Power Connection - NAVTELECOM SMART S-2435 Operation Manual

Assemble the device body in reverse order.
The balance of funds on SIM-cards should be sufficient for the device to operate on GPRS.
The power supply of the system is carried out from the on-board network of the car, which should within the
limits indicated in Table 1, in the section
when the main power is disconnected.
When voltage surges, which is more than the specified ratings, occur, the built-in overvoltage protection
system will operate in the device. It is strongly recommended to connect the device to the power supply through a
1 A fuse. During installation the power supply should be connected the last turn when all the other equipment is
already connected. Connection of the power supply minus contact (GND) is carried out to the vehicle "ground".
Note:
On vehicles with disconnection of the "ground" in order to ensure uninterrupted operation, it is allowed to
connect the device power supply to the "+" and "-" circuits of the vehicle battery. In this case, it is not allowed to
connect any sensors, signal circuits or power supply circuits through which the device can be connected to the car
body. Also, when the car is powered by the battery in which the "ground" is disconnected, sensors cannot be
connected to the device, the "-" power supply of which is connected to the car body, without the use of galvanic
isolation devices.
With an operation supply voltage and with the observance of the temperature mode of charging the built-in
battery (see the Table 1, in the section
through the circuit of the device.
When the system operates only from the built-in battery, the digital interfaces CAN and 1-Wire (IButton) do
not function due to insufficient voltage. Power supply from the built-in battery is sufficient for operation of universal
inputs, RS-232 and RS-485 interfaces, built-in accelerometer, GSM modem, GLONASS / GPS receiver and for the
implementation of control outputs.
Figure 20. SIM-card installing in the second slot

2.3 Power connection

"Basic technical characteristics", or from the built-in rechargeable battery
"Basic technical characteristics"), the built-in battery is constantly recharged