Does anyone do automatic control in the pharmaceutical industry? For example, does it control the dispensing (solvent) from the tank area to the workshop reactor? Not only consider one-on-one...
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Does anyone do automatic control in the pharmaceutical industry? For example, does it control the dispensing (solvent) from the tank area to the workshop reactor? Consider not only one-to-one, but also one-to-many. The workshop presses start, turns on the tank area pump, drives the workshop valve and measures and accumulates. After closing the valve, turn off the pump
It has been done before, and it is necessary to realize remote start, one pump with multiple users, automatic valve closing when the cumulative amount is reached, interlocking at low liquid level at the inlet, and interlocking at the high liquid level at the terminal to stop the pump. Siemens plc used
It has been done before, and it is necessary to realize remote start, one pump with multiple users, automatic valve closing when the cumulative amount is reached, interlocking at low liquid level at the inlet, and interlocking at the high liquid level at the terminal to stop the pump. Siemens plc used
Do you need constant flow into the reactor? 1. If constant flow is required, that is, each reactor needs to be equipped with a flow meter, a regulating valve, and a shut-off valve to control the flow, stabilize the flow, accumulate the flow to the set value, and automatically close the shut-off valve. ； 2. If constant flow is not required, that is, each reactor needs to be equipped with a flow meter and a shut-off valve. When the flow is accumulated to the set value, the shut-off valve will be automatically closed. ； 3. As for the control system, it can be realized with PLC, DCS, etc., or it can also be realized with an accumulative controller.
Of course, if process interlocking is involved, it also needs to be set up separately, such as automatically stopping the dosing pump and closing the shut-off valve when the tank liquid level is low.； The tank feed pump automatically stops when the tank liquid level is high. This mainly depends on the process requirements.
One-to-many is fine, don’t use it at the same time
At present, this kind of control uses Siemens PLC + Siemens weighing control, which is easy to do.
What I mean is that this feeding system consists of a pump, pneumatic valve, flow meter and controller.
This control scheme is relatively simple. Is it a high-risk process and requires safety interlocking? SIS control?
Meeting process requirements also requires meeting safety requirements