Magnum Venus Plastech Megaject RTM Pro Revison 7_0 - Manual (Page 18)

Megaject RTM Pro Manual – Revision 7.00 – 13
th
APRIL 2006
3.3. Connection Options
This machine features the following connections at the mixing head:
•
Fluid line (for delivering catalysed resin to autosprue(s))
•
6 – way pneumatic connector
•
12 – way electrical connector
For the most basic dispensing operations, such as filling a container with a pre-
defined quantity of resin for calibration purposes, the air and electrical connections
may be ignored. However, for more sophisticated procedures, these connections must
be made.
The electrical connector allows the machine to monitor the open/closed status of up to
four autosprues. This connector also allows a mould pressure transducer to be
connected to the machine, to enable closed-loop mould pressure injections to be
performed. It is recommended that a connection box, supplied by Plastech is used to
make the electrical connections between the mould and the machine.
The pneumatic multi-way connector allows six 4mm air lines to be connected to the
machine. The connections are numbered and are utilised as follows:
1. Autosprue open/close signal
2. Autosprue open/close signal
3. Flush sequencer valve 1
4. Flush sequencer valve 2
5. Flush sequencer valve 3
6. Flush sequencer valve 4
The autosprue signal has been doubled-up to increase flow and should be connected to
in common to all of the autosprues in the system.
In order to flush multiple autosprues individually, which are supplied by the same
line, a suitable normally closed pneumatically operated process valve should be fitted
in the flush line of the autosprue. The signal port on the process valve should then be
connected to the corresponding flush sequencer output on the machine. Thus, when all
connected autosprues are in the closed position, and a flush has be initiated, fluid can
only flow through the autosprues that have their corresponding flush sequencer valves
open. See the Appendix A for a drawing showing suggested flush sequencer
connections.
It is recommended that an electrical connection box, pneumatic connector and
autosprue system are permanently mounted on each mould. This machine has been
designed to allow an operator to safely connect the machine to a mould in three
simple steps:
1. Connect fluid line
2. Connect electrical cable
3. Connect pneumatics