Galak Electronics VG-305B User manual

Galak Electronics
Electronic kits and components
VG-305B AC Traffic Light Controller
Thank you for your purchase of the AC Traffic Light Controller. Our products are engineered to
provide key elements for understanding electronics design and theory. In fact, we make it our
goal to produce electronics that will apply important electronic principles using analog and
digital technology, and easy to find off-the-shelf components.
Our Programmable series of kits incorporate microcontroller technology due to the simplicity of
the electronics and ease of assembly. It allows for a greater range of functionality, while
maintaining a cost effective solution for some of today’s more challenging electronics needs
and requirements.
The AC Traffic Light Controller uses a simple algorithm to access the selected pattern and
timing in its internal ROM and sequences this information to the LEDs. Each pattern uses 16
bytes for each step of the unique pattern. If you are interested in learning more about the
program feel free to email us at the address listed below.
Before getting starting, make sure you have a VG-305B Traffic Light controller and four (4)
adhesive standoffs. If any of the listed items are missing, please contact us toll free at (302)
832-1978 or online at [e-mail].
We appreciate your business, so feel free to provide us with any suggestions or comments you
may have regarding this kit or any other Galak Electronics kit.
Website: GalakElectronics.com
Email: [e-mail]
Phone: [phone]

Quick Start (separate neutrals)
1. Connect the AC Line and Neutral power wires as shown below. Apply AC power and verify that the three
LEDs labeled LED1-LED3 illuminate. Disconnect power.
2. Connect the wires from your traffic light to the connectors as shown below. To change the program
sequence, please refer to the section titled Mode Selection. The duration can be adjusted with VR1
(shown below left).
Quick Start (combined neutrals)
1. Connect the AC Line and Neutral power wires as shown below. Apply AC power and verify that the three
LEDs labeled LED1-LED3 illuminate. Disconnect power.
2. Connect the colored wires from your traffic light to the connectors as shown below. The white neutral
wires should all be tied together with the power neutral using a wire nut (illustrated below).
VR1 duration
time adjust
white/neutral
from red light
from yellow light
from green light
from red light
from yellow light
from green light
IMPORTANT NOTICE:
Please observe all applicable electrical wiring
codes. Replace fuse only with an equally rated UL approved fuse.
Contact Galak Electronics if you have any questions about installation.
VR1
duration
time adjust

FEATURES:
• Easy to program mode selection with pushbutton control.
• 25 unique light sequence modes including 12 realistic traffic modes.
• Separate digital control for "YELLOW" allowing for more realistic operation.
• User selectable time delay from 1 seconds to 2 minutes.
• Wide input voltage range from 90-130VAC with input fuse protection.
• Independent outputs channels for operating LEDs or incandescent lamps.
• Solid state switching for silent operation (no clicking mechanical relays).
• Snubberless™ technology to protect from inductive kickback and voltage spikes.
• Onboard LEDs to show current output states.
• Compatible with virtually all types of 120VAC traffic lights.
• Four adhesive standoffs to allow for easy mounting or fixturing.
Powering up the AC Traffic Light Controller
IMPORTANT NOTICE: Please observe all applicable electrical wiring codes when
utilizing this product. This device is fused with a 5A/250VAC fast acting fuse. Replace
only with an equally rated UL approved fuse. The user understands that Galak
Electronics is not liable for any damages (including shock, fire, property damage or death) due
to the improper use or installation of this product. Please contact us if you have concerns
about safe and proper installation of this product. This unit is not intended for outdoor use.
After double-checking your wiring, attach your AC power leads to CN1. The neutral wire (white)
connects to the terminal marked NEUT and the hot wire (black) connects to the terminal marked
LINE. Make sure that both terminals are sufficiently tight to ensure that the wires don’t come
loose. Do not power the unit on at this point. Make sure the unit is on a non-conductive surface
or securely mounted. It is not necessary to connect the outputs at this point.
Using a screwdriver, turn VR1 all the way counter-clockwise to set the sequencing speed to the
minimum. Apply AC power to the unit. The Red LED should illuminate immediately. After about 5
seconds the Green LED will illuminate and eventually the Yellow LED will illuminate briefly
before returning to Red. To increase the duration of the Yellow LED simply press the button
marked "YLW DLY." The default yellow duration is 3 seconds. With each press of the button, the
duration will increase by one second. When the maximum duration of 8 seconds is reached, the
next press of the button will return the yellow duration to 3 seconds. Experiment with VR1 and
the yellow duration to get the right combination of cycle time and yellow light time.
If you don’t get any response from the LEDs after applying power, disconnect your AC power
source and check all your connections. If you still don’t get any response or if the fuse has blown
please contact Galak Electronics. In the event that the problem can’t be resolved, we will be
happy to repair your unit free of charge in most cases. You just pay the shipping costs.

