In the following picture we show as to connect the secondary side of current transducer.
Between the pins 3 and 8 the DCT have a normally closed switch while the measure is correct. In the same manner, DCT provide a normally open switch while the measure is correct between pins 3 and 7.
D-SUB standard connector:
The D-sub connection correspond to the next table.
Pin 1 : Connected to GND internally
Pin 2 : (For Factory use only)
Pin 3 : Input to normally closed/open Switch
Pin 4 : 0V
Pin 5 : Earth connexion
Pin 6 : Output Current + ( Current Direction F to B)
Pin 7 : Output to normally open switch (1A DC MAX)
Pin 8 : Output to normally closed switch (1A DC MAX)
Pin 9 : Vcc