SMA Sunny Boy Control - Manual (Page 79)

Sunny Boy Control
SMA Technologie AG
User Manual SUNBC-14:NE0206 75
For details on the pin assignment for the switching contact, refer to section 3.5.
Example of a water pump setup
[ SWITCH RELAY ]
‡Power-switch
…activated
Pon…
…………3.50kW Switching on if output above 3.5 kW
Poff…
…………3.50kW Switching off if output below 3.5 kW
Tolerance…
…………………0min Switching on as soon as power output exceeds Pon
Minimum Time…
…………………0min Switching off as soon as power output falls short of Poff
----------------
Time-switch…
…deactivated
On-time…
………00:00
Off-time…
………00:00
----------------
Default Switch
…Contact 2_1 Choice between “Contact 2_1” and “Contact 2_2”
Fig. 6.14: Water pump example
In this example, the water pump will be witched on as soon as (“Tolerance” = 0
minutes) the system power exceeds 3.5 kW (as set under “Pon”), and it will be
switched off as soon as the system power falls short of this value (as set under
“Poff”).