Pressure Feedback Control - YASKAWA SGD7S-R70A20A023F40B Product Manual

Pressure Feedback
Control
This chapter describes pressure feedback control.
3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.2 Connecting Pressure Sensor Amplifiers . . . 3-4
3.2.1 FT40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.2 FT41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3 Operation Patterns for Pressure Feedback Control . . 3-5
3.4 Changing from Torque Control to Pressure Feedback Control . . 3-6
3.4.1 Mode 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.4.2 Mode 1 Operation . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.5 Control Block Diagrams . . . . . . . . . . . . . . . 3-7
3.5.1 Pressure Feedback Control 2
(Pn458 = n.1) . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.5.2 Pressure Feedback Control 1
(Pn458 = n.0) . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.6 Setup Procedure . . . . . . . . . . . . . . . . . . . . 3-10
3.6.1 Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.6.2 Disabling Tuning-Less Function . . . . . . . . . . . . 3-10
3.6.3 Setting and Checking Other Station
Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.6.4 Settings for the System That Uses Pressure
Feedback Control . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.6.5 Automatic Offset Adjustment for Pressure
Feedback Detection Input Signal . . . . . . . . . . . 3-15
3.6.6 Settings prior to Pressure Feedback Control
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.6.7 Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 3-18
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