© Mitsubishi Forklift Trucks 2013. All
© Mitsubishi Forklift Trucks 2013. All rights reserved.rights reserved. Revision: BRevision: B
Document ID: 615023Document ID: 615023
30 (244)30 (244)
PBV20N2 PBV20N2 Service Service ManualManual
4.3.7 Sensors4.3.7 Sensors
An inductive seAn inductive sensor is an electronsor is an electronic proximity senic proximity sensor, which detensor, which detects metallic objcts metallic objectsects
without touching them.without touching them.
The sensor consists of an The sensor consists of an induction loopinduction loop. Electric current generates a magnetic field. Electric current generates a magnetic field
that collapses, thus generating a current that falls asymptotically toward zero from itsthat collapses, thus generating a current that falls asymptotically toward zero from its
initial level, when the electricity input ceases. The inductance of the initial level, when the electricity input ceases. The inductance of the loop changesloop changes
according to the material inside it and, since according to the material inside it and, since metals are much more effective inductorsmetals are much more effective inductors
than other materials, the presence of metal increases the current flowing through thethan other materials, the presence of metal increases the current flowing through the
loop. This change can be detected by sensing circuitry, which can loop. This change can be detected by sensing circuitry, which can signal to some othersignal to some other
device whenever metal is device whenever metal is detected.detected.
Figure 15. Sensor locationsFigure 15. Sensor locations
1.1. Tiller sensorTiller sensor
2.2. Side guard sensorsSide guard sensors
3.3. Operator’s platform sensorsOperator’s platform sensors
The truck uses the The truck uses the following sensors:following sensors:
•
• Tiller sensorTiller sensor
•
•
Four side guard sensors, two on each side guardFour side guard sensors, two on each side guard
•
•
Operator’s platform sensors, two on Operator’s platform sensors, two on the right-hand sidethe right-hand side
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