Pulse Output - F&F LE-03M CT Quick Start Manual

Pulse output

The meter is equipped with pulse output open collector (OC
type). This allows you to connect another pulse device (SO) that
reads pulses generated by the meter.
No additional connected equipment is required for proper ope-
ration of the meter.
Constant pulse counter is 12000 pulses/kWh for maximum input
current meter, or the secondary current transformer (5 A). When
using a dedicated transformer the number of pulses per 1 kWh is
calculated from the formula:
(12000×5)/Ip,
where:
Ip – primary current of the transformers used.
Example:
for 5/5A transformer (Ip=5): (12000×5)/5=12000 pulses/kWh
for 100/5A transformer (Ip=100): (12000×5)/100=600 pulses/
kWh.
Meter address
Change of meter address is done via the RS-485 port using the
Modbus RTU protocol command to set the desired value in the
meter register. The default meter address: 1
Default setting of the Ip current value: 5.
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