ZES ZIMMER LMG450, Руководство пользователя

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System design LMG450
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Group B1 is set to Ext., by this it gets the synchronisation frequency via A2 what means U1.
Group B2 is set to Ext., by this it gets the synchronisation frequency of A1 what means U1.
If the groups A of both meters are set to Ext. there is no common synchronisation frequency
and the measuring is asynchronous.
B) Synchronisation of the measuring cycle
This stage has a master-slave functionality!
For a simultaneous generation of the measuring values of two LMG the measuring cycle of the
meters has to be exactly the same. Therefore the cycle time of the slave meter can be set to
0ms in the Measure (refer 5.1.1 Globals tab) menu.
In the status bar „0 Ext“ is shown and the green bar flashes every second.
The measuring values of both meters are now generated at exactly the same moment and a
comparison of the values is possible.
Because of the master-slave meaning this adjustment can only be set in one meter. If both
meters are set to 0ms the measurement stops!
C) Synchronisation of the energy measurement
This stage has no master-slave functionality but a control of a master LMG is recommended (if
existing from the last top).
The energy measurement of both meters has to be set to the same mode and should be reset
(refer 5.4.5.1 Integration menu).
The measurement can be started and stopped mutual with the keys „Start“ and „Stop“. A
remote controlled measurement is also possible (see the following section)
D) External synchronisation signal
If the measurement should be synchronised to an additional external signal, this signal has to be
connected to the pins of the D-Sub plug. The plug fitted to the meter which should be
synchronised external has to be opened and the „Freq“ and „Control“ inputs must be
disconnected. After this the external signal can be connected to this inputs.
If the signals are connected to the master LMG also the slave LMG can use them, because the
master outputs are still connected to slave inputs:
Pin 8 Input for the external synchronisation frequency
Pin 7 Input for the cycle
Pin 14 Input for the control signal for energy metering
The connections at this pins of the master plug can be unsoldered and own signals can be
connected.
Ground should be connected to Pin 6, 11 or 13.