12-15-6
Chapter 12
Inverter Function
12.15.3
Stopping with servo-lock
• How to stop the motor when a large moment of
inertia makes it continue rotating even after
deceleration stop
• How to stop the motor at a fixed position
• To use DC braking for stopping (servo-lock
control), the following settings are required:
- [AA121] Control mode (see the right section)
- Set [AF101] DC braking selection to 01
- Set [AF102] Braking mode selection to 01 or
02.
- Set [AF106] DC braking time to other than 0.0
Parameter
• The carrier frequency during DC braking depends
on [bb101], but it is limited to at maximum 5 Hz.
Depending on the set braking force, the carrier
frequency may automatically go down to 2 kHz.
• To use the servo-lock control, it is necessary to set
[AA121] Control mode. If the applicable control
mode is not selected, the inverter will operate as if
[AF102] has been set to 00: DC braking.
(1) When [AF102] Braking mode selection is set to
01: Speed servo-lock
No.
[AA121] Control mode
1
09: 0Hz-range sensorless vector control
2
10: Vector control with sensor
(2) When [AF102] Braking mode selection is set to
02: Position servo-lock
No.
[AA121] Control mode
1
10: Vector control with sensor
• To use the servo-lock control, it is necessary to set
[AA121] Control mode. See "12. 9 Selecting the
Motor Control Method According to Motor and
Load".
• The output of the servo-lock control is
automatically calculated according to the selected
control mode.
Item
Parameter
Data
Description
DC braking selection
[AF101]
00
Internal DC braking: Disabled
01
Internal DC braking: Enabled
02
Internal DC braking: Enabled (The braking
operates only with the set braking frequency.)
Braking mode
selection
[AF102]
01
Enables the speed servo-lock.
02
Enables the position servo-lock.
DC braking frequency
[AF103]
0.00~590.00(Hz)
With internal DC braking enabled, DC braking is
started when the output frequency reaches or
becomes less than the frequency set for
stopping.
DC braking delay time
[AF104]
0.00~5.00(s)
Specifies the delay in starting DC braking while
temporally shutting off the output.
DC braking time
[AF106]
0.00~60.00(s)
Sets the duration for DC braking. This setting is
valid for the [DB] terminal in edge mode or for the
internal DC braking.
When "0.00 s" is specified,
no braking operation will be performed.
DC braking
edge or level
selection
[AF107]
00
Edge mode (Examples 1-a to 6-a)
01
Level mode (Examples 1-b to 6-b)
Input terminal function
[CA-01]~[CA-11]
054
Controls with the servo-on mode using the [SON]
terminal.
OFF: Servo lock is disabled.
ON: Servo lock is enabled.
Control mode
[AA121]
08
Sensorless vector control
09
Zero-speed range sensorless vector control
10
Vector control with sensor
Q
A
!
Summary of Contents for SJ Series
Page 39: ...5 4 Chapter 5 Included Items Memo ...
Page 55: ...6 16 Chapter 6 Installation Memo ...
Page 91: ...7 36 Chapter 7 Wire Connection and Optional Devices Memo ...
Page 135: ...9 40 Chapter 9 Operating Instructions Memo ...
Page 145: ...10 10 Chapter 10 Test Run Memo ...
Page 159: ...12 2 6 Chapter 12 Inverter Functions Memo ...
Page 169: ...12 3 10 Chapter 12 Inverter Functions Memo ...
Page 195: ...12 5 8 Chapter 12 Inverter Functions Memo ...
Page 217: ...12 8 12 Chapter 12 Inverter Function Memo ...
Page 287: ...12 10 32 Chapter 12 Inverter Functions Memo ...
Page 303: ...12 11 16 Chapter 12 Inverter Functions Memo ...
Page 349: ...12 15 8 Chapter 12 Inverter Function Memo ...
Page 395: ...12 17 34 Chapter 12 Inverter Functions Memo ...
Page 397: ...12 18 2 Chapter 12 Inverter Functions Memo ...
Page 415: ...12 19 18 Chapter 12 Inverter Function Memo ...
Page 581: ...15 10 Chapter 15 Optional Cassettes Memo ...
Page 591: ...16 10 Chapter 16 ProDriveNext EzSQ Memo ...
Page 642: ...18 49 Chapter 18 Tips FAQ Troubleshooting Memo ...
Page 650: ...19 8 Chapter 19 Maintenance and Inspection Memo ...
Page 781: ...Appendix 1 70 Appendix 1 List of Parameters Memo ...