3 Initial Setup and Start
SMA Solar Technology AG
20
STP60-JP-10-IA-en-11
Installation Manual
Figure 2.27 DC label
Protection class of PV modules
The inverter must only be operated with PV modules of
protection class II, compliant with IEC 61730, application
class A.
Only connect PV modules to the inverter. Other energy
sources are not allowed.
2.10 Closure
1. Close the cover of the inverter installation area. Fasten
the three front screws (see Section 5.4, page 34).
2. Turn on AC power.
3 Initial Setup and Start
3.1 User interface
The user interface comprises:
• Local display, for all inverter variants. The local display
shows status information of the inverter. It is not
possible to set up or configure the inverter via the
display. The "#" in the display explains the operation
modes.
• Local commissioning and service tool (LCS-Tool).
The LCS tool can be used for configuring one or more
inverters.
3.1.1 Operating modes
The inverter has five operation modes, indicated by LEDs.
Table 3.1 Operating modes
Off grid
(LEDs off)
#0-51
When no power has been fed into the AC grid for more
than 10 minutes, the inverter disconnects from the grid and
shuts down. User and communication interfaces remain
powered for communication purposes.
Connecting
(green LED flashing)
#52-53
Once the PV input voltage reaches the DC initial voltage,
the inverter goes into operation.
The inverter performs a series of internal self-tests, including
measurement of the resistance between the PV array and
ground. Meanwhile, it also monitors the grid parameters. If
the grid parameters are within the specifications during the
required period (depending on the grid code), the inverter
starts feeding into the utility grid.
PV modules generate a voltage when exposed to light.
Status
LEDs
LEDs
Off grid
Green
Red
Connecting
Green
Red
On grid
Green
Red
Internal inverter event
Green
Red
Fail safe
Green
Red
