Meler PS200, Инструкция по эксплуатации, Страница: 57 / 100

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MA-5066-ENG PS200 DRUM MELTER MANUAL MELTER OPERATION
Mode of operation with external pumping control and internal speed control
In this operating mode, pumping is controlled from the main machine while
speed is controlled from the equipment.
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 ‘ext’ and ‘ref’ in the position ‘int’. The ‘on ext’
LED will be illuminated when temperature is ok.
To activate the start-up status, all of the following conditions must be met:
• 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 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 pumping control signal from the main machine.
If a speed has been previously set, this value will be shown on the display
and the pump will start to rotate at the speed indicated provided that all prior
conditions are met. Otherwise:
3. Using the up/down arrows, select the rotation speed and/or wait for
pumping permission to be enabled (red LED is turned off).
At this moment, the pump will start to rotate at the speed indicated on the
display.
4. Adjust the rotation speed to the value required for the application. The
selected value is set pressing the right arrow key after blinking three
times.
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 RPM ALARM TIME appears.
• When the MINIMUM RPM ALARM TIME appears.
The maximum full scale for admissible revolutions is 100 (we recommend
working at speeds of not less than 10 rpm and not greater than 80 rpm).
The full scale can be adjusted by reducing this value in percentage terms. To
make adjustments consult the ‘User configuration menu’, ‘1. MAXIMUM RPM’.