Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE - Manual (Page 278)

10-36 TROUBLESHOOTING
1557-UM050F-EN-P – June 2013
Drive Faults
Fault
Code #
FAULT
MESSAGE
F Description
F44 Over temp 5 F Heatsink over temperature is present, 85 degrees centigrade exceeded.
F45 Over temp 6 F Heatsink over temperature is present, 85 degrees centigrade exceeded.
F46 Over temp 7 F Heatsink over temperature is present, 85 degrees centigrade exceeded.
F47 Firmware rev F
Firmware in the two drive control boards or the communication
processor board is not compatible.
F256 Drv o/l warn W The drive overload protection has reached 50% of the trip value in
P163.
F257 Mtr o/l warn W The motor overload level has reached 50% of the trip value in P179.
F258 Line u/v W The line voltage has fallen below the level in P167 for the duration in
P168.
F259 Line rev seq W The drive attempted to make a synchronous transfer with reverse
sequence line voltage. Sync transfer cancelled.
F260 Input open W The input contactor is open when it is requested to be closed
F261 Input closed W The input contactor is closed when it is requested to be open
F262 Output open W The output contactor is open when it is requested to be closed.
F263 Output closed W The output contactor is closed when it is requested to be opened.
F264 Bypass open W The bypass contactor is open when it is requested to be closed.
F265 Bypass closed W The bypass contactor is closed when it is requested to be open.
F266 Tach loss W The tach signal has been lost to the tach feedback board.
F267 H/w o/c warn W Hardware overcurrent warning. The DC O/C trip level (P169) has
been exceeded. A GTO gate freeze will be initiated.
F268 H/w o/v warn W Hardware overvoltage warning. The DC O/V trip level (P187) has
been exceeded. A GTO gate freeze will be initiated.
F269 Tach rotn W Phase A and B of the tachometer is interchanged.
F270 Line sync W The line converter gating has lost synchronization with the line
voltage.
The drive will shut off momentarily and restart.
F271 dc\dc warn W The dc\dc converter has reported a failure in one of the redundant
outputs. The threshold for fail condition is 95% of rated output
voltage.
F272 Rated rpm W Rated motor rpm parameter P26 has been set to an invalid value.
F273 PWM too high W The PWM frequency parameter P155 has been set too high for the
drive ratings. It will be changed to a lower value.
F274 Rated I fbk W The current feedback scaling is out of range.
F275 Filter cap W The per unit filter capacitor is out of range. Value must fall within the
range 0.25 per unit to 0.75 per unit.
F276 Not used
F277 Not used
F278 Not used
F279 Not used
F280 Not used
F281 Fan Loss W The output of the static pressure sensor fell below the level in P175
for the duration in P176.