Elcon HiD 2000 Series - Hid 2873;2874

6-17
6.2.12 HiD 2873/2874
For these isolators, the input type (contact or logic level) is configurable. Two distinct check procedures are
therefore presented.
Contact or Open Collector input type:
a) for HiD 2873, set the configuration switches as: S1=ON, S2=ON, S3=OFF Ch.1
for HiD 2874, set the configuration switches as: S1=ON, S2=ON, S3=OFF Ch.1, S1=ON, S2=ON, S3=OFF Ch.2;
b) connect the power supply at the termination board supply terminals; connect the first multimeter A1 (current
mode) at the input terminals; connect the second multimeter A2 (current mode), in series with the resistor box Rc,
at the output terminals; set the supply at 24 V and switch it on; the green power LED must go on;
c) set the resistor box to 300 Ω; the output current must be within 40 and 42 mA; the yellow status LED must be on
and the red fault LED must be off;
d) set the resistor box to 0 Ω (output short-circuit); both the yellow status and the red fault LED must be on.
e) disconnect the resistor box (output open-circuit); both the yellow status and the red fault LED must be on.
f) re-connect the resistor box at the output terminals and set it to 300 Ω; the yellow status LED must be on and the
red fault LED must be off;
g) disconnect the input multimeter A1 (input open); the output current must be within 3 and 5 mA; both the yellow
status and the red fault LED must be off;
h) set the resistor box to 0 Ω (output short-circuit); the yellow status LED must be off and the red fault LED must
be on.
i) disconnect the resistor box (output open-circuit); the yellow status LED must be off and the red fault LED must
be on.