Frequency-Watt Configuration - YASKAWA ACS-500 User Manual

Table 4-7 Volt-Watt Modbus Addresses
MESSAGE
VOLT-WATT ENABLE/DISABLE
VOLT-WATT REFERENCE MODE
VOLT-WATT DELAY [S]
VOLT-WATT CURVE,
[V%NOM]
VOLT-WATT CURVE,
[W%MAX]

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
FREQUENCY-WATT ENABLE/DISABLE
FREQUENCY-WATT REFERENCE MODE
FREQUENCY -WATT DELAY [S]
FREQUENCY -WATT CURVE, HZ PTS [HZ%NOM]
FREQUENCY -WATT
[W%MAX]
Yaskawa Solectria Solar
MODBUS ADDRESS
VOLT PTS
41008-41026 (even)
WATT PTS
41009-41027 (odd)
CURVE, WATT PTS
DATA TYPE
40997 uInt16
31653 uInt16
31409 Float32
uInt16
MODBUS ADDRESS
41063
41126
31401
41073-41091 (odd)
41074-41092 (even)
DOCR-071070
SCALE FACTOR
-
-
-
10
Int16 10
DATA
TYPE FACTOR
uInt16
uInt16
Float32
uInt16
Int16
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SCALE
-
-
-
10
10