MELSERVO-J4

Harmony with Machine A Variety of Functions

New Use fu l Func t i ons wi t h Pos i t i on i ng Func t i on

* Not supported by MR-J4-03A6-RJ.

New useful functions are added to the positioning function: simple cam function, encoder following function, pulse input through function, simple cam position compensation function, and communication functions (MODBUS ® RTU, Point to Point positioning, and current position latch function). Apply these useful functions to a wide variety of applications to configure positioning system easily. MR Configurator2 enables to create various patterns of cam data. Command pulse or point table/program start signal is used as input to the simple cam. The input command will be outputted to the servo motor according to the cam data. Simple cam function

MR-J4-GF/MR-J4-A-RJ

Set from master controller via network

MODBUS ® RTU

Command pulse (Synchronous encoder, etc.)

Create and set by MR Configurator2

MR-J4-A-GF-RJ MR-J4-A-RJ

Cam data

Personal computer

Point table/ program start signal

Input

Output

Point table/ Program

Switch

Servo motor

* The program-based method is supported only by MR-J4-A-RJ.

With the encoder following function, the servo amplifier receives A/B-phase output signal from the synchronous encoder as command pulse, and the input command will be outputted to the servo motor according to the cam data. Setting cam data that matches with the sheet length, a circumference of the rotary knife axis, and the synchronous section of the sheet enables a system in which the conveyor axis and the rotary knife axis are synchronized. Up to 4 Mpulses/s of input from a synchronous encoder is compatible with the servo amplifier. The pulse input through function allows the first axis to output A/B-phase pulses which are received from the synchronous encoder to the next axis, enabling a system in which the subsequent axes are synchronized with the synchronous encoder. Encoder following function/Pulse input through function* The actual position of the servo motor is obtained based on the inputs from the sensor that detects the registration marks printed on the high-speed moving film. The servo amplifier calculates compensation amounts and corrects position errors of the rotary knife axis based on those inputs from the sensor so that the film can be cut at the set position. Simple cam position compensation function*

Encoder following

Pulse input through

Simple synchronization with conveyor axis

A/B-phase pulse

A/B-phase pulse

Synchronous encoder

Servo motor

Servo motor

Rotary knife axis

Conveyor axis

Cutting length set

Inverter (Drives conveyor axis by speed control)

* The pulse input through function is available as A/B-phase pulse input through function for MR-J4-GF-RJ and as command pulse input through function for MR-J4-A-RJ.

(2) Calculates a compensation amount in the servo amplifier

A/B-phase pulse

(3) Compensates a rotary knife axis Servo motor

(1) Turns on the cam

position compensation request* by detection of mark sensor

Synchronous encoder

Rotary knife axis

Mark sensor

* "Cam position compensation request" is turned on with touch probe input for MR-J4-GF-RJ and mark sensor input for MR-J4-A-RJ.

Conveyor axis

Cutting length set

Inverter (Drives conveyor axis by speed control)

13