0430 Automatic control engineering in stormwater tanks MSR
Intended Purpose
Controllers are used for manual and automatic operation of one or more units depending on different operating states of a system. Input variables for the controls are e.g. water levels in tanks, flow rates etc. The controller uses these input variables to generate output signals that switch motors, valves, pumps, etc. on and off.
From the continuous comparison of actual and designated value, e.g. the flow rate of an electromagnetic flow meter EMF, controllers generate output signals which are intended to keep the control error as small as possible.
PROPERTIES OF THE AUTOMATIC CONTROL UNITS
Based on our experience in equipping more than 10,000 rainwater tanks, we have developed concepts for the appropriate and necessary control and regulation technology. Such equipment consists essentially of the following units, which can be used depending on the type of tank, the equipment and the functions required:
- control and display unit for a valve with actuator, a pump or booster pump, a jet cleaner, an agitator or a tipping flusher
- power unit with switches and fuse protection for the above equipment
- reactive current compensation, soft-start device (depending on power supply company regulations)
- temperature monitoring of the motors
- daily time switch for daily routine of different equipment
- electronic PID three-point stepping controller with limit adjustment on site and via a remote control system
- programmable logic controller (PLC)
- software, PLC program library