SMA Sunny Boy Series - Operating Mode: Fan Control; Operating Mode: Control via Communication

SMA Solar Technology AG Multifunction Relay
Technical Description ZusFunktNG-TB-en-25 15
Parameter Setting via Bluetooth
3.3.4 Operating Mode: Fan Control
In this operating mode, the fan is automatically activated if the device temperature is 5°C below the
temperature that trips derating. The fan is switched off again once the temperature falls 10°C below
the temperature limiting value. You do not need to set any parameters other than the operating mode.
3.3.5 Operating Mode: Control via Communication
In this operating mode you can switch the relay via the communication interface of the inverter.
Parameter Setting via RS485
Parameter Setting via Bluetooth
Name Description Range Default
value
Minimum On power for
MFR self-consumption
Minimum start-up power, tripping
level for self-consumption function
100 W to nominal
power
1,500 W
Minimum power On time,
MFR self-consumption
Minimum time for which the minimum
start-up power must be fed in for the
relay to switch
0 min to 1,440 min 30 min
Minimum On time for MFR
self-consumption
Minimum duration for which the
relay remains switched on
1 min to 1,440 min 120 min
Name Description Value Explanation Default
value
MltComCtl.Sw Status of the
multifunction relay in the
operating mode
"Control via
communication"
On Relay closed,
function active
Off
Off Relay open, function
inactive
Name Description Value Explanation Default
value
Status of the multifunction relay
with control via communication
Status of the
multifunction relay in the
operating mode
"Control via
communication"
On Relay closed,
function active
Off
Off Relay open, function
inactive