Dimas PP 455E Mode D'emploi page 25

Operator's Manual PP 455E
NOTE!
The electric motor risks overheating due to a
too low voltage, if the voltage sensors are
switched off.
Turn on / turn off the voltage sensors:
• Press OK when the part menu is shown.
The display shows: VOLTAGE SENSOR and ON or OFF.
• Press OK to switch between ON and OFF.
• Press the down arrow to continue to the next part menu.
4.3 Pressure sensor for the hydraulic pressure
The pressure sensor measures the hydraulic pressure to
the blade.
NOTE!
The hydraulic unit's control system switches
off, if the pressure sensor is switched off. The
hydraulic system may then be difficult to
control with a high load.
Turn on/ turn off the pressure sensor:
• Press OK when the part menu is shown.
The display shows: PRESSURE SENSOR FOR
HYDRAULIC PRESSURE and ON or OFF.
• Press OK to switch between ON and OFF.
• Press the down arrow to continue to the next part menu.
4.4 Calibrate pressure sensor for hydraulics
The pressure sensor that measures the oil pressure for
blade rotation is possible to calibrate.
The pressure sensor must be calibrated according to the
order zero point and maximum point.
To calibrate the zero point:
1. Connect the incoming power cable to 63 A.
2. Connect an oil pressure reducing valve with a pressure
gauge to the blade rotation's hydraulic couplings.
3. Select the sub-menu "Sensor on/off calibrate" from the
"Settings" menu.
4. Scroll using the arrow keys and press OK when
"Calibrate pressure sensor for hydraulics" is shown.
5. Press OK again when the display shows CALIBRATE
ZERO POINT.
Work procedure for wall sawing
6. Start the hydraulic unit.
7. Adjust the oil pressure reduction valve to 0 bar.
8. Press arrow up/down until the value for the oil pressure
is shown as 0 bar, i.e. the same value as on the
pressure gauge on the oil pressure reduction valve.
9. Press OK to execute calibration.
To calibrate the maximum point:
NOTE!
Calibrate the zero point (see previous page)
before the maximum point. This is so you do
not miss to start the hydraulic unit.
1. Select the sub-menu "Sensor on/off calibrate" from the
"Settings" menu.
2. Scroll using the arrow keys and press OK when
"Calibrate pressure sensor for hydraulics" is shown.
3. Press OK again when the display shows CALIBRATE
MAX POINT.
4. Adjust the oil pressure reduction valve to 215 bar.
5. Press arrow up/down until the value for the oil pressure
is shown as 215 bar, i.e. the same value as on the
pressure gauge on the oil pressure reduction valve.
6. Press OK to execute calibration.
7. Press the down arrow to continue to the next part
menu.
4.5 Calibrate voltage sensor
To calibrate the voltage sensor:
1. Scroll using the arrow keys and press OK when
"Calibrate voltage sensor" is shown.
2. Select the voltage sensor (1-3) with the arrow keys and
press OK.
3. Connect a voltmeter between the phase and the earth
on the sensor to be calibrated.
4. Press arrow up/down until the defined voltage value on
the display is the same as the value on the voltmeter.
5. Press OK to execute calibration.
6. Press the down arrow to continue to the next part
menu.
4.6 Calibrate potentiometer
This function is used when calibrating the zero positions
on the knobs for blade motion and trolley motion.
To calibrate the zero positions:
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