Magnum Venus Plastech INNOVATOR PRO 5000 (8003) - Manual (Page 24)

MAGNUM VENUS PLASTECH Innovator Pro Manual 24
Count reset button
Press and hold when
adjusting the Preset counter Use these black buttons for
adjusting the Preset counter
Press the inject button to start the machine in inject. The machine can not be
started in inject mode if it is operating in recirculation or flush modes. The injection
gun will open, the TAS signal will pressurize and the pump will run. To stop the
machine and leave inject mode, press the stop button. If the predetermining
counter reaches the user set shot count, the machine will stop automatically.
Figure 4 – Predetermining Counter
If a PPVS sensor is being used the pump will stop and the inject gun will close
when the mould pressure reaches set-point. When the mould pressure drops to
an acceptable level, the inject gun will open and the pump will run once again
after a user configurable delay. This delay has been included to prevent rapid
cycling of the inject gun and pump (“hunting”) under closed-loop control.
Mould Pressure Guard (MPG) – The machine features a Mould Pressure Guard
(MPG), which is used to control the maximum allowable pressure at the mixing
head. This can be utilized to provide line pressure control during an injection, or
as a safety mechanism to prevent the line pressure from exceeding the
maximum working pressure of the injection line to the mould.
The MPG block is shown in figure 5. The blue air-line supplies air from the MPG
pressure regulator on the control panel. When fluid pressure at the injection head
exceeds the MPG preset level, shown on the MPG pressure gauge, the internal
diaphragm moves and leaks air from the red air line connected to the control
circuit. This causes the machine to slow and stop.
NOTE: The MPG control is active only in injection mode and it is correct to
hear air leaking from the MPG block when the MPG is operational.
Stroke count
Preset count