Link4 iGrow 1800 Installation And User Manual

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INsTALLATION ANd UsER’s GUIdE

Nov 2015 v3.0a Edition

iGrow 1800

INTELLIGENT ENVIRONMENTAL CONTROLLER

Table of Contents

Introduction .............................................................................................. 1

Customer Service .......................................................................................................... 1

Contact Us ..................................................................................................................... 1

Warranty ...................................................................................................................... 2

Returns ........................................................................................................................ 2

Repairs ......................................................................................................................... 2

Additional Costs ......................................................................................................... 2

Governing Law ............................................................................................................ 2

Support ........................................................................................................................ 2

Before you Begin ....................................................................................... 3

Temperature Control .................................................................................................... 3

Deadbands ..................................................................................................................... 3

Setpoint .......................................................................................................................... 3

Ramping ......................................................................................................................... 4

Control Strategy ....................................................................................... 5

Setpoint and Staging Worksheets ............................................................................ 6

CO2 Worksheet ........................................................................................................... 6

For more information on CO2 control, see the CO2 Equipment portion of this

manual.Accumulated Light Worksheet for Irrigation ............................................. 7

Accumulated Light Worksheet for Irrigation ........................................................... 7

Cycle & Trigger Worksheet for Irrigation ................................................................ 8

Schedule Worksheet for Irrigation ........................................................................... 8

Installation .................................................................................................................. 9

Content Inspection ..................................................................................................... 9

Recommended Tools ................................................................................................. 9



iGrow 1800 Opening the iGrow 1800

Overview ............................................................................................ 12



....................................................................................... 13

Internal Layout .......................................................................................................... 14

Wiring the iGrow 1800



.......................................................................................... 14

Power Supply Installation ........................................................................................ 15

Output Installation ................................................................................................... 17

iGrow 1800 Installation Guide PageII Link4 (714) 524-0004

Control Relays & Contactors...................................................................................... 17

“Wet” and “Dry” Contact Design ................................................................................ 17

Hardware Interlock Jumpers ...................................................................................... 21

Indoor Air Temperature and Humidity Sensor ..................................................... 24

Light Sensor .............................................................................................................. 26

Wind Direction and Wind Speed (Anemometer) ................................................... 29

Rain Sensor (Tipping Bucket) .................................................................................. 31

Precipitation Sensor (Fast Response) ..................................................................... 33

Outdoor Air Temperature sensor ........................................................................... 35

Sensor ................................................................................................................ 37

Bottom Heat Probes ................................................................................................. 39

Wiring Sensaphone .................................................................................................. 41

Expansion Units & Multi-Zone Network ................................................................ 43

Programming your iGrow1800 ............................................................. 46

Before You Begin Programming ................................................................................ 46

Navigation .................................................................................................................... 46

Status Screens and Programming Screens ............................................................... 47

Status Screens ............................................................................................................. 47

Welcome Screen ....................................................................................................... 47

Main Status Screen ................................................................................................... 48

Sensor Status Display ................................................................................................ 50

Equipment Status ..................................................................................................... 51

Yesterday’s Averages Status ................................................................................... 51

Programming Screens ................................................................................................ 52

Begin Programming .................................................................................................... 52

System Setup (installation settings) ......................................................................... 52

Cool/Heating Stages .................................................. Error! Bookmark not defined.

Setup Deadbands ..................................................................................................... 53

Setup Location .......................................................................................................... 53

Outputs Control ....................................................................................................... 54

Setup Inputs (sensor mapping) .............................................................................. 57

Calibrate Inputs ........................................................................................................ 59

Time/Date & History ................................................................................................ 59

System Units ............................................................................................................. 60

Communications (Network Programming) ............................................................ 60

iGrow 1800 Installation Guide PageIII Link4 (714) 524-0004

Fallback Settings ...................................................................................................... 61

Advanced Settings .................................................................................................... 62

Clear History ................................................................................................................ 65

SmartCool Factors .................................................................................................... 65

Setpoint/Time Period Programming ......................................................................... 66

Programming Equipment ........................................................................................... 69

ON/OFF Equipment .................................................................................................. 71

Irrigation Programming ........................................................................................... 72

CO2 Equipment ........................................................................................................ 78

Light (HID) Equipment ............................................................................................. 79

Pump Control ............................................................................................................ 83

Vent (Proportional) Programming .......................................................................... 85

Curtain Programming .............................................................................................. 87

Mixing Valves............................................................................................................ 89

PZone (Micro-Zone) for Proportional Equipment ................................................. 92

VOut Variable Voltage/Current Output ................................................................. 95

Dehumidify/Humidify ................................................................................................. 97

Stage Overrides ........................................................................................................... 98

Equipment Overrides .................................................................................................. 99

Smart Cool Settings .................................................................................................. 100

Setpoint Alarms ......................................................................................................... 102

Auxiliary Controls ..................................................................................................... 102

Expansion Settings ................................................................................................... 103

Heat Demand ............................................................................................................. 104

Cool Demand ............................................................................................................. 105

Appendix – Advanced Auxiliary Controls…………………..………….106

iGrow 1800 Installation Guide PageIV Link4 (714) 524-0004

Introduction

Welcome to iGrow 1800TM, Link4’s Intelligent Greenhou se Environmental Controller. T he iGrow 1600/1800TM represents the latest in greenhouse environmental contr ol automation. iGrow 1800 and integrate a variety of equipment in your greenhouse. Your heating, cooling, venting, shading, humidity, CO lighting, misting and irrigation needs are linked together into one flexible, easy-to-use system. Link4 can offer reliable service because we are staffed by the designer and engineers that developed the iGrow

. In designing the iGrow 1800

1800 and cost concerns for s mall to m id size gro wers and no other contr oller has a better feature to pr ice ratio t han iGrow 1800 iGrow 1800 greenhouse management giving you the freedom for you to focus on plants and profits. The reason why we stand out from others is because of our Link4 Promise: Our passion is to provide grower s wi th intelligent control solutions. We understand controlling your growing environment is critical to your success. Therefore, our commitment is to build outstanding controllers and to provide excellent support so that you can know with confidence that the iGrow 1800

. Your greenhouse contr ol system should improve the qualit y and efficiency of your operation.

offers quick installation, and dynamic programming flexibility for easier and more accurate

it was our purpose to design a contr oller specifically for the dem ands

system is right for you.

enables you to control

Customer Service

Link4 has a well-trained custom er suppor t s taff that is r ead y to help . Our c ust om er s ervice center is c om mitted to your greenhouse business 24/7 through our website or service line f or acc ess to solutions for your controll er needs. Before you contact us, please write down the model number and serial number located inside the iGrow

enclosure so that we can serve you better.

1800

Address: Website:

Link4 Corporation http://www.link4corp.com 22725 La Palma Avenue Yorba Linda, CA 92887

Telephone: Email:

SUPPORT 866.755.5465 Sales: sales@link4corp.com FAX 714.854.7244 Service:

support@link4corp.com

iGrow 1800 Installation Guide Page1 Link4 (714) 524-0004

Terms and Conditions

Warranty

Link4 warrants that the goods s old under this cont rac t will be free from defects in material and workm anship f or a period of 12 months af ter the date of pur c hase. This warranty will be lim ited to the repair a nd replacement of parts and the necessary labor and ser vices required to repair the goods. IT IS EXPRESSLY AGREED THAT THIS WARRANTY WILL BE IN LIEU OF ALL WARRANTIES OF FITNESS AND IN LIEU OF THE WARRANTY OF MERCHANTABILITY. Moreover, any description of the goods contained in this c ontract is for the sole purpose of identifying them, is not part of the basis of the bargain, and does not constitute a warranty that the goods will conform to that description. The use of an y s am ple or model in connection with this contrac t is f or illustr ative purposes only, is not part of the basis of the bar gain, and is not to b e cons trued as a warranty that the goods will c onform to the sample or model. No affirmation of fact or promise made by Link4, whether or not in this contract, will constitute a warranty that the goods will conform to the affirmation or promise. Link4 shall not be responsible f or replacement(s) or repair(s), which becom e defective from user negligence, modification, abuse and/or a ny types of improper usage. Nonconform ance to any of the specifications i n the product manual will void the warranty. Furthermore, our liability to the goods sold, whether on warranty, contract, or negligence, will be releas ed upon the expiration of the warranty period when al l such liability shall terminate. Link4 shall not be responsibl e for any loss or c laims due to consequent ial dam ages afford b y the Buyer. Link4 also reserves the right to make any necessary changes to features and specifications to condition or warranty.

Returns

Merchandise cannot be returned without a Return Merchandise Authorization (RMA) number from Link4. Requests for permission to return defective items must be made within (14) fourteen days after receipt of shipment. A Link4 RMA # for appro ved returns must appear on bo th the customer's s hipping carton and the related receipt memo. Parts under warranty will be repaired at no charge. Other returned items will be subjected to the following res tock ing charges: 2 0% f or no value added item s, 40% f or value a dded it ems , and 75% for custom designed or built to specification items.

Repairs

A repair order must als o have a Link 4 Return Merchan dise Author ization (RMA) n umber. Repairs that are not covered by the warrant y will be billed on a m aterial and labor bas is. Item s returned for repair must be s ent to Link4 with prepaid return transportation Link 4 will not be responsible f or damage(s ) due to improper pack aging or shipping and delivery of items returned for repair.

Additional Costs

It is expressly agreed that Buyer will re imburse Link4 for any additional costs attributable to changes in the specifications, directions, or des ign of the items furnished which are reques ted or approved by Buyer at Link 4’s listed retail prices in effect at the time such changes are ordered.

Governing Law

The validity of this contract and of an y of its terms or provisions, as well as the rights and duties of the parties under this contract, shall be construed pursuant to and in acc ordance with the law of California. The parties specifically agree to submit to the jurisdiction of the courts of California.

Support

In order to offer you the best support, we request that you register your product with us online at www.link4corp.com. You will find the Register selection under the Support tab of the website.

iGrow 1800 Installation Guide Page2 Link4 (714) 524-0004

Before you Begin

Temperature Control

With the iGrow 1800TM you can program a c ooling temperature target called a “Coo l Setpoint” and a heating temperature target called a “Heat Setpoint”. The temperatur e range between these two targets is called the “Normal” temperature range. If the greenhouse temperature is within the Normal tem perature band usually none of the cooling or heating equipment is on. However, some c irculation fans (often called horizontal air flow (HAF) fans) may be active to maintain air movement within the greenhouse environment.

Whenever the temper ature within the greenhouse move s above the cool setpoint, or below the heat setpoint (falls outside the Normal t emperature range) the iGr ow 1800 back in line. With the iGrow 1800 from Cool 1 to Cool 6 and Heat 1 to Heat 6. Cool 1 and Heat 1 are the least aggressive with Cool 6 and Heat 6 the most aggressive. In your program you will determine what equipm ent you want to be ac tive in each of the stages. Of course, you do not need to use all the stages

When the air temper ature in the greenhouse r ises above the Cool Se tpoint, the s ystem enters the first s tage of cooling, referred to as Cool 1. If the temperature continues to rise, the system will enter the second stage, Cool 2, then the third stage, Coo l 3 and so f orth. At each incr easing cooling stag e, more cooling will be brought to attempt to bring the air tem perature belo w the cool setpo int and within the tar get “Norm al” temperature range. Heating works the same way.

In considering the difference between each heating and cooling stage there is a variable increment in the program which is the number of degrees between each heating and cooling stage called the “Stage Separation” or ‘Stage Width”. Whenever the temperature rises 1

1800 temperature rises 2 degrees abo ve the c ool setpo int the n the co ntroller will be ac tive in C 2 cool ing stage. T he same goes for the heating st age when the tem per ature drops below the heatin g setpoints . In Figure 2.1, ther e is an example with four cooling stages and two heating stages.

will activate the appropr iate equ ipment to bring the greenhouse to the normal temperature range. If the

you can program up to six cooling and six heating stages. These stages go

will enter cooling or heating stages to bring it

degree above the cool setpoint (700) then the iGrow

Deadbands

If the temperature is below the cool setpoint and rises into the first stage of cooling, some cooling equipment will be turned on. This may then lower the tem perature and bring it into the norm al range. In order to keep the equipment from osc illating, a “D eadband” is em plo yed when t he tem per ature is bet ween stag es. I n Figure 2. 1 the dead band is set at 1 degree so that when the greenhouse is attem pting to return to Normal temperature from C4 to C3 the controller will us e a dea dban d of 1 deg r ee to keep the equipment from oscillating of f and on. Now, when the temperature drops belo w the cool setpoint, the system remains in the Cool 1 stage until the temperature drops below the Cool D eadband. The c oncepts that we des cribed f or coolin g operate i n the s am e manner for heating.

Setpoint

You will be able to use up to 8 setpoints in a 24 hour time period. Within each day Setpoints are based on time and temperature to produce an ideal environm ent. By placing setpoints dur ing different times of the day you can regulate the temperature within a r ange for target tem peratures and hum idity. W hen a setpoint is in affect at a certain time length the c ontroller will activate the necess ary equipm ent in heating and coo l stages to bring the environment back to Norm. The sam e applies when the humidity rises or falls beyond the target lo w/high setpoint. When one or more setpoints are used the second or subsequent set points will become the active setpoint at the start time and the previous setpoint will end.

iGrow 1800 Installation Guide Page3 Link4 (714) 524-0004

Ramping

12am

2 3

4 5

8 9 10

12pm

2 3

4 5

9 10

65°F

70°F

75°F

Setpt 1

72.5°F

Setpt 1

68.0°F

Setpt 2

70.5°F

Beginning of

Ramp time

8:00am

End of

Ramp time

9:00am

Cool Stage 1

Cool Stage 2

Cool Stage 3

Cool Stage 4

Heat Stage 1 Heat Stage 2

Setpt 2

67.0°F

End of

Ramp time

6:30pm

Beginning of

Ramp time

6:00pm

1°F Deadbands

Normal

In addition, you have the option of a temper ature ramp between the setpoints. Each setpoint time period ends with a Ramp time. T he benefit of ramping allo ws for you to m ake smooth t ransitions within the greenh ouse so that the plants don’t exper ien ce temperature shock. Ram ping also s aves e ner g y, whic h trans lat es direc tly into lower operating costs.

In the example below, the start tim e is 8:00a with a 30-minute ramp time. The ramp time enables a smooth transition of the target temperatures between the setpoint time periods. Of course, the ramp times can be set to 0 and in this case there will be an immediate step transition in the set points. This is best explained by the illustration shown below.

Temp Range

Setpoint 1 is set to 9:00am with a 30minute Ramp, Temp is set as 68 to 72.5°F Setpoint 2 is set to 6:30pm with a 60minute Ramp, Temp is set as 67 to 70.5°F

Figure 2.1 Example of Setpoints, Stag ing, & Deadbands

iGrow 1800 Installation Guide Page4 Link4 (714) 524-0004

in this Example:

Control Strategy

Prior to installing and programm ing the iGrow 1800 it is important to determine an overall strategy to control



the environment in the greenhouse. The iGrow 1800

is an extremely flexible and powerful device, thus

additional care and planning are required. In order to aid you with the process, Link4 has provided several worksheets in the following pages. It is

assumed that you alread y poss ess a general un derstan ding of greenh ouse contro ls. If not, please re view this section carefully.

It is recommended that you make c opies of these sheets before using them . They will be useful in the future should your control need change.

The first worksheet is for temperature and humidity controls. It should be completed a s thor oughly as possible, depending on your needs.

The second worksheet is f or CO

2 in your greenhouse.

2 controls. Sk ip this worksheet if you don’t plan on regulating the amount of



The next 3 worksheets are for Irrigation. The iGrow 1800

supports up to 4 different modes of irrigation. Please see the Programm ing Section of this manual for additional inform ation for these m odes. These modes are supported on a per cha nnel basis, so any combinati on of them can be used dependi ng on your irrigation



needs. If there are no plans for irrigation or misting controls with the iGrow 1800

then these worksheets can

be skipped.

iGrow 1800 Installation Guide Page5 Link4 (714) 524-0004

Setpoint and Staging Work s he e t s

SET POINTS START TIME

H6 H5 H4 H3 H2 H1 N C1 C2 C3 C4 C5 C6 DH1 DH2 DHLT H

1 2 3 4 5 6 7 8

9 10 11 12

OUTPUTS

FOR ON/OFF & VENT ONLY

1 = ON 0 = OFF % = GO TO %

= NOT AFFECTED

HEATING STAGES

COOLING STAGES

DEHUMIDIFICATION

RAMP

TIME

HUMIDITY

Low Set Pt.

(%)

High Set Pt.

(%)

(min)

HUMIDIFICATION

EQUIPMENT

NAME

TEMPERATURE

Low Set Pt.

(°F/°C)

High Set Pt.

(°F/°C)

For more information on Staging, s ee the Cool/Heat Stages portion of this Manual. For more information on Setpoints, see the Setpoint/Timeperiod portion of this manual.

Note: Curtains are not tied to stagi ng (i.e. Ins ide Tem p), the y are contr olled b y light, outs ide tem perature

and overrides only.

Outdoor temperature, and water temperature.

Mix Valves are also not tied to staging, they independently adjust based on Indoor tem perature,

CO2 Worksheet

iGrow 1800 Installation Guide Page6 Link4 (714) 524-0004

Figure 3.1 Setpoint & Staging Workshe ets

9 10 11 12

EQUIPMENT

NAME

OUTPUTS

CO2 ENABLED

STAGE

CO2

MINIMUM

LIGHT LEVEL

(W/m2)

START TIME

(hh:mm)

END TIME

(hh:mm)

MINIMUM CO2

LEVEL

(ppm)

MAXIMUM CO2

LEVEL

(ppm)

For more information on CO

Accumulated Light Works he e t for Irrigation

Figure 3.2 CO2 Worksheet

control, see the CO

Equipment portion of this manual.

iGrow 1800 Installation Guide Page7 Link4 (714) 524-0004

1 2 3 4 5 6 7 8

9 10 11 12

EQUIPMENT

NAME

ON TIME

(hh:mm:ss)

OUTPUTS

ELEVATED

TEMP

(°F/°C)

MAX OFF

TIME

(hh:mm)

ACCUMULATED LIGHT MODE

START TIME

(hh:mm)

END TIME

(hh:mm)

ACCUMULATED

LIGHT LEVEL

LOW TEMP

(W/m2h)

LOW

TEMP

(°F/°C)

ACCUMULATED

LIGHT LEVEL

ELEVATED

TEMP

(W/m2h)

For more information on Accumulated Light mode irrigation, see the Irrigation portion of this manual.

