This can be (1) in addition to a basic PLC/ SCADA interface, or (2) to provide a stand-alone station-wide interface and display for installed MicroPM units, if PLC/ SCADA is not available.
The MicroStM plus a browser becomes a local HMI (Human Machine Interface).
The MicroStM Station Manager/ Monitor is connected just like the MicroPM pump monitor, via a wired or wireless Ethernet network using Modbus TCP protocol.
PLC/ SCADA, if available, requests the information stored for each MicroPM pump monitor in registers in the MicroStM. Password protected embedded web pages with data and status for each MicroPM can also be accessed. Wireless options would also allow the embedded web pages to be viewed from a network-enabled mobile browser with appropriate security access (e.g. tablet computer, phone).
The MicroStM has an embedded processor unit with dedicated firmware that collects all attached MicroPM pump monitor data (via ModbusTCP) into one location and makes that available via a single ModbusTCP slave interface. This greatly simplifies the task of developing the interface with PLC/ SCADA.
The same interface is used for logging and reporting functions, and calculated station level operational parameters.
MicroStM provides pump scheduling functionality to provide information on which station pumps could be run to provide a required station demand at the lowest cost. The scheduler functionality is configurable for a given station/operational needs.
Direct web interfacing with each MicroPM unit is still supported. See separate technical information for the MicroPM for data provided on embedded web pages.
In-built comparison with manufacturer’s or reference data provides the information required for decisions on pump maintenance, refurbishment, or replacement.
The layout below is shown with 3 pumps but there is no practical limit to the number of pumps in a given installation. Optional pressure sensors to give the pressure drop across the discharge valves are also shown.