SAMLEX AMERICA INC. | 83
SECTION 4 |
Parameter Setup
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. 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.
ii. Then, the phase of the Inverter voltage relative to the phase of the Generator voltage is
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.
4.5.2.8.1 Programming Steps for Parameter “SYNCHRONIZATION”
(Only for EVO-1212F/1212F-HW/1224F/1224F-HW/4248SP)
ð
ð
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
Enter Key
Down Key x 6 times
Any Operating Mode Screen from
Fig 3.1 to 3.8
[Above screen is Screen 1 of Fig 3.2(a)]
Password 8052
See Section 4.3.1
For programmable options, see Table 4.6,
Parameter Setup Screen No. 7 under
Column 1 for EVO-1212F/1212F-
HW/1224F/1224F-HW/4248SP
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
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
*
D E F A U L T
F R E Q
0 = 6 0 H z
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
Enter Key
P a s s w o r d
k e y
i n
0 0 0 0
ð
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
*
S Y N C H R O N I Z A T I O N
0 =
F i n e
ð
Enter Key
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
Содержание EVO-RC-PLUS
Страница 127: ...SAMLEX AMERICA INC 127 NOTES ...
