General
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1
1.5
Commissioning
NOTE! Before you start the commissioning, read the safety instructions in the user manual of your
product.
To use the Island, Micro Grid, or Shaft generator operation, you need a licence key. The AFE mode is
available without a licence.
This application requires an NXP3 control board VB761 or newer.
The control place (P3.1) of the Micro Grid drive is Keypad as a default.
The basic I/O configuration of the Micro Grid drive consists of OPT-A1, OPT-A2, and OPT-D7 option
boards. The basic I/O configuration is described in Table 1.
OPT-D7 is required when the Micro Grid unit is needed to start with zero power to the grid. If grid
frequency is not monitored with OPT-D7, the unit may go generator side or directly to full power
because different reference frequency and grid frequency.
The GTC is utilised by using AFE hardware with special software. An external LC(L)-filter and
charging circuit is needed. This unit is selected when low harmonics are required. The principle
connection of AFE drive has been described in Figure 6.
The external 24 Vdc is recommended for control board(s). It enables the setting of parameters even
when the power unit itself is not powered. This is important also when software updates are made.
Some default I/O configuration of the application can cause unexpected DO operation. When the
control board is powered, the drive can give information from the status of the system if, for
example, the drive I/O is used for an overall system monitoring.
The external 24 Vdc is required for the drives in cases where the start command starts the control
board-controlled precharging operation.
1.5.1
Quick start instructions
1.
Connect the unit according to the Figure 6.
2.
Power up the control unit with 24 Vdc.
3.
Set the basic parameters (G2.1)
4.
Check that the digital input parameters (G2.4.2) have been set according to the connections.
5.
Change the control place according to the system requirements.
6.
Charge the unit.
1.5.2
In case of parallel AFE:
1.
Set P2.1.5 Parallel AFE to
Yes
. This will also set DC Drooping to 3.00% (Default).
