MIGRO-ARAY

Instruction manual and datasheet

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STOP – Please read all these instructions carefully especially the safety section before unboxing and assembling

Safety

Please read this manual thoroughly before assembling and installing the MIGRO grow lights system

Please retain this manual for reference for the lifetime for the product

The MIGRO system limits the voltage in the grow room to 96Vdc and has built in protection for overcurrent, shorts or overheating. However, to minimise any remaining risk please switch the power off while installing and adjusting the MIGRO system. If the mains plug needs to be changed to suit your power socket only a qualified person should carry out this work, in accordance with your local codes.

The MIGRO system will operate on a supply voltage ranging from 100V to 277V AC and from 50 to 60Hz frequency. Any other supply voltage will damage the lighting system.

The grow light and the cabling from the LED driver to the grow light is IP66 rated and can be used in a wet area. The mains power plug is not IP rated for a wet area and should be located in a dry area outside of the grow room. If the cable insulation or glands are damaged switch off the system immediately and return to us for repair.

The MIGRO grow light has a highly efficient and passive cooling heatsink. In order to function correctly air must be able to flow freely across the fins of the heatsink. Do not cover the grow light and restrict the airflow across the heatsink under any circumstances. This will result in heat build up which may damage the grow light and/or cause a fire.

Do not put the grow light down on any surface when the light is on. The light intensity and radiated heat may damage the surface.

The light intensity from each MIGRO grow light is very high. If you look directly at the light source from less than 20cm or 9” away the intensity is equivalent to the sun. To protect your eyes do not look directly at the light source when less than 60cm or 2 feet away.

Setup instructions

Connect the LED bars together with the connector brackets provided. Centre the bracket along the length of the LED bar (line it up with the Cable gland)

Attach the cable grip to each power cable just above the cable splitter. One the cable grip is attached to the cable then attach the ratchet hanger to the cable grip

Setup instructions - Cable grip

Hang the light in the tent from the horizontal bars on the top of the tent. Connect the output cable from the LED driver to the LED bar cable and power on.

The ARAY 120W will rotate in the grow area on its single hanger

It’s ok : )

Setup instructions 4

The light spread is even at any angle of rotation

Dimmer adjustment

Adjust the Light intensity using the dimmer control on the LED driver

From seedling:

For Seedlings start at a 1/5 turn of the dimmer from off position (about 30W output) – keep at this level for the first 2 to 3 weeks until two or three sets of true leaves have developed.

Adjust upwards at 1/5 turn every few days up to 100% for flowering

Plants over three weeks old:

Hang at 16cm or 6″ over the top of the plant canopy. Set the dimmer to 100%

After initial setup check them after a few hours. Look for signs of plant stress; curled leave tips, yellowing leaf tips etc. If you see these signs reduce dimmer by 1/5 turn and monitor.

Optimum hanging height

ARAY hanging height

How much light plants need for maximum yield

To optimise your grow it is recommended that your plants receive 500-1,000 μmols of PAR light for every m² (PPFD). Less than this and growth rates and yield will be low.

Optimum hanging height

Growth rates at higher PPFD levels do not justify the extra energy cost and heat output and the plants require additional CO₂ to utilise the high PAR intensity

Light Intensity PAR charts

Light Spectrum

ARAY 120W Full Spectrum PAR chart

ARAY 120W +RED PAR chart

ARAY 240W 4 bar PAR chart +RED spectrum

ARAY 240W 4 bar PAR chart Full spectrum

Hardware overview

LED bar

The small LEDs (surface mounted diodes, SMDs) are delicate and can be easily damaged.
Take care putting them down and during assembly. They are protected from water and dust with a conformal coating so they can be wiped clean of dust and dirt.

LED driver

The LED driver is highly efficient and reliable constant current transformer and has inbuilt protection from:

Output over voltage
Over temperature
Short circuits

In the event of any of the above the driver will shut down. The driver will automatically restart if the conditions return to normal.

