Manual

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DXi User Manual
Appendix D: Setting Up a FLOW MAX System
controllers.
Automatic establishment of flow limits and current limits for all the controllers
in the system.
Automatic system protection for the shared pump in partial power outages or
communication failures.
Automatic generation of diagnostic system warning messages at each
Flow Max unit.
Dynamic real time monitor shows system status at all times.
Overview
A Flow Max system is comprised of a number of identical DXi controllers (typically
3 to 5) with the first controller set up as the submaster and the remaining units set up
as satellites.
Controllers that share any Pump, Master Valve or Flow Sensor are defined as Flow
Max participants. As Flow Max participants, the DXi controllers must be part of a
serial hardwire configuration. Controllers that are not Flow Max participants may
reside on the hardwire link but must be defined as nonparticipants.
The serial hardwire configuration requires a communications cable (EV-CAB-COM).
Flow Max provides a means to detect station flow limits and main line breaks within
design and programming limitations.
All controllers participating within a Flow Max system must be programmed as Flow
Max participants from each of their respective control panels.
Submaster
The Submaster controller in the Flow Max group is the watchdog for the entire
group. It monitors all participant device operations such as pumps and master valves.
It also issues corrective action for flow violations, maintains the communication link
status with the Central, and accumulates all flow related data. The Submaster allows
the user to review all pertinent shared device information from its control panel. The
user can also monitor real time activity such as measured flow, upper and lower limit
changes as stations transition, as well as flow delay status.
The Submaster allows flow limits and current limits for each station of all participant
controllers to be established automatically from one location.
Flow Max system satellites can be set to use Cloud Connect to communicate
so that they can be operated using the Rain Master irrigation smartphone
app, ProMax Connect. If that is the case, note that the Central computer may
communicate with the satellites directly, bypassing the Submaster.
Devices
The devices in a Flow Max system are defined as follows:
Master Valves 1, 2, and 3
Pumps 1 and 2
Flow Meters 1, 2, and 3