EM600 High-Performance Vector Control Inverter User Manual EM600- 4R0- 3B AC 380V 3PH 4.0KW Figure 3-23 Wiring of Keypad Extension Line 3.5 Wiring Verification Verify the following items after wiring: Whether wiring is incorrect. Whether there are screws, connector plugs or wire fragments inside inverter. Whether screws are loosened. Whether bare wire on one terminal connects to oterminals. 45