RSGT Three phase AC motor soft starter Benefits • Easy to use. RSGT is equipped with a self-learning algorithm that automatically adjusts the start parameters to optimise the motor starts and stops. • Fast installation and set-up. Only 3 settings are required (FLC, ramp-up and ramp-down). • Compact dimensions. 12 - 25 Arms in 45mm wide housing, 32 - 55 Arms in 75mm wide housing, 70 - 90 Arms in 120mm housing. • Integrated protection. Diagnostic functions provide additional protection. RSGT is also equipped with an overload protection (Class 10). • Less stresses on motors. The control on all the 3-phases results in better current reduction and no current imbalance during motor start. • Torque control during ramp-down. Smoother deceleration of the load. • Load condition monitoring. The RSGT is equipped with a Modbus/RTU communication port (2-wire connection). • Guided model selection. Easy to use selection tool to select the appropriate soft starter model depending on the application type. Description RSGT is an extremely compact and easy to use 3-phase soft starter for AC induction motors rated up to 90 Arms. The starting parameters can be easily set-up through 3 selector switches. The integrated motor overload protection (Class 10) and Modbus communication result in a higher installation flexibility. Applications RSGT soft starters are the ideal solution for 3-phase fixed speed AC induction motor applications where there is the need to reduce the starting current and/or minimise stresses on the motor during start and stop. The RSGT offers a number of integrated diagnostic functions that can replace additional components inside the electrical panel. Typical applications include: compressors, pumps and fans. Main functions • • • • • • • Soft starting and soft stopping of AC motors Integrated electronic overload protection (Class 10) Wrong phase sequence detection Torque control during ramp-down Top of ramp and alarm relay indication Dry run detection for pumps Serial communication (Modbus) over RS485
Open the catalog to page 1References Order code RSGT Enter the code entering the corresponding option instead of Code Soft starter General purpose Three phase control 90 Arms 110 - 400 VAC (+10%, - 15%) control voltage (Uc) Supply voltage: internally supplied 24 VAC/DC (+10%, - 10%) control voltage (Uc) Supply voltage: internally supplied 24 VAC/DC (+10%, - 10%) control/supply voltage Supply voltage: externally supplied 100 - 240 VAC (+10%, - 15%) control/supply voltage Supply voltage: externally supplied Rated operational current @ 40 °C With integrated motor overload protection (Class 10) Without communication With...
Open the catalog to page 2Selection guide Operational voltage: 400 VAC Rated operational current (Ie) 12 Arms 16 Arms Operational voltage: 600 VAC Control/supply Control/supply voltage voltage 100 - 240 VAC 24 VAC / DC RSGT6012GGV10 RSGT6012FFV10 Further reading Information RSGT 45 mm instruction manual http://cga.pub/?6ca01b RSGT 75/120 mm instruction manual RSGT troubleshooting guide RSGT 45mm Monitor software Modbus communication protocol
Open the catalog to page 3Selection guide and typical application settings Category Fans Feeders Rotating machinery Scroll compressor Screw compressor Piston compressor Centrifugal compressor Hydraulic pump Centrifugal pump (start time <10sec) Centrifugal pump (start time >10sec) Piston pump Vacuum blowers Screw feeder Trip Class Note: when using the RSGT on high inertia loads (Trip Class 20, 30) ensure that enough time is left between starts to allow the RSGT to cool down. For Trip Class 20 and Class 30 applications we recommend the use of an external overload protection due to the higher FLC setting that is required...
Open the catalog to page 4Selection guide (220 - 400 VAC) Motor FLC [A] 1.8 • * Contact Carlo Gavazzi representative for further information. • Option “E0”: 110 - 400 VAC or option “F0”: 24 VAC/DC. Selection guide (480 - 600 VAC) Motor FLC [A] • * Contact Carlo Gavazzi representative for further information. • Option “GG”: 100 - 240 VAC or option “FF”: 24 VAC/DC. Caution: the actual motor Amps may be higher or lower than the average values listed above. We suggest to use the actual motor current as listed on the motor nameplate. Use this table as a guide only.
Open the catalog to page 5Carlo Gavazzi compatible components Purpose Component name/code PC interface cable (Isolated USB to TTL cable) Finger guards 6 pcs per box For RSGT 75/120mm models only Rated voltage: 12 VDC Power consumption: 0.6 W
Open the catalog to page 6Ramp-up time selector Sets the desired motor starting time. Ramp-down time selector Sets the desired motor stopping time. Alarm. Indicates that the RSGT is in alarm. The number of flashes indicates the alarm type. Ramping/bypass. Indicates whether RSGT is in ramping (flashing) or bypass (fully ON). Note: Ramping (no HP): 2 Hz flashing. Ramping (with HP): 10 Hz flashing. Scan to link to troubleshooting guide. Sets the motor full load current (FLC). The FLC setting is used by the RSGT for the overload protection and for the maximum current allowed during motor start. Simulate overload alarm (press...
Open the catalog to page 7Mode of operation The RSGT series of soft starters works on two distinct self-learning algorithms depending on the ramp-up time settings. Ramp-up Ramp-down 1 to 20 seconds (for RSGT 45mm) 1 to 30 seconds (for RSGT 75/120mm) 0 seconds Mode of operation • When the ramp-up selector is in position 1 or 2, the RSGT will follow a self-learning current limit algorithm. • As soon as A1-A2 (or ST for RSGT60 models) control voltage signal is applied, the RSGT will start to ramp-up the motor. • At the very first start the current limit will be 4 x FLC setting. • In the subsequent starts, the RSGT will automatically...
Open the catalog to page 8Features General RSGT 45 mm Protection grade Overvoltage category
Open the catalog to page 9Earth screw
Open the catalog to page 10Earth screw
Open the catalog to page 11Power Supply Operational voltage range Supply current at Idle Blocking voltage Rated insulation voltage Dielectric withstand voltage: Supply to input Supply to heatsink Integrated varistor Control voltage range (Uc) Maximum pick-up voltage Minimum drop out voltage Supply voltage range (Us) Rated insulation voltage (Ui) Dielectric strength: Dielectric withstand voltage Rated impulse withstand voltage Control input current Input to output response time (Mains supply already present) Input to output response time (Mains supply applied with control) Integrated varistor Note 1: for the Canadian application,...
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