13.1.2 Stop
The inverter is switched off.
Stop
,
Fast stop
or
Remote shutdown active
will appear on the touch display. If the key
switch is set to
Start
, the inverter switches to the operating state "Grid monitoring".
13.1.3 Grid Monitoring
13.1.3.1 Monitoring the Grid Voltage
In the operating state "Grid monitoring",
Waiting for valid AC grid
appears on the touch display. The grid limits are
monitored continuously from now on. If no grid error occurs during the grid monitoring time, the AC contactor closes
and the inverter switches to the operating state "Grid monitoring time reached". If the grid limits are exceeded during
the monitoring time, the inverter will restart "Grid monitoring".
You can specify the thresholds and the delay time manually. For voltage monitoring, you can set two limits for
overvoltage and two limits for undervoltage. If the grid voltage increases above the value defined in the parameter
VCtlhhLim
or
VCtlhLim
, the inverter waits for the time defined in the parameter
VCtlhhLimTm
or
VCtlhLimTm
and
disconnects from the utility grid.
Figure 59: Temporal inverter behavior when the grid limits are exceeded
Position
Parameter
Description
A
VCtlhhLimTm
Delay time for grid limit level 2
B
VCtlhLimTm
Delay time for grid limit level 1
C
‒
Startup/MPP load operation
D
‒
Grid monitoring
E
‒
Disturbance
1
VCtlhhLim
Grid voltage limit level 2
2
VCtlhLim
Grid voltage limit level 1
3
‒
Connection limit, maximum nominal voltage deviation
13 Function Description
SMA Solar Technology AG
System Manual
MVPS22JP-SH-en-11
180
Summary of Contents for 1000-1SC
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