The EC 531 is an all-in-one solution for control and monitoring of sewage pumping stations with one or two pumps. It offers straightforward control and monitoring via floats or advanced control via a continuous level signal. EC 531 is also equipped with smart VFD control including PID and Best Efficiency Point (BEP), which save energy, and equipment costs.
All functionality you need is integrated into the EC 531 equipment controller. The functionality to help monitor the equipment condition as well as to optimize and reduce risk of overflow, reduce energy costs and cleaning costs etc., is standard. EC 531 gives you instant access to alarms, pump status, level information and trends – both on site and remotely. Functions that help to prevent downtime and flooding are also included.
The equipment controller EC 531 can be used with one or two pumps.
The controller comes with a graphical display offering a full user interface. Level sensing in the pit can be performed using either float switches or a 4-20 mA level sensor.
Communication port RS 485 for sending and receiving information to peripheral products via Modbus interface which gives:
VFD control logic, including flow calculation, day set points, night set-points and adjustable pump reversal speed
BEP (best efficiency point)
Data communication:
Communication via Modbus (RTU / TCP) protocol with other telemetry or SCADA systems
I/O and register cross-reference tables for efficient communication setup
Ethernet communication support
EC 531 has built-in BEP (best efficiency point) control logic functionality. BEP is the point at which the pump operates at peak efficiency. At this point, flow enters and leaves the pump with a minimum amount of flow separation, turbulence and other losses.
Operating the pump closer to its BEP will result in less stress and wear, which increases the reliability and life span of the pump.
At start up, the EC 531 will run a number of capacity-contra-run-frequency calculations to determine the optimum frequency to operate the pumps. This test cycle repeats with a pre-set time interval.
Added value when controlling the pump based on BEP control logic:
Lower running costs
Less hydraulic loads on mechanical components
Less stress on bearing and shaft vibrations
Less audible noise
Less suction recirculation, (This also reduces the risk of the pump clogging.)
Climate change is challenging natural disaster prevention. When water runs off the land in large quantities, Sulzer’s comprehensive range of pumps provide reliable, cost effective and efficient solutions for flood control.
Inlet pumping stations are somewhat similar to large terminal pumping stations. Depending on the depth of the incoming sewer, the lifting heads can range from around 2 up to 30 meters. To prevent hydraulic shock loads, which negatively impact the biological process, the stations often make use of variable-speed drives and/or several pumps in parallel.
Network pumping stations collect municipal wastewater from residential homes and communal schemes. Installed in dry or wet wells, the pumps deliver the effluent to a terminal pumping station. Since most pumping stations are not equipped with screens, the pumps must cope with difficult materials such as fibrous sanitary and packaging items.
Outlet pumping stations are required when the level of the treatment plant is lower than that of the receiving water. This is especially true when discharging into a river, which can rise during heavy rain or flood periods, or into the sea, where the level varies with the tide.
Outlet pumping stations may also be needed to compensate for increasing frictional losses in the outgoing pipe at high flows, for example in long sea outfall pipes.
Pressurized sewage systems are well suited to outlying locations such as holiday areas and coastal regions, where there may be no direct access to local gravity-based systems. They can also provide an economical alternative to gravity sewers, since they involve smaller pipeline diameters and less excavation.
During heavy rainfall, storm water pumping stations deliver large volumes of water at low head to receiving surface waters or sewers. Having long been a part of flood management, they are increasingly involved in climate adaptation strategies for low-lying coastal cities.
Storm water retention tanks act as a buffer during periods of heavy rainfall. This is increasingly important as areas become more developed, with hard surfaces such as roofs, roads and parking lots that cannot absorb the rainwater. When storm water retention tanks are implemented, gravity or pumps can be utilized to provide a reduced continuous flow into the sewer system. Sulzer expertise makes it possible to avoid peak hydraulic loads and to limit the stresses on existing sewer systems.
Terminal pumping stations receive municipal wastewater from network pumping stations. Installed in dry or wet wells, the pumps forward the medium to a treatment plant for final purification. Due to the lack of screens at most pumping stations, difficult materials such as fibrous sanitary and packaging items are a constant threat to uptime.
The KS float switch, used in liquids for control or signal activation, operates in response to the liquid level. It is also suitable for use in sewage and for automatic level control. The KS float switch is impact- and shock-resistant, mercury-free, and environmentally friendly.
The MD 126 is a high-accuracy submersible hydrostatic level sensor. Encapsulated in stainless steel and resistant to sewage water, it is designed to measure levels in liquids such as storm water and wastewater in sump pumps.
MD 127 is a sewage water resistant, stainless steel encapsulated, submersible, hydrostatic level sensor of very high accuracy and over pressure capability. It is designed for level measurement in liquids like stormwater and wastewater in pump sumps. When connecting the 2-wire loop powered sensor in series with a DC power supply, the MD 127 gives a 4 to 20 mA output signal which is proportional to the level of the liquid.
The CA 524 is a 4G modem suitable for use with all type ABS controllers equipped with RS 232 modem communication. The modem kit comes complete with modem, dipole type T antenna, power cable and a DIN-rail socket. Diodes for indication of power and network status.
Sulzer offers one of the most comprehensive ranges of submersible pumps available on the market today. The applications extend from pumping of light and medium duty within residential and commercial properties to pumping of heavy duty with high concentration of rags and solids in municipal wastewater collection networks and in industrial wastewater applications.
Sulzer's energy efficient submersible mixers are suitable for a wide range of applications in industry and municipal treatment plants. They provide the right solution to match mixing tasks for agitating, blending, mixing, dissolving and suspension of solids in industry and municipal treatment plants.
The Sulzer pump control system offers a proactive solution for the network of pumping stations
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