4742-E P-21
SECTION 1 INVERTER UNIT (MIV UNIT)
4-3-2. Alarm Number Table
Eeospcsa1016
[Hex] indicates hexadecimal notation.
No.
Name
Description/Alarm Code
Corrective Action
01
Power supply
unit error
An error occurred with the power supply unit.
0000XYZZ
X = Alarm number
0: DC voltage alarm
1: AC input voltage alarm
2: Control power error
3: Control status error
4: Regeneration overload
5: Heat sink overheat
6: CPU error
7: Spare
Y = Power supply unit status
bit 3 = 1 : An alarm occurred with the power supply unit
bit 2 = 1 : DC power is being supplied
bit 1 = 1 : OPRON input is close
bit 0 = 1 : PWON input is close
ZZ = Alarm data
If X (alarm number) = 0
Indicates DC voltage by 7F[Hex] = 500 V.
If X (alarm number) = 2
1: +5 V voltage error
2: +12 V voltage error
3: -12 V voltage error
If X (alarm number) = 3
1: Over current in power line
2: Power device error
3: Converter bridge short-circuit
4: Regeneration error
If X (alarm number) = 4 Not defined
If X (alarm number) = 5 Not defined
If X (alarm number) = 6 Not defined
Check the source
voltage.
Check the operation
conditions.
Check the error No.
of MPS/MPR unit.
Change the MPS/
MPR unit.
Change the MIV unit.
02
Converter link
error
An error occurred with the converter link and monitoring of the
power supply unit was disabled.
X00000YY
X = 0 Communication error
YY = Communication status
X = 1 Time out error (communication is interrupted)
YY=0
Change the con-
verter link cable.
Change the MIV unit.
Change the MPS/
MPR unit.
03
Inverter DC
bus voltage
error
DC bus voltage of the inverter unit raised or lowered exces-
sively.
XXXXYYYY
XXXX = Over voltage value
[In case of MCS]
(Displayed when 7FE0 [HEX] = 500 V for MCS)
[In case of MCSII]
(Displayed when 7FE0 [HEX] = 550 V for MCS II)
YYYY = Under voltage value
[In case of MCS]
(Displayed when 7FE0 [HEX] = 500 V for MCS)
[In case of MCSII]
(Displayed when 7FE0 [HEX] = 550 V for MCS II)
Check the source
voltage.
Change the MIV unit.
Change the MPS/
MPR unit.
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