Magnum Venus Plastech Megaject RTM Pro Revison 7_0 User Manual
Page 60
Megaject RTM Pro Manual – Revision 7.00 – 13
th
APRIL 2006
Section 7 – Fault Finding
The Megaject RTM Pro machine has been found to be highly reliable, however when
faults occur it can normally be traced to inappropriate operation or poor maintenance.
7.1. Programmable Logic Controller (PLC) System
The PLC machine controller can only operate correctly with the correct input signals,
therefore unexpected faults have often been found to be due to poor connections.
Each digital PLC module has indicator lights, which can be used to determine the
status of the various inputs and outputs. The I/O tables, listed in Appendix C, can be
used to find the source of faults that may prevent the machine from operating
correctly.
Figure 7.0 shows the PLC system located in Bay 1, while Figure 7.1 illustrates the
order, model numbers an type of modules in the system.
Figure 7.0 – PLC system in bay
The digital inputs can also be monitored using the IO check screen (see section 6.11)
and some of the digital outputs can also be tested.
In order to read the input values of the analogue input signals, the IO check screen can
also be used.