Menu 2: Ramps - Control Techniques Digitax ST Advanced User's Manual

Parameter
Menu 2
structure
5.4

Menu 2: Ramps

The pre-ramp speed reference passes through the ramp block controlled by menu 2 before being used by the drive as an input to the speed
controller. The ramp block includes: linear ramps, an S ramp function for ramped acceleration and deceleration, deceleration ramp control to prevent
rises in the DC bus voltage within the drive that would cause an over-voltage trip if no braking resistor is installed.
Figure 5-2 Menu 2 logic diagram
Acceleration rates 1 ~ 8
2.11
Acceleration rate 1
2.12
Acceleration rate 2
2.13 Acceleration rate 3
2.14
Acceleration rate 4
2.15
Acceleration rate 5
2.16 Acceleration rate 6
2.17
Acceleration rate 7
2.18 Acceleration rate 8
Preset reference
selected indicator
Pre-ramp speed
1.03
reference
34
Keypad and
Parameter x.00
display description format
Acceleration rate select bits
2.34
2.33 2.32
2.32
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
1.50
1
2
3
4
5
6
7
8
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Parameter Advanced parameter
descriptions
The parameters are all shown at their default settings
Acceleration
rate selector
2.10
Jog selected
1.13
indicator
Serial comms Electronic
protocol nameplate
Key
Input
0.XX
terminals
Output
0.XX
terminals
Jog acceleration
2.19
rate
Reverse Forward
accel. rate accel. rate
N N
t t
Acceleration
Ramp control
2.03 Ramp hold
Ramp mode
2.04
select*
Digitax ST Advanced User Guide
Performance
Read-write (RW)
parameter
Read-only (RO)
parameter
Issue Number: 1