Autogrow EC Mini Controller User Manual
Ver 5.0 EC Mini Controller Installation Guide (September 2020) Copyright© 2020 Autogrow Systems Ltd 1
EC Mini Controller
Installation and User Guide
Simple. Robust. Reliable.
• Measures EC, CF or TDS
• Doses nutrients on-demand
• Displays EC (CF/TDS), Dose Count Total (DCT) and Dose
Count per hour (DC/h)
• Direct drive dosing pumps (keeps costs down)
Ver 5.0 EC Mini Controller Installation Guide (September 2020) Copyright© 2020 Autogrow Systems Ltd 2
Contents
Introduction
3
Menu Structure and Settings
4
Installation
6
Maintenance
8
Fault Finding
9
Warranty and Replacements
11
Important notice:
When using automatic dosing equipment, all chemicals must be in a
form diluted state, especially acids and alkalis.
We recommend diluting your nutrients 1-part nutrient to 4 parts water
while dialling in your dosing settings.
Ver 5.0 EC Mini Controller Installation Guide (September 2020) Copyright ©2020 Autogrow Systems Limited 3
Introduction
The EC Mini Controller is from a family of monitors and dosers that have been
proven over many years. This controller has built upon this pedigree of simplicity
and innovative features.
Features
The EC Mini Controller may be used as a simple monitor or may have two
peristaltic pumps added to turn it into a complete dosing control system.
Failsafe Dosing
Dosing may be inhibited if any of the following is detected:
• EC outside limits detected
• Dose count per hour exceeded (DC/h)
These are useful if a leak should develop or the pump fail and should prevent
continuous dosing.
Alarms
The alarms can be enabled to operate on the controller when the EC or DC/h
deviates outside the user setpoint.
Outputs
The 24VDC outputs allows direct drive of 24VDC peristaltic pumps. Always ensure
that the current capability of the power adapter is greater than the current draw
of the pumps. The pumps that we supply take a peak current of 1.2A. The
controller is normally supplied with a 2.5A power supply.
Ver 5.0 EC Mini Controller Installation Guide (September 2020) Copyright ©2020 Autogrow Systems Limited 4
Menu Structure and Settings
The menu structure of the EC Mini Controller is split into 2 sections - Readings
and Settings. Toggling between the two menus is achieved by pressing the Menu
button. Once in the Readings or Settings Menu, navigation is achieved through
the Up and Down arrow keys. Settings may be changed by holding down the Edit
button and then pressing the Up or Down arrow keys. The new setting is
automatically saved when the edit button is released. Some Readings can be
zeroed; to do this hold down the Edit button and then press the Down arrow.
Readings
Display EC
Display Dose Count Total (DCT)
Display Dose Count per Hour (DC/h)
Display System Status
Settings
S1
Set Point
The desired EC Level
S2
Dose Time (secs)
The time in seconds that the solenoid valve will
open to add nutrient
S3
Dose Interval
The time in minutes between doses to
allow for mixing to occur
S4
Force Dose
This forces a dose to occur straight away
S5
Alarm Deviation
If the measured EC deviates from the setpoint by
more than this value, the alarm will
sound (if enabled)
S6
Alarm Dose Count
If the Dose Count per hour reaches this
value then the alarm is sounded and the
dosing is inhibited (if enabled).
S7
Alarm ON/OFF
This enables/disables the alarm functions
S8
Calibration
Calibrate using EC 2.77 (CF 27) buffer
S9
Temperature Unit
Select between °C or °F
S10
Conductivity Unit
Select between EC, CF, and TDS (500, 640, 700)
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