DCS parameters of the pump
Thread Content
For pumps, what are the signals sent to the DCS? Besides the current indication of the pump, as well as its start and stop, what other signals go to the DCS?
Based on your requirements, the most basic things are the start/stop functions and status signals during operation; some systems also require the display of current levels, as well as the ability to switch between remote and local control (manual vs. automatic mode)
The status indication of the pump generally includes these aspects. Usually, remote operation via DCS is not allowed for starting the pump; instead, the operator must conduct an on-site inspection and confirmation before starting it. A stop function is available.
For variable-frequency pumps, there are also signals to control the frequency converter, current signals from the frequency converter, as well as signals for starting and stopping the frequency converter and feedback signals.
Is it also necessary to have fault signals in some situations?
1. How to understand the operation status signal? What type of signal is it? 2. What does it mean to see a pump startup status signal on the diagram today?
The signals for pumps on the DCS can be as many as dozens, depending on the requirements; in one of our projects in Tunisia, a single motor had over 20 such signals. Generally, high-pressure pumps can only be stopped via the DCS – they cannot be started there – while low-pressure motors can be started and stopped using the DCS
1. How to understand the operation status signal? What type of signal is it? 2. What does it mean to see a pump startup status signal on the diagram today?
Reply to 6# 383919796: The operating status refers to whether the pump is running or stopped.
Reply to 8# 383919796: The operating status is a DI point; allowing the pump to start and stop involves sending an output signal to the pump, which is a DO point.
It also depends on the type of pump. Some pumps have requirements regarding bearing temperature, winding temperature, frequency conversion speed control signals, vibration, phase alignment, displacement, remote start, remote stop, local and remote control, current, and operation status signals; it’s necessary to analyze each case individually