Process reliability and process optimization with new V2+ servo pump software
The controller-integrated servo pump software is now available in a new, expanded version. The new software package for V2+ servo pumps offers new features especially in the areas of process monitoring, process optimization and process reliability.
With the feature for speed monitoring and slip speed compensation, service can now be planned: The leakage characteristic of the system is monitored, initiated by the machine controller. The speed is automatically readjusted as needed so that the machine continues running in the optimal range. If the leakage increases as the pump ages and a measurement value outside the tolerance is detected, the system returns an error message. The operator is thus informed automatically, enabling a pump change at the right time, which prevents downtimes and improves process quality.
Pressure sensor monitoring is another new feature that ensures process quality and prevents downtimes. As pressure sensors age, they become less accurate, so the sensor values are first optimized and then a sensor change will be indicated as inaccuracy increases. Pressure sensors also typically have a tendency towards zero drift, i.e. they indicate that there is pressure in the system when this is not the case. Pulsating alternating pressures arising in the servo pump system can cause damage to the pump. In this case, the converter would receive the incorrect information that pressure still needs to be reduced and would rotate the motor in the wrong direction. With the pressure sensor monitoring software feature, such a false response is avoided, thus preventing damage to the pump.
Many processes that use servo pumps require long pressure hold times, e.g. with injection molding machines when the shape has to be maintained. This increases the risk of a thermal overload and thus early pump wear and tear. With the temperature model in the V2+ servo pump software, the thermal pump load is calculated from speed and pressure. Upon reaching a critical threshold value, a bypass valve can be connected, for example, to prevent overheating.
The V2+ software version also includes the acceleration limitation function. This ensures a soft yet highly dynamic control mode and thus minimizes wear and tear on the machine.
The intelligent control algorithm for adjusting to different rates of increasing pressure was already integrated with the previous software version. With this feature, parameterization only has to be set once and the adjustment occurs automatically. The software enables an overshoot-free pressure jump in minimum time, thus ensuring an optimized process sequence.
These servo pump features are integrated directly into the controller as an order option and are available on the servo controllers of the b maXX 3300 family and on the mono units and the side-by-side system of the b maXX 5000 family.
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