KACO Powador XP500-XP550-HV TL outdoor - Manual (Page 77)

Page 78 Operating Instructions Powador XP500/550-OD-TL
P a r a m e t e r s
Figure 50: State Machine
Power derating is enabled or disabled by an output of state machine which is decided by 4 inputs. And while
the output of state machine is 1, a decreasing rate affects an output power.
A decreasing rate is calculated by multiplying factor K({Power Derating P Gain}) and a difference between refer-
ence temperature({Power Derating Reference Temperature}) and PEBB heatsink temperature}.
An output of state machine depends on the state in which state machine is running. A transfer between states
happens when defi ned conditions are satisfi ed. Basically, if {Power Derating Enable} is 0, the state is “Disable”.
And If {Power Derating Enable} is 1, transfer is done according to PEBB heatsink temperature.
Following examples show power derating by default parameter.
Descriptions for sections of Example of Power Derating are:
T1: Inverter produces energy and PEBB temperature rises.
T2: When PEBB temperature is higher than 90°C, power derating is activated. And inverter controls output
power according to expression, P(%) =
100 -( T
PEBB
-80)x2 until power derating is deactivated.
T3: Output power decrease and PEBB temperature drops. When PEBB temperature is lower than 70°C, power
derating is deactivated. And inverter doesn’t decrease output power.