Control Techniques Digitax ST Advanced User's Manual page 206

Ac variable speed drive for servo motors
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Parameter
Menu 21
structure
21.21
Speed feedback selector
Bit
SP
Coding
Range
0 to 3
Default
0
Normal motor
Pr 3.26
parameter
Update rate
Background read
0, drv: Drive encoder
The position feedback from the encoder connected to the drive itself is used to derive the speed feedback for the speed controller and to calculate the
motor rotor flux position.
1, Slot1: Solutions Module in slot 1
The position feedback from the Solutions Module in Solutions Module slot 1 is used to derive the speed feedback for the speed controller and to
calculate the motor rotor flux position. If a position feedback category Solutions Module is not installed in slot 1 the drive produces an EnC9 trip.
2, Slot2: Solutions Module in slot 2
3, Slot3: Solutions Module in slot 3
21.22
Current controller Kp gain
Bit
SP
Coding
Range
0 to 30,000
200V drive: 75
Default
400V drive: 150
Normal
Pr 4.13
parameter
Update rate
Background read
21.23
Current controller Ki gain
Bit
SP
Coding
Range
0 to 30,000
200V drive: 1,000
Default
400V drive: 2,000
Normal
Pr 4.14
parameter
Update rate
Background read
21.27
Motoring current limit
Bit
SP
Coding
Range
0 to MOTOR2_CURRENT_LIMIT_MAX %
Default
300.0
Normal
Pr 4.05
parameter
Update rate
Background read
206
Keypad and
Parameter x.00
display
FI
DE
Txt VM DP
ND
1
FI
DE
Txt VM DP
ND
FI
DE
Txt VM DP
ND
FI
DE
Txt VM DP
ND
1
1
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Parameter
Advanced parameter
description format
descriptions
RA
NC
NV
PT
US RW BU
1
1
RA
NC
NV
PT
US RW BU
1
1
RA
NC
NV
PT
US RW BU
1
1
RA
NC
NV
PT
US RW BU
1
1
1
Serial comms
Electronic
protocol
nameplate
PS
1
PS
1
PS
1
PS
1
Digitax ST Advanced User Guide
Issue Number: 1
Performance

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