
Page - 70/83 AF2ZP0CE - ACE2 350/450 - User Manual
Hardware fault 20 The Mosfets driver
are not switched off
with Watch-dog
signal in alarm
status
MC is not closed ,
EB is applied,
Traction/Pump
stopped
Start-up Key re-cycle
Hardware fault 21 The EB/AUX driver
is not switched off
with Watch-dog
signal in alarm
status
MC is not closed ,
EB is applied,
Traction/Pump
stopped
Start-up Key re-cycle
Hardware fault A1 The MC driver is
not switched off
with Watch-dog
signal in alarm
status
MC is not closed ,
EB is applied,
Traction/Pump
stopped
Start-up Key re-cycle
Coil shorted MC
MDI code allarm 76
Shortcircuit on MC
coil
MC is opened,
EB is applied,
Traction/Pump
stopped
Start-up
(immediately after
MC closing),
stand-by, running
Traction/Pump
Request
Coil shorted EF
MDI code allarm 68
Shortcircuit on
EB/AUX coil
MC is opened,
EB is applied,
Traction/Pump
stopped
Start-up
(immediately after
MC closing), stand-
by, running
Traction/Pump
Request
Contactor open
MDI code allarm 77
The MC coil has
been driven but MC
does not close
MC is opened ,
EB is applied,
Traction/Pump
stopped
Start-up
(immediately after
MC closing),
Stand-by,
running
Traction/Pump
Request
Logic failure #2
MDI code allarm 55
Motor phases
voltage feedback
circuits are
damaged
MC is opened ,
EB is applied,
Traction/Pump
stopped
Start-up
(immediately after
MC closing)
Traction/Pump
Request
Contactor driver
MDI code allarm 75
Driver of MC coil is
damaged (not able
to close)
MC is opened (the
command is
released), EB is
applied,
Traction/Pump
stopped
Stand-by, running Traction/Pump
Request
Aux Driver Open Driver of EB/AUX
coil is damaged
(not able to apply
the brake)
MC is opened, EB
is applied,
Traction/Pump
stopped
Stand-by, running Traction/Pump
Request
Encoder Error
MDI code allarm 82
Problem on the
encoder reading
MC is opened, EB is
applied,
Traction/Pump
stopped
Running Traction/Pump
Request
Wrong Ram
Memory
MDI code allarm 71
The program checks
the contents of main
RAM registers and
find a “dirty value”
MC is opened, EB is
applied,
Traction/Pump
stopped
Continuous Key re-cycle
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