MT6M15962a
The truth table when a failure occurs are shown in Table 3-3.
Alarm
factor
IGBT
Alarm output signal
Warning
output
signal
U-
phase
V-
phase
W-
phase
X,Y,Z-
phase
B-
phase
ALM
-U
ALM
-V
ALM
-W
ALM
-Low side
WNG
U-
phase
OC
OFF
*
*
*
*
Low
High
High
High
*
SC
OFF
*
*
*
*
Low
High
High
High
*
UV
OFF
*
*
*
*
Low
High
High
High
*
T
jOH
OFF
*
*
*
*
Low
High
High
High
*
V-
phase
OC
*
OFF
*
*
*
High
Low
High
High
*
SC
*
OFF
*
*
*
High
Low
High
High
*
UV
*
OFF
*
*
*
High
Low
High
High
*
T
jOH
*
OFF
*
*
*
High
Low
High
High
*
W-
phase
OC
*
*
OFF
*
*
High
High
Low
High
*
SC
*
*
OFF
*
*
High
High
Low
High
*
UV
*
*
OFF
*
*
High
High
Low
High
*
T
jOH
*
*
OFF
*
*
High
High
Low
High
*
X,Y,Z-
phase
OC
*
*
*
OFF
*
High
High
High
Low
*
SC
*
*
*
OFF
*
High
High
High
Low
*
UV
*
*
*
OFF
*
High
High
High
Low
*
T
jOH
*
*
*
OFF
*
High
High
High
Low
*
Y-
phase
T
jW
*
*
*
*
*
High
High
High
High
Low
B-
phase
OC
*
*
*
OFF
OFF
High
High
High
Low
*
SC
*
*
*
OFF
OFF
High
High
High
Low
*
UV
*
*
*
OFF
OFF
High
High
High
Low
*
T
jOH
*
*
*
OFF
OFF
High
High
High
Low
*
© Fuji Electric Co., Ltd. All rights reserved.
3. Truth table
3-8
Table 3-3 Truth table
* Dependent on the input signal.
※
P639 and P629 do not have ALM output for the upper arm (U, V, W phase).
The brake phase can operate normally even if the lower arm X, Y, and Z phases are under protection.
When the protection operation is activated in the brake phase, all the lower arm phases including the
brake phase go into protection state.
