.
X X X High AirPressure 467 High air pressure reading coming back from analog air
pressure transducer located between the converter sections.
The pressure sensor detects blockage of air flow through the
heatsinks of the power cage.
• Ensure that the pressure sensor is working, and there are no obstructions to the path of the
exhaust airway or through the heatsinks.
• Check for cooling fan abnormal operation.
• Verify if the trip setting (P925) matched factory recommended value. P925 is set to 1.0V
above nominal value displayed in P447. Tech note PowerFlex 7000_4Gen_Gen23
describes actions to take for 2400V applications when upgrading drive software from
7.00x to 8.00x or higher.
X HP XIO NotAssgnd 553 A required XIO card has not been assigned based on the
selection of drive model.
• This fault is related to Heatpipe drive. Verify that the parameter P781 is set correctly
(proper XIO card is assigned to the parameter).
X IdcHECSConnector 191 The drive has detected that the Idc HECS connector (J7) is not
connected properly.
• Turn off the control power and verify that connector and the interlock are in place.
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Fault Message Fault Code Description Recommended Action(s)
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