Jog Deceleration Rate - Control Techniques unidrive sp Advanced User's Manual

Parameter Keypad and
Menu 2
structure display
When Pr 2.20 is set to 0 the deceleration ramp rate selected depends on the state of bit Pr 2.35 to Pr 2.37. These bits are for control by digital inputs
such that ramp rates can be selected by external control. The ramp rate selected depends on the binary code generated by these bits as follows:
02.37 02.36
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
When Pr 2.20 is set to 9 the appropriate deceleration rate is automatically selected depending on the value of Pr 1.50, and so a deceleration rate can
be programmed to operate with each reference. Since the new ramp rate is selected with the new reference, the deceleration applies towards the
selected preset if the motor needs to decelerate to reach the preset.
2.21 Deceleration rate 1
2.22 Deceleration rate 2
2.23 Deceleration rate 3
2.24 Deceleration rate 4
2.25 Deceleration rate 5
2.26 Deceleration rate 6
2.27 Deceleration rate 7
2.28 Deceleration rate 8
Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
Closed-loop vector and Servo DP = 3
Open-loop
Range
Closed-loop vector, Servo
Open-loop
Default Closed-loop vector
Servo
Second motor
Open-loop, Closed-loop vector, Servo
parameter
Update rate 4ms read
2.29

Jog deceleration rate

Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
Closed-loop vector and Servo DP = 3
Open-loop
Range
Closed-loop vector and servo
Open-loop
Default
Closed-loop vector, Servo
Update rate Background read
The jog deceleration rate is only used when the drive is changing speed because the jog reference has changed or to stop from the jog reference. It
is not used to go from the jog to the run state. This prevents the fast ramps normally used with jog from being used when changing between running
and jogging.
42
Parameter Parameter
x.00 description format
02.35 Ramp defined by
0 02.21
1 02.22
0 02.23
1 02.24
0 02.25
1 02.26
0 02.27
1 02.28
FI DE Txt VM DP ND RA NC NV
1
0.0 to 3,200.0 s/100Hz
0.000 to 3,200.000 s/1000rpm
10.0
2.000
0.200
Pr 21.05 for Pr 2.21 only
FI DE Txt VM DP ND RA NC NV
1
0.0 to 3,200.0 s/100Hz
0.000 to 3,200.000 s/1000rpm
0.2
0.000
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Advanced parameter Serial comms
Macros
descriptions
PT US RW BU
1 1
PT US RW BU
1 1
Electronic
Performance
protocol nameplate
PS
1
PS
1
Unidrive SP Advanced User Guide
Issue Number: 7
Feature look-
up table