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3-14
3-5-2 User Parameter Chart
PRM
No.
Parameter name
Factory
setting
Unit
Setting
range
Explanation
Cn-00
System check mode
---
---
---
Refer to system check mode
explanation.
Cn-01
Setup parameter no. 1
---
---
---
Refer to setup parameter no. 1
explanation.
Cn-02
Setup parameter no. 2
---
---
---
Refer to setup parameter no. 2
explanation.
Cn-04
Speed loop gain
(See note 1)
80
Hz
1 to 2,000
Adjusts speed loop response.
Cn-05
Speed loop integration
constant
20
ms
2 to 10,000
Speed loop integration
constant.
Cn-12
Brake timing
0
10 ms
0 to 50
Delay time setting from brake
command until servo turns off.
Cn-17
Torque command filter
time constant
4
100
µ
s
0 to 250
Setting for torque command fil-
ter time constant (6.4 to
398 Hz).
Cn-1A Position loop gain
40
1/s
1 to 500
For position loop response ad-
justment.
Cn-1b
Positioning completion
range
3
Command
units
0 to 250
Sets the range for the position-
ing completion signal output.
Cn-24
Electronic gear ratio G1
(numerator) (see note 2)
4
---
1 to 65,535
Setting range
0.01
x
G1/G2
x
100
Cn-25
Electronic gear ratio G2
(denominator) (see note 2)
1
---
1 to 65,535
0.01
x
G1/G2
x
100
Cn-26
Position command accel-
eration/deceleration time
constant
0
0.1 ms
0 to 640
Sets the setting number for
smoothing.
Note 1. Cn-04 (speed loop gain) is factory set for three times the load inertia. Therefore, if the load
inertia is extremely small, some oscillation may occur. If it does, then lower Cn-04 to 20 or
less.
Note 2. After the settings for Cn-24 (Electronic gear ratio G1 (numerator)), and Cn-25 (Electronic gear
ratio G2 (denominator)) have been made, they become effective when the power is turned on
again after having been cut off. (Check to see that the LED display has gone off.)
3-5-3 Electronic Gear
j
Function
•
The motor will be driven with a pulse determined by multiplying the command pulse count by the
electronic gear ratio.
•
The electronic gear is useful for the following applications:
To fine-tune the position and speed of two lines that must be synchronized.
When using a positioner with a low command pulse frequency.
To set the machine movement per pulse to a specific value, such as 0.01 mm.
j
Setting User Parameters
•
The electronic gear is set as G1 divided by G2 (G1/G2). G1 is set in user parameter Cn-24; G2 is set
in Cn-25. The target pulse count is computed as follows:
Operation
Chapter 3
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