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Description – PDFThe GLA should ensure the positioning of the nozzle plugs in the casting launder and thus regulates the aluminum flow in the molds. A plug is attached to the arm to control the incoming flow of aluminum. It consists of the following electrical components:
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InterfaceAn external electronic control board (ASM or GMC) is used to control the stepper motor. It provides automatic management of the engine in case of emergency stop. The motor can be controlled by a stream of pulses or digital inputs (speed and direction). |
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In conjunction with the GLS (GAP level sensor) the GLA provide a perfect regulation of the metal level in the molds. |
Technical specifications
| GLA | |
|---|---|
| Range of movement | 0 - 48 mm (0 - 1.9 in) |
| Accuracy | +/- 0.5 mm (0.02 in) |
| Power supply | 24 VDC |
| Input / Output | 2 digital outputs (up/down limit switch) 3 digital inputs (up/down/low speed) 1 analog output potentiometer (position) Remark : command with pulses possible |
| Calibration | Factory calibrated |
| Testing | Autotest feature |
| Mounting | The GLA is fixed on an independant steel plate of the canal. The whole system is protected from heating with a thermal shield. |
| External electronic board for control | This card is supplying the power for the stepmotor and managint it automatially in case of emergency stop. |
| Weight | 16 kg |
| Interchangeability | Less than 5 minutes (2 connectors) |