1 2 3 4 5 6 7 8

9 10 11 12

START TIME

(hh:mm)

END TIME

(hh:mm)

TRIGGER MODE

CYCLE

TIME

(hh:mm)

CYCLE MODE

EQUIPMENT

NAME

ON TIME

(hh:mm:ss)

OUTPUTS

START

TIME

(hh:mm)

END TIME

(hh:mm)

Figure 3.3 Accumulated Light Worksheet for Irrigation

Cycle & Trigger Worksheet f or Irri ga t ion

For more information on Cycle & Trigger mode irrigation, see the Irrigation portion of this manual.

Figure 3.4 Cycle & Trigger Mode Worksheet for Irrigation

Schedule Worksheet for Irrigation

iGrow 1800 Installation Guide Page8 Link4 (714) 524-0004

T1 T2 T3 T4 T5 T6 Su M T W Th F Sa Su M T W Th F Sa

1 2 3 4 5 6 7 8

9 10 11 12

EQUIPMENT

NAME

ON TIME

(hh:mm:ss)

OUTPUTS

SCHEDULED MODE

START TIME

(hh:mm)

SCHEDULED IRRIGATION DAYS

For more information on Schedule mode irrigation, see the Irrigation portion of this manual.

Figure 3.5 Schedule Mode Worksheet for Irrigation

Installation

Content Inspection

It’s always a good idea to check to make sure your iGrow1800 came with all items listed below. Additional access ories suc h as outs ide tem perature s ensor , light se nsor, wind and ra in s ensors , and CO2

monitors can be purchased and added at any time. Make sure you have a ll item s, all associ ated hardw are, and n ecess ary tools bef ore you begin insta llation.

If there is any visible damage or missing parts, please contact our customer service at support@Link4corp.com or 1-866-755-LINK or fax us at 714.854-7244.

1. iGrow 1800

2. 12 VDC external Power Supply

3. Temp/Humidity Sensor with 50ft. cable

4. 4 pcs – 3/8” Drive, Hex Head Self Drilling Screws

5. 8 pcs – 1/4” Washers

6. 4 pcs – 1/4 -20 x 1” Hex Bolts

7. 4 pcs – 1/4 –20 Hex Nut

8. 1pc – small screwdriver (for tightening wire terminals).

Recommended Tool s

1. Drill

2. 3/8” socket drive drill bit with 3” extender

3. Adjustable Wrench

4. 1/8” high speed steel drill bit

5. 7/16” socket drive with 3” ex tender

6. Level (optional)

iGrow 1800 Installation Guide Page9 Link4 (714) 524-0004



unit

7. Pencil



Mounting the iGrow 1800



1. First, find a secure location to mount the iGrow 1800

controller. The area should be away from direct sunlight, condensing hum idity, rain, and extreme temperatures. It should be mounted in an easily accessible location at the user’s eye level.



2. Since the iGro w 1800

is equipped with a h inged door and a hinged access panel for easy service and installation, m ake sure there is adequat e workspace. T he recommended area is as diagramm ed in Figure 4.1.

Figure 4.1 Mounting Clearance for iGrow1600/1800



3. The iGrow 1800

comes with a 12V DC wall m ount power supply. Make sur e there is a power outlet within approxim atel y 6 f eet. It is rec om mended that the outlet is not s witc he d a nd i s o n a circuit tha t is independent of an y noisy, high power equipment. T he use of a sealed outlet is recommended if the power output is exposed to moisture.

4. There are 4 m ounting feet on the bac kside of the iGr ow 1800. For s hipping reasons , they have be en rotated inward so the y don’ t protrude f rom the sides of the iGr ow 1800. Usin g the Dr ill wit h #2 P hi llips drive, loosen the four feet and re-al ign them outward. Gentl y, but firmly, retighten the s crews holding the feet in place. The brass inserts can strip out so be careful to not over-tighten.



5. Next, you will want to identif y what type of surf ace you will be mounting th e iGrow 1800

to. Included are 4 self-drilling screws and washers for mounting to beam or wood panel. Also included are 4 pieces ¼ - 20 x 1in. Hex Bolts an d 4 piec es of ¼ - 20 Hex Nuts for mounting to a slotted beam . If you are using the Hex Bolts, make sure that you pre-drill a small pilot hole.



6. Using the appropriate tools depending on your surface, mount the iGrow 1800

. Refer to figure 4.2 for

a visual picture.

iGrow 1800 Installation Guide Page10 Link4 (714) 524-0004

MOUNTING TO BEAM

MOUNTING TO SLOTTED BEAM

MOUNTING TO WOOD PANEL

SCREW - 3/8" HEX DRIVE

SELF DRILLING

(4PL)

Part Number 370-0007-00

WASHER - 1/4" FLAT (4PL)

Part Number 371-0000-00

SCREW - 3/8" HEX DRIVE

SELF DRILLING

(4PL)

Part Number 370-0007-00

WASHER - 1/4" FLAT (4PL)

Part Number 371-0000-00

BOLT - 7/16 X 1" HEX DRIVE (4PL)

Part Number 370-0008-00

WASHER - 1/4" FLAT (8PL)

Part Number 371-0000-00

NUT - 7/16" HEX DRIVE (4PL)

Part Number 372-0000-00

iGrow 1800 Installation Guide Page11 Link4 (714) 524-0004

Figure 4.2 iGrow1600/1800



iGrow 1800

Overview



Now that the iGrow1800



iGrow1800

has many features to help give you the growing advantage. Figure 4.3 below gives an

has been mounted, take some time to look over the front panel. The

overview of the main components that the iGrow1800

Installation Instructions



has to offer.

Figure 4.3 Front View of iGrow 1600/1800

Note: There are convenient white spaces provided next to each of the switches to allow for easy

equipment labeling.

iGrow 1800 Installation Guide Page12 Link4 (714) 524-0004



Opening the iGrow 1800

1. First, open the clear hinged door by unlatching the two pull latches.



2. Now, loosen the two thumb screws until the iGrow 1800

‘s front panel comes out.

3. The front panel has a unique design that allows it to swing downward. It can be stopped at two positions: fully downward 180 deg or at 90 d eg. us in g t he f r ont p ane l s up port cab l e. This cable should always be tuck ed away when it is not being used. T he hinged desig n allows for easy accessibi lity to



the inside of the iGrow 1800

for service and installation procedures and a kink free cable

management when the panel is closed (see Figure 4.4 and Figure 4.5).

Figure 4.4 Full Open View of iGrow 1800

Figure 4.5 Front Panel, in the 90 deg. positi on

iGrow 1800 Installation Guide Page13 Link4 (714) 524-0004

Internal Layout



Figure 4.6 shows how the iGrow 1800 yourself with the internal layout before beginning the wiring process.



looks on the inside. Take notice of the board and familiarize

Figure 4.6 Internal Layout of the iGrow 1800 PCB

Wiring the iGrow 1800

Warning: Do Not Plug-in the Power in while wiring the iGro w 1800 and keep all toggle s witches in the

OFF position.

It is recommended that all c onnections be made throu gh the 4 liqui d tight conn ectors at the bott om of the iGrow 1800 additional holes in the to p, sides, or back of the enclosure can result in water condensation ins ide the unit, causing damage to the controller. Failure to install to Link4’s specification will void the warranty. In preparation for t he control wiring you should decide the iGro w 1800 strategy. For more informatio n on output assignment and control strate gies, please refer to the Control Strategy section and the appropriate worksheets for this manual.



since the glands compress around the cables to form a watertight seal. Making any



output assignm ents and control

iGrow 1800 Installation Guide Page14 Link4 (714) 524-0004

Power Supply Installation

1. If you want to navigate through the iGrow 1800 yourself with how it wor ks, begin b y installing t he pow er suppl y. Make sur e the power supp ly is NOT plugged while installing an y other outp uts or inputs .

2. Begin the pow er installation b y measuring the d istance between wher e the iGrow 1800 and the power sock et. There needs to be ab out 6 feet between t he two. If the power s upply is too short, then use a power extension cord.

3. Make sure all 12 manual toggle switches are in the OFF position (center).

4. Lower the front pane l to the 90 deg p osition b y using t he tuck ed awa y front panel suppor t cable. Se e figure 4.5.

5. Take the open end ( the two s tripped an d tinned leads ) of the power sup ply. T he RED le ad is t he 12V power and the BL ACK lead is the GND (ground). Route the power lead through the lef t most liquid tight connector. Remember not to plug in the power supply at this time

6. Locate the DC Input Power terminal along the left edge of the PCB. See Figure 4.6 and Figure 4.7.

7. Connect the Gro und le ad (BL ACK) t o the G ND term inal using a #0 screwdr iver. Mak e sure that when screwing to make it a snug fit. Be careful not to over tighten the connection.

8. Do the same and connect the 12V power lead (RED) to the 12 V terminal using a #0 flat drive screwdriver.

9. Now, if you want you can plug in the power to na vigate throug h the iGro w 1800 to install different outputs or inputs, but if you continue, remember to keep the power supply unplugged.

10. Power supply must be plugged into a water resistant outlet that is sourced from a clean 120V/6oHz circuit.



to see some of the features and to familiarize



is mounted



or you can continue

iGrow 1800 Installation Guide Page15 Link4 (714) 524-0004

Part Number 551-0000-00

Figure 4.7 Wiring the Power Supply

iGrow 1800 Installation Guide Page16 Link4 (714) 524-0004

Output Installation

The general installat ion strategy for this sec tion is to install the outp ut equipment in the gree nhouse first and then the inputs to keep the c ables organi zed in the iGrow 1800 have already planned the channel assignment. If not, please refer back to the previous section on Control Strategy.



All cables coming into an d out of the iGrow 1800

should go through the 4 liquid tight connector s at the bottom of the enclosur e. In order to m inimize interference, it is also recomm ended that the sens or input wires not be routed through the s ame connector as the power wires. For best r esults, route all sensor wires through the right m ost liquid tight connector an d then move toward the left. T he power wires and non-sensor wires are routed through the left most connector, and if needed, the next connector over.



. It is assumed that at this point you

Control Relays & Contactors



Your iGrow 1800 jumpers come set, from the factory, so that you can bring in a Master common 24 VAC. When wiring this wa y, as wetted, the line current on the mas ter common should not exceed 7 amps . If you remove a black jumper, its associated relay is then wired as a “dry” contact. See Figure 4.8 and Figure 4.9. The board mounted relays ar e intended as “pilot” relays. For m ost loads you will want the iGrow 1800 outputs to control a load rel ay or cont actor t hat is con nected t o the m otor. Ho wever, in some c ases suc h as irrigation valves tha t are 24 VAC, you can dr ive them directly ass uming that you are wir ing onl y one or two valves per relay. The maximum run current recommended for each of the iGrow1800 relays is 1 amp. There are voltage suppressors on each output to protect the iGrow 1800 from excessive inductive spikes. Additional protection should be used in the contactor panel if there are large inductive loads.

has twelve output rela ys that come set up with “wetted” c ontacts. The black terminal



Wet” and “Dry” Contact Design

“

A wet output switches the output to a s hared 24VAC so urce. There is one terminal f or each output (+) a nd a shared terminal for the 24VAC (master common)

A Dry output closes a switch. There are two terminals for each output (+) and (-). “Wet” contact installation design is us ed when con nec ting on e power wire to the m aster c omm on 24 VAC

source for multiple eq uipment such as ir rigation and then a single wire to the ap propriate channe l. “Wet” design installation is ut ilized to minimize the am ount of wires and fewer transformers. By default the black terminal jum pers are set in place. It is not necessar y to remove the blac k terminal jumpers when using a “wet” contact installation.

Note: Both of the MASTER COMMON term inals and the channel terminals are the s ame and provide a

maximum capacity of 7 amps. See Figure 4.8 for an example of a “wet” contact installation.

“Dry” contact installation design is used when a user wants to isolate equipm ent and use transform ers for every piece of equipm ent. In this case, put both the wires in the ap propriate channel and then rem ove the black terminal jum per for each channel wired as a dry contact. (you may replac e the black terminal back on only ONE pin for safe keeping). See Figure 4.9 for an example of a “dry” contact installation. It is also possible to utili ze both “wet” and “dry’ cont act installations at the s ame time. Ref er to the “wet” contact section to install a “wet” setup and refer to the “dry’ contact section to install a “dry’ contact. Remember when insta lling a “dr y” contact to rem ove the blac k term inal jumper f or each channel wired as a “dry” contact only. See Figure 4.10 to view an example of output wiring a combination of “wet” and “dry” contacts.

iGrow 1800 Installation Guide Page17 Link4 (714) 524-0004

RELAY COIL

FOR MOTOR

OR SOLENOID

CHANNEL 2

USE

BLACK TERMINAL JUMPER

FOR EACH CHANNEL WIRED AS A

WET CONTACT.

NOTES:

1. STRANDED 18

AWG

MAXIMUM WIRE GAUGE RECOMMENDED.

2. 30

VAC

MAX VOLTAGE.

3. MAXIMUM OF 1

AMP

CURRENT RATING PER CHANNEL.

4. MAXIMUM OF 7

AMP

CURRENT RATING ON MASTER COMMON.

DO NOT

WIRE 120/220

VAC

INTO iGROW 1400 OUTPUT TREMINALS.

6. IT IS RECOMMENDED THAT YOU RUN ALL OUTPUT WIRING THROUGH

THE

TWO CENTER

WATER TIGHT GLANDS.

VAC

TRANSFORMER

RELAY COIL

FOR MOTOR

OR SOLENOID

CHANNEL 1

RELAY COIL

FOR MOTOR

OR SOLENOID

CHANNEL 3

110 / 220

VAC

Figure 4.8 Output Wiring Example, Wet Contact

iGrow 1800 Installation Guide Page18 Link4 (714) 524-0004

VAC

TRANSFORMER

CHANNEL 1

CHANNEL 2

RELAY COIL

FOR MOTOR

OR SOLENOID

CHANNEL 4

CHANNEL 3

REMOVE

BLACK TERMINAL JUMPER

FOR EACH CHANNEL WIRED AS A

DRY CONTACT.

NOTES:

1. STRANDED 18

AWG

MAXIMUM WIRE GAUGE RECOMMENDED.

2. 30

VAC

MAX VOLTAGE PER CHANNEL.

3. MAXIMUM OF 1

AMP

CURRENT RATING PER CHANNEL.

4. MASTER COMMON NOT USED ON ANY CHANNEL WIRED

AS A DRY CONTACT.

DO NOT

WIRE 120/220

VAC

INTO iGROW 1400 OUTPUT TERMINALS.

6. IT IS RECOMMENDED THAT ALL OUTPUT WIRING IS RUN THROUGH

THE

TWO CENTER

WATER TIGHT GLANDS.

RELAY COIL

FOR MOTOR

OR SOLENOID

RELAY COIL

FOR MOTOR

OR SOLENOID

RELAY COIL

FOR MOTOR

OR SOLENOID

VAC

TRANSFORMER

VAC

TRANSFORMER

VAC

TRANSFORMER

110 / 220

VAC

110 / 220

VAC

110 / 220

VAC

110 / 220

VAC

Figure 4.9 Output Wiring Example, Dry Contact

iGrow 1800 Installation Guide Page19 Link4 (714) 524-0004

VAC

TRANSFORMER

CHANNEL 1

CHANNEL 2

RELAY COIL

FOR MOTOR

OR SOLENOID

CHANNEL 4

REMOVE

BLACK TERMINAL JUMPER

FOR EACH CHANNEL WIRED AS A

DRY CONTACT ONLY

FOR FURTHER EXPLAINATION OF DRY AND WET

CONTACT WIRING PLEASE SEE CHAPETER 4.

NOTES:

1. STRANDED 18

AWG

MAXIMUM WIRE GAUGE RECOMMENDED.

2. 30

VAC

MAX VOLTAGE PER CHANNEL.

3. MAXIMUM OF 1

AMP

CURRENT RATING PER CHANNEL.

4. MAXIMUM COMBINED CURRENT OF 7

AMPS

ON MASTER

COMMON TERMINAL.

DO NOT

WIRE 120

220

VAC

INTO iGROW 1400 OUTPUT TERMINALS.

6. IT IS RECOMMENDED THAT ALL OUTPUT WIRING IS RUN THROUGH

THE

TWO CENTER

WATER TIGHT GLANDS.

CHANNEL 3

CHANNEL 5

WET WIRING DRY WIRING

RELAY COIL

FOR MOTOR

OR SOLENOID

RELAY COIL

FOR MOTOR

OR SOLENOID

RELAY COIL

FOR MOTOR

OR SOLENOID

RELAY COIL

FOR MOTOR

OR SOLENOID

VAC

TRANSFORMER

VAC

TRANSFORMER

110 / 220

VAC

110 / 220

VAC

110 / 220

VAC

Figure 4.10 Output Wiring Example, Combination Wet and Dry Contact

iGrow 1800 Installation Guide Page20 Link4 (714) 524-0004

Hardware Interlock Jumpers

Hardware Interlock is a protective mechanical mechanism that prevents two adjacent outputs (1&2, 3&4, etc.) from coming on at the same time. It is useful for such equipments such as reversible motors and two speed motors, where it is vital that only one output be turned on at a time

The iGrow 1800 curtain, vent or two speed f ans enables inter lock jum pers. It is important to remove the paired s et of red jumpers with these types of equi pment to prevent the possibility of a short in the event the open and close switches are turned on at the sam e time. Usually, the contractors in the relay panel have m echanical interlocks to prevent this from happening and the iGrow interlock s act as a backup. Simply remove th e paired set of red term inal jumpers that are associate d with each channel wired as an interlock contact. See Figure 4.11and Figure 4.12 to view an example of “wet” and “dry” interlocked diagrams.

