Manual

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DXi User Manual
Appendix B: Flow Sensors
Appendix C:
Current Alarms Within a
Conventionlly Wired DXi
System
Note: This document pertains to Toro DXi submasters, DXi FLOWMAX groups
and mixed DXi and DX2 FLOWMAX groups activating conventional station types.
This document presents scenarios on how a DXi system measures and responds to
current related alarms. For details on how pure DX2 FLOMAX groups measure and
respond to current related alarms, please refer to the DX2 user manual.
Overview: A DXi controller has the capability to measure master valve (Mx), pump
(Px) and station (Sx) current and compare against minimum and maximum limits. A
user can globally enable/disable current limit checking for a controller via Laguna or
the controller setup menu.
If current limit checking is enabled and the current measured for an output is
below the minimum or above the maximum, an alarm is generated, and the output
is condemned from future irrigation until the user clears the associated alarm. If
multiple outputs are ON during the violation, irrigation is suspended (valves are
deactivated, and program runtimes continue to decrement), a diagnostic process
is started to determine the offending station(s) and alert(s) are generated for each
output in violation, condemning them from future irrigation until the user clears the
associated alarms. A diagnostic will only be ran once for a given group of stations and
start time. After the diagnostic process has completed automatic irrigation operations
are resumed, but manual operations are terminated.
Each over/under current alarm for a MV, Pump or station will contain the timestamp
of the violation, the measured current and the limit value compared against.
Appendix C: Current Monitoring