h/p/cosmos 150/50 mercury Operating And Service Manual page 120

E51 Error of
frequency inverter/ motor regulation
Signal error between MCU5 and
frequency inverter.
Only applicable at digital control
(RS485) of MCU5/frequency inverter
abbreviations: UT = UserTerminal / FI = Frequency Inverter
Indication
display
UT
00
10
11
12
20
21
22
30
31
40
52
60
70
80
81
90
A1
B0
B1
B2
C0
F1
F6
F7
FD
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=
§ $ %
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the frequency inverter (for example "b1" of error message "E.PUE" =
PU disconnection).
N
N
N
N
N
N
N
Indication Meaning of the error code related to the frequency inverter
display FI (motor drive control) function/ status
- No alarm
E.OC1 Overcurrent shut-off during acceleration
E.OC2 Overcurrent shut-off during constant speed
E.OC3 Overcurrent shut-off during deceleration or stop
E.OV1 Regenerative overvoltage shut-off during acceleration
E.OV2 Regenerative overvoltage shut-off during constant speed
E.OV3 Regenerative overvoltage shut-off during deceleration or stop
E.THT Inverter overload shut-off (electronic thermal relay function)
T.THM Motor overload shut-off (electronic thermal relay function)
E.FIN Fin overheat
E.ILF Input phase loss
E.OLT Stall prevention
E.BE Brake transistor alarm detection
E.GF Output side earth (ground) fault overcurrent
E.LF Output phase loss
E.OHT External thermal relay operation
E.OP1 Communication option fault
E.PE Parameter storage device fault
E.PUE PU disconnection
E.RET Retry count excess
E.CPU CPU fault
E.1 Option fault
E.6 CPU fault
E.7 CPU fault
E.13 Internal circuit fault
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E 51 FU flashing
HELP flashing
shows the hexadecimal number of the original error code of
Check RS485 plug at the MCU5 control board.
Check RS485 plug at the frequency inverter.
Check RS485 plug at the optocoupler board.
Frequency inverter may be defective.
Power supply may be too weak because of an extension cable
etc.
Check power supply and power cord.
Contact authorized service engineer.
created 04.05.2012 printed 04.05.2012
trouble shooting
page: 120 of 191