Note: When a paired set of red interlock terminal jumpers is removed, the corresponding front panel

switches will aff ect the manual o verride switc hes. Manua l toggle switc hes can be used to override , unless the motor or device is alrea dy active or in m otion. If you want to manually over ride a vent, curtain or two speed fan, put both switches in the Off position prior to switching On one of the switches.



is shipped with all the har dware interlock s disabled. Rem oving both jum pers for each

iGrow 1800 Installation Guide Page21 Link4 (714) 524-0004

USE BLACK TERMINAL JUMPER

FOR EACH CHANNEL WIRED AS A

WET CONTACT.

NOTES:

1. STRANDED 18

AWG

MAXIMUM WIRE GAUGE RECOMMENDED.

2. 30

VAC

MAX VOLTAGE.

3. MAXIMUM OF 1

AMP

CURRENT RATING PER CHANNEL.

4. MAXIMUM OF 7

AMP

CURRENT RATING ON MASTER COMMON.

5. DO NOT WIRE 120/220

VAC

INTO iGROW 1400 OUTPUT TERMINALS.

6. INTERLOCKS CAN ONLY BE PAIRED AS FOLLOWS:

1-2, 3-4, 5-6, 7-8, 9-10, or 11-12

ODD NUMBER OF ANY PAIR MUST BE WIRED AS OPEN

EVEN NUMBER OF ANY PAIR MUST BE WIRED AS CLOSE

7. IT IS RECOMMENDED THAT ALL O UTPUT WIRING IS RUN THROUGH

THE TWO CENTER WATER TIGHT GLANDS.

REMOVE RED TERMINAL JUMPER

FOR EACH CHANNEL WIRED AS A

INTERLOCK CONTACT.

BOTH JUMPERS OF

THE INTERLOCKED PAIR MUST BE REMOVED

FOR INTERLOCK TO WORK CORRECTLY.

RELAY COIL

FOR MOTOR

VAC

TRANSFORMER

110 / 220 VAC

COMMON

OPEN

RELAY COIL

FOR MOTOR

OPEN

CURTAIN, VENT, OR OTHER

CONTROLLER UNIT

Figure 4.11 Output Wiring Example, Wet Interlocked Pair

iGrow 1800 Installation Guide Page22 Link4 (714) 524-0004

RELAY COIL

FOR MOTOR

REMOVE

BLACK TERMINAL JUMPER

FOR EACH CHANNEL WIRED AS A

DRY CONTACT.

BOTH

JUMPERS OF THE

INTERLOCKED PAIR MUST BE REMOVED FOR

INTERLOCK TO WORK CORRECTLY.

NOTES:

1. STRANDED 18

AWG

MAXIMUM WIRE GAUGE RECOMMENDED.

2. 30

VAC

MAX VOLTAGE.

3. MAXIMUM OF 1

AMP

CURRENT RATING PER CHANNEL.

4. MAXIMUM OF 7

AMP

CURRENT RATING ON MASTER COMMON.

DO NOT

WIRE 120/220

VAC

INTO iGROW 1400 OUTPUT TERMINALS.

INTERLOCKS CAN ONLY BE PAIRED AS FOLLOWS:

1-2, 3-4, 5-6, 7-8, 9-10, or 11-12

ODD NUMBER

OF ANY PAIR MUST BE WIRED AS

OPEN

EVEN NUMBER

OF ANY PAIR MUST BE WIRED AS

7. IT IS RECOMMENDED THAT ALL O UTPUT WIRING IS RUN THROUGH

THE

TWO CENTER

WATER TIGHT GLANDS.

VAC

TRANSFORMER

110 / 220

VAC

COMMON

OPEN

RELAY COIL

FOR MOTOR

OPEN

REMOVE

RED TERMINAL JUMPER

FOR EACH CHANNEL WIRED AS A

INTERLOCK CONTACT.

BOTH

JUMPERS OF

THE INTERLOCKED PAIR MUST BE REMOVED

FOR INTERLOCK TO WORK CORRECTLY.

CURTAIN, VENT, OR OTHER

CONTROLLER UNIT

Figure 4.12 Output Wiring Example, Dry Interlocked Pair

iGrow 1800 Installation Guide Page23 Link4 (714) 524-0004

Input and Sensor Installation



The iGrow 1800 indoor/outdoor temperature and humidity, light, wind direction and speed, rain and CO

utilizes a variet y of different sensor s. In this section you will be shown how to inst all

sensors and a

Sensaphone.

Indoor Air Temperature a nd Humi dity Sensor



The iGrow 1800 temperature readings in direct sunlight. T he sensor includes a 50-foot sensor cabl e. Normally you will want to hang the sensor near the crop level close to the center of the controlled environment. It is important to keep the sensor away from irrigation em itters, unit heaters, etc. that will effect the accuracy of the sensor.

1. First, open up the f ront panel to the 90 deg. position, as shown in Figur e 4.5. Make sure the cab le

supports the front panel securely.

2. Find a central location in the greenhouse an d let it hang relatively close t o the height of where the

plants will be.

3. Run the free end of the sensor cable to the controller unit.

4. You may extend t he sens or c able as ne eded, but m ake sur e to us e an ada pter a nd wire appr oved by

Link4 to make any extensi ons (the wire and adapter can be purc hased from Link 4). Any extension wire must be shielded and stranded 24AWG type wire.

5. Carefully inser t the cable thr ough the right m ost watertight f itting at the bott om of the enclosure. It is

easy to strip insulat ion and/or break wires when pu ll ing cable. If you want to b und l e wires t ight er , us e UV protected “tie wraps” (typically blue or black), and do not over-tighten.

Note: If any splices are ne eded to extend c able length, m ake certain the y are WATERT IGHT. Water or

fertilizer infiltration WILL cause unstable sensor readings.

6. Connect the wires as shown in Figure 4.13.

7. Keep sensor cabl es away from interference sour ces, including high voltage power wir ing, inverters,

motor controllers, m ercury arc, or sodium lamp circuits. Placing sensor cable near such wiring m ay cause erratic sensor readings.

8. After installing the sensor, it is recommended that sensors be checked by plugging in the power

supply and testing u nder v ar ious c o nd iti ons bef ore moving on in order t o make sure the sens or works properly and accurately. Test the temperature by changing the indoor temperature to see if it is reading properly. After testing remember to unplug the unit to continue installing other sensors.

ships with a tem perature/humidity sensor in a rad iation shield to ensure accurat e air

iGrow 1800 Installation Guide Page24 Link4 (714) 524-0004

NOTES:

WHEN BOTH INDOOR AND OUTDOOR SENSORS ARE WIRED,

GND

VOUT

, AND

CLK

TERMINALS ARE SHARED BY BOTH SENSORS.

IT IS RECOMMENDED TO RUN ALL SENSOR WIRES THROUGH THE WATER TIGHT GLAND ON

THE FAR

RIGHT

SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOR

OUTPUT WIRING.

THIS DRAWING IS NOT TO SCALE.

4. SOFTWARE SETTINGS:

USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, A N D

ADJUST InT to SerialSens1. ALSO SET RelHum TO SerialSens1.

Part Number 990-0001-00

Figure 4.13 Wiring Indoor Temp/Humidity Sensor

iGrow 1800 Installation Guide Page25 Link4 (714) 524-0004

Light Sensor

Link4 offers two types of light sensors; Solar and Quantum. The Solar Light Sensor is sensitive to the visible light spectrum, whereas the Quantum version limits the light measurement to the 400 to 700 nanometer band where photos ynthesis takes place (PAR). Whichever type you’ve chosen, the installation only varies slightly.

1. Open up the front panel to the 90 deg. position, as shown in Figure 4.5. Make sure the cable

supports the front panel securely.

2. Find a location that is open and free from obstructions for the sensor to be expose to light from all

necessary angles.

3. Run the free end of the sensor cable to the controller unit.

4. You may extend t he sens or c able as ne eded, but m ake sur e to us e an ada pter a nd wire appr oved by

Link4 to make any extensions (the wire and adapter can be purchased from Link4).

5. Carefully insert th e cable th rough th e right m ost watertight f ittings at the bott om of the enclosur e. It is

easy to strip insulat ion and/or break wires when pu ll ing cable. If you want to b und l e wires t ight er , us e UV protected “tie wraps” (typically blue or black), and do not over-tighten.

Note: If any splices are ne eded to extend c able length, m ake certain the y are WATERT IGHT. Water or

fertilizer infiltration WILL cause unstable sensor readings.

6. Keep sensor cabl es away from interference sour ces, including high voltage power wir ing, inverters,

motor controllers, m ercury arc, or sodium lamp circuits. Placing sensor cable near such wiring m ay cause erratic sensor readings.

a. Connect the wires as shown in Figure 4.14a for Solar, and Figure 4.14b for Quantum light

Sensor.

7. After installing the sensor, it is recommended that sensors be checked by plugging in the power

supply and testing u nder v ar ious c o nd iti ons bef ore moving on in or der to make sure the se ns or work s properly and accuratel y. Test the light sensor by givi ng it light or covering to see dif ferent readings. After testing remember to unplug the unit to continue installing other sensors.

iGrow 1800 Installation Guide Page26 Link4 (714) 524-0004

NOTES:

IT IS RECOMMENDED TO RUN ALL SENSOR WIRES THROUGH THE WATER TIGHT GLAND ON

THE FAR

RIGHT

SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOR

OUTPUT WIRING.

THIS DRAWING IS NOT TO SCALE.

3. SOFTWARE SETTINGS:

USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, AND

ADJUST Light to Solar.

Part Number 990-0002-00

iGrow 1800 Installation Guide Page27 Link4 (714) 524-0004

Figure 4.14a Wiring Solar Light Sensor

NOTES:

IT IS RECOMMENDED TO RUN ALL SENSOR WIRES THROUGH THE WATER TIGHT GLAND ON

THE FAR

RIGHT

SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOR

OUTPUT WIRING.

THIS DRAWING IS NOT TO SCALE.

3. SOFTWARE SETTINGS:

USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, AND

ADJUST Light to Quantum.

Part Number 990-0009-00

Figure 4.14b Wiring Quantum Light Sensor

iGrow 1800 Installation Guide Page28 Link4 (714) 524-0004

Wind Direction and Wind Spee d (Anemometer)

1. Open up the front panel to the 90 deg. position, as shown in Figure 4.5. Make sure the cable

supports the front panel securely.

2. Find a location t hat is op en and fr ee from obstruct ions. Mount the m ast at the end of the greenhous e

or other building structure, with the top of the mast extending at least 3 feet above the top of the building.

3. Run the free end of the sensor cable to the controller unit.

4. You may extend the sensor cable to a maximum length of 150, but make sure to use an adapter and

wire approved by Link4 to make any extensions (the wire and adapter can be purchased from Link4).

5. Carefully insert th e cable th rough th e right m ost watertight f ittings at the bott om of the enclosur e. It is

easy to strip insulat ion and/or break wires when pu ll ing cable. If you want to bundle wires tighter, use UV protected “tie wraps” (typically blue or black), and do not over-tighten.

Note: If any splices are ne eded to extend c able length, m ake certain the y are WATERT IGHT. Water or

fertilizer infiltration WILL cause unstable sensor readings.

6. Keep sensor cabl es away from interference sour ces, including high voltage power w iring, inverters,

motor controllers, m ercury arc, or sodium lamp circuits. Placing sensor cable near such wiring m ay cause erratic sensor readings.

7. Connect the wires as shown in Figure 4.15.

8. After installing the sensor, it is recommended that sensors be checked by plugging in the power

supply and testing u nder v ar ious c o nd iti ons bef ore moving on in order t o make sure the sens or works properly and accurately. After testing remember to unplug the unit to continue installing other sensors.

9. If necessary, refer to the Anemometer installation instructions that are shipped with the unit for more

installation details.

iGrow 1800 Installation Guide Page29 Link4 (714) 524-0004

Part Number 990-7911-00

NOTES:

IT IS RECOMMENDED TO RUN ALL SENSOR WIRES THROUGH THE WATER TIGHT GLAND ON

THE FAR

RIGHT

SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOR

OUTPUT WIRING.

SOFTWARE SETTINGS:

USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, AND SET

WinSpd TO FDIn1, AND WinDir TO Analog7.

3. INSTALLING WIND VANE:

TWO PEOPLE, AND SEVERAL STEPS ARE NEEDED TO

INSTALL THE WIND VANE.

a. REFERENCING THE DAVIS INSTALLATION MANUAL (pages 3-7), INSTALL ANEMOMETER BASE

& ARM (BUT NOT THE WIND VANE YET).

b. CONNECT WIND DIRECTION WIRES TO THE iGROW1400, AND TURN ON iGROW1400.

c. ON THE iGROW1400 STATUS S CREEN, FIND THE READING FOR WIND DIRECTION.

d. HAVE SECOND PERSON CLIMB LADDER, AND SLOWLY ROTATE THE WIND VANE MOUNTING

SHAFT UNTIL THE iGROW1400 READS DUE NORTH. HINT: ROTATE THE MOUNTING SHAFT IN

SMALL INCREMENTS THEN WAIT ABOUT 8 SECONDS BEFORE READING THE WIND DIRECTION ON

THE iGROW1400.

e. USING A COMPASS, HAVE THE PERSON ON LADDER HOLD THE WIND VANE SO THAT IT IS

POINTING NORTH, THEN VERY CAREFULLY SLIDE IT ONTO THE MOUNT ING SHAFT.

f. GENTLY TIGHTEN THE WIND VANE SET SCREW.

g. WIND VANE INSTALLATION IS NOW COMPLETE, BUT DOUBLE CHECK THE INSTALLATION BY

ROTATING VANE TO POINT SOUTH, THEN AFTER 8 SECONDS VERIFY THAT THE iGROW1400 IS

READING SOUTH.

THIS DRAWING IS NOT TO SCALE.

iGrow 1800 Installation Guide Page30 Link4 (714) 524-0004

Figure 4.15 Wiring Wind Directi o n and Wind Speed

Rain Sensor (Tipping Bucket )

1. Open up the front panel to the 90 deg. position, as shown in Figure 4.5. Make sure the cable supports the front panel securely.

2. Find a location that is open and free from obstructions.

3. Run the free end of the sensor cable to the controller unit.

4. You may extend the sensor cable as needed, but make sure to use an adapter and wire approved by Link4 to make any extensions (the wire and adapter can be purchased from Link4).

5. Carefully insert th e cable through the rig ht most water tight fittings at the bottom of the enclosure. It is easy to strip insulation and/or break wires when pulling cable. If you want to bundle wires tighter, use UV protected “tie wraps” (typically blue or black), and do not over-tighten.

Note: If any splices are ne eded to extend c able length, m ake certain the y are WATERT IGHT. Water or

fertilizer infiltration WILL cause unstable sensor readings.

6. Keep sensor cables away from interference sources, including high voltage power wiring, inverters, motor controllers, mercury arc, or sodium lamp circuits. Placing sensor cable near such wiring may cause erratic sensor readings.

7. Connect the wires as shown in Figure 4.16.

8. After installing th e sensor, it is recomm ended that sensors be check ed by plugging in the power supply and testing under v arious conditions before moving on in or der to make sure the sensor works properly and acc urately. Make sure you test t h e rain s e ns or b y pouring some water in it as though it were raining to see if it senses rain. After testing remember to unplug the unit to continue installing other sensors.

Note: For shipping purposes, the rain sensor has a plastic zip tie that must be cut before it will work

properly.

9. Refer to the Rain sensor installation instructions that are shipped with the unit for more installation details.

iGrow 1800 Installation Guide Page31 Link4 (714) 524-0004

NOTES:

1. IT IS RECOMMENDED TO RUN ALL SENSOR WIRES THROUGH THE WATER TIGHT GLAND ON

THE FAR

RIGHT SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOR

OUTPUT WIRING.

2. THIS DRAWING IS NOT TO SCALE.

3. SOFTWARE SETTINGS: USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, AND SET

Rain TO FDIn2.

Part Number 990-7852-00

iGrow 1800 Installation Guide Page32 Link4 (714) 524-0004

Figure 4.16 Wiring Rain Sensor

Precipitation Sensor ( Fa s t Respons e )

1. Open up the front panel to the 90 deg. position, as shown in Figure 4.5. Make sure the cable supports the front panel securely.

2. Find a location that is open and free from obstructions.

3. Run the free end of the sensor cable to the controller unit.

4. You may extend the sensor cable as needed, but make sure to use an adapter and wire approved by Link4 to make any extensions (the wire and adapter can be purchased from Link4).

Note: If any splices are ne eded to extend c able length, m ake certain the y are WATERT IGHT. Water or

fertilizer infiltration WILL cause unstable sensor readings.

7. Connect the wires as shown in Figure 4.16a.

8. After installing th e sensor, it is recomm ended that sensors be check ed by plugging in the power supply and testing under v arious conditions before moving on in or der to make sure the sensor works properly and acc urately. Make sure you test the precipit ation sensor by sprinkling some water on it as though it wer e raining t o see if it senses rain. Af ter tes ting rem em ber to unp lug the unit to continue installing other sensors.

iGrow 1800 Installation Guide Page33 Link4 (714) 524-0004

NOTES:

IT IS RECOMMENDED TO RUN ALL SENSOR WIRES THROUGH THE WATER TIGHT GLAND ON

THE FAR

RIGHT

SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOR

OUTPUT WIRING.

THIS DRAWING IS NOT TO SCALE.

3. SOFTWARE SETTINGS:

USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, AND SET

Rain TO FDIn2.

TO 24VAC

WIRING INSIDE RAIN SENSOR

iGrow 1800 Installation Guide Page34 Link4 (714) 524-0004

Figure 4.16a Wiring Precipitation Sensor

Outdoor Air Temperatur e se ns or

Instead of a weather station, you may simply be mounting an outdoor air temperature sensor.

1. Open up the front panel to th e 90 d eg. positi on, as shown in Figure 4.5. Mak e s ur e the cable s u pport s the front panel securely.

2. Find a location that is open and free from obstructions such as anything that might cast a shadow.

3. Run the free end of the sensor cable to the controller unit.

4. You may extend t he sens or c able as ne eded, but m ake sur e to us e an ada pter a nd wire appr oved by Link4 to make any extensions (the wire and adapter can be purchased from Link4).

