Topcon A2677 manual Section Valve Mode

X20 Sprayer Reference Manual

•Select ECU 30S if the description on the overlay reads ‘Spray ECU 30S’.

The corresponding part number is A2643.

Please note: The ECU models: ECU and ECU 3 will come factory loaded with the firmware version BMS207 or higher.

The ECU models ECU 10S, 10SR and 30S will come factory loaded with firmware version BMS 209 or higher.

Section Valve Mode

•Select 3 wire/Solenoid if the Sprayer is fitted with 3 Wire Motorized Section Valves or Solenoid Section Valves.

Please note: When 3-Wire/Solenoidis selected the Sprayer can control 31 Section Valves and one 3-Wire Dump Valve. This is because both 3-Wire Motor Valves and Solenoids only require a single signal wire to switch the valves ON and OFF. Therefore, 31 sections can be selected. The current harness only support 30 sections.

•Select 2 wire if the Sprayer is fitted with 2-Wire Motorized Section Valves (Reverse Polarity Valves).

Please note: When 2 wire is selected (2 wire Motorized Valves of Reverse Polarity Valves) this enables the Sprayer to control 15 section valves and one 2 wire Dump Valve, because 2 wire valves require 2 signal wires to switch the section valves ON or OFF. Therefore, only 15 sections can be selected.

A2677 Rev 1.5 8-11