Mitsubishi Electric MR-J5 Series User Manual page 247

Setting of magnetic pole detection voltage level by position detection method
For the magnetic pole detection by the position detection method, set the voltage level with [Pr. PL09 Magnetic pole detection
- Voltage level]. For the magnetic pole detection by the minute position detection method, the voltage level setting is not
required.
■Guideline of servo parameter setting
Set the parameters by referring to the following table.
Servo status
Thrust at operation
Overload, overcurrent alarm
Magnetic pole detection alarm
Magnetic pole detection accuracy
■Setting procedure
1.
Perform the magnetic pole detection, and increase the setting value of [Pr. PL09 Magnetic pole detection - Voltage level]
until [AL. 050 Overload 1], [AL. 051 Overload 2], [AL. 033 Overvoltage], [AL. 0E1 Overload warning 1], and [AL. 0EC
Overload warning 2] occur. Increase the setting value by five as a guide value. When these alarms and warnings occur
during the magnetic pole detection with MR Configurator2, the test operation of MR Configurator2 automatically
completes and the servo-off status is established.
2.
Set the value to approximately 70 % of the value which triggers [AL. 050], [AL. 051], [AL. 033], [AL. 0E1], and [AL. 0EC].
If [AL. 027 Initial magnetic pole detection error] occurs with this value, specify a value intermediate between the value set
at occurrence of [AL. 050], [AL. 051], [AL. 033], [AL. 0E1], and [AL. 0EC] and the value set at the magnetic pole detection
alarm occurrence as the final setting value.
3.
Perform the magnetic pole detection again with the final setting value, and make sure that the accuracy of the magnetic
pole detection is as required.
■Setting example
Linear encoder magnetic
pole detection
Setting value of [Pr. PL09]
Occurring
Alarm
Not occurring
While increasing the setting value of [Pr. PL09], carry out
the magnetic pole detection repeatedly.
In this example, set the final setting value of [Pr. PL09] to 49 (setting value at the alarm occurrence = 70 × 0.7).
Small ← Medium → Large
(10 or less (initial value) 50 or more)
Small
Seldom occurs
Frequently occurs
Low
30 35 40
Large
Frequently occurs
Seldom occurs
High
45 65 70
An alarm has occurred when the setting
value of [Pr. PL09] is set to "70".
9 USING A LINEAR SERVO MOTOR
9
245
9.3 Startup [A]