10H92873 - rev. 8 - 01/2019 - pag. 19
6.6.3. OFFSET COMPENSATION TUNING
The parameter 731.32 has been designed to compensate the phase error, introduced by the UPS control,
between the frequency reference signal from the MBSM and the inverter output signal. To carry out this
procedure it is necessary to connect an oscilloscope between the reserve input and inverter output. The
MBSM must already be installed and connected to the UPS system. All parametrs setting above must be
completed before to start offset tuning.
80-eXL & EXL S1
The offset compensation tuning should be performed on all UPS of the System (Single, Distributed,
Centralised).
TRINERGY CUBE
The offset compensation tuning should be performed on all UPS of the System (Single, Distributed,
Centralised).
PROCEDURE:
Once these conditions have been satisfied, proceed as follows:
• Connect the oscilloscope to the first UPS (line A of Dual bus system);
(Connect "Channel 1" to "Bypass Input L1 & N" and "Channel 2" to "UPS Output L1 & N", as shown in the following
figure)
Fig. 16 -
The MBSM priority switch must be set to A BUS priority, by using the selector switch on the front panel.
• With NO LOAD connected, start the inverter;
• Open the reserve input switch QS2;
• Verify the phase error between inverter and bypass on the oscilloscope.
The following figures illustrate examples of NO SYNC (Fig. 17) and SYNC (Fig. 18):
Summary of Contents for 10H92873
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