The driver and the mains plug connection should be located outside of the grow area in a dry and safe position with adequate ventilation. The life of the LED driver is related to its operating temperature. Keeping it as cool as possible will extend its life.

The driver is dimmer controlled and has an inbuilt dial for adjusting the output from 10% to 100%.

Airflow and ventilation

Whatever position the grow light is fixed always ensure there is adequate room for airflow around the heatsink to prevent heat buildup. There should be at least 5cm or 2” clearance on three sides of the heatsink.
The heatsink is a ‘fast flow’ passive heatsink allowing air to move quickly over the heatsink surface and remove the heat at a high rate.

Driver and Lamp operating temperature

Both the led bar heatsink and led driver both operate at about 25 deg. C or 45 F above ambient temperature. So at 25 degrees C or 77 F room temp the driver and heatsink will be about 50 deg. C or 122 F. This is perfectly normal and safe.

To minimise the temperature locate the driver down low at the air intake and have the out take moving air across the heatsink.

If the driver case temperature gets to 90 DegC or 195 F the output current will be reduced. If the temperature does not reduce then it powers off until temperatures have reduced.

General specifications

The MIGRO ARAY 120W module is a II bar LED grow light with a single driver and a 3.5M long cable.

Flowering coverage: up to 60cm x 60cm (2ft x 2ft)
Vegging coverage: up to 90cm x 90cm (3ft x 3ft)
Hanging height: 16cm / 6″
Light dimensions: 38cm x 46cm / 15″ x 18″
Power consumed: 113 watts
Voltage/Current: 110V – 1.0 Amp, 220V – 0.5 Amp
Total PPF: 310 – 320 μmols/sec (est.)
Efficiency PPF/Watt: 2.7 – 2.8 μmols/joule (est.)
Spectrum:
- Full Spectrum: Samsung LM301B or LumiLED
- Full Spectrum RED: Samsung LM301B and Osram 660nm Reds
LED protection: Acrylic conformal coating (waterproof)
Lifetime: 50,000 hours (8.5 years @ 16hour/day)
Warranty: 3 years
Hanging weight: 1.3Kg/2.85lbs
Hanging system: Cable hung on cable grip and ratchet hanger
Shipping contents include:
- Light fixtures: 2 x MIGRO LED bar grow lights
- Driver: 1 x MIGRO driver
- Cables: 3.5M cable
- Plug: UK, US, Euro, Swiss or AUS plug options
- Dimming: In built dimmer 10-100%
- Hanger: 1 x Cable hanger

The MIGRO ARAY 240W module is a IIII bar LED grow light with a single driver and a 3.5M long cable.

Flowering coverage: up to 120cm x 60cm (4ft x 2ft)
Vegging coverage: up to 180cm x 90cm (6ft x 3ft)
Hanging height: 16cm / 6″
Light dimensions: 46cm x 98cm / 18″ x 39″
Power consumed: 225 watts
Voltage/Current: 110V – 2.0 Amp, 220V – 1.1 Amp
Total PPF: 610 – 635 μmols/sec (est.)
Efficiency PPF/Watt: 2.7 -2.8 μmols/joule (est.)
Spectrum:
- Full Spectrum: Samsung LM301B or LumiLED
- Full Spectrum RED: Samsung LM301B and Osram 660nm Reds
LED protection: Acrylic conformal coating (waterproof)
Lifetime: 50,000 hours (8.5 years @ 16hour/day)
Warranty: 3 years
Hanging weight: 2.6Kg/5.7bs
Hanging system: Cable hung on cable grip and ratchet hanger
Shipping contents include:
- Light fixtures: 4 x MIGRO LED bar grow lights
- Driver: 1 x MIGRO driver
- Cables: 3.5M cable
- Plug: UK, US, Euro, Swiss or AUS plug options
- Dimming: In built dimmer 10-100%
- Hanger: 2 x Cable hangers

General specifications

Email: info@migrolight.com
Website: www.migrolight.com
Youtube: MIGRO channel – optimise your grow light setup

Telephone: 00 353 (0)1 8245716

Download this manual as PDF

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