VALCO MELTON EC4, Инструкция по эксплуатации

Страница: 69 / 123

MUS0330202 03/10/2014
VALCO MELTON S.L.U. Pol. Ind. Agustinos C/G 34 3116 0 ORCOYEN, NAVARRA
TEL: +34 948 321580 Fax: +34 948 326584 melton@melton.es www.valcomelton.com
64
4.3.21.1 Internal Level / External Level
There are two types of level control typically used with the Units, an
internal level sensor and an external level sensor. The internal level
sensor can be used inside the tank of the unit to trigger an auto-fill
device (see hopper feeder below), or an alarm state. The external
level sensor is used for pot fill mode (see Pot Fill Mode). The delay for
these sensors to activate can be set in this screen.
4.3.21.2 Hopper Feeder
– Internal Low Level Detection
The Hopper Feeder option is used to refill the hot melt control’s tank
with fresh adhesive when the tank level drops below the set level
sensor. This eliminates the need for the operator to manually open the
tank lid and add adhesive to the tank.
The internal low level sensor is mounted in the hot melt control tank so
that when the adhesive drops below the sensor, a feeder valve is
energized to feed glue into the tank to be melted. This feature has a
safety door switch that will disable the feeder if the tank door is
opened. The door switch, internal level sensor and feeder valve need
to be connected to the CPU board, to operate properly.
The internal low level sensor plugs into J15 on the CPU board. This
feature does not need to be set up in the software. If the Hopper
Feeder and it’s components are connected as described above, the
valve will energize when the door switch is closed and the sensor calls
for glue.
Door Switch
The tank lid door switch will be wired to J14 on the CPU. The switch
must be in the closed position for the feeder valve to energize and add
adhesive to the tank. When the tank lid is opened, the feeder valve will
turn off.
Feeder Valve Operation
The feeder valve is a ded24VDC @ 0.5A output that will
energize when the internal low level sensor calls for glue and the door
switch is closed. This is J17 on the CPU board; pin 1 is +24V, pin 2 is
ground.