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E154713
11-11
11: Using the I/O Options
Electro
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The Leader In Power Monitoring and Smart Grid Solutions
11.7: Digital Input Option Card (16DI1)
The Digital Input Option card offers 16 wet/dry contact sensing digital inputs. The
inputs can be used to either count KYZ pulse or detect the status of a circuit.
Accumulators in the Communicator EXT
TM
4.0 software count the transitions of the
inputs. When installing a Digital Input option card, we recommend you reset the
accumulators for the card, in order to prevent erroneous counts. See Chapter 20 of
the
Communicator EXT
TM
4.0 and MeterManager EXT Software User Manual
for
instructions on resetting the input accumulators.
The technical specifications at 25 °C are as follows:
Power consumption:
0.610 W
Number of inputs:
16
Sensing type:
Wet or dry contact status detection
Wetting voltage:
DC (12-24)V, internally generated
Input current:
1.25 mA - constant current
regulated
Minimum input voltage:
0 V (input shorted to V-)
Maximum input voltage:
DC 150 V (diode protected against
polarity reversal)
Filtering:
De-bouncing with 10 ms delay time
Detection scan rate:
20 ms
Isolation:
AC 2500 V system to inputs
The general specifications are as follows:
Operating temperature:
(-20 to +70) °C
Storage temperature:
(-30 to +80) °C
Relative air humidity:
Maximum 95%, non-condensing
EMC - immunity interference:
EN61000-4-2
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