Meler MACRO FOAM Series, Инструкция по эксплуатации, Страница: 55 / 88

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MELTER OPERATION MA-5127-ENG MACRO FOAM SERIES MELTER MANUAL
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).
• If the external ‘ok’ mode (start-stop) is selected, the external ‘ok’ input
(E3) must be activated.
• That the field MAXIMUM PRESSURE ALARM is not set to zero (this field
is available on the control card ‘User configuration menu’).
• 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 main machine to send the pumping activation and
work pressure signals. When this signal has been received, if a work pressure
has been previously set, this value will appear on the display and the pump
will start 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’
‘User configuration menu’).
3. Modify the pressure curve (see section ‘Configuring pressure curve’).
Keeping the ‘Vin’ key pressed will show the voltage sent by the main machine.
The pump will stop whenever:
• The control card is disabled with its ON/OFF button.
• The pumping ON-OFF button is pressed (red LED is illuminated).
• When the pumping permission input is deactivated (E3).
• When a variator error signal is activated (E5).
• When the MAXIMUM PRESSURE ALARM TIME appears.
• When the MINIMUM PRESSURE ALARM TIME appears.
• When the voltage signal from the main machine is zero.
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’..