RC880 AMP | Alldatasheet
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When using a regulated power supply for a drive, it is very likely that regenerative energy will cause problems when rapidly decelerating a load from a high speed. Under these conditions, the kinetic energy of that load is transferred back through the drive electronics to the power supply connection. This increase in voltage can trip the overvoltage protection of a switching power supply, causing it to shut down. The RC880 regeneration clamp is designed to solve this problem by ab- sorbing the regenerated energy in a capacitor and shunting the excess energy through a power resistor. Knowing the inertia of the system, along with the change in speed and the time required to decrease speed, will allow for the regenerated power to be calculated. If in doubt, it is a good idea to use the RC880 for test purposes in the first instal- lation. If the “regen” LED on the RC880 never flashes, you may not need the clamp. When using a regulated power supply for a drive, it is very rapidly decelerating a load from a high speed. Under these conditions, the kinetic energy of that load is transferred back through the drive electronics to the power supply connection. This increase in voltage can trip the overvoltage protection of a switching power supply, causing it to shut down. The RC880 regeneration clamp is designed to solve this problem by ab sorbing the regenerated energy in a capacitor and shunting the Knowing the inertia of the system, along with the change in speed and the time required to decrease speed, will allow for the regenerated power to be calculated. If in doubt, it is a good idea to use the RC880 for test purposes in the first instal lation. If the “regen” LED on the RC880 never flashes, you may 925-0018 Rev A RC880RC880 Data Sheet Electrical Specifications Parameter Min. Typ. Max. Unit Power Supply voltage - - 80 VDC Input Current (RMS) - - 15 Amps Output Current (RMS) 7.0(max)/Channel, but no more than 15(max) total Amps Clamp circuit activation Voltage 1 1.3 1.6 V (Vout-Vin) Clamp circuit inactivation Volt - age 0.3 0.5 0.7 V (Vout-Vin) Capacitance - 3000 -- µF Resistance 9.9 10 10.1 Ω Continuous Power Dissipation - 50 -- W Peak Power Dissipation - 800 -- W Environmental Specifications Heat Sinking Method Natural cooling or fan-forced cooling Surrounding Air Conditions Avoid dust, oily mist and corrosive air Operating Temperature 0 - 40°C (32 - 104°F) Maximum Ambient Humidity 90% non-condensing Shock 5.9m/s² maximum Storage Temperature -10 - 70°C (14 - 158°F) LED Status The RC880 has two LEDs to indicate status. Power is ON when the green LED is solid. The red LED indicates clamp (or shunt) circuit activation. Sht 1 of 2
Connect the power supply “V+” terminal to the RC880 terminal labeled “Vin+” and the power supply “V-” terminal to the RC880 terminal labeled “Vin-”. Then, connect the RC880 terminal labeled “Vout+” to the drive terminal “V+” and the RC880 terminal labeled “Vout-” to the drive terminal “V-”. The RC880 has a maximum of 3 channels to allow for connecting up to 3 drives. Use AWG18 or AWG20 wires for connection. Connections If you have any questions or comments, please call Applied Motion Products Customer Support: (800) 525-1609, or visit us online at www.applied-motion.com. 404 Westridge Dr. Watsonville, CA 95076 Tel: 800-525-1609 Fax: 831-761 -6544 www.applied-motion.com 925-0018 Rev A RC880 Data Sheet BE CAREFUL NOT TO REVERSE THE WIRES. A REVERSE CONNECTION WILL DESTROY YOUR DRIVE. Sht 2 of 2