SHO-ME 21.7490 User manual

TECHNICAL SPECIFICATIONS INSTALLING THE 21.7490
CONNECTION DIAGRAMS
INPUT VOLTAGE .................... 10 to 30 Vdc
INPUT CURRENT ................... 8.5A at 12.8V, 4.2A at 25.6V
INPUT POWER ........................ 110 Watts
OUTPUT POWER .................... 90 Watts
OUTPUT ENERGY................... 74.4 Joules
FLASH RATES
Double Flash: ................ 170 flashes per minute.
Quad Flash: ................... 140 flashes per minute.
Quintuple Flash: ............ 140 flashes per minute.
Mega Flash:................... 140 flashes per minute.
IMPORTANT! NOTThis product is waterproof. It must be mounted to a metal surface in a clean dry area.
1. Physical Mounting
2. Strobe Head installation
Mount the power supply in a clean, dry location. Mounting the
unit to a flat metal surface will aid in heat dissipation. Use the
power supply as a template to mark the hole locations. The
mounting holes will accept up to a 1/4" bolt.
Plug the strobe light heads into the outlets. Keep the following in
mind:
• Heads connected to outlets 1 and 3 flash at the same time.
Note: The power
supply baseplate must be connected to chassis ground (GND) to
reduce radio interference.
• Heads connected to outlets 2 and 4 flash at the same time.
• Heads connected to 1 and 3 alternate with heads 2 and 4.
The divides equally between all strobe heads
installed. Example: 90 Watts into 2 heads = 45 Watts per head.
Consider this before selecting the number and type of strobe
heads to install. Do not exceed the wattage rating of the head.
If you have purchased a pre wired switch harness, follow the
included instructions. If you are wiring the system yourself
follow the instructions below and the diagrams on the next page.
• Connect the RED wire to battery positive (+) or a fuse panel
circuit rated for at least 15 AMPS.
• Connect the BLACK wire to battery negative (-) or directly to
vehicle chassis.
• The VIOLET wire controls HIGH / LOW power. Low power
limits the flash intensity for nighttime use. Connect VIOLET to
+12/24V for LOW power, leave VIOLET disconnected for HIGH
power.
• YELLOW, GREEN, BLUE wires select the flash pattern and
also control which strobe head outlets are activated. A wire is
'selected' when connected to +12/24V. When all control wires are
unconnected the power supply is in a low current SHUTDOWN
MODE (Current is typically 25ma). See the PATTERN TABLE on
the next page for a complete list of functions.
output power
Note: This supply reduces output power when only 2 outlets are activated.
3. Electrical Hookup
:
:
POWER HARNESS
CONTROL HARNESS
Note: Use the correct size wire for power connections.
The length of the wires determines the size needed.
1 to 10 ft. use 18AWG wire.
10 to 20 ft. use 16AWG wire.
20 to 35 ft. use 14AWG wire.
35 to 50 ft. use 12AWG wire.
Note: VIOLET, YELLOW, GREEN and BLUE are all
circuits and can be wired with a minimum of 22AWG wire.
Low Current
MODEL NO. 21.7490
WIRING INSTRUCTIONS
SHO-ME®
YELLOWRED or GREEN
BLACK
WHITE
GREEN
BLUE
Power Connector
Control Connector
1 2 3 4
RED 10 to 30 Volts
+
FUSE 15 AMP
BASEPLATE
BLACK GROUND-
VIOLET HIGH/LOW power
Connect to 10 to 30V for LOW power,
leave unconnected for HIGH power.
+
Strobe Head Outlets
123 RED
BLACK
VIOLET
POWER HARNESS
123
YELLOW
GREEN
BLUE
CONTROL HARNESS
STROBE HEAD
EXTENSION CABLE
123 RED or GREEN
Ridge indicates pin 1
BLACK
WHITE
Heavy duty extension cables have a GREEN wire,
Light duty extension cables have a RED wire.
SHO-ME
STROBE OUTLETS CONTROL
LOW
POWER
POWER
FUSE 15A
REDRED
BLACKBLACK
VIOLETWHITE
YELLOW
GREEN
BLUE
WARNING: High Voltage. Please wait 5 minutes after shutting this
unit off before attempting service. Warranty void if seal is broken.
INPUT VOLTAGE: INPUT: OUTPUT POWER:10 to 30 Vdc 110 WATTS(8.5A) 90 WATTS
MODEL NO. 21.7490
4 OUTLET POWER SUPPLY
MANUFACTURED IN U.S.A.

