Analog Monitor Signal Settings; Setting To Use An External Encoder For Speed Feedback - YASKAWA SGD7S Product Manual

 Setting Example
Increase the value if the belt slips or is twisted excessively.
If this parameter is set to 0, the external encoder value will be read as it is.
If you use the default setting of 20, the second rotation will start with the deviation for the first
motor rotation multiplied by 0.8.
Deviation between motor and external encoder
Large
Small
1st rotation
 Related Parameters
Multiplier per One Fully-closed Rotation
Pn52A Setting Range
10.3.7

Analog Monitor Signal Settings

You can monitor the position deviation between the Servomotor and load with an analog moni-
tor.
Parameter

Pn006 n. 07

Pn007 n. 07
10.3.8

Setting to Use an External Encoder for Speed Feedback

For fully-closed loop control, you normally set a parameter to specify using the motor encoder
speed (Pn22A = n.0).
If you will use a Direct Drive Servomotor and a high-resolution external encoder, set the param-
eter to specify using the speed of the external encoder (Pn22A = n.1).
Parameter
n.0
(default setting)
Pn22A

n.1
Note: This parameter cannot be used if Pn002 is set to n.0 (Do not use external encoder).
Motor speed
2nd rotation
Setting Unit
0 to 100 1%
Name
Analog Monitor 1 Position deviation between motor and load
Signal Selection (output unit: 0.01 V/reference unit).
Analog Monitor 2 Position deviation between motor and load
Signal Selection (output unit: 0.01 V/reference unit).
Use motor encoder speed.
Use external encoder speed.
10.3 Parameter Settings for Fully-Closed Loop Control

10.3.7 Analog Monitor Signal Settings

3rd rotation 4th rotation
Default Setting When Enabled
20
Meaning
Meaning
Pn52A = 0
Pn52A = 20
Pn52A = 100
Classification
Immediately Setup
When Classifi-
Enabled cation
Immedi-
Setup
ately
When
Classification
Enabled
After restart Setup
10
10-9