M&B Engineering WB 255-N Manuel D'instructions page 47

MALFUNCTIONING, CAUSES, TROUBLE-SHOOTING
DISPLAY MALFUNCTIONING
Err 11 During launch Err 11 appears on the display
Err 17 At end of launch Err 17 appears on display
Err 18 Err 18 appears on display
Err 20 During measuring cycle Err 20 appears on display: the wheel
speed has gone below the minimum for measurability.
Err 21 During measuring cycle Err 21 appears on display: possible
electrical fault
Err 22 During the launch Err 22 appears on display
Err 23 When the START button is pressed the display reads Err23
EEE EEE EEE EEE appears on the display
solutions creator
CAUSES
1. Passage through zero sensor defective in optoelectronics
2. The motor will not turn
1. Weight out of regulation field (weight necessary for balancing the wheel
is above 250 grams)
1. Wheel data not set.
1. 1 Brake pedal operated during the measurement
2. Motor rotation speed irregular.
1. The electronic card has found a condition of danger connected to a too-
high wheel speed during an inactive machine phase (the shaft rotates at
high speed without the operator having pressed the START command); the
electric power is deactivated.
1. Some fault in the optoelectronic signals.
1. The gauge for measuring distance is not in the neutral position.
1. Two keys pressed together.
2. Keyboard defective.
TROUBLE-SHOOTING
1.
a) check optoelectronic card connection.
b) check the optoelectronic card is protected from daylight and cover if
necessary;
c) if the defect persists check and if necessary replace the optoelectronic
card.
2. Check electrical part.
1.
a) Check that the wheel is correctly fixed on the flange;
b) find (in any case) the external position, apply a 100 gram weight and
launch a run.
1. Set the wheel data before starting the measuring cycle.
1. Avoid pressing the brake pedal when the motor is operating.
2. beware of knocking the machine during the measuring cycle. check mains
voltage (probably low).
1. Switch off the machine, lower the guard and switch the machine back on
without moving the wheel; if the error persists, check (and replace if neces-
sary) the electric or electronic part (control panel or encoder card).
1.
a) check the optoelectronic card is protected from daylight and cover if
necessary;
b) if the defect persists check and if necessary replace the optoelectronic
card.
c) check and if necessary replace the control panel electronic card.
1.
a) Check that the gauge is in the neutral position.
b) Check the A5 analogue figure (approx. 200).
c) Repeat the gauge calibration procedure.
1. Press one key at a time.
2. Check and if necessary substitute the control panel electronic card.
ENGLISH
47