Mitsubishi Electric MR-J4-_GF, Instruction Manual

Page: 51 / 274

4. STARTUP
4 - 16
(1) Motor-less operation
Without a servo motor connected to the servo amplifier, signals are outputted and status is displayed as
if the servo motor is actually running in response to the master station. This operation can be used to
check the sequence of a master station (controller). Use this operation with the forced stop reset. Use
this operation with the servo amplifier connected to the master station (controller).
To terminate the motor-less operation, set "Disabled (_ _ _ 0)" of "Motor-less operation selection" in [Pr.
PC05]. The motor-less operation will be disabled from the next power-on.
(a) Load conditions
Load item Condition
Load torque 0
Load to motor inertia ratio [Pr. PB06 Load to motor inertia ratio/load to motor mass ratio]
(b) Alarms
The following alarms and warnings do not occur. However, the other alarms and warnings occur as
when the servo motor is connected.
[AL. 16 Encoder initial communication error 1]
[AL. 1E Encoder initial communication error 2]
[AL. 1F Encoder initial communication error 3]
[AL. 20 Encoder normal communication error 1]
[AL. 21 Encoder normal communication error 2]
[AL. 25 Absolute position erased]
[AL. 92 Battery cable disconnection warning]
[AL. 9F Battery warning]
(2) Operation procedure
1) Set the servo amplifier to the servo-off status.
2) Set [Pr. PC05] to "_ _ _ 1", turn SW1-1 "OFF (down)", and then turn SW1-2 "ON (up)".
1
ON
2
Turn SW1-1 "OFF (down)" and turn SW1-2 "ON (up)".
1
ON
2
3) Start the motor-less operation with the master station (controller).
The display shows the following screen.
The decimal point blinks.