Himoinsa CEC7 User Manual

(APPENDIX III) SYNCHRONIZATION| PAGE 50
* * * * FREQUENCY * * * *
à
1 . Ad j u s t m ent
[ 5 0 . 3 H z ]
2 . Test
q
3 . PID
Fig.3
Genset signal frequency
* * * * FREQUENCY * * * *
à
1 . Adj u s t m e n t [ 5 0 . 3 H z ]
0
2 . Test
q
3 . PID
Fig.4
Level:0- Average value / 1- Minimum value / 2- Maximum value
12.3.2. SYNCHRONIZATION COEFFICIENTS
The response of the CEC7 control unit depends on the Synchronization
coefcients (PID) both in terms of the adjustment of amplitude and the
adjustment of frequency. In order to adjust these coefcients to the response of
both the alternator and the engine, access the menus Maintenanceà
SynchronizationàAmplitudeàPID and MaintenanceàSynchronizationàFrequency
àPID. Selecting these menu, starts the automatic search of the appropriate
values to perform the Synchronization. To perform the coefcients search
process, the following is required:
• Stable motor.
• Stable network signal.
• Open genset contactor.
Once the PID option has been selected from the menu, the automatic search for
the values begins. The display will show the Synchronization coefcient values
and the deviation factor between genset and network (volts in voltage and ‰ in
frequency).
The frequency adjustment procedure is performed using the following steps:
1. Adjust the generator set frequency response to the signal required.
2. Connect the engine regulation plate to the Speed connector of the Second
Zero expansion.
3. Start the generator set in manual mode.
4. Disconnect the genset contactor.
5. Select the value 0 from the menu Maintenanceà
SynchronizationàFrequencyàAdjustment. The option which is ashing in the
Adjustment menu indicates that the genset is not stabilized or that the genset
contactor is active, hence impeding the procedure.
6. Adjust the Speed Offset multi-turn potentiometer of the Second Zero expansion
until the frequency value generated by the generator set is at the required level.
The genset frequency signal measured is displayed on the screen.
7. Select the value 1 from the menu MaintenanceàSynchronizationàFrequency
àAdjustment.
8. The genset frequency signal must be less selecting the value 1 from the menu
MaintenanceàSynchronizationàFrequencyàAdjustment than selecting the
value 0. In case that selection of the value 1 in said menu produces an increase
in the genset frecuency (relative to the frecuency for value 0), this indicates that
the engine speed regulation ratio is reversed; this ratio is xed via parameter 8
of the Second Zero table.
9. Adjust the Speed Gain multi-turn potentiometer of the Second Zero expansion
until the frequency value generated by the generator set is at the minimum level
permitted. The genset frequency signal measured is displayed on the screen.
10. Select the value 2 from the menu MaintenanceàSynchronizationàFrequencyà
Adjustment.
11. Check that the adjustment made to the Speed Gain multi-turn potentiometer has
achieved the maximum value of genset signal frequency required.

Himoinsa CEC7 Specifications

General

Brand	Himoinsa
Model	CEC7
Category	Control Unit
Language	English