Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 257

10. CHARACTERISTICS
10.4 Cable flexing life
The flexing life of the cables is shown below. This graph calculated values. Since they are not guaranteed
values, provide a little allowance for these values.
1 10
5 10
1 10
5 10
1 10
5 10
1 10
5 10
1 10
5 10
1 10
10.5 Inrush currents at power-on of main circuit and control circuit
The following table indicates the inrush currents (reference data) that flow when the maximum permissible
voltage (main circuit power supply: 253VAC, control circuit power supply: 26.4VDC) is applied at the power
supply capacity of 2500kVA and the wiring length of 1m.
Servo amplifier
MR-JN-10A1/20A1
MR-JN-10A to 40A
Since large inrush currents flow in the main circuit power supply, always use molded-case circuit breakers and
magnetic contactors. (Refer to section 11.6.)
When a circuit protector is used for the main circuit power supply, it is recommended to use the inertia delay
type that will not be tripped by an inrush current.
Always use a circuit protector for the control circuit power supply. (Refer to section 11.11.)
8
7
7
6
6
5
5
4
4
3
3
4 7 10 20
Flexing radius [mm]
Main circuit power supply (L
55A (Attenuated to approx. 15A in 10ms)
130A (Attenuated to approx. 5A in 5ms)
a
a : Long flex life encoder cable
Long flex life motor power cable
Long flex life motor brake cable
b : Standard encoder cable
Standard motor power cable
Standard motor brake cable
b
40 70 100 200
Inrush currents (A
L )
1 2
10 - 6
- )
0 P
Control circuit power supply (+24V 0V)
25A (Attenuated to approx. 0A in 4 to 6ms)
25A (Attenuated to approx. 0A in 4 to 6ms)