Sicam SBM 855 Notice Originale page 43

Faults Causes
19 Input signal of right measurement sensor
lower than that of left sensor
20 1. Pedal pressed during measurement
2. Irregular rotational speed of motor
3. Wheel speed below minimum value
21 The PCB has detected an excessively high wheel speed
with the wheel guard open (shaft rotating at high speed
although the machine has not been started): Power sup-
ply unit is deactivated
22 Irregular measurement sensor signals
23 Vernier caliper not in rest position
EEE EEE
1. Two keys pressed simultaneously
2. Display PCB defective
Sicam snc società unipersonale
Faults | SBM 855 | 43
Remedy
Interchange the connections of the two measure-
ment sensors.
1. Do not press pedal whilst motor is in operation.
2. Make sure the SBM 855 is not subjected to any im-
pact during measurement.
3. Check mains voltage (probably too low).
1. Switch off the SBM 855 .
2. Lower the wheel guard, switch the SBM 855 on
again without moving the wheel.
3. If the error message persists, contact customer
service.
1. Check that the light barrier PCB is protected
against light and provide a cover if necessary.
2. Check and if necessary replace the light barrier
PCB.
3. Check and if necessary replace the display PCB.
1. Move the vernier caliper to rest position.
2. Repeat the calibration of the electronic vernier ca-
liper
1. Only ever press one key at a time.
2. Check and if necessary replace the display PCB.
en
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656 229 2010-11-22