Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 226

*1 Estimated static friction and dynamic friction can be saved by opening the machine diagnostic screen of MR Configurator2.
*2 If the equipment has been operated for less than continuous three hours, or the friction estimation has not finished for the rotation
direction set in [Pr. PF52.5 Static friction failure prediction - Static friction selection], the threshold is not calculated automatically.
■Static friction failure prediction warning setting
Set [Pr. PF51.5 Static friction failure prediction warning selection], and enable the static friction failure prediction warning.
When "1" (static friction threshold automatic setting) is set, the threshold is automatically calculated inside the servo amplifier.
When "2" (static friction threshold manual setting) is set, set the threshold with servo parameter.
Servo Symbol
parameter
PF51.5 *MFP
■Setting "Failure prediction - Servo motor total travel distance"
When using the automatic threshold setting, set the Failure prediction - Servo motor total travel distance in [Pr. PF53 Failure
prediction - Servo motor total travel distance].
If the machine total travel distance is smaller than the Failure prediction - Servo motor total travel distance, the threshold will
not be automatically set from the estimated static friction, assuming that the belt has been initially stretched. Set a servo motor
travel distance at which the initial stretch completes in consideration of the Failure prediction - Servo motor total travel
distance by referring to the initial stretch characteristic presented by respective belt manufacturers and the typical drive
pattern of the device. For example, if the Failure prediction - Servo motor total travel distance is to be 8 × 10
[10 rev] in [Pr. PF53 Failure prediction - Servo motor total travel distance].
4 APPLICABLE FUNCTIONS
224
4.5 Machine diagnosis
Name
Static friction failure prediction
warning selection
Description
0: Disabled (initial value)
1: Automatic threshold setting
2: Manual threshold setting
3: Threshold reset
5
rev, set "80000"