Stiga e-PARK 220 Workshop Manual page 80

WORKSHOP MANUAL
e-PARK 220
b) WARNING Messages
Code Definitions
13 EEPROM KO
PUMP I=0
52
EVER
HIGH TEMPER-
62
ATURE
BATTERY LOW
65
MOTOR TEM-
PERATURE
INCORRECT
79
START
80 FORW+BACK
PEDAL WIRE
86
KO
9 - ELECTRONIC MANAGEMENT - BATTERY
Probable Cause and Consequent Action
• Cause: This is due to an HW or SW defect in the integrated non-volatile memory that
supports the controller parameters. This alarm does not prevent the machine opera-
tions, but the machine will operate with default values.
• Solution: Try executing the CLEAR EEPROM command (refer to the Console
manual). Turn the key off and check the result. If the alarm persists, the controller must
be replaced. If the alarm disappears, the previously saved parameters will be replaced
by the default parameters.
• Cause: This test is performed when the pump motor is running and verifies that the
current feedback sensor is not always locked at 0.
• Solution:
- Check for continuity in the motor connection. If the motor connection is open, current
does not flow and the test fails, resulting in an error code.
- If everything is in order with the motor, the problem may be with the current sensor or
its circuit.
• Cause: This alarm occurs when the temperature of the base plate is above 85 °C. As
a result, the maximum current decreases proportionally as the temperature increases
from 85° to 105°. At 105° the current is limited to 0 Amp.
• Solution: Improve the air cooling of the controller. If the alarm appears when the
controller is cold, the possible causes are a fault in the thermal sensor or in the mother-
board. In this case, the controller must be replaced.
• Cause: The alarm occurs when the battery charge has a caKZTPulated value less
than or equal to 10% of the full charge and the BATTERY CHECK setting is different
from 0 (refer to the "SET OPTION" menu).
• Solution: Recharge the battery. If the problem persists, measure the battery voltage
with a voltmeter and compare it to the value in the BATTERY VOLTAGE parameter. If
the values are different, adjust the value of the ADJUST BATTERY function.
• Cause: This warning appears when the temperature sensor is open (if digital) or has
exceeded the 150°C threshold (if analog).
• Solution: Check the thermal sensor inside the motor (use the MOTOR TEMPERA-
TURE value in the TESTER menu); check the ohmic value and the sensor wiring. If
the sensor is OK, improve the air cooling of the motor. If the warning persists when the
motor is cold, the problem is inside the controller.
• Cause: This warning indicates an incorrect start sequence.
• Solution: Possible causes of this alarm are (use values in the TESTER to facilitate
troubleshooting):
- A key-active transport demand on ON
- Operator presence sensor active with key ON. Check the wiring. Check the micro
switches. This may also be caused by an incorrect sequence on the part of the opera-
tor. The mechanism may also have failed; if all of the above conditions have been met
without finding the cause, replace the controller.
• Cause: This alarm occurs when both motion commands (forward and reverse) or
BACKING FOR and BACKING REV are active at the same time.
• Solution: Check the wiring of the inputs of the Forward and Backward motion
command and the inputs BACKING FOR and BACKING REV (use the values in the
TESTER to facilitate troubleshooting). Check the micro switches for faults. A failure of
the mechanism is also possible. Once you have determined that the transport request
and contact switches are working properly and that the wiring is not a problem, you
need to replace the controller.
• Cause: The SW continuously checks the connection of the two potentiometer power
supply ends in the throttle. The test consists in reading the voltage drop on a diode
connected between NPOT (CNA#30) and GND and cascaded to the potentiometer:
if the potentiometer disconnects on PPOT (CNA#25) or NPOT, this diode does not
receive current and the voltage on the NPOT connection collapses.
The alarm appears when the voltage at the NPOT is less than 0.3V. This alarm also ap-
pears when the voltage at the NPOT is higher than 2Vdc (also check for diode break-
age).
• Solution: Check voltage at NPOT and potentiometer connections.
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