12. WHEN USING WITH A GENERAL-PURPOSE INTERFACE
12 - 76
No. Start-up sequence
Fault
Investigation
Possible cause
Reference
5
Gain adjustment
Rotation ripples (speed
fluctuations) are large
at low speed.
Make gain adjustment in the
following procedure.
1. Increase the auto tuning
response level.
2. Repeat acceleration and
deceleration several times to
complete auto tuning.
Gain adjustment fault
MR-JE-_C
Chapter 6
Large load inertia
moment causes the
servo motor shaft to
oscillate side to side.
If the servo motor can be run
safely, repeat acceleration and
deceleration three times or more to
complete auto tuning.
Gain adjustment fault
MR-JE-_C
Chapter 6
Note. Refer to "MELSERVO-JE Servo Amplifier Instruction Manual (Troubleshooting)" for details of alarms and warnings.
12.6.2 Automatic operation mode
POINT
In the absolute position detection system, there are the following restrictions on
[Pr. PA06 Number of gear teeth on machine side] and the servo motor speed
(N).
When CMX ≤ 2000, N < 3076.7 r/min
When CMX > 2000, N < 3276.7 - CMX r/min
When the servo motor is continuously operating at a servo motor speed higher
than the limit value, [AL. E3 Absolute position counter warning] occurs.
When the same next station No. is specified as station No. of the current
position, and the positioning operation is executed, the motor does not start
because the travel distance is determined as "0".
(1) Automatic operation mode
(a) Logic of indexer
The positioning is executed like this. A station, which one of the divided circumference (360 degrees)
into 255 at most on the machine side, is selected by using 8-bit devices of the next DI0 (Next station
selection 1) to DI7 (Next station selection 8). The following diagram is an example for when [Pr.
PA14] is set to "0".
Station No. 0
Station No. 254
Station No. 253
Station No. 2
Station No. 1
CW direction
The station No. 0 is set as a home position. The number of divisions is set with [Pr. PT28].
Summary of Contents for MR-JE-C
Page 33: ...2 SIGNALS AND WIRING 2 16 MEMO ...
Page 37: ...3 STARTUP 3 4 MEMO ...
Page 129: ...6 HOMING MODE 6 36 MEMO ...
Page 169: ...7 HOW TO USE THE POINT TABLE 7 40 MEMO ...
Page 203: ...9 HOW TO USE JOG MODE 9 12 MEMO ...
Page 215: ...11 APPLICATION OF FUNCTIONS 11 8 MEMO ...
Page 307: ...12 WHEN USING WITH A GENERAL PURPOSE INTERFACE 12 92 MEMO ...
Page 309: ...MEMO ...