MITSUBISHI MELSEC L Series SFC Manual MELSEC L Series Programming Manual

MITSUBISHI motor universal AC servo amplifier MELSERVO-J3 series.
Rated output: 1.0kw.
Interface type: SSCNET type III fiber communication.
Special features: integrated driver security.
Power specification: three phase AC400V.
STO function as a security feature is added to the SSCNET III fiber communication type servo amplifier MELSEC L Series SFC Manual MELSEC L Series Programming Manual.
By using the STO function, the electromagnetic contactor used in the past to prevent the motor from accidentally starting is no longer needed MELSEC L Series
SS1 functions can be realized by using the MR-J3-D05 security logic unit.
MR-J3-BS uses a full closed loop control system.
Compatibility with MR-J3-B.
MR-J3-BS installation, wiring and connectors are the same as the MR-J3-B, so do not change the existing connection will be easy to MR-J3-B
Change to MR-J3-BS MELSEC L Series SFC Manual MELSEC L Series Programming Manual.
Security functions are connected to the CN8 interface through an external security circuit to increase the MR-J3-BS driver security.
Compatible full closed loop control system.
MR-J3-BS has a full closed loop control system version. Cable length: 5.0M. Used in MR-J2S-700B (4) or lessDrive: MR-H_ACN series built-in positioning function MELSEC L Series SFC Manual MELSEC L Series Programming Manual.
Rated output: 0.2KW.
In servo drive speed closed loop,
Rotor speed measurement accuracy is very important to improve the dynamic and static characteristics of the speed control loop.
In order to seek the balance between measurement precision and system cost, incremental photoelectric encoder is generally used as the speed measuring sensor,
The corresponding method is M/T velocity measurement.
Although the M/T measurement method has a certain measurement accuracy and a wide range of measurement,
But this method has its inherent defects,
Mainly includes: the measurement period must be detected at least one complete encoder pulse, limiting the minimum detectable speed.
2 coontrol system for speed control of the timer switch is difficult to maintain synchronization,
Can not guarantee the accuracy of measurement in the situation where the speed change is largger MELSEC L Series SFC Manual MELSEC L Series Programming Manual MELSEC L Series SFC Manual MELSEC L Series Programming Manual.
Therefore, it is difficult to improve the speed tracking and control performance of servo drive by using the traditional speed loop design method.