5. Carefully insert th e cable th rough th e right m ost watertight f ittings at the bott om of the enclosur e. It is easy to strip insulat ion and/or break wires when pu ll in g c able. I f you want to b und l e wires tighter, use UV protected “tie wraps” (typically blue or black), and do not over-tighten.

Note: If any splices are ne eded to extend c able length, m ake certain the y are WATERT IGHT. Water or

fertilizer infiltration WILL cause unstable sensor readings.

6. Keep sensor cabl es away from interference sour ces, including high voltage power wir ing, inverters, motor controllers, m ercury arc, or sodium lamp circuits. Placing sensor cable near such wiring m ay cause erratic sensor readings.

7. Connect the wires as shown in Figure 4.17.

8. After installing the sensor, it is recommended that sensors be checked by plugging in the power supply and testing u nder v ar ious c o nd iti ons bef ore moving on in order t o make sure the sens or works properly and accuratel y. Mak e sure you test th e sensor by changin g the tem pera ture aroun d it with a fan, heating or anything t hat will change the tem perature reading. Aft er testing remember to unplug the unit to continue installing other sensors.

iGrow 1800 Installation Guide Page35 Link4 (714) 524-0004

Part Number 990-0001-00

NOTES:

WHEN BOTH INDOOR AND OUTDOOR SENSORS ARE WIRED,

GND

VOUT

, AND

CLK

TERMINALS ARE SHARED BY BOTH SENSORS.

IT IS RECOMMENDED TO RUN ALL SENSOR WIRES THROUGH THE WATER TIGHT GLAND ON

THE FAR

RIGHT

SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOR

OUTPUT WIRING.

THIS DRAWING IS NOT TO SCALE.

WHEN CHOOSING LOCATION FOR INSTALLING OUTDOOR TEMP/HUM SENSOR, TEMP

ACCURACY CAN BE SLIGHTLY IMPROVED IF IT'S IN A SHADED AREA.

5. SOFTWARE SETTINGS:

USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, AND

ADJUST OutT to SerialSens2.

iGrow 1800 Installation Guide Page36 Link4 (714) 524-0004

Figure 4.17 Wiring Outdoor Temp/Humidity Sensor

Sensor

1. Open up the front panel to the 90 deg. position, as shown in Figure 4.5. Make sure the cable supports

the front panel securely.

2. Find a location that is inside the greenhouse and also free from obstructions.

3. Run the free end of the sensor cable to the controller unit.

4. You may extend the sensor cable as needed, but make sure to use an adapter and wire

approved by Link4 to make any extensions (the wire and adapter can be purchased from Link4).

5. Carefully insert th e cable through the rig ht most water tight fittings at the bottom of the enclosure.

It is easy to strip insulation and/or break wires when pulling cable. If you want to bundle wires tighter, use UV protected “tie wraps” (typically blue or black), and do not over-tighten.

Note: If an y splices are ne eded to extend ca ble length, m ake certain the y are WATERTIG HT. Water or

fertilizer infiltration WILL cause unstable sensor readings.

6. Keep sensor cables away from interference sources, including high voltage power wiring,

inverters, motor controllers, mercury arc, or sodium lamp circuits. Placing sensor cable near such wiring may cause erratic sensor readings.

7. Connect the wires as shown in Figure 4.18.

8. After installing the sensor, it is r ecommended that sensor be checked b y plugging in the power

supply and testing under v arious conditions before moving on in or der to make sure the sensor works properly and ac curately. You can perform this test by having one person brea th on the

sensor element (long cylinder protruding from the CO2 enclosure) while the other person

views the CO continue installing other sensors.

9. Refer to the CO

details.

reading on the iGrow1600/1800. After testing remember to unplug the unit to

installation instructions that are shipped with the unit for more installation

iGrow 1800 Installation Guide Page37 Link4 (714) 524-0004

NOTES:

SENSOR

MUST

BE CONNECTED TO ANALOG INPUT 6 TERMINALS (+AIN6 and -AIN6) OR THE iGROW1400

WILL

NOT BE ABLE TO READ DATA FROM IT.

IT IS RECOMMENDED TO RUN ALL S EN SOR WIRES THROUGH THE WATER TIGHT GLAND ON THE FAR

RIGHT

SIDE OF

THE iGROW 1400. THIS CONSER VES THE TWO MIDDLE GLANDS FOR OUTP UT WIRI NG .

SOFTWARE SETTINGS:

USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, AND ADJUS T CO2 to AnalogIn6.

WIRING FOR CO

SENSOR IS NOT INCLUDED, BUT CAN BE PURCHASED FROM LINK4 CORP. IF NEEDED.

AFTER INSTALLATION, CO

SENSOR MAY NEED UP TO 30 MINUTES TO STABILIZE IT'S READING.

6. CAUTION:

DURING INSTALLATION,

SENSOR IS SUSCEPTIBLE TO DAMAGE BY ST A TIC ELECTRICITY. BE SURE

YOU ARE WELL GROUNDED DURING INSTALLATION.

THIS DRAWING IS NOT TO SCALE.

Part Number 990-0004-00

VAC

TRANSFORMER

110 / 220

VAC

TRANSFORMER

TO 110 / 220

VAC

POWER SUPPLY

TRANSFORMER FOR CO

SENSOR NOT SUPPLIED BY

LINK4

SENSOR

TO iGROW1400

(~) +

24V

(~) -

0 (BLACK WIRE - )

V (RED WIRE + )

OUT

iGrow 1800 Installation Guide Page38 Link4 (714) 524-0004

Figure 4.18 Wiring CO2 Sensor

Bottom Heat Probes

Your iGrow1800 can support up to 5 temperature probes. The probes can be connected to any Analog Inputs between 1 to 5 (labeled as AIN1, AIN2, AIN3, on the circuit board)

1. Open up the front panel to the 90 deg. Pos ition, as s hown in Figur e 4.5. Make sure the cable supports the front panel securely.

2. Mount or hang your probes in the desired locations.

3. Run the free end of the sensor cable to the controller unit.

4. You may extend t he sens or c able as ne eded, but m ake sur e to us e an ada pter a nd wire appr oved by Link4 to make any extensions (the wire and adapter can be purchased from Link4).

5. Carefully insert th e cable th rough th e right m ost watertight f ittings at the bott om of the enclosur e. It is easy to strip insulat ion and/or break wires when pu ll ing cable. If you want to bundle wires tighter, use UV protected “tie wraps” (typically blue or black), and do not over-tighten.

Note: If an y splices are ne eded to extend ca ble length, m ake certain the y are WATERTIG HT. Water or

fertilizer infiltration WILL cause unstable sensor readings.

6. Keep sensor cabl es away from interference sour ces, including high voltage power w iring, inverters, motor controllers, m ercury arc, or sodium lamp circuits. Placing sensor cable near such wiring m ay cause erratic sensor readings.

7. Connect the wires as shown in Figure 4.19.

8. After installing the sensor, it is recommended that sensors be checked by plugging in the power supply and testing u nder v ar ious c o nd iti ons bef ore moving on in order t o make sure the sens or works properly and accuratel y. Mak e sure you test th e sensor by changin g the tem pera ture ar ound it with a fan, heating or anything t hat will change the tem perature reading. Aft er testing remember to unplug the unit to continue installing other sensors.

iGrow 1800 Installation Guide Page39 Link4 (714) 524-0004

Temp Probe 1

NOTES:

IT IS RECOMMENDED TO RUN ALL SENSOR WIRES THROUGH THE WATER TIGHT GLAND ON

THE FAR

RIGHT

SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOR

OUTPUT WIRING.

THIS DRAWING IS NOT TO SCALE.

3. SOFTWARE SETTINGS:

USING THE iGROW1400s KEYPAD, GO TO Setup Inputs, AND

ADJUST Temp1 to AnalogIn1, Temp2 to Analog2, Temp3 to Analog3 etc. THIS SENSOR CAN BE

CONNECTED TO ANALOG INPUTS 1 THRU 5. SIMPLY ADJUST THE SOFTWARE SETTINGS TO

MATCH WHICHEVER ANALOG INPUT TERMINAL YOU'VE CONNECTED THE SENSOR TO.

Temp Probe 4

Temp Probe 3

Temp Probe 2

Temp Probe 5

iGrow 1800 Installation Guide Page40 Link4 (714) 524-0004

Figure 4.19 Wiring Bottom Heat Probe

Wiring Sensaphone

A Sensaphone is used to notify the user via telephone, cell phone, or pager whenever the sens ors reach the user programmed temperature alarm limits.

1. Open up the front panel to th e 90 d eg. positi on, as shown in Figure 4.5. Mak e s ur e the cable s u pport s the front panel securely.

2. Find a location that is near the controller.

3. Run the free end of the cable to the controller unit.

4. You may extend the cabl e as needed, but make sure to us e an adapter and wire approved b y Link4 to make any extensions (the wire and adapter can be purchased from Link4).

5. Carefully insert the cable through the left most watertight fittings at the bottom of the enclosure. It is easy to strip insulation and/or break wires when pulling cable. Use UV protected “tie wraps” (typically blue or black), and do not over-tighten.

Note: If any splices are needed to extend cable length, make certain they are WATERTIGHT. Water or fertilizer infiltration WILL cause unstable sensor readings.

6. Keep cables away from interference sources, including high voltage power wiring, inverters, motor controllers, mercury arc, or sodium lamp circuits.

7. Connect the wires as shown in Figure 4.20.

8. Make sure you test the to see if the Sensaphone will contact the right number. After testing remember to unplug the iGrow 1600/1800 before continuing to install other sensors.

9. Refer to the Sensaphone installation instructions for programming the unit.

Sensaphone by programming a high and low limit and then make the alarms go off

iGrow 1800 Installation Guide Page41 Link4 (714) 524-0004

Part Number 990-1104-00

NOTES:

IT IS RECOMMENDED TO RUN THESE CABLES THROUGH THE WATER TIGHT GLAND ON THE FAR

LEFT

SIDE OF THE iGROW 1400. THIS CONSERVES THE TWO MIDDLE GLANDS FOT OUTPUT WIRING.

THIS DRAWING NO TO SCALE.

REMOVE

LO AND HI JUMPER

TERMINALS WHEN WIRING

SENSAPHONE

iGrow 1800 Installation Guide Page42 Link4 (714) 524-0004

Figure 4.20 Wiring Sensaphone

Expansion Units & Multi-Zone Network

Expansion Unit 2

Expansion Unit 1

Site Master

Expansion Unit 2

Expansion Unit 1

Zone Master

Expansion Unit 1

Zone Master Zone Master

Zone1

Zone2

Zone3

Zone4

Whether you need to setup multiple zones, add expansion units, or both, creating a network of iGrow 1800™’s is simple. However, there are a few important details to note. The cornerstone to connecting multiple Grow1800s™ together is choosing one unit to be setup as the Site Master.

The Site Master performs several important tasks:

• It Controls all communications within the network

• It is the only unit that can broadcast Weather Station data to other iGrow1600/1800™’s

• It is the only iGrow1600/1800™ in the network that can be connected to a computer for remote

management.

• It sets the time & date for all iGrow1800s in the network

Wiring - Plan for the first installed iGrow 1800™ to be the Site Master. Once all units are installed in their proper locations and all sensors tested, you are ready to connect the serial cable Regardless of which units will be Zone Masters or Expansion units, all units must be wired together in a serial fashion as shown in figure 4.21. Jumper Settings - Make sure to rem ove the blue jumper on the Site Mas ter and any following controllers, except for the last contro ller in the ser ial network chain. On the last un it of the net work chain, the bl ue jumper must remain installed, or the network won’t function properly. If you’re only connecting two iGrow1600/1800s™ together, remove the jumper from the first Site Master unit and leave it installed on the second unit. Programming - The last step in setting up the network is pr ogramming each unit to be a Site Master, Zone Master, or Slave (Slave un its are also called Expansi on units). Zone Masters and Slaves also need to k now which data to pull do wn from the network (such as weather station, temp probes, and zone setpoints). For instructions on how to do this, please ref er to “COMMUNICATIONS (Network Programming)” section of this manual.

iGrow 1800 Installation Guide Page43 Link4 (714) 524-0004

RED WIRE

GND WIRE

BLACK WIRE

REMOVE BLUE

JUMPER

KEEP JUMPER

ON LAST UNIT

IN NETWORK

CHAIN

RED WIRE

BLACK WIRE

RED WIRE

GND WIRE

BLACK WIRE

REMOVE BLUE

JUMPER

Master

Correct

Master/Expansion wiring configuration

Slave 2Slave 1 Salve 3

It is essential to connect networked iGrow1400s in

a serial fashion (as shown above). Any other

configuration will prevent the network from

functioning properly.

Incorrect

Master/Expansion wiring configurations

Expansion Unit #1

Slave 1

Master

Slave 1 Slave 2

Master

Slave 2

Expansion Unit #2

Salve 3

Slave 3

Master

Slave 1 Slave 2 Slave 3

Site Master

Figure 4.21 Wiring Serial Network

iGrow 1800 Installation Guide Page44 Link4 (714) 524-0004

Connecting to a PC

BLACK WIRE

GND WIRE

RED WIRE

CONNECT TO SERIAL PORT

ON YOUR PC, OR SERIAL TO

USB ADAPTOR CABLE

ORANGE WIRE

GREEN WIRE

RED WIRE

BLACK WIRE

GND WIRE

RED WIRE

NOTES:

IF SEVERAL iGROW 1400™s ARE NETWORKED TOGETHER, THE PC MUST BE CONNECTED TO THE MASTER UNIT ONLY.

ONCE THE iGROW 1400™ IS WIRED TO THE PC, INSTALL THE REMOTE MANGEMENT SOFTWARE ON THE PC. PLEASE

REFER TO THE INSTALLATION GUIDE PROVIDED WITH YOUR REMOTE MA N GEMENT SOFTWARE TO COMPLETE THE

SOFTWARE INSTALLATION.

To connect your iGrow1600/1800 to a PC, please see Figure 4.22

iGrow 1800 Installation Guide Page45 Link4 (714) 524-0004

Figure 4.22 Connecting to a PC

Programming your iGrow 1800

Before You Begin Programming

Before the iGrow 1800™ is programmed, it is recommended that the following steps are followed: Hardware is properly installed and tested with manual switches. All toggle switches have been restored back to the OFF state. All the templates from Chapter 3: Control Strategies that are relevant to your application are understood and are completely filled out.

Navigation

The iGrow 1800™ has a 7 button keypad. The behaviors of the keys are:

- Used to edit (decrement) alphanumeric parameters. See also Browse Mode.

+ Used to edit (increment) alphanumeric parameters. See also Browse Mode.

Prev Used to move backward f rom screen to screen in brows er mode or to the previous entry in the “edit”

mode.

Next Used to move forward from screen to screen in browser mode or to the next entry in the “edit” mode. Back Used to move back up one menu level and save any changes that have been made. Help Pressing Help will give you hints for whatever page you happen to be on. Enter/ Pressing this key initially goes to the menu screen and after that it is used to enter. MENU subsequent highlighted screens. See also Browse Mode.

Note: When browsing through the menu, highlighted text signifies that it can be modified.

iGrow 1800 Installation Guide Page46 Link4 (714) 524-0004

Status Screens and Programming Screens

When operating the iGrow 1800 you will use Status Screens and Programming Screens.

Status screens show:

• Sensor readings

• Equipment status

• Daily averages, etc.

Programming screens are where you s etup and adj ust:

• Equipment

• Setpoints

• Overrides

• Other settings important related to your greenhouse

The Navigation Menu Map on the following page shows all the primary screens.

(Inside Temp, Weather Station, Temp Probes, CO2)

Status Screens

Welcome Screen

Upon power up or a har dware reset (see Res et Controller f or more information), the iGrow 1800™ will briefl y display the W elcome screen below. After 5 seconds, the iGrow 1800™ will autom atically display the Main Status screen.

Welcome to the

iGrow 1600/1800

V1.03.20

iGrow 1800 Installation Guide Page47 Link4 (714) 524-0004

Main St atus Screen

COOL2 SetPt 72.0+ InT 75.0°F RelHum OutT 95.3°F 42% dh1

12:34P Tue 07/05/05

The main status screen displa ys the current status of your greenhouse zone. The numbers shown are only sample numbers and will differ for each user, but a description for each display will be explained.

Note: Use the NEXT and BACK buttons to scroll through Status Screens.

Cool 2

This is the current temperature stage. It can go from Cool 6, to Normal, to Heat 6.

SetPt

This is the current setpo int f o r c ooling , or if it ’s in a h eat stage, it will be the heat setpoint. For the Nor mal stage both the lower and upper setpoints are shown, respectively.

Note: A + sign after the SetPt reading (72.0+) indicates Heat Boost condition. Please refer to the Dehumidification/Humidification section for a description on Heat Boost.

InT

This is the current indoor temperature reading from the indoor temperature sensor.

OutT

This is the current outdoor temperature reading, if you have an outdoor temperature sensor.

RelHum

This is the current humidity reading in the zone

dh1

This is the current dehumidification stage. The possible entries are (dh1, DH1, dh2, DH2, dhlt, DHLT, h, H, and blank). Blank means that the humidity level is acc eptable. If this field is hi ghlighted, it means that the iGrow 1600/1800™ is in the dehumidification override mode. Since the dehumidification control can be programmed to cycle on and off (See Dehumidification/Humidification Section), the DH1 status indicator can cycle between DH1 and dh1, indicating that the dehumidification process is on and off, respectively.

The last line displays the current time, day of the week and date at the bottom of the screen.

iGrow 1800 Installation Guide Page48 Link4 (714) 524-0004

iGrow 1800 Installation Guide Page49 Link4 (714) 524-0004

Sensor Status Display

CO2 1000 ppm

Temp5 70.5 °F

Light 1000 W/m2 Wind SSE 15 mph Rain No Temp1 77.0 °F Temp2 79.4 °F Temp3 69.8 °F Temp4 71.2 °F

The Sensor Status Display screen(s) will show you readings for whichever sensors you have attached.

Current CO Light

Current light reading. The light sensor is typically installed outdoors with a maximum reading of 2000 Watts/meter squared OR in Klux with a maximum of 120Klux.

