MR-J2M multi axis servo amplifier expansion unit.
1, the servo controller through the automation interface can be easily carried out the operation module and the conversion of the field bus module,
At the same time using different fieldbus modules to achieve different control modes (RS485, RS232, optical fiber, InterBus, ProfiBus),
And the control mode of general inverter is single MR-J4-60A datasheet PDF catalog MR-J4-60A PDF datasheet MR-J4-60A
2, the servo controller is directly connected with the rotary transformer or encoder, and the speed and displacement control loop is formed.
The general inverter can only form an open loop control system.
3 servo controller of the control parameters (such as steady-state accuracy and dynamic performance) is better than the general inverter MR-J4-60A datasheet PDF catalog MR-J4-60A PDF datasheet. MITSUBISHI motor universal AC servo amplifier MELSERVO-J3 series.
Rated output: 15.0kw.
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.
By using the STO function, the electromagnetic contactor used in the past to prevent the motor from accidentally starting is no longer needed MR-J4-60A datasheet PDF catalog MR-J4-60A PDF datasheet.
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.
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. Drive: MR-H_ACN series built-in positioning function.
Rated output: 22KW.
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 speedd MR-J4-60A datasheet PDF catalog MR-J4-60A PDF datasheet.
2 control 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 MR-J4-60A datasheet PDF catalog MR-J4-60A PDF datasheet.
Therefore, it is difficult to improve the speed tracking and control performance of servo drive by using the traditional speed loop design method.