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9 THE PHYSICAL WIRING DIAGRAM
Appendix
：
1. B503DSL 2001
，
2002
，
2003 Wiring Diagram as below shown
The notes below should be considered for the AC debug
Power On Sequencing:
Disconnect Q2 firstly, and then wait at least 5 minuets until controller discharge (or
digital LED and all indicators extinguish ), then close Q1. Otherwise, will cause the
damage of controller.
Notice
：
When need to transform the power supply mode from power frequency to photovoltaic
cell; you only need to turn off “Q1”firstly and then close “Q2”.