Wind This wind speed reading is displayed in miles per hour or kilometers/hour, along with the win d direction display with one of 8 possible directions: N, NE, E, SE, S, SW, W, NW

Rain The rain detector indication is either “Yes”-there is rain or “No”-there is no rain.

Temp Probe Number You can have up to 5 temperature probes attac h ed to your iGrow1800. By mapping your Input Settings, you can assign each probe to whichever Temp Probe Reading (Temp1, Temp2, etc.) that you want.

reading, in ppm.

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Equipment Status

Jun 21 Avg Min Max InT 78 74 84

50 41 61

01 Irr1 6 Waiting 02 Irr2 2 46 03 Irr3 3 3:00p

04 Irr4 39 58

05 CO2 Off 07 Vent1 99%

09 Curt1 40%

12 Heater Off

Pressing the Next key again will display the status for each piece of equipment assigned to the various output channels, up to 4 equipment status’ can be displayed simultaneously. The Next/Prev key allows you to page back and forth between the programmed equipment status screens. An example follows:

These screens display the current status of the equipment outputs.

First column

This first column is the Channel number. Keep in mind that for Vents and Curtains, two channels are taken up. In the example above, 7/8 are vent outpu ts and 9/1 0 are curtain outputs. Note that equipment #11 is not used, thus it is not displayed.

Second column The second column is the E quipment name assigned to that channel. Names are lim ited to 5 alphanumeric characters.

Third column The third column is the number of times that the respective output has been triggered in irrigation mode.

Fourth column

The fourth column is the cur rent status reading of the eq uipment. Waiting indicates that the Ir rigation output configured in triggered mode is waiting for a trigger. In Accumulated light mode, the Irrigation output will display the current accumulated light level. In scheduled mode, the Irrigation output will display the next scheduled start time. In cycle mode, the Irrigatio n output will display the amount of time remaining (i n minutes) until the next irrigation cycle.

Note: When the text on the status screen is highlighted, this means the equipment is being overridden. See the

Equipment Override Section.

Yesterday’s Averages Status

This screen displays the average, min, and max of InT (Inside Temperature), Hum (Humidity), and OutT (Outdoor Temp) from yesterday. Yesterday is defined as 5:00AM (yesterday) to 4:59AM (today).

iGrow 1800 Installation Guide Page51 Link4 (714) 524-0004

Hum

OutT 78 74 83

Cool Demand

Cool/Heat Stages

Clear History

Programming Screens

Begin Programming

From any Status Screen, press the ENTER/MENU key to enter programming mode. Press NEXT and PREV to scroll up and down in this screen. To make changes to any of the items in the screen below, press ENTER.

System Setup

Setpoint/TimePeriod Advanced Setpoints Program Equipment Dehumidify/Humidify Stage Overrides Equipment Overrides Smart Cool Settings Setpoint Alarms Auxiliary Controls Expansion Settings Heat Demand

System Setup (installation settings)

If you’re setting up your iGrow1600/1800 for the f irst time, then the first task is to program all applicable item s found under System Setup.

If the ENTER/MENU key is pr essed while the S ystem Setup field is highlighted, t hen the iGro w 1600/1800™ will display the Menu selection for the System Setup section of the iGrow 1600/1800™.

iGrow 1800 Installation Guide Page52 Link4 (714) 524-0004

Setup Deadbands Setup Location Outputs Control VPD Settings Cyclic Lighting Setup Inputs Setup Accumulators Input Multipliers Calibrate Inputs Time/Date & History System Units Communications Fallback Settings Advanced Settings Smart Cool Factors

Pressing the Enter key again will take you to the following screen:

Cool/Heating Stages

Cool Stages 6 Heat Stages 6

Stage Width 1.0ºF

On this screen you will selec t the maximum number of cooling and heating stages that you i ntend to use. The up and down arrow keys are used to increase or decrease the amount of stages for cooling and heating. If, for example, you select 2 he ating stages, then in the rem ainder of the pro gramm ing only 2 heat ing stages will be displayed The third selection is the Stage Width. This is the number of degrees between each of your stages, sometimes referred to as “Stage Separation”. Typically, users select either 1 or 2 degrees.

Setup Deadbands

Cool Deadband 1.0ºF Heat Deadband 1.0ºF RelHumDeadband 3% BHeat Deadband 1.0ºF

Deadband This is sometimes called “hysteresis” band. For cooling, it is the num ber of degr ees the tem perature needs to drop from the lower boundar y of its current stage before it switches to the lower stage. W ithout Deadbands, equipment tends to cycle frequently & constantly change stages when the temperature approaches the set points. When a large valu e is us ed, setpoi nts m a y not be m aintained. T ypical values m ight be 1 to 2 degrees F. For heating it is th e number of degrees the temperature ne eds to rise above the temperature bou ndary before it switches to a lower heating stage.

RelHum Deadband This is the RH% the humidity must drop below the dehumidification threshold before exiting the dehumidification state. It also is the RH% the humidity must rise above the humidification threshold before exiting the humidification threshold.

Bheat Deadband This is the number of degrees that the bottom heat temperature mus t rise above the bottom heat tem perature setpoint or threshold before the heat valve switches off. Typical values might be 1 degree F or less.

Setup Location

iGrow 1800 Installation Guide Page53 Link4 (714) 524-0004

Latitude 34 N Longitude 118 W

The iGrow 1800™ has an in ternal astronomic al clock. By knowing the actual c oordinates, sunrise and s unset times can be precisely calculated. Go to www.heavens-above.com to find coordinates for your precise location. If a negative longitude is given you are west, and if a negative latitude is given you are south.

Outputs Control

Rain Hold Time: 01 m Cmd Delay: 01 m 00 s Irr Mode Concurrent Irr Delay 00 m 05 s

Start Delay 01m 00s

Rain Hold Time Rain Hold Time is a param eter that lets you choose how long you want the rain override condi tion to persist after the rain status goes from Yes to No. T his is to keep intermittent rain from causing the vents to keep opening and closing.

Cmd Delay Cmd Delay is the time between comm ands to change the equipm ents’ states . It is the shortest tim e permitted for switching equipments. Typical update times are from 1 to 2 minutes. This parameter is used to minimize the cycling of the equipment.

Irr Mode

Irr Mode is either Concurrent or Sequential. You can choose between the t wo options b y press ing the + or key. These options apply if you program more than one irrigation valve to trigger based on accumulated light or a dry contact switch c losure, or if you select the cycling (misting) option. If you select Concur rent, then the valves will turn on immediately when requested regardless of how many are already on. If you select Sequential, then the first one will turn on but if other valves are to come on, they will wait in queue and each one will come on in succession. (Also see Jumper section to make sure your settings are correct).

Irr Delay Irr Delay forces a user definable delay between the valves. In other words, when the current On valve goes Off, the next valve in the queue will wait the selected min and sec before it turns On.

Start Delay

This is the time duration upon a power st artup befor e the first equipm ent can turn on. This is impor tant when you have multiple controllers in the event of a power outage. Each controller should be set with a different start delay.

iGrow 1800 Installation Guide Page54 Link4 (714) 524-0004

VPD Settings

VPD Settings Media Sensor Temp11

This is where you select the sensor that is measuring the plant temperature for the VPD measurement

Cyclic Lighting

Cyc. Mode Sequential hh:mm

Start Delay 00:00

Finish Delay 00:00

There are two modes available for cyclic lighting: Sequential and Concurrent. Sequent ial is when one light bank comes on at a time. Concurrent is when they all come on at the same time.

The Start Delay is at the beginning of the cycle and the Finish delay occurs at the end. See diagram below.

hh:mm

Min On Time 00:00

The Min On Time is the shortest time that the lights will be on. This is to eliminate “short cycling” of the lights.

The figure below illustrates the case where you selected the sequential mode and you have two light banks. The start delay is at the beginning of the cycle. (Each light bank is programmed separately as to the time window for the light bank to be enabled and the on time for each light bank. The channel programming is shown in the section Programming Equipment and the subsection Cyclic Lighting.) The Start delay occurs at the beginning of the cycle and the Finish delay at the end.

In this Sequential mode the overall cycle time is equal to the Start Delay + Sum of all light channel On Times + Finish Delay. During the Start Del a y and Finish Delay times, all the lights are off so this is in effect the Off Time.

iGrow 1800 Installation Guide Page55 Link4 (714) 524-0004

In the Concurrent mode, all the channels will come on at the same time. Typically, the Start Delay will be set to 0:00 and the Finish Delay will become the Off Time. See Diagram below:

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Setup Inputs (sensor ma pping)

InT ⇚ SerialSns1 OutT ⇚ SerialSns2 RelHum ⇚ SerialSns1 CO2⇚ AnalogIn6 OLight ⇚ Solar InLight ⇚ None WinSpd ⇚ FDIn1 WinDir ⇚ AnalogIn7 Rain ⇚ FDIn2 Snow ⇚ None BkUp InT ⇚ None Pressure ⇚ None IrrTrig⇚ DigitalIn1 OutHum ⇚ SerialSns2 Temp1 ⇚ AnalogIn1 Temp2 ⇚ AnalogIn2 Temp3 ⇚ AnalogIn3 Temp4 ⇚ AnalogIn4 Temp5 ⇚ AnalogIn5 VPos1 ⇚ AnalogIn1 VPos2 ⇚ AnalogIn2 VPos3 ⇚ AnalogIn3 VPos4 ⇚ AnalogIn4 VPos5 ⇚ AnalogIn5 pH1 ⇚ AnaIn1 pH2 ⇚ AnaIn2 pH3 ⇚ AnaIn1 pH4 ⇚ AnaIn2 5uS EC3 ⇚ AnaIn3 Soil1 ⇚ None Soil2 ⇚ None Soil3 ⇚ None Soil4 ⇚ None Soil5 ⇚ None Generic1 ⇚ None Generic2 ⇚ None Locl Tmp ⇚ None Locl Hum ⇚ None

Setup Inputs is where you tell your iGrow1600/1800™ what sensors you are using (this is also called sensor mapping). The scr een above sho ws the t ypical sensor m apping f or each s ensor. If you don’t have a particu lar sensor then leave the setting as None.

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Note: For Zone Master and Slave units, you should set all weather station se nsors (OutT, OLight, WindSpd,

Accumulator 1

Multiplier OLight

Multiplier CO2

WindDir, and Rain to Remote. Setting the weather station s ensors to Rem ote means the Sla ve unit or Zone Master will get their weather station data remotely from the Site Master.

PREV and NEXT keys move the c ursor from one input selection to the next. Us ing the + and - k eys you can select which one of the input channels to assign to your sensors. Note that the allowable choices vary from one type of sensor to another. If any given sensor is not present, None should be selected. The Software choice is useful for testing and debugging if you just want to for ce the reading to a particular value. T he software value can be modified through the Calibration Inputs screen below. The Backup Sensor is an optional way to tell the iGrow 1800™ which sensor it should default to in the case of a failure on the InTemp temperature sensor.

Note: For the Backup Sensor to be used, to must be Enabled. See also Fallback Settings below to Enable the

Backup Sensor.

Setup Accumulators

Sensor: None Operating Period: 24 Hour

There are two accumulators that can be used. They can be used for the outdoor temperature influence on the indoor temperature setpoint or in conjunction with auxiliary controls. Any of your sensors can be utilized for the accumulation purposes. There are two operating period options: 24 Hour or Setpoint Change: If the 24 hour period is selected, then the accumulator begins at 12:00 AM and ends the accumulation at 11:59 PM. The data is logged and time stamped and the accumulator is reset. If the Setpoint Change option is selected, then the accumulator begins at the start of a setpoint interval and the accumulator is reset at the end of the period.

Input Multiplier

The Input Multiplier option is for calibrating the outside light sensor (above) or a CO2 sensor (below), if you have one. The Raw Value is the actual reading from the sensor. The Factor for the light sensor is the multiplier adjustment. Use the + or - keys to move the value up or down from 1.0. The Adjusted Value is the product of the Raw Value and the Factor. The adjusted value will be the one reflected on the front screen.

iGrow 1800 Installation Guide Page58 Link4 (714) 524-0004

Raw Val 0 W/m2 Factor 1.000 x Adj Val 0 W/m2

Raw Val 0 ppm Factor 2 LSB Adj Val 0 ppm

Calibrate InTemp

Time 12:17P

CO2 LSB The Factor for the CO2 adj ustment is the Tuning r ange. It determines the complete range of a CO2 s ensor. For example, a 2 means the CO2 range will be 0-2000ppm, a value of 3 would set the range to be 0-3000ppm.

Calibrate Inputs

Raw Value 73.6ºF Adjust 0.5ºF Adj Value 74.1ºF

Calibrate To calibrate an input you must first select the sensor you want to calibrate. Press the + or - keys to c ycle through the various sensors. Once you have selected your sensor, press enter an d it will take you to the adjustment line.

Raw Value Raw Value is the direct reading from the sensor. Using the + or - keys will add a positive or negative adjustment to the raw reading giving you an adjusted value.

Adj Value Adj Value is what will be reflected on the front status screen.

Time/Date & History

Time

Time adjusts the current time b y highlighting th e field an d press ing either the + or - keys. T his will a llo w you t o scroll through the entire 24 hours.

Date Do the same for the date. Press Enter to go from field to field and adjust the correct date.

Daylight Savings If you want the program to automatically adjust itself for Daylight savings time, select YES. If not, select NO.

Log History This option lets you choose how often the controller will log sensor and equipment histor y information. In this case it saves log history every minute, but can be changed to different lengths of time. If you put 00:00, then it will save information every second.

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Date 04/26/2005 Tue DaylightSavings Yes Log Hist: 00:01 h:m

Note: In the United S tates and Canada Daylight Saving Tim e begins on the second Sunday in March and

System Units

iGrow-to-iGrow Link

reverts back to standard time on the first Sunday in November.

System Units

Temperature ºF Wind Speed mph Light W/m

Temperature Choose either degrees Fahrenheit (ºF) or degrees Centigrade (ºC).

Wind Speed Choose either miles per hour (mph) or kilometers per hour (km/h).

Light Choose either Watts/meter

or klux.

Communications (Network Programming)

Once multiple iGrow controllers are wired together (as shown in Figure 4.21), you will need to set up each iGrow 1800’s program settings for proper communications. Note that the most important iGrow1600/1800 in the network is the one you choose to be the Site Master. The Site Master controls all network communications and is the only unit that a Weather Station and PC can be connected to.

Site Master

To setup your Site Master press Enter/Menu  System Setup  Communications. Under the “ Communications” screen you’ll find several editable fields. By default the text Disabled will be highlighted. Use the + and - buttons to chang e this s ett ing to Site Mas ter. Now press the BACK button three times (or until you see the Main Status screen) to save your changes. That is all that’s neces sar y to setup the Site Master . Your Site Master is now ready to communicate with you network and PC.

Zone Master

To add a Zone, simply set a unit to Zone M aster, You can set the Zone number , and choose to use its own “Local setpoints” or the Site Masters “Remote setpoints”. Now press the BACK button three tim es (or until you see the Main Status screen) to save your changes.

• Local setpoints are the setpoints on the Zone Master itself

• Remote setpoints are the setpoints of the Site Master Unit

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Site Master Zone 1

Channels 01 to 12 Use Local Setpoint

iGrow-to-iGrow Link

Zone Master Zone 2

iGrow-to-iGrow Link

Fallback

Channels 01 to 12 Use Local Setpoint

Note: Be sure that ZoneMast er Units ar e set u p in s e q uent ia l order . F or Ex ample, if you have three Zone

Masters, set their zone nu mberto be in order i.e. 2,3,4. DO NO T j um p over one s uc h as 2,4,5. The iControl software will not function properly.

Slave Unit

For Slave Units (also called Expansion Units), set to Slave Unit. Then set which zone the unit will be an expansion unit to, i.e. Site Mas ter Zone 1, or some other Zone Mas ter. Since each zone can ha ve up to 3 Expansion Units you must also decide which expansion unit it is.

• Expansion Unit Outputs 13-24

• Expansion Unit Outputs 25-36

• Expansion Unit Outputs 37-48

Note: Be sure that Expansion Units are set up in sequential order. For Example, if you have only two

expansion units be sure t o set one as 13-24 an the other to 25-36. DO N OT jump over one such as 1324 and 37-48. The iControl software will not function properly.

Slave Unit Zone 1

Channels 13 to 24 Use Remote Setpoint

Similar to a Zone Master, yo u can choose to use Local or Remote Setpoints. But in this case, if you choos e Remote setpoints, the Expansion unit will use the Zone Master’s setpoints NOT the Site Master’s setpoints.

Now press the BACK button three times (or until you see the Main Status screen) to save your changes.

Note: Once you setup the Site Master, Zone Mas ter(s ) and Expans ion Unit(s ), you sh ould label the f ront panel

on each unit for easier reference in the future.

Fallback Settings

Sensor Enabled High Alarm Disabled Force to NORM

Sensor

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This feature is used if there is an InTemp sensor failure and you want the controller to fallback into utilizin g the

MixValve Param Hide

Disabled

backup Sensor (OutTemp, or other temp sensor you have defined in the Setup Inputs sec tion). By choosing the fallback option to Enabled m ode, the controller will autom atically detect an InTemp sensor failure and fall back to the backup Sensor. If Fallback is Dis abled, then ther e is no actio n to utilize a backup sensor and the iGrow 1800 will engage the Force to condition.

High Alarm

If you enable the High Alarm, the iGrow will trigger an alarm upon temp sensor failure. Force to

In case of a Fallback failure scenario, or if Fallback is Disabled, the third level of safety is to force the iGro w 1800 into any stage automatically. In the example screen above, the iGrow 1800 would engage whatever equipment you have assigned to be ON under NORM conditions.

