Mec Speed Level 2684 ES, Руководство по обслуживанию и запасным частям

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“3084 Speed Level™ Sigma Lift” Service and Parts Manual November 2009
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A L I B R A T I O N
The EZ-Cal hand held device (MEC part # 90888) is required to access the GP400 for
troubleshooting and calibration.
The GP400 processor relies on angle and pressure sensors to monitor machine position
at all times. These sensors send varied voltages to the GP400 that relate directly to their
respective position. The calibration process is the means by which the GP400 equates
these voltages to actual machine position.
For example, the Angle Transducer, used to monitor platform elevation, varies its output
between 1 and 4 volts through a 140 degree rotation. During calibration the GP400 may
learn that 1.8 volts (fictional number used for explanation) represents the fully stowed
position and 3.6 volts represents the fully elevated position and therefore voltages
between those figures relate to various heights in between.
All machines are calibrated at the factory and should not require calibration unless the
GP400 is replaced or if the GP400 displays a code that alerts to the need to recalibrate.
Tilt Sensor calibration is required on all machines regardless of destination or certification
(ANSI or CE) and must be performed first.
ANSI calibration follows Tilt calibration for machines not equipped with an overload protec-
tion system and consists of only height calibration.
CE calibration is required of all machines outfitted with an Overload Protection System as
required for CE certification. All steps in the CE calibration must be performed in the
proper sequence before the GP400 will recognize complete and proper calibration. Begin
with the ANSI/CE Tilt Sensor Calibration, then proceed to the CE Calibrations section.
If the calibration procedure is performed incorrectly or there is a failure in one of the moni-
tored circuits during the calibration, the GP400 will not allow the operator to continue with
the calibration process. An error message will display on the EZ-cal indicating the reason
for the interruption.
Additional details of these error messages can be found at the end of the calibration
instructions.
This and other procedures can only be performed using an EZ-Cal scan tool. If you do not
have an EZ-Cal, please contact MEC to obtain one.
ANSI/CE Tilt Sensor Calibration
Correctly performing the following procedure will ensure that your machine will continue to
auto-level correctly and operate safely.
The automated leveling system relies on the information provided by three sensors:
• The platform tilt sensor (Platform CAN Tilt Angle Transducer) is used to level the platform to
within 0.2 degrees of absolute level when auto-leveling. It is also use by the control system to
monitor platform level status for enhanced unit stability. The platform tilt sensor is located
inside the Lower Boom Mount.
• The axle sensor (Axle CAN Tilt angle transducer) which is mounted to the front oscillating axle
provides information as to the position of the axle relative to the chassis. This information is
used to allow or disallow drive when the platform is in the elevated position. If the front axle is
more then 3 degrees out of parallel with the chassis, drive will be turned off to prevent the loss
of stability.
• The third level sensor is located inside the GP400 and monitors the chassis angle. All three
sensors will calibrate at one time during the calibration procedure.