Mitsubishi Electronics MR-J2S- CL specifications 2Startup procedure, Operation

4. OPERATION

(2)Startup procedure

(a)Power on

1)Switch off the servo-on (SON).

2)When main circuit power/control circuit power is switched on, "PoS" (Current position) appears on the servo amplifier display.

In the absolute position detection system, first power-on results in the absolute position lost (AL.25) alarm and the servo system cannot be switched on. This is not a failure and takes place due to the uncharged capacitor in the encoder.

The alarm can be deactivated by keeping power on for a few minutes in the alarm status and then switching power off once and on again.

Also in the absolute position detection system, if power is switched on at the servo motor speed of 500r/min or higher, position mismatch may occur due to external force or the like. Power must therefore be switched on when the servo motor is at a stop.

(b)Test operation

Using jog operation in the "test operation mode" of the Servo Configuration Software, make sure that the servo motor operates. (Refer to Section 6.7.1, 7.8.2)

(c)Parameter setting

Set the parameters according to the structure and specifications of the machine. Refer to Chapter 5 for the parameter definitions and to Sections 6.4 and 7.6 for the setting method.

Parameter	Name	Setting		Description
		20
No.0	Command system, regenerative			Absolute value command system.
	brake option selection			MR-RB032 regenerative brake option
				is used.
		10
				When forward rotation start (ST1) is
				valid, address is incremented in CCW
No.1	Feeding function selection			direction.
				Since command resolution is 10 times,
				feed length multiplication factor of 10
				times is selected.
No.2	Function selection 1	1
				Absolute position detection system.
No.4	Electronic gear numerator (CMX)	8192	From calculation result of formula (4.1)
No.5	Electronic gear denominator (CDV)	5000	From calculation result of formula (4.1)

After setting the above parameters, switch power off once. Then switch power on again to make the set parameter values valid.

(d)Program setting

Set the program according to the operation pattern. Refer to Section 4.2 for the program definitions and to Sections 4.2 and 6.5 for the setting method.

Program		Description
SPN (2500)	Speed (Motor speed)	2500 [r/min]
STA (200)	Acceleration time constant	200 [ms]
STB (300)	Deceleration time constant	300 [ms]
MOV (20000)	Absolute move command	20000 [ 10STM m]
STOP	Program end

(e)Servo-on

Switch the servo-on in the following procedure:

1)Switch on main circuit/control circuit power.

2)Switch on the servo-on (SON).

When placed in the servo-on status, the servo amplifier is ready to operate and the servo motor is locked. By using the sequence in the diagnostic mode in Section 7.3, the ready status can be shown on the servo amplifier display. In the operation-ready status, the following screen appears.

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