Program features 43
Temperature based active power limitation
The inverter may limit the active power to limit the input DC current from the PV arrays.
The limit for the DC current is dependent on the measured temperatures. If the active
power is limited by the temperature based limitation, a status bit is set in the limitation
status parameter 130.01 Limit word 1. Also, a corresponding status bit is set in parameter
130.05 Limit word 5 defining the temperature measurement that is the source of the
limitation. If the DC input current measurement option is available and enabled, also the
power section of which input DC current is limited is shown in parameter 130.05 Limit word
5.
Settings
130.01 Limit word 1, bit14
130.05 Limit word 5, bit0...8
Temperature based operation inhibits
Inverter operation is inhibited if the ambient temperature exceeds the set maximum
operational ambient temperature or is below the minimum operational ambient
temperature. A corresponding status bit is set in parameter 173.05 Internal inverter
inhibitors 1, when an inhibit is active. An inhibit bit is automatically removed when the
ambient temperature returns within operational limits.
If the power section(s) AC and/or DC cabinet temperature(s) is below the set minimum
operational power section temperature, grid connection is inhibited. A status bit is set in
parameter 173.05 when an inhibit is active. An inhibit bit is automatically removed when
the temperature(s) returns above the operational limit.
Settings
173.05 Internal inverter inhibitors 1, bit4...6
If the power section(s) AC and/or DC cabinet temperature(s) is below the set minimum
operational power section temperature, grid connection is inhibited. A status bit is set in
parameter 173.05 when an inhibit is active. An inhibit bit is automatically removed when
the temperature(s) returns above the operational limit.
Fan control
The fans of the inverter are controlled based on the measured temperatures and the
inverter state. The rotation speed of the main air channel fans for each power section can
be read from parameters:
• 202.46 M1 - main channel fan 1...202.49 M1 - main channel fan 4
• 202.50 M2 - main channel fan 1...202.53 M2 - main channel fan 4
The rotation speed of the LCL fans of each power section can be read from parameters:
• 202.62 M1 - LCL fan 1 and 202.63 M1 - LCL fan 2
• 202.64 M2 - LCL fan 1 and 202.65 M2 - LCL fan 2
The failure status of the main LCL fans can be read from parameter 202.71 LCL fans fail
status, where a corresponding fail status bit is set when a fan failure is detected.
The failure status of the power section(s) AC and DC cabinet fans can be read from
parameter 202.72 Chained feedback fans fail status.
To Next Page
Loading...
Need help?
General