Mitsubishi Electronics QD75MH2 Manuel D’Utilisation

 
 

 

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MELSEC-Q

 

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(c)  Continuous positioning control using multiple positioning data can be 

executed in accordance with the operation patterns the user assigned to 
the positioning data.  (Refer to Section 5.3 and 9.1.2.) 
Continuous positioning control can be executed over multiple blocks, where 
each block consists of multiple positioning data.  (Refer to Section 10.3.2.) 

 

(d)  OPR control is given additional features  (Refer to Section 8.2.) 

Four different machine OPR methods are provided: the near point dog 
method, two count methods, and the data set method. 

 

(e)  Two acceleration/deceleration control methods are provided: automatic 

trapezoidal acceleration/deceleration and S-pattern acceleration/ 
deceleration.  (Refer to Section 12.7.7.) 

 

(3)   Quick startup (Refer to Section 3.1.) 

A positioning operation starts up quickly taking as little as 3.5 ms to 4 ms. 
When operation using simultaneous start function or interpolation operation is 
executed, the axes start without delay. 
(Example) Axis 1 and Axis 3 are started by the       : No delay in Axis 1 and 

simultaneous start function                       Axis 3 start 
Axis 2 and Axis 4 are started by the       : No delay in Axis 2 and 
interpolation operation                              Axis 4 start 

 

(4)   SSCNET  makes the connection to the servo amplifier possible  

(a)  The QD75MH can be directly connected to the servo amplifier using the 

MELSERVO (Mitsubishi's servo amplifier: MR-J3-B). 

 

(b)  Because the SSCNET  cable is used to connect the QD75MH and the 

servo amplifier, or servo amplifiers, saving wiring can be realized. The 
cable between the QD75MH and servo amplifier or servo amplifiers can be 
extended up to 50m (164.04ft.). 

 

(c)  By the use of SSCNET  cable (Optical communication), influence of 

electromagnetic noise and others from servo amplifier, etc. are reduced. 

 

(d)  The servo parameters can be set on the QD75MH side to write or read 

them to/from the servo amplifier using the SSCNET . 

 

(e)  The actual current value and error description contained in the servo can 

be checked by the buffer memory of the QD75MH. 

 

(5)   Easy application to the absolute position system 

(a)  The absolute position-corresponding servo amplifier is connected to have 

an application to the absolute position system. 

 

(b)  Once the OP have been established, the OPR operation can also be made 

unnecessary when the power is supplied. 

 

(c)  With the absolute position system, the data set method OPR is used to 

establish the OP. 

 

(d)  When the setting unit is "degree", the absolute position system with 

unlimited length feed can be configured.