7. Normal operation
7. Normal operation
To set both modes (Volt-watt in high priority)
Step 1: Select and set Volt-var mode at first.
Step 2: Enter "Working Mode" again and select and set Volt-watt mode then.
Step 3: To check the priority, a new mode will appear as "V-P & V-Q" which
indicates (P) Volt-watt is in high priority.
Figure 7.37 Work Mode
YES=<ENT> NO=<ESC>
Work Mode
：
V-P & V-Q
To reset dual-mode or exit the dual-mode situation
Step 1: Select "Null" mode at first.
Step 2: Enter "Working Mode" again. Redo above dual-mode setting steps to
reset OR set other modes to exit dual-mode situation.
NOTE
To check the Volt-watt and Volt-var priority, simply enter the working modes.
V-Q&V-P indicates Volt-Var First V-P&V-Q indicates Volt-Watt First
Figure 7.38 Power Rate Limit
Power Rate:016%
RateP_Sts-US:STOP
Over frequency load shedding Fstart range 60~62Hz, default setting 60.2Hz
Fstop can set the scope: 61-64Hz, the default setting 62Hz
.
Press the Enter key to select the mode or frequency
.
Press Up
/
Down to set. Press ESC to save the settings.
Figure 7.40 Freq
-
Watt
characteristic
f min
f nom
f start
f max
f stop
100
%
of
Available
Power
0
Grid
Frequency
7.5.8.3 Freq Derate Set
There are 5 derate modes in this menu. When operating under standard UL-1741 limits,
modes 00 to 03 are disabled. Mode 04 is used for UL1741SA frequency derating setting.
Mode 08 is used for RULE21 Freq-watt setting. This sets the f start and f stop point.
Mode 04 :
Figure 7.39 Freq Derate Set
Derate
Mode
:
04
OV
-
F
-
Start
:
60
.
20Hz
7.5.8.2 Power Rate Limit
This function is used for change Power Ramp-up rate. When inverter start up or input string
MPPT changes, inverter power ramp-up rate is limited in this menu.
The default setting is stop
(disable).
The setting range from 10% to 600%, means inverter power change rate per minute.
Values are not allowed to change. If they are set, they may not conform to the UL1741SA
standard
.
This setting is applicable when UL Standards are selected.
.51.
.50.
