Instruction manual

B-1
Appendix B. Window Defroster Option
Specifications (Parts C2670 or C2681)
B.1 Power Supply
* Warning: The CC5MPX is specified to operate on a 9-
30 VDC supply input range. When the window defroster
is installed the 30 VDC maximum must be reduced to 16
VDC. Operating the CC5MPX with window defroster at
voltages greater than 16 VDC can cause damage to the
CC5MPX.
Operating voltage: 9-16 VDC*
CC5MPX Current Consumption with Defroster On:
1.2 Amps Max. @ 16 VDC
1.0 Amps typical on 12 VDC systems
B.2 Description
The window defroster consists of an aluminum ring with a resistive type
heating element (see Figure B-1 CC5MPX Window Defroster). The CC5MPX
can be programmed to turn on the power to the heater based on the internal
temperature reading of the camera. The on duraction can also be set on the
CC5MPX camera. Refer to Section 11.3 for details on datalogger control of the
window defroster via PakBus.
The heating element is nominally 18 Ohms in resistance. The current draw will
vary with the allowable input voltage range of 9 to 16 VDC. The current draw
from the CC5MPX and heater combined is 1.2 Amps max at 16 VDC and is
typically 1.0 Amps on a Nominal 12 VDC system. It is recommended to use
the CC5MPXPWRCBL2-L with the window defroster option.
The window defroster is useful in preventing and removing light frost and icing
from the camera window. With extreme icing or riming conditions and low
temperatures, the window defroster may not be able to clear the window due to
power constraints of the defroster.
Springs are used to press the window defroster against the window. It is normal
for the window defroster to leave marks on the window. These marks are
outside of the camera’s viewing angle (see Figure B-2 Window Defroster with
Lens Tube).
Note