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2.2.5
Connection Sequence
The recommended connection sequence is listed below. The user should ensure that the
following sequence is met before connecting the system to the mains, a motor and a host
computer.
1. Connect 15V and 5V from power board to inverter board.
2. Connect filtered AC mains supply from power board to inverter board.
3. Connect PFC or half-bridge rectifier module output to DC-Link board.
Note: Before any connection to DC-Link board, verify that the system is not powered and it
is fully discharged (D1 off).
4. Connect DC-Link output to DC bus input on inverter board.
5. Connect the IDC-20A male to JTAG port (J3) on inverter board and connect the USB
cable of J-Link to host computer.
6. Connect the U/V/W phase terminal to three phase compressor.
(Please refer the figure 2-5. In the case of the compressor, U/V/W terminal connects to
the clockwise compressor terminal.)
7. Connect the AC mains supply to power board.
Note: Make sure that the computer or reference board is connected to isolated AC mains
supply before connecting the reference system with the J-link or host computer.
Figure 2- 2 Connection between inverter board and compressor
(For example, U is red line, V is black line, and W is blue line.)
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AN706-00042-1v0-E
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