Powering a CX23-R from a vehicle

The following illustrates power connections for using a vehicle electrical system as the SomatXR system power source. The included diagram is not intended to be complete or detailed instructions.

CAUTION
Connection to the positive power terminal without proper grounding may result in a blown fuse and/or other damage to the SomatXR system. Field repairs are not possible, since these are sealed units.

NOTE
When using additional cable length to make the connections, select an appropriate gauge wire to carry sufficient current (≥10 amps).

The diagram shows two switch options for powering a SomatXR system using a vehicle battery that has a permanent ground connection to the vehicle chassis. The 100k Ohm pull-up resistor is installed inside the CX23-R. Use a switched main power connection or use the remote switch wiring in the 1-KAB2115-2 cable to switch off the CX23-R. The switched main power option will cause the CX23-R to draw on the super capacitors installed in it. The remote switch option will not have as great a draw on the super capacitors installed in the CX23-R.

NOTE
When main power is removed, super capacitors in the CX23-R become engaged to allow the unit time to save data and properly shut down. The super caps will need several seconds to recharge between cycles. If power keeps getting cycled on and off these super caps may not have enough time to charge up. Data may be affected if the super caps became prematurely depleted of energy. If the CX23-R stays permanently connected to battery power and the remote switch is used to shut off the unit, the super caps do not engage during shutdown.

Facts about the remote switch:

  • The remote switch is pulled up to Vehicle power through a 100k Ohm resistor.
  • To shut the unit off, set the remote switch input to ground.