S
ERIAL
C
OMMUNICATIONS
Copyright LMI Technologies Inc. 2003
13
2.4.5
C
ABLE
P
OWER
R
EQUIREMENTS
The cable must be capable of ha15 to 30VDC at 500 mA current
.
The voltage must not drop below 14.5 VDC at the sensor.
2.5
M
AINTENANCE
Since the DynaVision® scanner heads operate optically, the primary maintenance procedure is
keeping the heads, and especially optical surfaces clean of sawdust, oil and pitch
.
Do not immerse the unit in fluids or use a high pressure spray to clean.
The sensor contains optical and electronic components and under no circumstances should the
enclosure be opened
.
2.5.1
M
ECHANICAL
The sensor surface attachment should be periodically checked (once per month or as required)
to ensure that mechanical mounting is secure
.
2.5.2
C
LEANING
The glass surfaces must be kept clean from dirt and grease build up. It is recommended that the
face of the sensor be inspected and cleaned with isopropyl alcohol on a regular basis.
Commercial glass cleaners should not be used;
many have chemicals that leave a residue on
the glass, which can affect optical performance.
2.5.3
A
IR
P
URGE
S
YSTEMS
In very dirty environments, where free-floating particles are present, it is advised that a positive
air pressure systems be installed, such as an
‘
air knife
’
or
‘
blower
’
system. These systems blow
air over the laser and sensor glass surfaces to prevent dust particles from settling
. It is
important that the air be clean and free from oil and water.
The air purge system could be
continuous or pulsed air operated from a timer.
