16 Hardware description
Manual Energy Storage Inverter ESI-S
Table 3: User connections for ESI-S
Item User connections
Connection requirement
1
CT
connections
Not mandatory
2
Power cable connection to the supply
Mandatory
3
Programmable digital outputs (warnings…)
Not mandatory
4
Remote control contact connection or/and
local on/off buttons or/and
main/auxiliary settings control
Not mandatory
5
PQF-Link – Modbus RTU – Modbus TCP communication
connection
Not mandatory
6
Earth connections from the enclosure to installation earth Mandatory
7 Battery
connection
Mandatory
8 Voltage
measurement
Not mandatory
Mandatory connections are connections that must be present to make the inverter
operational. Connections that are not mandatory can be made to enhance the inverter’s
basic functionality.
For more information on cabling the user connections, please refer to
shows a typical ESI-S master inverter panel.
5
2
1
3
Figure 12: Example of a typical ESI-S master inverter panel
The input/output connections and protection description is given in
Table 4: Input/Output connections
Item
Input/Output
connections
1
CT connection terminals
2
Main power connection
3
Auxiliary fuse protection
4
ESI-Manager user interface with connection terminals for user I/O (e.g. alarm
contact) and communication interfaces
5
Battery connection