Advanced Settings

Equipment Delay 3 s Error Report Hide Comm Diag Scrn Hide Curtain Energy Mode Light Hyst 50% Temp Hyst + 5ºF Heat Demand Show Cool Demand Show Heat Offset 5.0 F Cool Offset 5.0 F Gen1 Filter Samples 06 Generic Sensors Precision Units G1 d.dddd inH2O G2 d.dddd inH2O Gen PID Multiplier P 0100x I 00.1x D 0001x Bump ENABLED Bump Hold 5m AutoDetect ON RESET Reset Error Hide Temp Delta 5.0 F Temp Delay 00m 00s BHeat Delay 00m 00s Loud Vent

Advanced If you wish to use PID Mix Valve operation then the MixValve Param option must be set to from Hide to Show. This will activate two addit ional menu s creens located u nder the MixV e quipm ent type menu. Us e the + and keys to change setting from Hide to Show.

Equipment Delay iGrow 1800 Installation Guide Page62 Link4 (714) 524-0004

Time the iGrow1800 will wait to switch from one equipment to the next

Error Report

This is for diagnostic purposes and it is advisable to contact Link4’s technical support for more details. Comm Diag Scrn

By toggling this field to Show, a status screen will become visible that allows you to see if this iGrow is communicating with other iGrows on the network

Curtain Energy Mode

Light Hysteresis onl y applies to curtains in Energ y Mode. Once a curtai n closes, for it to reo pen due to

light, the new light reading m ust be higher than the close value by: Clos e Value times H yst value plus the Close Value.

For exam ple, let’s say the Hyst Value is 50% . If the curtain closes at 100W /m², then to reopen it t he light level must reach 150 W/m² (or 100x50% + 100).

Temp Hysteresis is similar to Light Hysteresis, and only applies to curtains in Energy Mode. Once a curtain closes, for it to reopen due to tem perature increase, the new temperature r eading must be higher than the close value by: Close Value plus the Temp Hysteresis value.

For example, let’s say the Hyst Value is +5ºF. If the curtain closes at 70ºF, then to reopen it the temperature level must reach 75ºF (or 70+ 5).

Note: Regardless of what causes a curtain to close, during energy mode either Light Hyst or Temp Hyst can re-

open it.

Heat Demand

Toggling this field to Show makes the Heat Demand visible in the status screens

Cool Demand

Toggling this field to Show makes the Cool Demand visible in the status screens

Heat Offset

Heat Offset is a calibration factor for your heat demand

Cool Offset

Cool Offset is a calibration factor for your cool demand

Gen1 Filter Samples

The number of samples over which the filter operates is controllable with the Generic 1 sensor. A typical number is 6 samples. The average over the samples is a running average, meaning as one sam ple gets dropped off another gets a dded. The sam e adjustable number of sample option does not ex ist for Generic 2 sensor.

Generic Sensors – Precision Units

For a number of sensor types, you can set the range of measurement and the units. The first entry is the range which goes from d.dddd to ddddd. You select the units for the sensor in the 2 follows:

In H2O

V (Volts) Ma (Milli amps) Count

ºF

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e ntry. The options are as

ºC k lux W/m2 Km/h Mph ppm hPa (hector pascals;, 1hPa = 1 millibar) kPa (kilopascals)

Gen PID Multiplier

The P, I and D parameters for the generic PID controller can be scaled with the use of the multiplier option.

Bump

Enabling the Bump option provides for the automatic re-calibration of the proportional devic es position in the event that it becomes out of s ync with what the com puter think s is the pos ition. Through the bump f eature this re-calibration occurs whenever the proportional device returns to either the close or full open position

Bump Hold

This is the time period that the bump feature is engaged when at the close or full open position.

AutoDetect

When you have multiple iGrow controllers connected together, you can set how often the Master controller checks the network to s ee if another contro ller has been added, or if one is l ost. Your choice is either ever y 5 min. or on reset.

Reset Error

This feature is used for testing & troubleshooting. If you are having comm unication problems, turning this to Show will display error messages I the status screens.

Temp Delta

This is a indoor temperature sensor filter to reject erroneous sensor readings. If a temperature reading spikes, say it is 5 ºF above or below the previous reading, then it will be rejected. The number of degrees is programmable. See also Temp Delay below.

Temp Delay

If several samples in a row fall outside the above Temp Delta and the time exceeds this Temp Delay, then what was rejected is instead accepted.

BHeat Delay

The length of time entered here applies to the bottom heat temperature in the same way as the indoor temp sensor applies above.

Loud Vent

This applies to a system with Variable Frequency Drive (VFD) fans and vents. When the Loud Vent option is enabled, there will be no zone temperature/stage change updates while the

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SmartCool Number 1

Press <ENTER> to

SmartCool Factors

Ku Gmax Kd Gmin 20 20 1 5

Smart Cool uses the outside temperature and light data to ass is t in making intelligent cool staging decisi ons f or the most efficient control of your greenhouse. In the first level of screens, there is a similarly named panel called Smart Cool Settings. SmartCool Factors and Smart Cool S ettings panels are related to each other. In the Smart Cool Settings pane l there are 10 possible settings you can c hoose from, each one determining how aggressively your iGrow will respond to changing weather conditions. SmartCool Factors are the detailed settings for each of the 1-10 Smart Cool Settings.

Note: Smart Cool Factors are settings related to how quick ly your greenhouse heats up and cools down. T he

iGrow 1800 allows you to adjust the Sm art Cool Fac tors, but it is NOT RECOMMENDED TO CHANGE THE DEFAULT SETT INGS. To use Smart Cool, you should only adjust the 1-10 values found in the Smart Cool Settings panel. For further information on Smart Cool, please contact Link4.

Clear History

clear History Log. Press any other key to exit.

The Clear History option is made available to erase any previous history log that is undesirable. Press Enter to clear history log and then press the Back key to save and exit.

Resetting the Controller

Hard Reset- If your controller ever freezes, use a long p in to press the res et button (though the sm all hole on

the front panel labeled Reset). This will refresh the controller. This is a safe operation and will not cause you to lose any programming or configurations.

Factory Default Reset- if ever wanted, or is necessary, you can reset the iGrow 1800 settings. To do this, unplug or press the reset button, t hen immediately press and hold the “Back ” and “Enter” buttons simultaneously whi le the unit restarts. After doing so, the contr oller will say “iGrow 1800 Restoring Default Configurations…… …” It is suggested that if you have the iGrow Remote Management Utility (RMU) software, use it to save your configurations before making a factory default reset. Then, you can use it to quickly restore all your settings.

Warning: You will lose all configuration data if a Factory Default Reset is performed.

to its factory default

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SystemSetup

Setpoint 1 Enabled

Setpoint/Time Period Programming

Setpoint/TimePeriod

Advanced Setpoints Program Equipment Dehumidify/Humidify Stage Overrides Equipment Overrides Smart Cool Settings Setpoint Alarms Auxiliary Controls Expansion Settings Heat Demand Cool Demand

Start Times

You have up to 8 setpoint start times available to use within a 24 hour time period. You can cycle through each of the eight start times with the + or - keys.

Pressing Enter takes you to the Enabled or Disabled option. Setpoint 1 is alwa ys enabled. Setpo int’s 2-8 are disabled. You may enable them by use of the + key.

Note: If you only have da y and night setpoints, you will onl y use Setpoint 1 and Set point 2, the other two w ill remain disabled

The Start time is when the heat and cool temperature setpoints temperatur es are engaged. The start time is either a fixed time or it can vary dail y based on the increase or decrease in day length. This day lengt h is an

Astronomic Adjustment based on the latitude and longitud e entries that you made as shown in the Setup Location portion of this manual.

By pressing the + key at the Start Time entry, you will get the following: Press + once = SRise Press + twice = SSet

Start 6:00A Ramp30m Temp 68.0 to 72.0ºF RelHum 10 to 80 %

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You would use the Srise op tion for the setpoint that you progr am at the beginning of the da y. Similarly, you

SystemSetup

Influence Factor

would use the Sset option for the end of the day setpoint. T he adjustment will be m ade each m idnight and so everyday you will see a change in the “Start Time”.

Ramp Time

The ramp time enables a sm ooth transition of the target temperatures between the time periods. If the ramp time is set to 0 there will be an immediate step transition in the set points f rom the previous from the current setpoint to the following time period. If the r amp time is not zero, the ramping begins at the end of the time period (see Fig 2.1 for reference).

Heat and Cool Setpoints

The third line is where you enter the heat and the cool s etpoints, that is, the low temper ature and the high temperature targets.

Humidity Setpoints

The humidity range is shown on the fourth line. If the humidity is below the lower value, you enter the humidification stage. If humidity is above the higher number you go into the dehumidification stage.

Advanced Setpoints

Heat/Cool Setpoint Influence Factors

The influence factor is a feature designed to enable a sensor, typically outdoor temperature or light, to automatically do an adjustment of the cool temperature or heat temperature setpoint. For example, if the outdoor temperature falls below x ºF, you may want to boost the heat temp setpoint by y degrees.

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Setpoint/TimePeriod

Setpoints Advanced

Program Equipment Dehumidify/Humidify Stage Overrides Equipment Overrides Smart Cool Settings Setpoint Alarms Auxiliary Controls Expansion Settings Heat Demand Cool Demand

Drive to Average

Factor Type: Heat

Offset 1:

Offset 2:

Influence Factor

Status: Disabled Condition Sensor: OutTemp

Factor Type: Select Heat or Cool Setpoints that are to be influenced Status: Either Enable the influence or Disable it Condition Sensor: Select which sensor that you want to drive the influence

0.0 ºF

Condition 1:

-0.0 ºF

Offset 1 is the setpoint adjustment if the influence sensor reading is greater than the Condition 1 Offset 2 is the setpoint adjustment if the influence sensor reading is less that Condition 2.

Temperature Drive to Average Control

Drive to Average will adjust the night setpoints so as to maintain an overall daily average target

temperature.

Selecting Drive to Average brings you to the following screen

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0.0 ºF

Condition 2:

-0.0 ºF

Drive to Average

Disabled

Allowable Target

System Setup

Target Temp: 70.0ºF Max Fail Days: 3

The Drive to Average option can be either Enabled or Disabled. Enabling it engages the option. The Target Temp is the average temperature you are trying to achieve. The Max Fail Days is the number of successive days that the target temperature cannot be achieve d

after which adjustments are made automatically to the day setpoints.

Deviation: 1.0 ºF

Max Adjustment Size:

5.0 ºF

The Allowable Target Deviation is the number of degrees that the average temperature is allowed to vary from the setpoint before a fail day is signified.

The Max Adjustment Size is the maximum number of degrees by which a setpoint adjustment can be made.

Programming Equipment

This is where you program each piece of equipment connected to the var ious outp uts (channels) of your controller.

After you press the Enter/Menu button you will get the following screen, if this is the first time programming this channel.

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Setpoint/TimePeriod Advanced Setpoints

Program Equipment

Dehumidify/Humidify Stage Overrides Equipment Overrides Smart Cool Settings Setpoint Alarms Auxiliary Controls Expansion Settings Heat Demand Cool Demand

01 Name1 None

Press the Enter/Menu button a second time and you will see the following screen:

This time channel 01 is high li ghted. U se the + and – buttons to cycle through all th e channels on the controller or to find the channel that you want to program or edit.

Once the channel is selected, the next t wo steps are to name the channel (usually nam ed by the equipment type it’s controlling), and to set what kind of equipment it is.

For un-programmed equipment, there are two editable choices: the name field and the equipment type field. Press the Next or Enter buttons to nam e the channel. Press the + key and the alp hanumeric character list is displayed. Use the + or – keys to select your character and press Next to go to the next one. W hen finished press the Back key. The names are restricted to 5 alphanumeric characters.

Press the Next k ey to select the equipment t ype to be assigned to the channel. Again use the + or – ke ys t o cycle through the equipment type field that has the following equipment types:

On/Off – On/Off may be programmed on any channel Irrig – Irrig may be programmed on any channel CO2 – CO2 may be programmed on any channel Light – Light may be programmed on any channel MZone – MZone (or Microzone) is an O n/Off type device with its own s etpoints and tem p sensor ( temp pr obe

only). It is an independen t thermostat output with Day/Night settings. It can be programmed on any Channel.

Pump - Pump may be programmed on any channel. G PID- This Generic PID controller may be programmed on any output. Vent – Vent may only be programmed on any two consecutiv e channels, the first channel being an odd

number and the second it’s neighboring even number (for example: channels 1&2 or 3&4 are acceptable pairs, but 2&3, or 8&9 are not)

Curtain – Curtain may only be programmed on any two consecutive chann els, the first channel being an odd

number and the second it’s neighboring even number (for example: channels 1&2 or 3&4 are acceptable pairs, but 2&3, or 8&9 are not)

MixV – MixV may only be programmed on any two consecuti ve channels, the first channel being an odd

number and the second it’s neighboring even number (for example: channels 1&2 or 3&4 are acceptable pairs, but 2&3, or 8&9 are not)

PZone – PZone (In some versions this is referred to as PZONE) is a special purpose Mixvalve, and is a

proportional controlled Micro Zone. It may only be programmed on any two consec utive channels, the first channel being an odd number and the second it’s neighboring even number (for ex ample: channels 1&2 or 3&4 are acceptable p airs, but 2&3, or 8&9 ar e not) It is an independ ent thermos tat output that can control modulating heat valves.

VOut – VOut is a variab le voltag e or c urr ent output f or equipments such as variable speed fans. This option

only appears if you have installed the optional iMOD (Multi-Output Device) expansion board.

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This channel has no selected equipment.

02 ExFan OnOff

Editing Note: If you have already programmed a channel and wish to change either the name or the

equipment type you can do so as follows:

press Prev again to edit the equipment name.

Go to the Program Equipment screen, press Enter to highlight a channel. Press + or – keys to select the channel that you want to edit. Then press the Prev button to edit the equipment type and

Now we will go through and show you how to program each of the equipment types listed above.

ON/OFF Equipment

Heat Cool 654321 N 123456 000000 0 011111

The iGrow 1600/1800™ supports On/Off devices with up to 6 heating and 6 cooling stages. 1 to turn equipment ON and 0 to turn it OFF. Use the + or – keys to toggle the On/Off condition for a particular stage.

In the above example, we have the exhaust fan coming on beginning with the second stage of cooling and then continuing on in the remaining six cooling stages.

Note: If in the Cooling/Heating Stage s etup you selec ted f ewer than 6 stag es, then o nly the num ber of s tages

that you selected will appear for the On/Off devices and Vents (Refer to Cool/Heating Stages Setup to set how many stages are desirable).

This second screen can be programmed for various applications which we will discuss below.

No Pump

AC Override Disabled

For now we will leave the default, No Pump and leave the Active Cooling (AC) Override Disabled.

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02 ExFan OnOff

Cycle Disable

02 ExFan OnOff

01 Valve1 Irr

Cycle On 00 :00:00 Cycle Off 00 :00:00

This third screen provides you with the option of cycling on and off the On/Off output (in this exam ple, an Exhaust Fan). The cycling, if enabled, only occurs when the tem perature stage c alls for the equipm ent to turn on. For example, in the first sc reen s hown above, t his would o nly occur in cooling stages 2-6. The cycle tim es are in hours, minutes and seconds.

Now if we go back to the 2 below,

screen above and Enable the Active Coo ling (AC) Override function, as shown

No Pump

AC Override Enabled

A fourth screen is opened up as follows:

AC Heat Cool OVR- 654321 N 123456 Ride 000000 0 000000

This is an override screen which is conditioned on the AC override being active. Suppose you have two systems for cooling in the same greenhouse compartment. One system with vents and

fans, another with chilled water. W hen the chilled water cooling com es on, you will want the house sealed up and the exhaust fans to turn off. This override screen, gives you that flexibility for the fans. A similar screen will be shown below in the vent programming section.

Irrigation Programming

Mode: Scheduled Hr mm ss OnTime: 00:00:00

Each channel programmed for Irr (irrigation) can be programmed independently. The first selection is the Mode. Pressing the + or – keys cycles you throug h the mode choices. There are six choices defined as follows:

Scheduled This mode is like a time clock where you set the start time, run time and days of the week.

Accumulated Light

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In this mode the irrigation cycle is triggered when the ac cumulated light or “light sum” reaches a threshold or

01 Irr01 Irr

when the off time limit is reached.

Cycle

With this option, the irr igation valve is c ycled continuousl y during the tim e window with an On time and an Off time that you get to select.

Trigger

This option lets you trigger the irrigation based on an external input. This input could be a wall switch, a moisture sensor, a weighing scale or any on/off input.

Soil Trigger

This option is based on a soil moisture sensor as a trigger. The soil moisture threshold is set and when triggered, the irrigation valve turns on for the user programmable time.

VPD (Vapor Pressure Deficit)

In this mode you define the VPD threshold at which the irrigation valve is turned on for the user programmable time.

Scheduled Irrigation

Mode: Scheduled hr mm ss OnTime: 00:00:00

7:00A 8:00A 12:30P 4:00P Off Off Scheduled Irr Times

SMTWTFS SMTWTFS 1010101 0101010

Scheduled Days

Scheduled mode allows the iGrow 1800™ to turn the Irrigation channel on for a duration equal to OnTime at up to six start times per day. Use Off to indicate unused time slot. The third screen allows for enabling or disabling scheduled irrigation for an e ntire day. A “1” indicates t hat irrigat ion is enable d for that partic ular da y, and a “0” means irrigation is disabled f or that da y. Two week s are given, so that t he iGrow 1800™ c an be conf igured to irrigate every other day.

In the above example, the equipment, named Irr01, is scheduled to turn on for 2 minutes, every other day of the week, at 7a.m., 8a.m., 12:30p.m., and 4p.m.

Note: These times are not astronomically adjusted.

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02 Irr02 Irr

End at 07:30P

02 Irr02 Irr

S1 = 6.0 kW/m2 at 85°F

S2 = 3.5 kW/m2 at 55°F

The crosshairs represent the irrigation trigger point.

Accumulated Light Irrigation

Mode: Accum Light hr mm ss OnTime: 00:00:00

Accumulated light m ode allows the iGrow 1600/1800™ to turn the Irrigation channel on for a duration equal to the OnTime.

Start _SRise 07:00A

Accum Light

The irrigation valve will only turn on between the Start time and End time and will only do so when the appropriate amount of light has been accum ulated. Both of the start and end times can be astronomically adjusted to vary with respect to either s unrise or sunset. Please n ote that if the accum ulation does not reach the threshold at the end of the tim e window the accumulation will stil l continue, however, if the threshold is reached outside the time window, irrigation will not take place until the beginning of the next active time window.

