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| Pulse Gear (pulse value modulator) Modul |
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Hardwaremodul GEAR 02,
Order-Number 00981
At some relays a pulse gear are hardware implemented.
For some relays the pulse gear module GEAR 02 are optional available.
At all Data Logger a pulse gear are software implemented.
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The values of pulses can be changed using a pulse value modulator.
Example: A meter delivers 75 pulses per kWh. Each pulse is evaluated as 0.01333 kWh. When a relay with
a pulse value modulator is added, then the resulting pulses can be given values of e.g. 0.01 kWh, which can
be processed by adding simple tariff units to the system.
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| Example for Calculating the Pulse Value Modulator Settings |
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| RE |
= |
effective pulse constants |
| CZ |
= |
the meter's pulse constants |
| Pt |
= |
product of the transformer proportions |
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meter pulse constant |
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transformer proportion |
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input pulse constant (after reduceing of numerator and denominator) |
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| R |
= |
ratio |
| RA |
= |
desired pulse constant of the relay output |
| RE |
= |
input pulse constant (reduced) |
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| Example: |
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| Wanted: RA = 0,1 pulse/kWh |
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Reduce or expand together RA and RE to a whole number. |
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| Notice: |
Values for RA and RE must be given in whole numbers
R £ 1 !
Ratio values of more than "1" may not be used! |
| Examples for DIP-switch settings: |
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| Numerator (Zähler) = 3, Denominator (Nenner) = 250 |
Recalculation for setting in binary (8-digit):
Numerator = 00000011, Denominator = 11111010 (1 = Switch "ON", 0 =
Switch "OFF")
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| Examples for the 7FR5043, 7FR5071 and 7FR5072 relays: |
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Examples for GEAR 02
(in Relays 7FR5067, 7FR5073, ITR141 and ITR242): |
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