UMG 96-S2
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32
10.4 Pulse length (parameter address 106)
and pulse pause
Pulse length
The pulse that is sent at the pulse output S0
of the device consists of the pulse length and
the pulse pause. The pulse length is set via the
parameter address 106:
Setting range (address 106):
10 .. 1000,
10 = 10 ms
Standard setting:
50 = 50 ms
The typical pulse length for S0 pulses is 30 ms.
Pulse pause
The pulse pause is
·at least as long as the selected pulse length.
·dependent on the e.g. measured energy and
can be hours or days.
Pulse length
10 ms .. 1 s
Pulse pause
>10 ms
Fig. Example of pulse length and pulse pause
Due to the minimum pulse length and the
minimum pulse pause, the following values for
the maximum number of pulses per hour result:
Setting
of
address
106
Pulse length Pulse pause
Max.
pulses/h
10
10 ms
10 ms
180 000
30
30 ms
30 ms
60 000
50
50 ms
50 ms
36 000
100
100 ms
100 ms
18 000
500
500 ms
500 ms
3 600
1000
1 s
1 s
1 800
Examples for the maximum possible number of pulses per
hour.
NOTE
Pulse interval
·The pulse interval is proportional to the power
within the selected settings.
Measured value selection
·During the programming with the GridVis
software, you will receive a selection of energy
measured values which are derived from the
power values.
10.5 Determining the pulse value
Establishing the pulse length
Establish the pulse length according to the
requirements of the connected pulse receiver.
With a pulse length of e.g. 30 ms, the device
can emit a maximum number of 60,000 pulses
per hour (see table „Examples for the maximum
possible number of pulses per hour.“ on page
32).
Calculating the maximum connected load
Example:
Current transformer
= 150/5 A
Voltage L-N
= max. 300 V
Power per phase
(U x I)
= 150 A x 300 V = 45 kW
Power with 3 phases
= 45 kW x 3
Max. connected load = 135 kW
Calculating the pulse value
Pulse value =
max. connected load
max. number of pulses/h
Pulses/Wh
Pulse value
= 135kW / 60000 pulses/h
Pulse value
= 0.00225 kWh/pulse
Pulse value
= 2.25 Wh/pulse
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