In the third screen you will need to set the accumulated light thres hold. You have the option of setting it as a function of the air tem per ature. For exam ple, you m ight have a thres hold of 6000 w/m 2-hr at a tem per ature of 70 ºF and a threshold of 5550 w/m2-hr at an air temperature of 80 ºF. The t hres hold will then be a s tr aig ht line interpolation between the two temperature thresholds. Note: If you don’t want it set as a function of temperature, then simply make the two accumulated light entries the same.

This location will change as the actual temperature

changes

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6000 W/m2h at 55°F 3500 W/m2h at 85°F Max Off 8:00 hh:mm

03 Irr03 Irr

The last entry is the Max off time. This is similar to a safety net. In the event that the accumulated light is below the threshold when the max im um off time is r eached, irr igation will tak e place a nywa y and the acc um ulator will be reset.

Note: In order to use this feature properly, there has to be a light sens or attached to the iGrow 1600/1800™

and it must be mapped correctly in the Setup Input screen.

Cycling Irrigation

Mode: Cycle hr mm ss OnTime: 00:00:00

When you select this option you will get the following screen: The cycling option is for turning on and off a valve at some repetition rate during a tim e window. As with the other options, your first entry is the OnTim e for the valve.

On Time Off Time

Cycle Time

In the second screen above you will set the time window with Start and End times. The start and end times can be fixed or they can be relat ed to Sunrise or Sunset. You can cycle through the three options by pressing the + key when the cursor is over the at.

The Cycle Time is the combination of the On time and the Off time added together.

Trigger Irrigation

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Start __at__ 09:00A End at 07:00P Cycle 00:00 hh:mm

04 Irr04 Irr

Mode: Trigger

04 Irr04 Irr

End at 07:00P

04 Irr04 Irr

End at 07:00P

hr mm ss OnTime: 00:00:00

The external trigger option i s designed to turn on your irrigation valve(s) from an ex ternal switch such as a momentary wall switch or a lysimeter. The external trigger input should already be assigned in the Setup Inputs screens. See Setup Inputs Section for more details.

Note: The iGrow 1600/1800™ digital input has an internal 10K pu ll up resistor to +3.3V. If t he external trigger

input is pulled low by an external device for more than 50 msec then the input is deemed valid.

Start __at__ 09:00A

Trigger

The iGrow 1800™ enables the external trigger onl y between the Start and End tim es. These two tim e values can be astronomically adjusted with respect to either sunrise or sunset.

Soil Trigger Irrigation

The Soil Trigger irrigation option is designed to turn on your irrigation valve(s) from an input threshold being reached. An example of such a device is a “soil moisture” sensor.

Mode: Soil Trig hr mm ss OnTime: 00:00:00

The first screen is where you set the valve OnTime once the threshold is triggered.

Start __at__ 09:00A

Soil Trig

This second screen is where you set the tim e windo w during wh ich you will allo w the ir rigat io n valve to be triggered. If the threshold is reached outside this time window, the irrigation will be triggered at the start of the time window. Both the start and stop times can be fixed times by selecting the at option or they can be based on Sunrise and Sunset.

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04 Irr04 Irr

Input Soil5

04 Irr04 Irr

End at 07:00P

04 Irr04 Irr

Threshold 0.0% VWC OffTime 00:00 hh:mm

The third and final screen is where you select the trigger sensor and the threshold for turning on the irrigation valve. The threshold is a Volumetric Water Volume (VWC) percentage. It corresponds to an input of 0 to x Volts DC. The OffTime is the maximum off time that you will permit. If the threshold is not reached by the end of this time, the irrigation valve will be turned on as though the threshold was reached. This is a backup position in case the sensor is not operating correctly or was inadvertently removed.

Vapor Pressure Deficit (VPD) Irrigation

Vapor pressure deficit (VPD) is the difference (referred to as deficit) between the amount of moisture in the air and how much moisture the air can hold when it is saturated. Therefore,

VPD = VP(SAT) – VP(Air)

The iGrow 1600/1800 calculates the VPD based on the temperature and humidity sensors in the greenhouse.

Mode: VPD hr mm ss OnTime: 00:00:00

The first screen is where you set the valve OnTime once the VPD threshold is reached.

Start __at__ 09:00A

VPD

This second screen is where you set the tim e windo w during wh ich you will allo w the ir rigat io n valve to be triggered. If the VPD threshold is reached outside this time window, the irrigation will be triggered at the start of the time window. Both the start and stop times can be fixed times by selecting the at option or they can be based on Sunrise and Sunset.

Threshold

0.00 inHG-Hr

Max Off 00:00 hh:mm

The third and final screen is where you select the VPD threshold for turning on the irrigation valve. The threshold is an accumulated pressure measurement input as in HG-Hr .

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05 CO2 CO2

The OffTime is the maximum off time that you will permit. If the accumulated VPD threshold is not reached by the end of this time, the irrigation valve wil l be turned on as though the thr es hold w as reached. This is a backup position in case the sensor is not operating correctly or was inadvertently removed.

CO2 Equipment

Start __at__ 09:00A End at 07:00P

The iGrow 1800™ can also be used to r egulate the amount of CO pumps or injectors. This mode is active between the Start and End times. You have the option of controllin g the Start and End times based on a fixed time window or a relative time window. The latt er is relative to the sunrise and sunset times. When the cursor is over the at position and you press the + or – keys, you will cycle through the three options: SRise, SnSet, and at. When you set the parameters up for the first time as shown in the above screen, the Start and End times will be adjusted every day thereafter, at 2 AM, to track the shortening and lengthening of the days.

Note: It does not mean that the Start is exactl y at the sunrise tim e, or the End at exactly at the sunset t imes.

You can select any time windo w. What it means is that the daily adjustment is per the change in the sunrise and sunset time amounts. W hen the days get longer, the sunrise rise tim e will be earlier each day and the sunset time will be later.

inside the gree nhouse by controlling CO2

Min CO2 0 ppm Max CO2 0 <=HEAT6 Min OLight 0 W/m2

Within the active time period, the iGrow 1800™ will inject CO level.

The iGrow 1600/1800™ wil l also inj ect CO

to the M ax CO2 Level, within the active tim e period, if both of the

following conditions are met:

1. The current cooling/heating stage is less than or equal to the indicated stage, where H6<H5…<N<C1<….C6. T his means that the iGrow 1600/1800™ will not inject CO Level for cooling stages above the indicated stage. This can be used to prevent excessive loss of CO to high fans and opened vents.

AND

2. The current light level must be above the programmed Min Outdoor Light threshold.

Note: This mode requires the installation of the optional CO2 sensor and CO2 pump. If there is no light sensor

present, the iGrow 1600/1800™ will inject the CO2 to the M ax CO2 Level as suming the condition (1) above is satisfied.

to the Min CO2 Level, which is the minimum CO

up to the Max CO2

due

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Light Equipment

06 HID Light

06 HID Light Turn ON < 500 W/m2 Turn OFF > 600 W/m2

The iGrow 1600/1800™ can be used to control lights (typically HID) in the greenhouse. There are four operational modes that you can program. These are:

• Supplemental

• Scheduled

• Cyclic

• Daily Light Integral (DLI)

Select Operational Mode: Supplemental

You can press the enter key and highlight the Mode: With the plus key you can toggle between the four options.

Supplemental Light control

Start at 09:00A End at 07:00P Use OLightSensor No

Supplemental mode is active between the Start and End times. You have the option of controlling the Start and End times based on a fixed time window or a re lative time window. The latter is r elative to the sunrise and sunset times. W hen the c urs or is over th e at position and you pr ess the + or – keys, you will cycle through th e three options: SRise, SnSet, and at. When you set the parameters up for the first time as shown in the above screen, the Start and End times will be adjusted every day thereafter, at 2 AM, to track the shortening and lengthening of the days.

Note: When you select SRise or SnSet, It does not mean that the Start is exactly at the sunrise time, or the End

at exactly at the sunset times. You can select any time window. What it means is that the daily adjustment is per the change in the sunrise an d sunset time amounts. When the days get longer , the sunrise rise time will be earlier each day and the sunset time will be later.

If you do not have an outdoor light sensor, then the output functions as a time clock with the optional astronomical adjustment.

If you do have an outdoor light sensor, you can program the following screen:

First you will program the light level below which the lights will be turned ON. Then you will program the level at which they will be turned off. The final parameter is the Time Delay. If the sun were to appear momentarily, you

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Time Delay 20 Min

probably don’t want the li ghts go of f and then on ag ain. T o avoid this potenti al cycling pr oblem , you can set a

06 HID Light

Time Delay in minutes where the l ight level m ust be above the turn off threshold continuous ly befor e the lights will be turned OFF.

Scheduled Light control

Select Operational Mode: Scheduled

If you select Scheduled mode, the following screens have the following format.

Start at 12:00A End at 12:00A

On this screen you can see that you have up to three time periods per day to program an ON and OFF time for your lights. Just press the Next or Prev keys to navigate to the time entry you want to modify and then use the + or – key to adjust the time. The next screen lets you select the days of the week for enabling your lights. This is on a two week schedule.

SMTWTFS SMTWTFS 0111110 0111110 Scheduled Days

A “0” means the lights won’t come on for that entire day, a “1” means they will. Once you’ve pressed the Enter button, move the cursor with the Next or Prev keys. You toggle between the 0 and the 1 with the + key.

Cyclic Light control

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Select Operational Mode: Cyclic

06 HID Light

Start at 12:00A

06 HID Light

End at 12:00A On Time 00:20 hh:mm

For the Cyclic light option, this is where you set the tim e window , that is, the Start and End times during which the lights can c ome on this par ticular light bank – channel 6. You also set the On Tim e, which is the length of time the light bank is to come on during its cycle within the time window.

The overall cyclic light ing par ameters are set back where you beg an t he pr o gramming. From the Main sc reen, after you press Enter/Menu, you will select the System Setup option. The fifth option on the lis t is Cyclic

Lighting.

Daily Light Integral (DLI) control

The purpose of this option is to use artificial light, if necessary, to achieve a daily amount of accumulated light in the greenhouse zone.

Select Operational Mode: DLI

Light Sensor InLight Threshold:

11.0 kW/m2-Hr

In this second screen you will select the light sensor whi ch you will use to control th e amount of accumulated light. Ideally this would be a light sensor located near the plant level. The second entry is the accumulated light threshold which is your light target for the day.

Day Start 12:00A Turn On Time 3:00P Day End 7:00P

In the third screen you will set the day start time when you light accumulator is to begin. Previously, it was reset to 0. If your threshold is not reached b y the Turn On Time (shown as 3 PM in the s creen), then the light will turn on and remain on until either the Light Threshold is reached or the Day End time is reached.

MZone (Micro-Zone) for ON/OFF E quipment

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The iGrow 1800™ can be used to monitor and contro l up to five (5) independent heati ng or cooling “Micro-

07 BHeat MZone

Zones”. What is a Micro-Zone? A Micro-Zone is a region or compartment within a greenhouse that has a different temperature setpoi nt. T ypical uses for Micro-Zones would be bench heati ng, corridor hea ting, or any other area in the greenhouse with separ ate heating or cooling eq uipment. Any of the iGrow 1800’s 12 outputs can be programmed as an M-Zone. An MZone output is basically an independent t hermostat with both a da y and night setting.

Note: MZones only control On/Off type equipments. For control of proportional type see Pzone.

The first option for MZones is setting it to control either a heating device or a cooling one. The next setting is telling the iGrow1800™ which temperature probe to use. The iGrow 1800™ has five temperature probe sensor inputs, so it’s important to set the iGrow1600/1800™ to read the correct one for the MZone.

Mode Heat Sensor Temp1

Day 72.0°F Enabled Start at 6:00A Lockout >= Cool1

Two target temperatures can be set, one for Day and the other Nite. Either can be Enabled or Disabled. The Day temperature target begins with the Start time. The start can be astr onomically adjusted by pressing the + key when the cursor is positioned over at.

Nite 65.0°F Enabled Start at 8:00P Lockout >= Cool1

The iGrow 1800™ will keep the device on so long as the following two conditions are met:

1. The current cooling/heating stage is less than or equal to the indicated stage, where H6<H5…<N<C1<….C6.

2. The temperature is above/below the target temperature plus the deadband.

Note: The Deadband is set under t h e “S ystem Setup” menu and then selecting t he “Setup Deadbands” option.

The BHeat deadband is one used for MZones.

The Nite target is set exactly the same as the da y. If only one temperature setpoint is desired for the 24 hour period, then you can simply select the Disabled option for the second one.

In the example screen above, iGr ow 1800™ output 7 is controlling a Benc h Heater. From 6am to 8pm the heater will turn on if the MZ one temperature goes below 72°F . Additionally, it will s hut off, or Lockout, if the main greenhouse enters Cool1-Cool6. This way you’re not trying to heat and cool your greenhouse at the same time. From 8pm to 6am the setpoint lowers to 65°F and will also Lockout if the greenhouse enters Cool1-Cool6.

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05 Pump2 Pump

Pump Control

The iGrow offers two types of pump control. Supply pumps are used for hot or cold water temperature control systems while peristolic pumps are used for nutrient injection systems.

Select Pump Type: Supply

Choose the type of pump you are controlling, Supply or Peristolic

Supply Pump

When you have a mixvalve type heating system , it is often necess ary for the contro ller to manage the s ystem pump(s). The iGrow 1800™ can control up to 5 P um ps, each one being acti vated when the m ixvalve t ied to it opens beyond the Minimum threshold. To “tie” a pump to a specific mixvalve you must specify, in the mixvalve’s settings, whic h pump you want it to control. For m ore details on this s ee the Programming / Mix Valve section of this manual.

Pump 2 Supply Mixv’s with minimum 5% open

In the example screen above, the pump will turn on when the mixvalve that it’s tied to opens at or above 5%.

Peristolic Pump

When you have a nutrient enjection system, it is often necessary for the controller to manage the system pump(s). The iGrow 1800™ can control up to 5 Pumps, eac h one being activated when the corresponding sensor passes the threshold you define below.

Probe: 500uS ECT1 ON to: Decrease uS

Probe

Depending on what type of probe you have connected and configured (pH or EC), you can select which one the pump will be controlled by.

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05 Pump2 Pump

Note: Configuration of the probe (pH or EC) is done in Input Settings, and this should be done before

programming a Peristolic Pump.

ON to

This pump can be used to either increase nutrient or decrease nutrient per a setpoint you define.

Setpoint 0.0uS Deadband 0.0uS

Setpoint

Setpoint is the ideal value that you want to keep your nutrient at.

Deadband

When the nutrient level f alls off the s etpoin t the pump will be activated. The deadband forces the pump to st a y on for a while past the setpoint. The purpos e of deadbands are to keep the pum p from constantly turning the pump on and off again to maintain the setpoint.

If Light > 0W/m2 Drive to 0.0 uS

If Light - t hen Drive to

In order to optimi ze your growing conditions, the iGro w1600/1800 offers a light ov erride. If a high light level occurs you can temporarily modify your nutrient setpoint.

If Temp1 > 0.0 F Drive to 0.0 uS

If Temp - then D rive to

Similar to the Light override, you can also override the nutrient setpoint if the greenhouse temperature goes above the threshold you set.

ON/OFF TIME

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ON TIME 0sec OFF TIME 5sec

When the pump is activated to maintain the desired set point it will pulse on and off. It pulses in order to not

07/08 Top V Vent

overshoot the setpoint.

Vent (Proportional) Pr ogramming

Note: This equipment type requires 2 consecutive output channels 1&2, 3&4, etc. The first channel (odd

numbered) must be wired to OPEN the vent, and the other (even numbered) to CLOSE it.

N C1 C2 C3 C4 C5 C6 10 20 40 80 40 0 0 Open Time 01m 35s

The vent opening is defined in perc entage terms where 0% is vent closed and 99% is where the vent is fully open. NORM is the norm al s tage when ne ither heat ing nor cooling is usual ly require d. C1 is the lo west s tage of cooling, and C6 is t he hig hest (or m aximum) cooling s tage. Enter your desir ed vent opening percentage for each of the stages.

The Open Time is the time in minutes and seconds that it takes for the vent to go from its full closed to full open position or vice versa.

Note: to determine the vent open tim e turn manual toggle switch on, and usi ng a clock or stopwatch, time the

vent as it goes from it’s closed to open position.

Dir N Min Max WindWd 15 30mph LeeWd 15 40mph

Wind Overrides

Wind overrides limits are im portant f or s afe and eff ec tive vent operat ion. O f cours e, a weather stat ion ( or Link4 anemometer) must already be install ed to use this f eature. Fir st you have to set Dir, whic h is the direction th at the vent faces when open. You have eight choices. N, NE, E, SE, S, SW, W, NW. Next, you will need to set a Min and Max vent opening for the case with the wind blowing into the vent (Windward) and similarly for the case where the wind is blowing across or over the vent (Leeward). The program calculates an aver age wind speed. T his is a running aver age over approxi mately 5 seconds. O nce the average wind speed exceeds the Min value the vent begins to close. As th e wind speed increases and approaches the Max value, the vent will go to the full close position.

The third vent screen is shown below.

Wind Ovr Hold 2m If Rain MaxOpen 5%

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The Wind Ovr Hold par ameter is the length of time in m inutes that t he vent will remain in its overrid e position

07/08 Top V Vent

once the wind speed is below the m inimum thres hold. This is to k eep shor t wind gus ts from causing the vents to constantly open & close. The Rain MaxOpen percent is the maximum vent position once rain is detected. EXAMPLE: The wind override has higher priority than r ain. Suppose the vent is open 5 0% and i t begins to rai n. From the entry in the above screen, t h e ve nt will cl ose down to 5%. Now assum e that t he wind pick s up and exc eeds 30 mph with the wind blowing into the vent. The vent will then go to a full close.

The f ourth screen below is for insuring that the vent do es not open beyond a preset perc entage if the outside temperature is below a user defined threshold.

