MultiGrow Installation Guide
V2.0 MultiGrow Installation Guide Copyright© 2018 Autogrow Systems Ltd
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In some cases where 24v AC solenoid valves are to be controlled from the Output Module then it is
possible to connect a 24v AC transformer to the power connections.
!
If this is the case then the Bus
Network power supply to the green connector
A
(
+
&
-
) must be disconnected and isolated, it is
important that the Bus Network power supply remains continuous to the next module.
The diagram below shows a 24v AC transformer connected to the power connections and the Bus
Network power supply isolated from the Output Module but remaining continuous to the next
module. The wiring diagrams are also available in the Appendix.
Notes:
Power to the Output Module
should be connected to connector D and the power switch set to “plug
pack”.
The power must never be supplied power over the Bus Network wiring. The power supply used
should be appropriate for the peripherals connected to the outputs.
The outputs on connectors B & C are
“wet contacts”
–
They are NOT simple contact closures. Whatever
voltage is applied to connector D will be the voltage at the outputs connectors.
The output modules have override switches and so the enclosure is not waterproof. They must be
installed in a clean dry place and if this is not convenient must be installed in a water tight enclosure
(available separately).
The COMMON connection is common across ALL connectors including the Power Connectors
–
ve input.
This means that the COMMON & -ve are inextricably linked and appropriate measures must be taken
when wiring the outputs to mains switch panels.
