The value at the output is set or deleted in the Modbus
register (see Chapter on Modbus Register). The value at the
output is updated in 5 ms intervals.
The sens3 sends the amount of consumed energy as number
of pulses over the output. The user must define the factor for
the number of Wh per pulse. Each pulse is 50 ms long and
has a minimum interruption between two pulses of 50 ms.
Therefore a maximum of 10 pulses per second can be sent.
An example for determination of the factor below the table.
The same as for consumed energy, only that the pulses
transmit the amount of generated energy.
An example of setting the factor for consumed energy:
Assumption: measurement with the sens3 of a machine with a consumption of 100 kWh. The sens3
transmits a maximum of 10 pulses per second; i.e., at 3,600 seconds / hour, a total of 36,000 pulses.
This means with a factor of 1 that 36,000 Wh are transmitted. Therefore, with a measurement of
100,000 Wh (= 100 kWh), the factor should be increased. This would be, with 100,000 Wh / max.
36,000 pulses per hour = 2.778 a factor of at least 3.
Sink
To use the output as sink requires an external source and an external user, as shown in the circuit
diagram below.
If the output of the sens3 is active, a NPN transistor pulls the output to low. The emitter of the
transistor is connected to the IOGND.
Important: the current of the output cannot be used to drive any inductive loads or relays. Only
driving of an optocoupler is possible.
The current is limited to 21 mA and is monitored. If the current exceeds 21 mA it is deactivated
for 5 seconds.
To Next Page
Loading...
Need help?
General