Low Temperature Override

LOW OTEMP OVERRIDE Vent MaxOpen 0% If Otemp < 40 ºF

The Vent MaxO pen is the max that the vent will go ope n if the Otemp is less than t he n umber of degrees that you enter. In any case, wind and rain overrides will have precedence.

In the fifth and final screen, the vent can be programmed to go to a minimum opening if the outdoor temperature exceeds a plus or minus value relative to the c ool temperature setpoint. This override is anticipator y and is particularly useful for the ope n roof vent conf iguration or t he side r oll u p vents. It is also us eful, if one wants t o minimize the vent movements, b y just leaving the vent in a fixed position as long as the outside tem perature exceeds some offset from the cool setpoint temperature.

Vent Min Open 99% If Outside Temp > Cool Setp - 3 ºF

The Vent Min Open is the minimum position for the vent when the Otemp exceeds the CoolSetP plus an offset temperature. This feature helps improve eff iciency by using outside air to cool the greenhouse rather

than fans or Pads. As with the previous screen, wind and rain overrides will have precedence.

EXAMPLE:

Suppose you have an open roof vent and you want to it go to its maximum position when the outside temperature is 3 degrees below the cool setpoint which during the day is 70 degrees. You will then enter 99 for the Min Open value and –3 for the offset value. Once the outs ide temperat ure exceeds 67 degrees, th e roof vent will, in this example, go to 99% or full open.

Position Sensor Input

PositionSensor Input Position Sensor 1

The iGrow 1800 offers the ability to read true vent position if you’ve wired a vent position sensor to your iGrow1800. This field sets which Position Sensor to look at (that you have defined in your Menu Mapping).

iGrow 1800 Installation Guide Page86 Link4 (714) 524-0004

07/08 Top V Vent

09/10 H1Top Curt

Set Vent Alarm if Error > 05% for 00 m Ignore target > 80%

If the vent position reading is different from where the computer thinks the vent is by more than a certain percentage that you select, then an alarm is triggered assuming that the reading has persisted for the length of time that you also must enter. This is an alarm that is particularly useful if a worker were to leave the vent open from using the manual switches. When the alarm triggers both the high and low alarm relays are turned on and both the high and low temp LED lights are on.

Auto-calibrate Off

The purpose for the Auto-calibrate mode is to establish the open-close run time of the vent between the open and close positions of the position sensors. When the Auto-calibrate option is switched to ON, this mode is engaged and the vent will automatically go through the open-close routine and the runtime between the position sensor positions will be saved in memory.

N C1 C2 C3 C4 C5 C6

00 00 00 00 00 00 00 Active Cool Ovrides

This is an override screen that becomes engaged when the Active Cooling mode is engaged. For example, if the greenhouse has vents and a chilled water cooling system, it will be important that the vents are closed when the chilled water valves are turned on. This screen is where you program the vent position when the Active Cool mode is engaged.

Curtain Programming

Shade Control

Note: This equipm ent type requires 2 consec utive channels 1&2, 3&4, etc. The f irst channel (odd num bered)

must be wired to OPEN the valve, and the other (even numbered) to CLOSE it.

In programming your curtain for shading you wil l fir st set a close and open time. It is during this window of time that you permit or enable the curtain to be controlled for shading purposes.

SHADING Close __at__ 7:00A Open at 6:00P

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You have the option of cont rolling the close and open tim es based on a fixed time window or a rel ative time

09/10 H1Top Curt

window. The latter is relat ive to the sunrise and sunset times. When the cursor is over the at position and you press the + or – keys, you will cycle through the three options: SRise, SnSet, and at.

When you set the param eters up for the firs t time as shown in the ab ove screen, t he close and o pen tim es will be adjusted every day thereafter, at 2 AM, to track the shortening and lengthening of the days.

Note: It does not mean that the C lose is exactly at neither the sunr ise time, nor the Open at exactly at the

sunset times. You can se lect any time window. W hat it means is that the dail y adjustment is per the change in the sunrise and s unset tim e amount s. W hen the da ys get lon ger, the su nrise r ise tim e will be earlier each day and the sunset time will be later.

In the following screen you have more parameters to set. The first is the MaxClose position. This is important if you are dependent on ridge vents for cooling. In th is cas e you m ay not want to c lose the c urtain com pletel y in order to let hot air escape through the overhead vent. In this event, a typical MaxClose might be 90% or 95%.

SHADE MaxClose 99% Close Above 800W/m2 or if OutT > 100ºF

If you have a light sensor, you may want the curtain to shade only when the light exceeds a threshold. Therefore, you have a Close Above light intensity value you can select. Also, if you have an outside temperature sensor, you may want to close the curtain to the MaxClose pos ition, when the OutT exceeds a temperature threshold. If you have neith er of thes e sensors , then your shade contr ol is s olely dependent up on the close and open times that you set in the first screen above.

The next screen is the last one f or shading c ontrol. H ere you set th e light thres hold where the curtain will open after it was closed. Li ght levels can var y suddenly and sometim es only for a few minutes , therefore, you will typically keep this Open Below value in the range of 50 to 100 W/m previous screen.

below the Close Above setting on the

To further reduce the curtain movement, you can set an Open Delay time. This means that the light level must be continuously below the Open below threshold for the selected time in minutes before the curtain will open.

Energy Control

Note: This equipm ent type requires 2 consec utive channels 1&2, 3&4, etc. The f irst channel (odd num bered)

must be wired to OPEN the valve, and the other (even numbered) to CLOSE it.

Curtains are often used as a thermal blank et during the night. W e call this energy co ntrol. On the firs t screen you set the Close and Open time window. As above, you have the option of adjusting the Close and Open times for Sunset and Sunrise.

iGrow 1800 Installation Guide Page88 Link4 (714) 524-0004

SHADE Open Below 700W/m2 Open Delay 20 min

09/10 H1Top Curt

ENERGY CONTROL 1

09/10 H1Top Curt

01/02 Valve1 MixV

Close at 7:00P Open at 8:00A

If you have a light sensor and/or an outside tem perature sensor, you can make the energ y blanket subject to certain conditions as shown in the following screen

ENERGY CONTROL 2 Open Above 200W/m2 OR OutT > 75 ºF

You can set a light threshold and an outside tem perature threshold above which the curtain will not close. Either of these two parameters will keep the curtain open. The final curtain screen has a f ew more options. The first is that you can select a heating or c ooling stage above which the curtain will be c losed to a maximum %. For exam ple, in th e ab ov e cas e, the c ur ta in will c lose to 95%, if the stage is at or above Cool 5.

MaxClose 95% COOL5 ShockProtect 40ºF Close Time 01m 00s

The next is Shock Protection. In the morning when the c urtain is sc heduled to op en and it is c old above the curtain, it may not be desirable to open the curtain all at once. This option lets you select an outside temperature below that the curtain will open in four steps. It will open 5% and then pause for five minutes. It will do this for four times and then open to 0% without stopping. If the system does not have an outdoor temperature sensor, this option is not enabled. The final item is Clo se Ti me. T his is th e tim e in m inutes and seconds it tak es f or the c urtain to go fr om its f ull open position to its f ull close positi on. Just as with the vents, this is an im portant entr y since it estab lishes t he run time for the curtain so that it will go correctly to the close positions that you program.

Mixing Valves

Note: This equipment type requires 2 consecutive channels 1&2, 3&4, 5&6, etc. The first channel (odd

numbered) must be wired to OPEN the valve, and the other (even numbered) to CLOSE it.

Air Temp1 Min 70.0°F Wtr Temp1 Max 90.0°F Open Time 1 m 30 s

Air Temp -

The Temp1 setting tells the iG row1800™ which temp probe is being used to meas ure the hot water suppl y to the greenhouse. Since you can have up to 5 tem p probes connected to your iGro w1600/1800 be sure to set this to the correct one. Use the + or – buttons to select the correct probe.

iGrow 1800 Installation Guide Page89 Link4 (714) 524-0004

01/02 Valve1 MixV

Wtr TempMin

Min is the minimum water temperature of the supply pipe. If the supply water temperature ever goes below this value the mixvalve will adju st increase the supply water temperature. Use the + or – buttons to s elect the correct temperature.

Max

Max is the Maximum temperatur e that the supply water should ever becom e. If the supply water temperatur e ever approaches this value, the mixvalve will adjust low the supply water temperature. This is especially important when PVC pipes are being used. Use the + or – buttons to select the correct temperature.

Open Time

Open Time is the time it takes for the Mixval ve to go f rom f ull y opened to f ully closed. Measure this time with a watch, add a few seconds, and then enter it into Open Time field.

Heating Delay 01 h 15 m 00 s Use Pump 1

Heat Turn On Delay

Heat Turn On Delay is the es tim ated time it takes for the heating system to aff ec t the greenho us e temperature. This is determined by taking a tem perature reading with all heating & cooli ng equipment of f and the mix valve closed, then manually switching the m ix valve open. Measure the time it takes for the ambient temperature within the greenhouse to rise 2 deg.

Use Pump

If you want the iGrow1800 to control a pump associated with the m ixvalve system, this is where you select which pump to control. You must use one Output Channel to control the pump. For more information on how to setup the pump, see the Pump Control section of this manual.

Shock Protect

Setting Shock Protect to Yes forces the Mixvalve to ope n slowly, preventing an inrush of cold water into your boiler system. Shock Pr otect will wor k t wo diff erent ways depending on whether or not you hav e a retur n temp sensor assigned below. Without a Temp sensor the iG row1600/1800™ will still protect your boiler b y adj ustin g how quickly the valve opens based on how long it’s been since the valve was opened last. The longer the time, the slower it will open. If you do assign a tem perature probe, then the iGrow1800™ follows the “if Temp(1) is less than some temp then only open some percentage”.

if Temp(3) < 140°F limit to 5% open

If you have a tem peratur e probe, as s ig ned as T em p1 in t he ex ample above, then the s e ar e the set tings for the return water supply to the Mixval ve. In this example, if the return water temperature is below 105°F then the mixvalve will only open 5% until the return temperature reaches the low tem perature setpoint of the supply water temperature.

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Shock Prot: No if Temp3 < 105.0°F limit to 5% open

01/02 Valve1 MixV

Valve Type Heat

01/02 Valve1 MixV

Passive Stage Yes Tune Range 40.0 F

Valve Type

This field defines the device to be either for Heating or Cooling.

Passive Stage This only applies if the valve is for c ooling. Assuming th at the Valve Type is set to Cool, and if the Passive Stage is set to No, then the cooling valve will be off, when the zone is in the “Passive Stage”., that is, not Active Cool (AC). If the Passive Stage is set to Yes, the cooling valve is always active.

Tune Range

Tune Range is the allowable temperature range that the Mix Valve PID controller can change the water temperature setpoint from the setpoint set by the heat/cool demand.

For PID control of the Mix Valve the t wo follo wing pag es m ust be activat ed. To ac tiv ate these pages go to t he Advanced Settings menu and set MixVal ve Param from Hide to Show. For further information on activating these screens see page 60.

Water Temp P 2.00 I 0.05 D 0.00

Inside Temp P 1.00 I 0.40 Disable No D 0.40

P, I, and D values

These parameters determ ine the reaction times of the valve as related to the difference between the target temperature and the actual temperature. The P value is a pr oportional number. The larger the value for P, the faster the valve will m ove when the temperature differs from the desired value. The downside to increasing P is that it can result in increased overshoot. The I value makes adjustm ents to the valve position to reduc e the temperature overs hooting. The larger the value, the less the temperature will overs hoot the tar get. The downside is that the larger the I value, the slower the reaction time as the temperatur e gets close to its target. Also, never adjust I to be zero as it will generate errors. The D value looks at the rate of change of the difference between the target and the desired temperature.. The higher the number, the m ore the valve will move when t he temperatur e differs from its target. Be very careful when increasing this number.

Disable

Disable stops the zone feedback loop used by the PID control.

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07/08 Valve1 PZone

Note: The iGrow1600/1800’s def ault settings f or PID should be suitable for most an y installation, and theref ore

should not be modified without a good under standing of PID c ontrols. If you feel a change is nec essar y and are not sure how to proceed contact your local distributor, or Link4 directly, for assistance.

Note: You ca n also disable the zone temperature contr ol loop. This is useful if you want to set a fixed water

temperature. Set the Min and Max water temperature to the same number and disable the zone temperature loop.

PZone (Micro-Zone) for Proportional Equipment *

PZone (Proportional Device Micro-Zones) are special purpose mixvalves that control Micro-Zones (changes made). A Micro-Zone is a region or compartment within a greenhouse that has a different temperature setpoint, and is controlled by a hot water mixvalve heating system . In this system the iGrow1600/1800 measures the Micro-Zone air temperature, and the hot water s upply temperature. The iGrow 1600/1800™ can be us ed to monitor and control up to two (2) independent heating PZones.

Note: This equipment type requires 2 consecutive channels 1&2, 3&4, 5&6, etc. The first channel (odd

numbered) must be wired to OPEN the valve, and the other (even numbered) to CLOSE it.

* Note: In some versions PZone may be shown as MZon2

WtrTemp1 Min 45.0°F Max 120.0°F Open Time 00 m 00 s

Settings on the first screen are for the Supply water coming from the MixValve to the Micro-Zone area.

Temp

The Temp1 setting tells the iG row1800™ which temp probe is being used to meas ure the hot water suppl y to the greenhouse. Since you can have up to 5 tem p probes connected to your iGrow1800 be sure to set this to the correct one. Use the + or – buttons to select the correct probe.

Min

Max

Open Time

Open Time is the time it takes for the Mixval ve to go from full y opened to fully close. Measure this tim e with a watch, add a few seconds, and then enter it into Open Time field.

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Heating Delay 00 h 00 m 15 s Use Pump1

The second screen are general settings.

07/08 Valve1 PZone

Heating Delay

Heating Delay is the estimated time it tak es for the heating s ystem to affec t the greenhouse tem per ature. T his is determined by taking a temperature reading with all heating & cooling equipment off and the mix valve closed, then manually switching t he m ix valve open. Measure the tim e it takes for the am bient tem perature within the greenhouse to rise 2 deg.

Use Pump

If you want the iGrow1800 to control a pump associated with the m ixvalve system, this is where you select which pump to use. You m ust us e one Output Channel to control the pump. F or more inf ormation on h ow to setup the pump, see the Pump Control section of this manual.

MicroZone Air Temp: Sensor Temp2 Temp 68.0 to 72.0°F

The third screen is for setting up the Micro-Zone air temp.

Sensor

The Temp(2) setting tells the iGrow1600/1800™ which temp probe is being used to measure the Micro-Zone air temperature. Since you can hav e up t o 5 temp probes connected to your iGr o w1800 be sure to set this to th e correct one. Use + or – to select the correct sensor.

Temp

Temp refers to the setpoint temperatures for the Micro-Zone. Use + or – to set each value.

Shock Prot: No if Temp3 < 105.0°F limit to 5% open

The fourth screen is settings for shock protection in your boiler system.

Shock Protect

if Temp(3) < 140°F limit to 5% open

For PID control of the PZone the two f ollowing pages must be activated. To activate these pages go to th e System Setup screen and then the Advanced Settings menu and set MixValve Param from Hide to Show.

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01/02 Valve1 PZone

Water Temp P 2.00

01/02 Valve1 PZone

07/08 Valve1 PZone

I 0.05 D 0.00

Inside Temp P 1.00 I 0.40 Disable No D 0.40

P, I, and D values

These parameters determ ine the reaction times of the valve as related to the difference bet ween the target temperature and the actual temperature. The P value is a proportional num ber. The larger the value for P, the faster the valve will move when the temperature differs from the desired value. The downside to increasing P is that it can result in increased overshoot. The I value makes adjustm ents to the valve position to reduc e the temperature overs hooting. The larger the value, the less the temperature will overs hoot the tar get. The downside is that the larger the I value, the slower the reaction time as the temperatur e gets close to its target. Also, never adjust I to be zero as it will generate errors. The D value looks at the rate of change of the difference between the target and the desired temperature.. The higher the number, the m ore the valve will move whe n the temperatur e differs from its target. Be very careful when increasing this number.

Note: The iGrow1600/1800’s def ault settings f or PID should be suitable for most an y installation, and theref ore should not be modified without a good understanding of PID controls. If you feel a change is necessary and are not sure how to proceed contact your local distributor, or Link4 directly, for assistance.

Valve Type

This field defines the device to be either for Heating or Cooling

Tune Range

Tune Range is the allowable temperature range that the Mix Valve PID controller can change the water temperature setpoint from the setpoint set by the heat/cool demand.

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Valve Type Heat Passive Stage NO Tune Range 40.0 F

09/10 G PID

09 G PID

Generic PID Controller (G PID)

The iGrow 1800 supports two types of Generic PID controllers: Timed and Pulsed. The timed version requires two output channels and the first channel must be on an odd numbered output. The pulsed version requires only one output and can be set on any channel.

Type Timed Move Time 00 m 00 s

P 1.50 I 1.50 D 0.00 Sensor: Generic1 Setpt 0.1000 in Hg

Override Sn Disabled

Delay 01 h 00 m 00 s No Pump

Type Pulse Period 00 m 00 s

VOut Variable Voltage/Current Output

VOut devices will only appear as an equipment type if you have purchased the optional iMOD expansion module

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Note: If you have installed the iMOD ex pansion m odule but don’t see VOut as an equipm ent option, you m ust

15 VFan1 VOut

Enable “Expansion Settings” before it will appear as available equipment. You will have to go back to the first programming screen and scroll down to the Expansion Settings option.

Variable Current Outputs For outputs that you have configured in Expansion Settings as Variable Current devices, the following screens appear.

Current varies with Ht Dem

Ht Dem

This field determines whether the equipment connected to this output is for heating or cooling. Ht Dem is for heating and Cl Dem is for cooling.

Ht Dem mAmps Max 0 20.00 Min 0 20.00

Max Max is the heat demand percentage that you want the maximum output level to occur at. The value to the right of Max sets the current output that occurs at the max percentage.

Min Min is the heat demand percentage that you want the minimum output level to occur at. The value to the right of Min sets the current output that occurs at the min percentage.

Offset Cal 0.00 Gain Cal 1.00

Offset Cal

Gain Cal

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Link4 iGrow 1800 Installation And User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual