Yaskawa Solectria Solar
DOCR-071070
Page 26 of 30
Table 4-7 Volt-Watt Modbus Addresses
MESSAGE
MODBUS ADDRESS
DATA TYPE
SCALE FACTOR
VOLT-WATT ENABLE/DISABLE
40997
uInt16
-
VOLT-WATT REFERENCE MODE
31653
uInt16
-
VOLT-WATT DELAY [S]
31409
Float32
-
VOLT-WATT
CURVE,
VOLT
PTS
[V%NOM]
41008-41026 (even)
uInt16
10
VOLT-WATT CURVE, WATT PTS
[W%MAX]
41009-41027 (odd)
Int16
10
4.5.3
Frequency-Watt configuration
If the Frequency-Watt feature is enabled, the inverters will first reduce the amount of active power that
they output, and then actively absorb the power from the grid (within the active power limit and the
upper voltage limit). This feature overrides the active power set point and is not meant to run constantly,
but rather as a supplementary function to help keep the power flow in the interconnection stable. The
Frequency-Watt-delay feature allows customers to coordinate the frequency response with other
frequency regulating assets within the same interconnection. Your local ISO can help you with the correct
settings. The following Modbus messages can be controlled by the PMC:
Table 4-8 Frequency-Watt Modbus Addresses
MESSAGE
MODBUS ADDRESS
DATA
TYPE
SCALE
FACTOR
FREQUENCY-WATT ENABLE/DISABLE
41063
uInt16
-
FREQUENCY-WATT REFERENCE MODE
41126
uInt16
-
FREQUENCY -WATT DELAY [S]
31401
Float32
-
FREQUENCY -WATT CURVE, HZ PTS [HZ%NOM]
41073-41091 (odd)
uInt16
10
FREQUENCY -WATT CURVE, WATT PTS
[W%MAX]
41074-41092 (even)
Int16
10
