Install and Setup Instructions for the valveLINK
valveLINK Hub Technical Specifications
|
Input Power: |
Max 2.5A@24Vdc |
|
Max Switching Current: |
1A per port/ 2.7A combined |
|
Max Switching Voltage: |
24VDC@50% PWN (simulated 24VAC) |
|
Device (Outputs): |
8 Sourcing FETS |
|
Output Status Indicators: |
LED |
|
PWM Mode: |
1kHz, 50% Duty |
|
Minimum Cycle Time: |
1 Second |
|
Interface: |
Growlink |
Features
- Eight Independent Channels: Manage up to eight irrigation valves individually, allowing tailored watering schedules for different crop zones. Supports up to 1 amp per output (2.7 amps max combined).
- Seamless Copilot Integration: Works directly with Growlink’s Copilot to automate crop steering for efficient plant growth and resource use.
- Flexible Control Modes: Offers manual, scheduled, and sensor-based operation to adapt to diverse cultivation strategies.
- Rugged Design: Built for durability in demanding agricultural environments, ensuring reliable and long-lasting performance.
What’s Included
x1 valveLINK
x1 AC/DC Power Supply
x1 Mounting Kit
x1 10 ft. RJ-45 Cable
x1 Mini Screwdriver
valveLINK Package Dimensions
Size: 7.5” / 191mm (L) x
7.5” / 191mm (W) x
3.75” / 92mm (H)
Installation & Wiring Instructions
It is recommended to install relays and other switching equipment outside of a grow room in the hallway whenever possible for improved access to the equipment without entering the growing space. Locating equipment in lower humidity areas will also extend the life of the equipment.
Mounting the Enclosure
When possible, mount equipment outside of the growing environment for better service access and reduced exposure to humidity. If a valveLINK is to be installed in a humid growing environment, mounting in a sealed enclosure is recommended.
Power Connections
Input Power: 24 VDC, 2.7A is required to operate the unit which will be supplied via the 24VDC power adapter included with the valveLINK. Maximum 2.5A power supply current.Input power protection required to prevent damage to the unit from overloading.
Outputs
There are eight (8) transistor outputs for driving solenoids with four common ground terminals. Two valves share a ground terminal.
Power Output Mode (AC)
Standard AC Mode (Pulse Width Modulation, PWM)
Standard irrigation valves operate on 24V “AC” power which is “flickering” on and off at50-60hz. The valveLINK controllers mimic this flickering on and off by providing the power to the valve in a pulsed fashion (pulse width modulation, or “PWM.”)
Note: The valveLINK driver will deliver a continuous DC voltage for 1 second when opening valves to provide sufficient inrush current to magnet coils in diaphragm valves.
Output Connections, Diaphragm Valves
Standard 24VAC irrigation valves can be connected directly to the valveLINK outputs. Up to eight valves can be connected and up to four valves can be operated simultaneously.
Note: Ensure the unit is in “AC” PWM output mode. LED on front panel should dim after valve is activated.
Mobile App Setup Guide
1) Plug in your Growlink device to power it on. The LED should be blinking blue. If not, hold the SETUP button until status light flashes blue rapidly (12-15 seconds).
2) Download the Growlink app from the Apple App Store, or Google Play Store.
3) Go to portal2.growlink.com/signup or tap the ‘Sign Up’ button at the login page of the Growlink Mobile App to create a Growlink Account: 
After creating your account, a verification email will be sent from ‘no-reply@growlink.com’ to the email address set for your newly created account. One must verify your email address in order to utilize your newly created account.
4) Open the Growlink Mobile App and login to your newly created and verified account:
5) Tap the icon of three lines in the top-left of the Mobile App, then tap the Hardware button in the following menu:
6) One can add a controller to an existing room, or tap the ‘+Add’ button in the following page to add a new room to your account. This is the container that will hold the future controller registration:
7) If you are creating a new Room, provide a name for the Room, the Square Footage of the Room, and the Room Type, followed by tapping the 'Create’ Button to finish creating that room:
8) Once an existing room has been selected or a new room has been created, tap the ‘Continue’ button to begin registering the controller to your account:
9) Tap the LINKS button in the following page:
10) Select the ‘Add Devices’ option to add the controller to the specified room.
11) Select the ‘valveLINK’ option in the following menu that populates:
12) If you’re registering your ValveLINK as a standalone device, tap the ‘Add as a standalone Wi-Fi Device’ option. LINKS connected via WiFi can only connect to secured 2.4GHz networks and cannot connect to WiFi networks that are not secured with a password and/or 5GHz WiFi networks.
If you’re registering your ValveLINK to a LINKS Hub, tap the ‘Add to a HUB’ option:
Further instructions on how to add equipment to an existing LINKS Hub can be found HERE.
If registering the valveLINK as a standalone controller, the app will then search for a nearby device in listening mode. Ensure your valveLINK is in listening mode by holding down the setup button for at least 3 seconds.
13) Once the valveLINK is paired to your phone, designate the network you wish to connect the valveLINK to and input the credentials for that network:
Once WiFi credentials have been provided, all that is left is to name the controller and tap the ‘Next’ button on the following screen. The Mobile app will then attempt to register the controller to your account and pass those credentials towards the controller.
14) Once the valveLINK has been detected, the app will populate outputs of the valveLINK, where you can then name the outputs, set the device types for those outputs, and register that configuration to your valveLINK:
Once the outputs have been named to your liking and any required fields for the module have been designated, one can tap the ‘Register Device’ button to push that configuration to your newly configured valveLINK.
Once successfully connected and configured, the following success message will display. Tap the ‘Add Equipment to this Controller’ to add more hardware to this controller, Tap the ‘Edit Controller Profile’ button to update the Controller Profile Settings, or tap the ‘Go to Room Dashboard’ button to view the dashboard for the newly connected controller:
Troubleshooting
Relays are not activating, no power LED on PCB
Ensure the relay input terminals have 120VAC and are correctly wired. A dimly lit red LED should illuminate when the circuit board has power. If there is 120VAC at the input terminals, check that the fuse is not damaged (see fuse replacement.)
Relays are clicking but no power to an outlet
Check the status LED to determine if AC power is reaching the line terminal of thereceptacle. The red LED is powered by AC voltage from the line voltage terminal of the receptacle and will only illuminate if voltage is passed through the relay to the terminal. If the status LED for the receptacle is on, check the equipment by bypassing the relay.