Chapter 3 - Power Connections Line Voltage Ratings The ACS 300 product line includes models for use on 200 to 240 V and models for use on 380 to 480 V supplies. Tables 3-1 and 3-2 list the available models. WARNING! NEVER connect voltage higher than 240 V to the input power terminals of the 200 to 240 V model ACS 300 drives. Note! The Factory setting of the 400 V series ACS 300 supply voltage is 480 V. If your voltage is much lower than 480 V, for example 380 V or 400 V, you may get an undervoltage fault message when first using the ACS 300. After connecting the input power, change the value to correspond to the supply voltage. Press the Start/Stop key to reset the fault message.
Power Wiring Requirements Power wiring includes input power wiring, motor wiring, ground- ing connections and dynamic braking circuit wiring (optional). Table 3-1 and Table 3-2 provide wire size and input line fuse recommendation. Power wire insulation must be rated 60 ° C for use in ambient temperatures up to 45 ° C or 75 ° C for use in ambient temperatures between 45 ° C and 50 ° C. To gain access to the input power, motor and control terminals, remove the front cover of the unit by loosening the two screws at the bottom. Figure 3-1 shows the locations of the power con- nection terminals.
Cable clamps that are provided for use with shielded power cables can be removed if shielded power cables are not used. Refer to Appendix A - Product Conformity in EEA for informa- tion regarding the installation of the ACS 300 in conformance with the requirements of the European Economic Area includ- ing recommendations regarding the use of shielded power cables to suppress RFI emissions. ACS 300 User’s Manual 15