IMPORTANT: “Power supply unit 1” and “Power supply unit 2” of serial ports CN4 and CN3 stand for:
CN4 – Power supply unit 1: The first power supply unit in the chain (FIRST Power Supply 1), set up as the
Master (maximum number: 3 cascade-connected power supply units for Sizes S80-S90)
CN3 – Power supply unit 2: The first power supply unit in the second chain for sizes greater than S90.
The configuration of this inverter will be the same as the FIRST Power supply 1 set up as the Master.
2.6.3. CONFIGURATION FOR ES887
Make sure that the switches and the jumpers on the ES887 board are properly set up: