Meler MACRO FOAM Series, Инструкция по эксплуатации, Страница: 52 / 88

FOCKE MELER GLUING SOLUTIONS, S.A.
4-18
MELTER OPERATION
The maximum full scale for admissible pressure is 85 bar.
This full scale can be adjusted by reducing this value in percentage terms.
To make adjustments consult the ‘User configuration menu’, ‘1. MAXIMUM
PRESSURE ALARM’.
Mode of operation with internal pumping control and external pressure
control
In this operating mode, pumping is controlled from the equipment and
pressure is controlled by a 0-10 V external signal from the main machine.
Follow the steps below to use this operating mode:
1. Press the ON/OFF button to light up the control card.
2. Select ‘ok’ in the position ‘int’ and ‘ref’ in the position ‘ext’.The ‘ref ext’
LED will illuminate when voltage is received.
To activate the start-up status, all of the following conditions must be met:
• That the signal from the main machine reaches input E2 and its value
is not 0.
• That the input for pumping permission (E4) at central control is activated, as
pumping is not possible unless the equipment temperature is OK.
• That pumping is enabled with the pumping ON-OFF button (red LED is
turned off).
• That the failure input is not activated (E5), in which case starting the
pump would be impossible. In case of the pump be operating and this
input is activated, pumping will cease immediately.
The system will wait for the pressure signal from the main machine. When
the signal has been received, if a work pressure has been previously set it
will appear on the display and the pump will begin to work at the indicated
pressure.
If not, the pressure must be adjusted to the value required for the application.
There are three ways to do this:
1. Change the voltage applied from the main machine.
2. Change the full scale (see section ‘1. MAXIMUM PRESSURE ALARM’ in the
‘User configuration menu’).
3. Modify the pressure curve (see section ‘Configuring pressure curve’).