Modes of Operation
Mode 1:
Standard Traffic
Light Sequence
Mode 2:
British Traffic Light
Sequence
Mode 3:
Red-Yellow-Green
All Flash Sequence
Mode 4:
Red-Yellow-Green
Up-Down Sequence
Mode 5:
Old US Traffic Light
Sequence
Mode 6:
Red Light Flashing
Only Sequence
Mode 7:
Yellow Light
Flashing
Only Sequence
Mode 8:
Green Light
Flashing
Only Sequence
Mode 9:
Alternating Red-
Green Light
(RR crossing)
Mode 10:
Red-Off-Green-Off
Alternating
(Jurassic Park)
Mode 11:
Pedestrian with
Green to Flashing
Red to Solid Red
Mode 12:
Single Light R
andom
Flashing Sequence

Mode 13:
Dual Light Random
Flashing Sequence
Mode 14:
Single Light Random
Flashing with
blanking
Mode 15:
Sweeping Lights
Down Sequence
Red-Yellow-Green
Mode 16:
Sweeping Lights
Up Sequence
Green-Yellow-Red
Mode 17:
Sweeping Lights Up-
Down Sequence
Mode 18:
Old Fashion ACME
Traffic Light
Sequence
Mode 19:
Old Fashion Traffic
Light Sequence with
change gaps
Mode 20:
Old Fashion Traffic
Light Sequence with
change overlap
Mode 21:
Red-Yellow-Green
sweep to all On and
then to all Off
Mode 22:
Red-Yellow-Green
sweep to all On and
then sweep to all Off
Mode 23:
Green-Yellow-Red
sweep to all On and
then to all Off
Mode 24:
Green-Yellow-Red
sweep to all On and
then sweep to all Off
Mode 25:
Green-Yellow-Red
sweep back and
forth all lights On
00mS
00mS
00mS
00mS
00mS
00mS

Mode Selection
To select one of the twenty-five modes, first remove
the JP1 jumper (pictured right). Push the PROGRAM
button to cycle through each pattern shown in the
table above. When the button is pressed, the LEDs
will turn on from Red to Yellow to Green and repeat
that pattern. Count the number of times the LEDs
flash to determine the selected sequence. For
example, if mode 5 is selected, the outputs will flash
Red, Yellow, Green and then Red, Yellow to indicate mode 5. Once the desire mode has been
selected, you can replace JP1 to exit the program mode.
Yellow Light Duration
The yellow light duration can be adjusted independently from the main duration control when
one of the standard traffic light modes is selected. Press the button marked "YLW DLY" (pictured
above) to increase the duration by 1 second. Only the yellow LED will flash to indicate the
number of seconds. When 8 seconds has been reached the next button press will revert the
duration back to 3 seconds. Please note that JP1 has no effect on the yellow duration set.
One Touch Program Mode
The One Touch Program mode allows you to switch between programs on the fly without going
through the LED count off. Every time you press the button, the program will immediately
advance to the next program. If the button is pressed with mode 25 active, the program will
revert to mode 1. To use One Touch mode JP1 must be fitted. Once you've selected a mode
that you like, you can connect the outputs to your traffic light.
Connecting to the Outputs
Now that you have verified that the unit is functioning properly, you can
connect up your AC loads. First, make sure the AC power is disconnected
before making any connections. Insert the neutral wire (white) from your RED
light into terminal “1” of CN4 and insert the hot wire (typically red) from your
RED light into terminal “2” of CN4 (denoted with "RED").
Next, Insert the neutral wire (white) from your YELLOW light into terminal “1”
of CN3 and insert the hot wire (typically brown) from your YELLOW light into
terminal “2” of CN3 (denoted with “YELLOW”).
Finally, Insert the neutral wire (white) from your GREEN light into terminal “1”
of CN2 and insert the hot wire (typically green) from your GREEN light into
terminal “2” of CN2 (denoted with GREEN). Please note that if only one
neutral wire is available it can be connected to any of the three terminal “1”
connections.

