Fronius IG-TL Serie Manual De Instrucciones página 66

0x9F - Set power The sign of the Q
reduction and under-excited synchronous machine. The inverter always acts like a generator regarding
reactive power the flow direction of the active energy:
(continued)
Sign of
Negative
Positive
Inverter-specific behaviour for Fronius IG Plus V and Fronius CL:
A maximum reactive power of approx. 2100 VAr can be made available per power stage
set.
Calculation of the maximum value: Number of power stage sets x 2100 VAr = max.
specified value.
Example: 15 power stage sets each with 2100 VAr results in a max. specified value of 15
x 2100 VAr = 31500 VAr.
Higher specified values are automatically limited to the maximum reactive power output
of the device.
The reactive power available for each feed-in operating point also depends on the
present effective power output due to the limited power factor. For this reason, the
reactive power specified value is only used as a maximum value when sufficient effecti-
ve power is being output and thus the power factor remains within the defined limits.
An inverter that receives the '0x9F - Set power reduction and reactive power' command
and whose network number is on the list
-
-
-
The sender can now determine which devices have successfully received the frame by
analysing the inverter number field:
Inverter number 0xFF = inverter has carried out the command
Inverter number not 0xFF = inverter has not carried out the command
specified value defines whether the inverter behaves like an over- or
abs
specified value
Q
abs
carries out the corresponding action
overwrites its network number with 0xFF
and forwards the frame
Meaning
over-excited
under-excited
60