WIRING/CONNECTION DIAGRAMS PATTERN TABLE
TROUBLESHOOTING
ACCESSORIES
DIAGRAM (1): ON/OFF and Low Power using two toggle
switches. Flash pattern is: Quad Flash All Heads.
Selecting a flash pattern: In the table below, find the desired
flash pattern. Connect the wires marked to the
'load' side of the ON/OFF switch.
Example: Diagram 1 uses pattern #4 (Quad Flash, All Heads).
To change this to pattern #6 (Mega flash, All Heads)
connect the YELLOW and BLUE wires to the switch.
POWER
Remove the remaining
wires, or connect them to Ground.
Remove the remaining wires, or connect them to Ground.
-
-
DIAGRAM (2): ON/OFF and Low Power using one DPDT
rocker switch. Flash pattern is: Quad Flash All Heads.
DIAGRAM (3): Selective switching of strobe head pairs. Low
Power selection. Flash pattern is: Quad Flash All Heads.
Blown Fuse
Erratic behavior (and/or) shutdown
: The 21.7490 will blow a fuse if the input
voltage is reversed. If this happens, first locate the wiring
fault, then replace the fuse with one of the same rating.
: The 21.7490 will
shut down if there is a short circuit condition on any one of
the strobe heads. If the electrical conductors connecting
the power supply to the strobe heads are exposed to water
a short circuit will result. The first sign is intermittent
operation, followed by complete shutdown of the strobe
system. To find the short circuit, unplug all strobe head
cables from the 21.7490. Test cable/head at a time
until the problem is found.
one
PATTERN YELLOW GREEN BLUE FUNCTION
1SHUTDOWN
2POWER Quad Flash, Head 2 ALT 3
3POWER Quad Flash, Head 1 ALT 4
4POWER POWER Quad Flash, Head 1&3 ALT 2&4
5POWER Mega Flash, Head 2 ALT 3
6POWER POWER Mega Flash, Head 1&3 ALT 2&4
7POWER POWER Mega Flash, Head 1 ALT 4
When in High Power: Quintuple Flash, Head 1&3 ALT 2&4
When in Low Power: Double Flash, Head 1&3 ALT 2&4
ALT = "Alternates With"
POWER POWER POWER
8
The following accessories are available to make the
installation of the 21.7490 power supply even easier:
A Fully assembled switch panel which provides simple
On/Off and Low power control. Provides the same
functions as shown in Diagram (1)
A Fully assembled switch panel which allows selective
switching of strobe head pairs and also includes Low
power control.
A fully assembled switch panel which provides full
selection of all flash patterns as well as On/Off and Low
Power control.
21.7001
21.7002
21.7003
ON/OFF - LOW POWER SWITCH PANEL
SELECTIVE SWITCHING PANEL
ROTARY SWITCH PANEL
Provides the same functions as shown in
Diagram (3)
All panels are pre-wired with 15'(standard) of cabling.
INSTALL- PS 21.7490.CDR
Unused wires should either be removed, or connected to Ground.-
SPST SPST
1
2
3
15
1
2
3
BATTERY -
GND, vehicle
chassis.
RED
YELLOW
GREEN
BLUE
BLACK
VIOLET
NO CONNECTION
NO CONNECTION
LOW POWER
SWITCH
ON / OFF
SWITCH
NO CONNECTION
POWER HARNESS
CONTROL HARNESS
Toggle switches:
General purpose Single
Pole Single Throw.
Current through switch is
less than 1 amp.
BATTERY +
OR CONSTANT
POWER CIRCUIT
1
2
3
15
1
2
3
BATTERY -
GND, vehicle
chassis.
RED
YELLOW
GREEN
BLUE
BLACK
VIOLET
NO CONNECTION
NO CONNECTION
POWER HARNESS
CONTROL HARNESS
Rocker Switch:
General purpose Double
Pole Double Throw.
Current through switch is
less than 1 amp.
BATTERY +
OR CONSTANT
POWER CIRCUIT
Unused wires should either be removed, or connected to Ground.-
15
SPST SPST SPST
1
2
3
1
2
3
BATTERY +
Fuse panel, Ignition or
accessory circuit.
BATTERY -
GND, vehicle
chassis.
RED
YELLOW
GREEN
BLUE
BLACK
VIOLET
NO CONNECTION
NO CONNECTION
LOW POWER
SWITCH
HEADS 1+4
ON/OFF
HEADS 2+3
ON/OFF
NO CONNECTION
POWER HARNESS
CONTROL HARNESS
Toggle switches:
General purpose Single
Pole Single Throw.
Current through switch is
less than 1 amp.
Unused wires should either be removed, or connected to Ground.-