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SECTION 4 |
b) Parameter "SYNCHRONIZATION" set at Option 1= Coarse
This setting is selected for EVO-1212F/1212F-HW/1224F/1224F-HW/4248SP if the AC input source
is a Generator. As compared to very stable frequency of Grid / Inverter Generator, the frequency of
a Generator may vary considerably depending upon the performance of its Speed Governor that
compensates for the drop in RPM / frequency when electrical load is switched on / increased or,
rise in RPM / frequency when electrical load is decreased /switched off. Hence, if synchronization
sensitivity is set at "0= Fine" as in Section 4.5.2.8 (a) above, it may take very long for the Inverter
Section to synchronize with the Generator or, may not synchronize at all. Under this option, the
frequency and phase of the Inverter Section are synchronized with the Generator differently as
follows:
i.
ii. Then, the phase of the Inverter voltage relative to the phase of the Generator voltage is
4.5.2.8.1 Programming Steps for Parameter "SYNCHRONIZATION"
(Only for EVO-1212F/1212F-HW/1224F/1224F-HW/4248SP)
Any Operating Mode Screen from
Fig 3.1 to 3.8
E V O - 1 2 1 2 F
I n v e r t i n g
A C
o u t p u t :
1 2 0 . 0 V
< 0 . 1 0 A
6 0 . 0 0 H z
[Above screen is Screen 1 of Fig 3.2(a)]
4.5.2.9 SYNC GRID (Table 4.6, Parameter Setup Screen No. 8 under Column 2 for EVO-2212/ 2212E / 3012 / 3012E /
2224 / 2224E / 4024 / 4024E)
NOTE: Parameter "SYNC GRID" is NOT available for EVO-1212F/1212F-HW/1224F/1224F-HW/4248SP.
In EVO-2212/ 2212E / 3012 / 3012E / 2224 / 2224E / 4024 / 4024E, the frequency and phase of the Inverter Section are
always kept synchronized with the AC input source connected to terminals marked "GRID" (4,5,6 in Fig 2.3 in Owner's
Manuals for (i) EVO-2212/3012/2224/4024 and (ii) EVO-2212E/3012E/2224E/4024E). This facilitates faster and safer
transfer of power between the Inverter Section and the AC input source.
NOTE: For supplementary details on synchronized transfer of AC power, please refer to Section 4.5.4 to 4.5.7 of
Owner's Manuals for (i) EVO-2212/3012/2224/4024 and (ii) EVO-2212E/3012E/2224E/4024E
Parameter Setup
First, the frequency of the Inverter Section is NOT tracked at 0.1Hz per cycle as in Option "0=
Fine" [See Section 4.5.2.8(a) above] but is made equal to the Generator frequency at zero
crossing of the Inverter voltage.
tracked by 1º per cycle. When the phase of the Inverter Section is within ± 10.5º of the
Generator input voltage waveform, the Transfer Relay is activated to transfer the AC load
from the Generator to the Inverter Section at zero crossing of the voltage waveform.
Enter Key
S e l e c t
G r o u p
*
C H A R G E
C U R V E
ð
S e l e c t
P a r a m e t e r
I N P U T
S E T T I N G
*
S Y N C H R O N I Z A T I O N
0 =
F i n e
Down Key x 1 time
S e l e c t
P a r a m e t e r
*
I N P U T
S E T T I N G
ð
Enter Key
P a s s w o r d
k e y
0 0 0 0
ð
Password 8052
See Section 4.3.1
Enter Key
S e l e c t
P a r a m e t e r
I N P U T
S E T T I N G
ð
*
D E F A U L T
0 = 6 0 H z
Enter Key
S e l e c t
P a r a m e t e r
i n
I N P U T
S E T T I N G
ð
*
S Y N C H R O N I Z A T I O N
0 =
F i n e
For programmable options, see Table 4.6,
Parameter Setup Screen No. 7 under
Column 1 for EVO-1212F/1212F-
HW/1224F/1224F-HW/4248SP
SAMLEX AMERICA INC. | 83
Down Key x 6 times
ð
F R E Q
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