Device Interface Connector - NAVTELECOM SMART S-2421 Operation Manual

1 - Power "Plus" (+ U
2 – "Ground" (GND)
3 - Universal input 1 (UIN1)
4 - Universal input 2 (UIN2)
5 - Universal input 3 (UIN3)
6 – Output 1 "open collector" (OUT1)
7 – Output 2 "open collector" (OUT2)
8 – Not used
9 – Not used
10 - 1-Wire Interface Line (iBUT)
11 – Not used
12 – Not used
13 – Not used
14 – Not used
"Plus" of the main power supple +U
«Ground» GND is connected to the "ground" of the car.
The universal inputs UIN1, UIN2 и UIN3 can be set up as discrete, analog, counting or frequency. It allows to
connect to them a wide range of different sensors, for example, frequency (frequency from 1 Hz to 2000 Hz) and analog
(voltage from 0 V to 31 V) FLS, impulse fuel consumption sensors (DRL), buttons or switches.
Attention!
It 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-current loads up to 500 mA. When
activated, a negative signal ("Ground") is formed on these lines. Connection of external executive devices with a load
current higher than the maximum allowed should be made using additional switching relays. The relay type is selected
based on the requirements for the value of the switched current, voltage, and also depending on the power of the connected
device.
The interface line 1-Wire (iBUT) is used to connect the contact pads of TouchMemory keys, Proximity-card readers
and digital heat-sensing device.

1.8 Device interface connector

Figure 15. System 14-pin interface connector
)
G
should be connected via an external fuse.
6