Carlo Gavazzi Motor Controller Soft Start/Stop 3-Ph. Compressor, RSBD4855CVC

Carlo Gavazzi Motor Controller Soft Start/Stop 3-Phase Scroll Compressor, 2-Phase Control: 24VAC/DC & 110-400VAC, Operational: 220-480VAC, 55A AC-53b @40ºC, Din/Panel Mount, RS485 Output

RSBD and RSBT are easy to use softstarters for scroll compressors up to 95Amp nominal current. The units are equipped with a patented auto-adaptive algorithm that automatically adapts itself to the specific compressor it is controlling ensuring that an optimum inrush current reduction is achieved. RSBD is a 2-phase controlled and RSBT is a 3-phase controlled solution with integrated bypass relays for bypassing of the semiconductors after ramp-up. The unit is supplied inside housing and can be DIN or panel mounted (accessories included). RSB. Softstarters include also 2 changeover relays for bypass and alarm indication. The units have a maximum operating temperature of 60°C (with derating from 40°C). RSB..CVC versions are equipped with a Modbus RTU serial communication for start and stop and communication of relevant instantaneous variables that can be transmitted to a host control system.

General Characteristic

• Soft starting of 3-phase Scroll Compressors up to 95 Amp
• Patented auto-adaptive algorithm for optimum inrush current reduction (No user-settings required)
• Integrated bypass relays
• 2- (RSBD) and 3-phase (RSBT) controlled solutions
• Multi-voltage operation (220 – 480VAC, 50/60Hz)
• Rated operational current: 55, 70, 95AAC
• Phase sequence and undervoltage monitoring
• Overtemperature, Overcurrent, Locked Rotor protection
• Changeover relay outputs for bypass and alarm indication
• UL, cUL, CE, RoHS compliant
• Current balancing strategy (RSBD models)
• RS485 serial communication port (MODBUS-RTU) - optional