GE Industrial Solutions DV-300 DC Quick Start - Manual (Page 30)

GEH-6129
—————— Quick Start up guide ——————
QS
30
15. QUICK TROUBLESHOOTING
15a. Regulation card testpoints
Test point name and description notes
XY5 +5V , processor power supply
XY6 GNDD, +5V processor power supply ground
XY7 GNDD, +5V processor power supply ground
XY8 +24V, 24 VDC power supply
XY9 GNDV, 24 VDC power supply common
XY10 GNDA, 15 V power supply common
XY11 -15 V power supply
XY12 +15 V power supply
XY17 current feedback, scaling .61V = 1 P.U. of the drive rating
XY18 common
XY19 armature voltage feedback
XY20 select output
XY21 attenuated AC input signal, V-U
XY22 attenuated AC input signal, V-W
15b. Failure messages and troubleshooting hints
Message Possible causes Hints
Failure Supply blown power supply fuse, bad power supply check 24 V I/O for shorts to ground replace power
supply fuse, remove I/O connectors to isolate
wiring
Undervoltage Parameter [ Undervoltage thres] set too high check parameter [Undervoltage thres] setting
AC line has excessive noise or ringing missing an incoming reactor
AC line is soft too much incoming reactor/transformer impedance
bad power connections check all power connections
the drive has been enabled without bridge power AC input contactor didn’t pick up
Overvoltage Too much voltage on the DC output parameter [max output voltage] set too low
field current set too high for speed check field current parameters
this trip occurs at 1.2 times parameter [max crossover % set too high
output voltage]
Heatsink heatsink temperature is too hot failure of a door fan, or drive fan
heatsink is dirty or clogged
loss of fan power
failed sensor
Overtemp motor failure in the motor overtemp circuit input TB 79 & 79 is open circuit,
bad wiring , thermistor, or klixon
motor is too hot motor blower is failed, or off
ventilation is blocked
overloaded motor, improper setup
ambient temperature is too high
self cooled motor running at low speeds at high
loads