EM600 High-Performance Vector Control Inverter User Manual 3.2.6.2 Never Connect Power Supply Cable to Output Terminals Never connect power supply cable to output terminals. If output terminals are connected to power supply, internal parts of inverter would be damaged. 3.2.6.3 Never Short-Circuit or Ground Output Terminals Never touch output terminals with bare hands or connect output cable to inverter housing, so as to avoid electric shock or short circuit. In addition, do not short-circuit output cable. 3.2.6.4 Never Use an Phase-Shifting Capacitor Never connect a phase-shifting electrolytic capacitor or an LC/RC filter to output circuit so as to prevent inverter from being damaged.
3.2.6.5 Never Use Electromagnetic Switch Do not connect a solenoid switch or an electromagnetic contactor to output circuit. Otherwise, it will trigger overcurrent or overvoltage protection or damage internal parts of inverter. To set an electromagnetic contactor for switching grid frequency power supply, stop inverter and motor at first. 3.2.6.6 Noise Filter Installation at Output Side Connecting a noise filter to output side of inverter can reduce inductive interference and radio interference. Inductive interference: Signal line contains noises caused by electromagnetic induction, thus resulting in incorrect action of control devices. Radio interference:
High-frequency electromagnetic waves transmitted by inverter and cable will cause radio devices nearby to make noises while receiving signal. Noise filter is installed on the output side (as shown in Figure 3–8). MCCB IM Conducted Interference Control Radio Device Figure 3-8 Noise Filter Installation on the Output Side Device 3.2.6.7 Countermeasures Against Inductive Interference In addition to installing noise filter, wiring all output cable into grounded metal pip to suppress inductive interference on the output side. When output cable is over 30 cm away from signal line, inductive interference decreases substantially (Figure 3–9).
MCCB Metal Pipe 金属管 EM 600 变频器 IM EM600 Inverter Over 30cm 30cm Signal Line 信号线 Control Device Figure 3-9 Countermeasures Against Inductive Interference 34 EEMM66000 0 Inverter Noise Filter Signal Line