Control And Monitoring Interfaces; Operational Description - ABB PRO-33.0-TL Service Manual

14 Program features

Control and monitoring interfaces

In basic setup the operation of PRO-33.0-TL inverter does not require any user actions.
Once the inverter is commissioned, automatic functions start and stop the inverter based
on measurements.
In some cases the inverter requires monitoring and additional control. You can control and
monitor the inverter locally from the control unit and remotely through the fieldbus
interface.
The control unit operation and menu structure are described in the PRO-33.0-TL Product
manual (3AUA0000123261 [English]).

Operational description

PRO-33.0.-TL inverter operation follows the state machine described below.
•
MPPT is the normal operational state during power generation.
•
If a power limitation is active, the inverter is in the Limited state while the inverter
produces energy to the grid.
•
When the DC power level from panels is low, the inverter is in the Sleep or Standby
state depending on the night mode settings (parameter
•
Connection tests is a state the inverter goes through every time it connects to the grid
and performs tests for DC voltage and internal protection devices.
•
If a fault occurs, the inverter moves to the Standby state and waits for a reset
command (manual or autoreset).
Sleep
The conditions for state transitions are as follows:
1 VDC > ~300 V
2 Inverter enabled (parameter
AND country code set
AND grid stable
AND VDC > VDC
AND VDC < VDC
AND no faults
3 VDC > VDC
start
AND ground impedance ok
AND grid relay ok
4 Available power is greater than the inverter's power limit (parameter
130.01 Limit word
P < P
lim act
Standby
189.01 Inverter
start
max
1)
189.07 Night
Connection
tests
operation)
mode).
MPPT
Limited