Make sure that all six terminals are sufficiently tight to ensure that the wires don’t come loose. At
this point you are ready to power up your AC Traffic Light Controller. If everything is functioning
properly, your traffic light should follow the LEDs on the controller. Please note that the power
resistors will get warm (up to 50°C or 122°F). This is completely normal.
IMPORTANT NOTICE: If you are installing this unit in a metal enclosure, the
enclosure must be properly grounded. If you are connecting directly to a junction
box, make sure to use a 3-conductor UL approved cable. The green wire should be
connected to the junction box ground and the other end should be connected to the traffic light
enclosure via a ground stud or self-tapping screw. Conversely, if using a power cable, ensure
that the power cable has a ground prong, and again connect the green wire to the traffic light
enclosure via a ground stud or self-tapping screw. Failure to follow these precautions may lead
shock, fire, property damage or even death. Please contact use at [phone] if you have
any questions or concerns.
SPECIFICATIONS:
Supply Voltage 90VAC to 130VAC (180VAC to 260VAC for 240VAC version)
Power Consumption 4mA @ 120VAC (approximately 0.5 watts with no output load)
Max Output Rating 120VAC @ 4.2A per channel (fused at 5A)
Input Connector 14-26AWG, 250VAC @ 16A Screw Terminals
Output Connectors 14-26AWG, 250VAC @ 16A Screw Terminals
Cycle Delay Range VR1: 1-120 seconds (Yellow 3-8 seconds)
Board Dimensions 3.94 x 1.97" (10 cm x 5.0 cm)
Board Material 0.062" (1.6 mm) FR-4, with green solder mask & silk screen
Finished Weight 1.15 ounces (33 grams)
Good luck and enjoy you new AC Traffic Light Controller. We appreciate your business.
Galak Electronics
Electronic kits and components
Email: [e-mail]
Phone: [phone]

Galak Electronics
Warranty Certificate
Galak Electronics warrants that this product is free from manufacturers defects in
material and workmanship.
WARRANTY PERIOD
For as long as you own this product we guaranteed it to operate properly under normal
conditions.
CONTENTS OF THE WARRANTY
Should a Galak Electronics product fail at any time, return it to us using the contact
information below. Galak Electronics will repair it, or at our discretion, replace it at no
additional charge, and pay the return shipping cost. If the failure is found to be due to
user negligence (i.e. exceeding maximum rated specifications, water damage, short
circuits) you will be charged a maximum cost no more than the original purchase
price.
RESTRICTIONS OF WARRANTY
This warranty has been given provided that the Galak Electronics Product is used in its
normal intended use and that due care and compliance with the instructions given by
Galak Electronics are observed. The obligations of Galak Electronics have been
restricted to these warranty terms and conditions and the warranty thus does not cover
losses incurred as a result of damage to other property or persons. The warranty does
not cover defects which are the result of: transportation of the Galak Electronics
Product; negligence by the user of the Galak Electronics Product or failure to observe
the instructions given by Galak Electronics or proper care; circumstances outside the
control of Galak Electronics, such as theft, fire, accidents or acts of vandalism; failure
to observe the installation or operating instructions; and normal wear and tear. The
warranty does not cover defects which do not hinder normal operation of the Galak
Electronics Product, such as repair of superficial scratches.
Galak Electronics
[e-mail]
Phone: [phone]