AutoGRAPH-GSM • USER MANUAL
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TechnoKom © 2015
Connection of Outputs
Internal Diagram of Outputs
External Connection Diagram of Digital Outputs:
The AutoGRAPH-GSM has two open collector digital outputs: the first output is arranged
on the primary interface connector (pin 6), the second is arranged on the additional 4-pin
interface connector (pin 10).
The outputs are intended to control various external actuators, as well as to activate warning
devices
Minimum recommended load current is 10 mA.
Maximum load current should not exceed 500 mA.
AutoGRAPH-GSM
DIGITAL OUTPUT
The following is an example of a LED and relay connected to the controller output. To
avoid damage of the controller output due to back EMF, induced from disconnecting an
inductive load, connect a protective diode in parallel to the relay. To select a correct diode
make sure that direct current of this protective diode is at least 1.5 times greater than the
relay holding current.
OUTPUT 2 - ORANGE (11)
RELAY
VEHICLE SYSTEM VOLTAGE (+)
OUTPUT 1 - GRAY (6)
TO A
CTU
AT
OR
RED (1)
LED
PR
O
TEC
TIVE DIODE
R
1кОhm*
* Use R = 1 … 2 kОhm, if supply voltage is 24 V.
Use R = 500 Ом … 1 kOhm, if supply voltage is 12 V.