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5. PARAMETERS
Class No. Symbol Name and function
Initial
value
Unit
Setting
range
3 CMX Electronic gear numerator (Command pulse multiplying factor numerator)
Used to set the electronic gear numerator value.
For the setting, refer to Section 5.2.1.
Setting "0" automatically sets the resolution of the servo motor connected.
For the HC-MFS series, 131072 pulses are set for example.
10
1
to
65535
4 CDV Electronic gear denominator (Command pulse multiplying factor
denominator)
Used to set the electronic gear denominator value.
For the setting, refer to Section 5.2.1.
11
to
65535
5 INP In-position range
Set the in-position (INP
) output range in the command pulse unit that
was used before 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[ m] 10
6
10[mm] 10
3
131072[pulse/rev]
16384
125
10
100 pulse 0
to
10000
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.
35 red/s 4
to
2000
Basic DRU parameters
7 PST 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 DRU 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.
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
3ms0
to
20000