Chapter 1 – Installation of the instrument 
UM-22100H-U User manual ATEQ D520 Page 16/122 
2. INSTALLATION OF THE INSTRUMENT 
2.1. PRESENTATION OF THE CONNECTORS ON THE CASE OF THE D520 
 
2 A 
24 V === 
MADE BY ATEQ 
www.ateq.com 
CE
!
 I     I     I     I     I    I     I     I     I     I    I     I     I     I    I     I  
► O1 O2 O3  ►O4 O5 O6  T1 T2 T3  T4  S1  S2 S3 S4 
24 V ===        24 V === 
J4
 I     I     I     I     I    I     I     I     I     I    I     I     I     I    I     I  
►  I1   I2   I3 ► I4   I5   I6   I7   ►O1 O2 O3 O4 O5 ► 
24 V ===        24 V ===       C         0V 
I (Output) : 
100 mA 
I (Output) : 
200 mA 
J3
J1
J2
NET 
B 
A 
RS485 
ENTREE/IN 
J5
J6
J7
RS485 
SORTIE/OUT 
RS232
/
485
 
J8
P
M1 
M2 
ATM 
SERVICE 
PIN 
TEST