background image

 

 

 

 

Figure 37. Appearance of Proximity-cards and keyfobs and possible variants of their readers 

 

The terminal has the ability to connect temperature sensors to the 1-Wire interface using a two-wire circuit with 

“parasitic” power. Power is supplied through the same wire as the signal, therefore: the connection is made by two wires 

connected to the connector pins of the GND device (“ground”) and IBUT 1-Wire (signal and power). 

 

Note: 

In order to ensure better immunity with a significant length of the line connected to the 1-Wire interface, temperature 

sensors based on the DS18S20 can be connected by a three-wire circuit with a separate stabilizer supply voltage of 3.5 - 

5V sensors. There is no such stabilizer in the device. 

In order the 1-Wire interface operates, the device must be powered up with the main power supply or connected by 

USB. When it is powered by the built-in battery, the 1-Wire interface does not work. 

 

The red wire of the temperature sensor and the center pad contact TouchMemory are connected to the 1-Wire 

interface (pin 10, “1-Wire”). The black wire of the temperature sensor and the side contact of the TouchMemory pad is 

connected to the negative contact of the device (pin 2, “GND”) or to the vehicle “Ground”. 

Connecting sensors and TouchMemory pads it is important to observe the topology of the common bus. This means 

that all sensors must be connected to one common two-wire cable (called as bus or trunk). It is important not to leave 

open the end of the bus that is opposite to the connected device, it should be closed by the last plug-in sensor. 

 

   

14

7

13

6

12

5

11

4

10

3

9

8

2

1

Fuse

(1A)

«GND»

«+»

«-»

Car battery

Temperature sensors

DS1820

Data

-

+

-

Data

+

-

Data

+

-

Data

Contact pad

Touch Memory (DS1990A)

 

 

Figure 38. Connection diagram for digital temperature sensors and TouchMemory contact pad  

 

For networks sensors construction it is necessary to choose a “twisted pair” cable, as this drastically reduces the 

effect of interference beat. It is recommended to use standard unshielded telephone wire with twisted pairs of category 5. 

This cable is available with two or four pairs of wires. During sensors network laying it is possible to use any cable wires. 

Unused wires should be left free at both ends, as their grounding increases the capacitive load. Guaranteed sensor operation 
is provided with a tire length of not more than 15 meters. With a further increase in the length of the line on the signal 

parameters, the electrical characteristics of the cable may be affected. If it is necessary to use a contact reader for DS1990 

keys, it is advisable to connect it on the bus in front of temperature sensors, that is, closer to the device connector. 

When contacting a key to the contact pad or Proximity-cards or keyfobs to their readers connected to the device in 

operation mode, the information with the key code and the time it was contacted will be sent to the telematics server 

(separate packet with this information). 

Digital temperature sensor codes, keys, maps and keyfobs of the identification systems can be read in the NTC 

Configurator program in the “Telemetry” window with external power connected to the device 

 

 

Summary of Contents for SMART S-2433

Page 1: ...GPS GLONASS TRACKING EQUIPMENT SMART S 2433 Operations manual Installation and connection of the device v1 0 MOSCOW 2020...

Page 2: ...terested in constantly improvement of the manufactured products quality Please contact our technical support by email address support navtelecom ru should you have any questions or problems with the d...

Page 3: ...11 2 DEVICE CONNECTON 12 2 1 Installation 12 2 2 SIM card installation and operation 13 2 3 Power connection 13 2 4 Universal inputs connection 14 2 4 1 Analog sensors connection 14 2 4 2 Discrete se...

Page 4: ...de control of cargo safety by comprehensive measures improving driver and passenger s safety 1 3 Operational principles The device during its operation continuously monitors the status of the connecte...

Page 5: ...t consumption at 12 V voltage in operation mode on average3 mA 80 Current consumption at 12 V voltage with turned off GLONASS and GSM modules is no more than mA 25 Maximum current consumption at 12 V...

Page 6: ...090 1 Optional 2 If maximum operating voltage is exceeded the power protection is activated The device continues to work but is powered by the battery 3 If GPRS operates in poor communications peak co...

Page 7: ...iniUSB connector for connection with a computer SIM card holder slot with ejector yellow button In the upper part of the device unit Figure 3 there are three indicators system indicator SYS modem oper...

Page 8: ...ce cable with MiniUSB connector 1 5 Passport 1 6 Package 1 Figure 4 14 pin connector of Microfit 14 Figure 5 Interface cable with MiniUSB connector Some cases may require connection of additional equi...

Page 9: ...Figure 9 External LED Figure 10 Temperature sensor Figure 11 TouchMemory contact key reader The manufacturer reserves the right to complete the devices with equipment whose set appearance and characte...

Page 10: ...e 12 15 1 front cover 2 fixing hole 3 system LED indicator 4 GSM LED indicator 5 GLONASS GPS LED indicator 6 14 pin connector 7 MiniUSB connector 8 SIM card 1 ejector holder 9 SIM card holder 1 extern...

Page 11: ...Figure 14 Figure 15...

Page 12: ...is prohibited to apply a voltage more than 50 V to the device universal inputs because it may lead to the failure of the device Outputs OUT1 and OUT2 open collector type are designed to control low cu...

Page 13: ...erature more than 60 C for example near heating systems etc It is also prohibited to place the device in a sealed container without heat dissipation It is prohibited to install tracker in places with...

Page 14: ...o the power supply through a 1 A fuse not included in standard equipment set During installation the power supply should be connected the last turn when all the other equipment is already connected Co...

Page 15: ...Analog sensor s connection 2 4 2 Discrete sensors connection The device allows to connect any type of sensors that have two steady states on activated and off normal The voltage thresholds at which t...

Page 16: ...c R1 R2 UIN C1 CPU_pull up VDD Figure 22 Connection of normally closed NC sensors Profiles Discrete NC and Discrete NO allow to work with sensors which when turned on or off close the input to supply...

Page 17: ...be used as an ignition 14 7 13 6 12 5 11 4 10 3 9 8 2 1 Fuse 1 U Ignition switch UIN1 Alarm button GND GND Car battery Figure 25 Connection of the ignition lock and alarm button Digital inputs are co...

Page 18: ...2 5 Built in accelerometer There are virtual sensors based on the built in accelerometer three axis acceleration sensor soft and strong impact sensors displacement sensor and tilt sensor in the devic...

Page 19: ...d Buzzer without built in generator can be connected only to OUT1 because only this line has opportunity to modulate the control signal for the buzzer Buzzer with built in generator can be connected t...

Page 20: ...Designation of the external relay contacts When voltage is applied to control contacts relay is activated and closes or opens the electrical circuit with power contacts Power contacts are always marke...

Page 21: ...90 keys via interface 1 Wire Each DS1990 key is a chip with a unique identification number stitched into it at the manufacturing plant by which the device identifies this sensor Saving the key codes i...

Page 22: ...d of the bus that is opposite to the connected device it should be closed by the last plug in sensor 14 7 13 6 12 5 11 4 10 3 9 8 2 1 Fuse 1A GND Car battery Temperature sensors DS1820 Data Data Data...

Page 23: ...ed to reconnect them by swapping the RX and TX contacts If there is any doubt which sensor line is Tx and which Rx it is possible check this with a multimeter in the voltage measurement mode The measu...

Page 24: ...A RS485 Line B FLS Line A RS485 Line B Figure 40 Connection diagram of fuel level sensors by RS 485 interface In the fuel sensor the periodic data output mode must be turned off and the network addre...

Page 25: ...cond off There is a registration in the cellular network of the operator Weak signal 2 short flashes 1 second off There is a registration in the cellular network of the operator Medium quality signal...

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