User manual

n The phase shift can be set over a range of 0.95 (overexcitation) through 1.00 (no phase shift) to

0.95 (underexcitation).

n The type of phase shift is shown in the graph using arrow symbols defined as follows (defined

from the point of view of the inverter):

Overexcitation, inductive

Underexcitation, capacitive

n The 3 characteristic curves available for selection have the following properties:

Default char. curve: pre-defined according to the selected country (example in Fig. left).

Char. curve φ = 1: pre-defined with cos φ = constantly 1.00. This characteristic curve must

be selected if no reactive power control is to be performed on the device.

Enter char. curve: The number of nodes and their x/y values can be configured. Excep-

tions: The first node is always at x (P %) = 0 %, the last always at x (P %) = 100 %.

All parameters

Service technicians can use this menu item for changing additional MSD parameters.

3.4 Cooling

The internal temperature control system prevents excessive operating temperatures. When the

internal temperature is too high, the inverter adjusts the power consumption from the PV genera-

tors to reduce the heat dissipation and operating temperature.

The inverter is convection cooled via fins on the front and rear side. A maintenance-free fan circu-

lates the heat within the closed housing evenly over the entire surface of the housing.

3.5 Grid monitoring

The inverter constantly monitors the mains grid parameters while feeding the grid. If the grid devi-

ates from the legally prescribed specifications then the inverter automatically switches off. When the

grid conforms to the legally prescribed specifications then the inverter automatically switches on

again.

3.6 Data communication

The device has the following communication interfaces:

n 1x RJ45 socket (Ethernet for TCP/IP network) for communication, e. g. with a central data server

n 2x RJ45 sockets (RS485 bus) for communication with external devices, e. g. a data logger

n 1x RJ10 socket (Modbus RTU) for communication e. g. with an external energy counter

3.6.1 Data

The inverter can transmit a wide range of data to other devices. Some of this data is shown on the

display and certain data is stored in the internal memory (EEPROM) as described below.

747.431 | Z09.3 | 2017-09-05