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35
Technical features
User’s page
33
Rated input voltages
32
39
38
0.01 to 100 pulses programmable depending on the select-
ed CT and VT ratios.
Output type:
open collector (NPN transistor)
V
ON
1.2 VDC / max. 100 mA; V
OFF
30 VDC max.
Pulse duration:
220 ms (ON),
≥
220 ms (OFF) acc. to DIN43864.
Alarm output:
Number of outputs: 1
Alarm type:
up or down.
Setpoint:
can be modified from 0 to 100% of the electrical
scale.
Hysteresis:
can be modified from 0 to 100% of the electri-
cal scale.
Activation time delay:
from 0 to 255 seconds
Response time:
700 ms.
Type:
open collector (NPN transistor)
V
ON
1.2 VDC / max. 100 mA; V
OFF
30 VDC max.
Insulation
(AO2900 module): by means of optocouplers:
2000 V
RMS
between outputs and measuring inputs,
2000 V
RMS
between outputs and power supply input.
Insulation between the two outputs:
functional.
Digital inputs
(on request) AO2940 module
Four operating modes are selectable:
•
energy meters (kWh, kvarh): totals and partials (without
using the digital inputs);
•
energy meters (kWh, kvarh): totals and partials managed
by hour time period (t
1
-t
2
-t
3
-t
4
);
•
total energy meters (kWh, kvarh) and “day-time/night-time”
GAS meters;
•
total energy meters (kWh, kvarh), GAS and WATER meters.
Number of inputs:
2
Input frequency:
20Hz max.
Duty cycle:
50%
Prescaler:
from 0.1 to 100.0 m
3
/ pulse.
