Hella 2XD 980 911-701 Guide Rapide page 2

Important Notes for
Installer and Owner
Operating Modes
• Steady state: Lamp operates as a continuous on signal.
• Flash state: Lamp operates in the flash mode pre-selected by the user.
• Blitz state: Lamp operates in a burst of quad flashes (intended for emergency situations).
Cable connections
Cable Colour Steady
White Negative (-)
Red Positive (+)
Blue *
Brown *
* Cable should be isolated (Not connected to either positive (+) or negative (-).
Programming Mode (selecting a flash pattern)
The programming mode allows the user to select one of the ten available flash patterns (see Fig. 1).
Step by step instructions:
1. Connect the On (red) cable to positive (+) and the Negative (white) cable to negative (-).
2. Connect the Flash (blue) cable to negative (-). Blitz state (Flash pattern 4) will start flashing.
3. Connect the Sync (brown) cable to positive (+), after approximately 10 seconds the lamp will flash
twice then stay on (steady state).
4. The Flash (blue) cable and the Sync (brown) cable should now be disconnected.
Note: Ensure that the other cable connections are not disturbed (white and red) for the remaining
steps. If power is interrupted, programming will need to be repeated from Step 1.
5. The previously selected flash pattern will now activate (factory supplied default is flash pattern 1).
6. Connect then disconnect the Flash (blue) cable to negative (-) to cycle and select the next flash
pattern as shown in Fig. 1 below. Note: Connecting the Flash (blue) cable to positive (+) will change
the flash pattern off-set timing - please see the next section before using this feature.
7. Disconnect power from all cables for at least 10 seconds to save the currently selected flash pattern
(When operating in flash state the pattern selected will now be used).
Note: Lamp will automatically exit programming mode after approx. 65 seconds of inactivity on the
Flash (blue) cable.
Figure 1. Flash pattern timing
Pattern
order
0
1
2
3
4
5
6
7
8
9
10
250ms
2
Flash Blitz
Negative (-) Negative (-)
Positive (+) Positive (+)
Positive (+) Negative (-)
* *
500ms 750ms
1 second
Important Notes for
Installer and Owner
Synchronise an array of lamps (Two to four lamps)
To control the timing of an "array" (multiple lamps connected together) so that the chosen flash
patterns always start at the same time.
Wiring Diagram A (Two lamps in synchronised mode)
brown
red
+
white
-
blue
Lamp 1
Step by step instructions:
1. Individually program each lamp to the desired flash pattern as shown in the "Programming
Mode" instructions (it is recommended that the same flash pattern be selected for all lamps to be
synchronised).
2. Connect lamps as per Wiring Diagram A.
Note: It is recommended that the earth returns should be connected using low impedance wiring with
no other significant ground currents in the ground wiring. It is not recommended to use the vehicle
chassis for connecting the ground and ground loops must also be avoided.
Off-set Flash Patterns:
It is possible by adjusting the offset during the programming phase to ensure that all flash patterns can
be synchronised together or opposed. The offset required to achieve this will be different depending on
which flash pattern the user has chosen as the default. During Step 6 of the programming instructions
the flash pattern timing can be off-set by multiples of 250ms (90°) by connecting the Flash (blue)
cable to positive (+) (See Fig 2. example).
This feature can also be used to create a "chase" function whereby four lamps can be programmed
to flash one after the other in sequence.
Figure 2. Four lamps using flash pattern 5, each offset by 250ms (90°)
0°
on
270°
90° 270°
o 0ms
180°
Lamp 1 (0°) Lamp 2 (90°)
brown
red
+
white
-
blue
sync flash
Lamp 2
sync blitz
0°
0°
90°
90°
270° 500ms
250ms
180° 180°
Lamp 3 (180°)
on
o 0ms
0°
270°
90°
750ms
180°
Lamp 4 (270°)
250ms