Chapter 6 Characteristics; Overload Protection Characteristics - Mitsubishi Electric -MR-CV User Manual

6
CHARACTERISTICS
6.1

Overload protection characteristics

An electronic thermal is built into the converter unit to protect the converter unit from overloads.
[7E Overload 1] occurs when overload operation exceeds the electronic thermal protection curve shown in this section. [7F
Overload 2] occurs when operation continues above the rated speed and rated torque. Use the equipment within the area on
the left side of the graph.
Graph of overload protection characteristics
The table lists the converter units and corresponding graphs of overload protection characteristics.
Converter unit
MR-CV11K
MR-CV30K
MR-CV37K
MR-CV45K
MR-CV11K4
MR-CV30K4
MR-CV37K4
MR-CV45K4
MR-CV18K
MR-CV18K4
MR-CV55K
MR-CV55K4
MR-CV75K4
■Characteristic A
10000
1000
100
10
1
0.1
0 100
*1 A resistive force of 100 % indicates the continuous rating of the converter unit.
6 CHARACTERISTICS
64
6.1 Overload protection characteristics
200 300 400 500
*1
Load ratio [%]
Graph of overload protection characteristics
Characteristic A
Characteristic B
Characteristic C
Characteristic D
600