V 1.00 - eng
10
LTBRZ3-C series
| INSTRUCTIONS MANUAL
Input voltage
a
17-18 V
19-20 V
Illuminator status
a
ON
a
ON
a
OFF
a
Line number
Length
Power handled
Voltage drop
over the line
Voltage at
input port
Line1
5.0 m
18 W x 4 = 72 W
3.17 V
20.83 V
Line2
0.5 m
18 W x 3 = 54 W
0.24 V
20.59 V
Line3
0.5 m
18 W x 2 = 36 W
0.16 V
20.43 V
Line4
0.5 m
18 W
0.08 V
20.35 V
Table 4: typical power consumptions and voltage drop across cables with 4 daisy-chain connected modules.
Important note:
LTBRZ3 series is equipped with a control circuit that monitors the power supply. This circuit turns
the illuminator OFF if the Voltage detected at the input port reaches a threshold value of 17-18V,
too low for a correct operation of the embedded led driver. In order to let the illuminator restart,
the voltage must reach 19-20V. The diagram below shows the behavior.
10.3 Power supply
The power supply voltage must be 24V. A dedicated and well-regulated power supply is required.
The external power supply must be capable off supplying the current required by the products and
is dependent by how many modules are connected in daisy chain mode.
Parameter
Value
Power supply voltage
+24 Vdc (+/- 5%)
Power consumption
18 W max.
Current consumption
750 mA typ.
Table 5: supply requirements for a single unit.
When multiple illuminators are connected in daisy-chain configuration, please consider these
values.
Parameter
Power supply current consumption
2 units
3 units
4 units
Power consumption
36 W max.
54 W max.
72 W max.
Current consumption
1.5 A typ.
2.25 A typ.
3.00 A typ.
Table 6: supply requirements for multiple uns.
