RELIANCE 0-51829 Channel output module

Overload protection characteristics An electronic thermal is built in the servo amplifier to protect the servo motor, servo amplifier and servo motor power wires from overloads. [AL. 50 Overload 1] occurs if overload operation performed is above the electronic thermal protection curve shown in fig. 4.1. [AL. 51 Overload 2] occurs if the maximum current is applied continuously for several seconds due to machine collision, etc. Use the equipment on the left-side area of the continuous or broken line in the graph.

For the system 

where the unbalanced torque occurs, such as a vertical axis system, it is recommended that the unbalanced torque of the machine be kept at 70% or less of the motor's rated torque. This servo amplifier has servo motor overload protective function. (The servo motor overload current (full load current) is set on the basis of 115% rated current of the servo amplifier.) The following table shows combinations of each servo motor and graph of overload protection characteristics.

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