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A2677 Rev 1.5
X20 Sprayer Reference Manual
The Spray Electronic Control Unit (ECU) is a new generation Spray
Controller, which is used in conjunction with the Topcon Precision
Agriculture X20 (or X15) console. The X20 console is the graphical
interface of the Spray ECU controller. The Spray ECU replaces the
Spray Rate Interface.
The Spray ECU can control up to 30 section valves (3 wire), and
allows Automatic Section Control (ASC) of the 30 section valves (the
X15 console can control up 15 sections under ASC). The Spray ECU
can control up to 2 liquid tanks directly. If the Spray ECU is used in
conjunction with a Multi-Drive Electronic Control (MDECU) unit, it
can control up to 3 liquid injection tanks.
The Spray ECU can handle Boom Sensing inputs, therefore it can be
connected to existing Remote switches. The Spray ECU also has a
new feature called Section Mapping, which allows one section switch
to control a number of section valves. Therefore the existing Topcon
Precision Agriculture Switchbox or remote switches (usually 6 or 8
switches) can control all 30 section valves, when they are controlled
manually. The X20 Sprayer software sets up the section mapping to
allow the six switches to control the 30 section valves. The ASC still
controls all 30 section valves individually.
The Spray ECU can control Regulator or Proportional type Control
Valves. The Spray ECU can control 3 Wire, 2 Wire (reverse polarity)
or Solenoid type Section Valves.
Introduction