Menu 2
Parameter
structure
Keypad and
display
Parameter x.00
Parameter description
format
Advanced parameter
descriptions
Serial comms
protocol
Performance
36 Mentor MP Advanced User Guide
www.controltechniques.com Issue Number: 4
If this bit is set the ramp will be held. If S ramp is enabled the acceleration will ramp towards zero causing the ramp output to curve towards a constant
speed. If a drive stop is demanded the ramp hold function is disabled.
When Pr 2.05 is set to 0 the speed reference is set to zero.
When set to 1 the speed reference is equal to the post ramp reference.
Setting this parameter enables the S ramp function.
This parameter defines the maximum rate of change of acceleration/deceleration. If the S ramp is disabled (Pr 2.06 = 0) a linear ramp is used and the
time in seconds taken for the ramp output to change by speed (Δ w*) is given by:
Speed
T
Ramp =
Δw* x A / See Pr 2.39
Where A is the selected ramp rate in s / See Pr 2.39
If the S ramp is enabled (Pr 2.06 = 1) then the ramp time is extended as shown in the diagram opposite.
2.01
{di03, 0.38}
Post ramp reference
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
11111
Range ±SPEED_MAX rpm
Update rate 4 ms write
2.02 Ramp enable
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Default 1
Update rate 4 ms read
2.03 Ramp hold
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Default 0
Update rate 4 ms read
2.05
Ramp output selector
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Default 1
Update rate Background read
2.06 S ramp enable
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Default Eur: 0 / USA: 1
Update rate 4 ms read
2.07 S ramp acceleration limit
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
3111
Range
0.000 to 100.000 s
2
/1,000 rpm
Default 3.600
Update rate Background read
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