More Inputs and Outputs
Start Input
The Start Input is across "I2" and "C2". Joining these terminals will start program 1. The terminals have to be
connected for only a short period, 1 second, to activate the program. The contact must be broken before the
program will start again.
Suspend Input
The Suspend Input is across "I1" and "C2". Joining these inputs halts the irrigation programs. The programs
will continue once the short is removed.
This input may be connected to a float switch in the water reservoir so that the irrigation sequence is halted if
the water level is low.
The Suspend Input can be configured to be a stop rather than suspend input.
Flow Meter Input
A pulse type flow meter or paddle wheel flow meter can be connected to the flow meter input. A pulse type
flow meter connects across the F and G terminals.
Paddle Wheel flow meters are connected to F and G and are powered from the +V terminal. The +V terminal
provides +18VDC.
Climatic Sensor Input
The Climatic Sensor Input allows Heron sensors and the Heron weather station to be connected to the
HT240pro controller. Please see specific sensor manual for wiring instructions.
The Climatic Sensor Input also allows a simple rain switch (mini-click) to be connected to the HT240pro
controller. The simple rain switch is connected across the D and G terminals.
24VAC Permanent Output
A 24VAC permanent output is available across the terminals marked 24VAC. This output is to supply low
power 24VAC devices such as Heron interface cards and the Heron GSM module. This output is fused with
a F2 a 0.3A fuse.
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