8 Commissioning
SMA Solar Technology AG
40
REDUCERBOX-BA-en-16
User Manual
8.3 Configuring Operating Modes
The four digital inputs of the Power Reducer Box (K1, K2, K3, K4) can accept up to 16 different input
statuses. In consultation with the responsible network operator, each input status can be assigned a
different operating mode.
When the Power Reducer Box receives an instruction from the network operator, the inputs of the
Power Reducer Box take on a defined status. If the Power Reducer Box evaluates this input status as
valid, it switches to the operating mode that the input status was assigned with.
The Power Reducer Box evaluates an input status as valid under the following requirements:
• The input status is configured, i.e. the input status is assigned with an operating mode and the
operating mode is configured.
• The input status is activated.
The following operating modes can be configured via the user interface:
Simple operating modes
• "
Effective power control
"
• "
Reactive power setpoint
"
• "
Cos phi setpoint
"
Combined operating modes
• "
Active power limitation and reactive power setpoint
"
• "
Active power limitation and Cos phi setpoint
"
Standard factory configuration:
Requirements for configuring operating modes
• Only trained electrically skilled persons may configure the operating modes.
• Only configure the operating modes in consultation with the responsible network
operator.
• Do not configure operating modes if an active power limitation, reactive power setpoint,
cos phi setpoint or a combined setpoint is currently being implemented.
Input
Operating mode "Effective Power Control" Meaning
K1
0%
No active power
K2
30%
Maximum active power of 30%
K3
60%
Maximum active power of 60%
K4
100%
Full active power
