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Parameters – MITSUBISHI ELECTRIC MELSERVO MR-J2S- A User Manual

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5. PARAMETERS

Class

No.

Symbol

Name and function

Initial

value

Unit

Setting

range

Control

mode

5

INP

In-position range

Used to set the in-position (INP) output range in the command pulse
increments prior to electronic gear calculation.
For example, when you want to set 100 m when the ballscrew is
directly coupled, the lead is 10mm, the feedback pulse count is 131072
pulses/rev, and the electronic gear numerator (CMX)/electronic gear
denominator (CDV) is 16384/125 (setting in units of 10 m per pulse),
set "10" as indicated by the following expression.

100 10

6

10 10

3

131072[pulse/rev]

16384

125

10

100

pulse

0

to

10000

P

6

PG1

Position loop gain 1

Used to set the gain of position loop.
Increase the gain to improve trackability in response to the position
command.
When auto turning mode 1,2 is selected, the result of auto turning is
automatically used.

7kW or
less: 35

11kW or
more: 19

red/s

4

to

2000

P

Position command acceleration/deceleration time constant
(position smoothing)
Used to set the time constant of a low pass filter in response to the
position command.
You can use parameter No. 55 to choose the primary delay or linear
acceleration/deceleration control system. When you choose linear
acceleration/deceleration, the setting range is 0 to 10ms. Setting of
longer than 10ms is recognized as 10ms.

POINT

7

PST

When you have chosen linear acceleration/deceleration, do not

select control selection (parameter No. 0) and restart after
instantaneous power failure (parameter No. 20). Doing so will
cause the servo motor to make a sudden stop at the time of
position control switching or restart.

3

ms

0

to

20000

P

Example: When a command is given from a synchronizing detector,
synchronous operation can be started smoothly if started during line
operation.

Synchronizing
detector

Start

Servo amplifier

Servo motor

Without time
constant setting

Servo motor

speed

Start

With time
constant setting

ON
OFF

t

Internal speed command 1

Used to set speed 1 of internal speed commands.

S

B

asi

c p

ara

m

et

ers

8

SC1

Internal speed limit 1

Used to set speed 1 of internal speed limits.

100

r/min

0 to

instan-

taneous

permi-

ssible
speed

T