Pfaff 034554030 Betriebsanleitung Seite 37

Electric Stacker with Electric Travel
English
EGV ESL EPH
AL 53 - STBY I HIGH
This test is made during the initial diagnosis and at
standby. The test verifies that the current is zero. This
alarm disables the machine.
Possible causes:
a) Defective current sensor.
b) Logic failure. First replace the logic. If fault remains
replace the power unit.
AL 57, AL 58 - HIGH FIELD CUR, NO FIELD
CUR
Problem detected with the field winding current.
Possible causes:
c) Failure of the field current sensor:
d) Field cables not connected or incorrectly connected.
e) Failure of the Field Power Unit.
AL 60 - CAPACITOR CHARGE
This check is made during the initial diagnosis. This
alarm is generated if the Capacitors are not charged
within 500ms after the Key Switch is closed. Probable
cause is failure inside the power block.
AL 62 - TH PROTECTION
If the temperature of the fan rises higher than 70°C, this
alarm is generated.
The fan current is reduced in proportion to the increase
in temperature. At 80°C the fan totally stops. If the tem-
perature of the fan is <-10°C, this alarm is also gener-
ated and the current is reduced by 80 %. If this alarm is
displayed when the fan is temperature is the same as
ambient or better than zero degrees:
a) Check the connection of the temperature sensor.
b) The temperature sensor may be defective.
c) The logic may be defective.
AL66 - BATTERY LOW
This alarms is generated when the battery becomes 50
% discharged from the nominal value.
AL 75, AL 76 - CONTACTOR DRIVER, COIL
SHORTED DRIVER SHORTED.
This alarm is generated if the accelerator output voltage
differs more than 2V from the acquired minimum during
the PROGRAM VACC.
Possible causes:
a) The track of the potentiometer has become open.
b) The potentiometer is not wired correctly.
c) The potentiometer itself is defective.
d) The values set in PROGRAM VACC routine have not
remained or made correctly.
Design changes under reserve!
F8.1.20
AL 79 - INCORRECT START
Alarm generated by an incorrect Starting Sequence.
Possible causes:
a) The enable microswitch has welded or failed.
b) Error in the starting sequence from the operator.
c) Error in the wiring.
AL 86 - PEDAL WIRE KO
This alarm is generated if potentiometer or wiring fault is
detected. (NPOT or PPOT are open circuit
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