A20B-2902-0290 without fuses in the USA. Contact your local representative for suitable circuit breakers. • The drive provides motor overload protection. For the adjustments, refer to the firmware manual. • For drive overvoltage category, refer to page 96. For pollution degree, see page 97. CSA marking CSA marking pending. RCM marking RCM marking pending. Technical data 105 EAC marking EAC marking pending. Disclaimers Generic disclaimer The manufacturer shall have no obligation hereunder with respect to any product which (i) has been improperly repaired or altered; (ii) has been subjected to misuse, negligence or accident; (iii) has been used in a manner contrary to the Manufacturer's instructions; or (iv) has failed as a result of ordinary wear and tear. Cyber security disclaimer This product is designed to be connected to and to communicate information and data via a network interface. It is Customer's sole responsibility to provide and continuously ensure a secure connection between the product and Customer network or any other network (as the case may be). Customer shall establish and maintain any appropriate measures (such as but not limited to the installation of firewalls, application of authentication measures, encryption of data, installation of anti-virus programs, etc) to protect the product, the network, its system and the interface against any kind of security breaches, unauthorized access, interference, intrusion, leakage and/or theft of data or information. ABB and its affiliates are not liable for damages and/or losses related to such security breaches, any unauthorized access, interference, intrusion, leakage and/or theft of data or information. 106 Technical data Dimension drawings 107 10 Dimension drawings The dimension drawings of ACS380 drive frame sizes R0, R1, R2 and R3. The dimensions are in millimeters and inches. 108 Dimension drawings Frame R0 (230 V) Dimension drawings 109 Frame R0 (400 V) 110 Dimension drawings Frame R1 (230 V) Dimension drawings 111 Frame R1 (400 V) 112 Dimension drawings Frame R2 (230 V) Dimension drawings 113 Frame R2 (400 V) 114 Dimension drawings Frame R3 (400 V) Resistor braking 115 11 Resistor braking Contents of this chapter The chapter describes how to select the brake resistor and cables, protect the system, connect the brake resistor and enable resistor braking. Operation principle and hardware description The brake chopper handles the energy generated by a decelerating motor. The chopper connects the brake resistor to the intermediate DC circuit whenever the voltage in the circuit exceeds the limit defined by the control program. Energy consumption by the resistor losses lowers the voltage until the resistor can be disconnected. Selecting the brake resistor Drives have in built-in brake chopper as standard equipment. The brake resistor is selected using the table and equations presented in this section. 1. Determine the required maximum braking power PRmax for the application. PRmax must be smaller than PBRmax given in the table on page 116 for the used drive type. 2. Calculate resistance R with Equation 1. 3. Calculate energy ERpulse with Equation 2. 4. Select the resistor so that the following conditions are met: • The rated power of the resistor must be greater than or equal to PRmax. • Resistance R must be between Rmin and Rmax given in the table for the used drive type. • The resistor must be able to dissipate energy ERpulse during the braking cycle T. 116 Resist |
