Zapi AC-2, User Manual

Page: 58 / 64

- CONTACTOR CLOSED
The controller checks if the LC contact is closed when the coil isn’t
driven, trying to discharge the capacitor bank. If they don’t discharge, the
fault condition is entered. It is suggested to check the contactor contact, if
it is mechanically stuck or pasted.
19) AUX OUTPUT KO
The µP checks the driver of the electromechanical brake. If the status of the
driver output does not correspond to the signal coming from the µP, the
alarm is signalled. Replace the logic.
20) HIGH TEMPERATURE
Controller temperature is greater than 75 °C. The maximum current is
reduced proportionally to the temperature increase. The controller stops at
100 °C.
If the alarm is signalled when the controller is cold:
A) check the wiring of the thermal sensor;
B) thermal sensor failure;
C) logic
failure.
21) MOTOR TEMPERATURE
This warning is signalled if the motor temperature switch opens (digital
sensor) or if the analog signal overtakes the cut off level. If it happens when
the motor is cold, check the wiring. If all is ok, replace the logic board.
22) THERMIC SENSOR KO
The range of inverter temperature sensor is always checked and a warning is
signalled if it is out of range.
When this alarm is signalled, check the connection of the sensors.
23) MOT. TH. SENSOR KO
The range of motor temperature sensor is always checked and a warning is
signalled if it is out of range.
When this alarm is signalled, check the connection of the sensors.
24) CAN BUS KO
The diagnosis of the CAN-BUS line is present only if the inverter uses this
link (depends on the software version). It is signalled if the inverter does not
receive any message from the CAN-BUS line. First of all, check the wiring. If
it is ok, the problem is on the logic board, which must be replaced.
25) SAFETY
This alarm is signalled when the "SAFETY" input is open. The "SAFETY"
circuit gets active and opens the drivers of LC and EB and stops the
machine. Verify the “SAFETY” input connection.
26) SAFETY KO
This alarm is present in combi systems (tr pump). If a stopping alarm
is detected on the pump, the traction also stops. The failure must be looked
for in the pump inverter.
27) BATTERY LOW
If the "battery check" option is ON, a battery discharge algorithm is carried
out. When the charge level is 10%, this alarm is signalled and the current is
reduced to the half of the programmed level.
28) WRONG SET BATT.
When the key is turned ON, the controller check the battery voltage and
verifies it is within a window around the nominal value. Replace the battery
with a correct battery.
29) WAITING FOR NODE
The controller receives from a remote module via CAN Bus the information
that it isn’t possible to close the LC (the module isn’t ready locked in an alarm
state). Verify the other modules to determinate in which of them there is the
problem.
Page - 58/64 ADEZP0AE - AC-2 INVERTER - User Manual