Ramp-Function Generator - Siemens SIMODRIVE 611 universal Function Manual

6 Description of the Functions
6.1 Operating mode, speed/torque setpoint (P0700 = 1)
6.1.3 Ramp–function generator
General
information
Parameter
overview
Table 6-1 Parameter overview for the ramp–function generator
No.
0616:8 Ramp–function generator, ramp–up
from SW 2.4 time (ARM)
1256:8
The setpoint is increased from zero up to the maximum permissible actual speed within
this time.
S
Max. permissible actual speed for synchronous motors: Minimum from 1.1 S P1400
and P1147 (from SW 7.1 1.05 S P1400 and P1147 with "SIMODRIVE 611 universal
HR", resolver)
S
Max. permissible actual speed for induction motors: Minimum from P1146 and P1147
S
Max. permissible actual speed for linear motors: from P1147
0617:8 Ramp–function generator, ramp–
from SW 2.4 down time (ARM)
1257:8
The setpoint is changed from the maximum permissible actual speed to zero within this
time.
S
Max. permissible actual speed for synchronous motors: Minimum from 1.2 SP1400
and P1147
S
Max. permissible actual speed for induction motors: Minimum from P1146 and P1147
1012.0 Ramp–function generator tracking
The ramp–function generator tracking can be activated/de–activated using P1012 bit 0.
= 1
= 0
n
Without RFG tracking
The drive continues to accelerate
between t
setpoint (e.g. setpoint 0) is less than the
speed actual value.
Note:
1) For example, from the PROFIBUS control word NSOLL or P0641 (fixed speed
setpoint).
2) Ramp–function generator output corresponds to the speed setpoint trace parameter.
6-334
The ramp–function generator is used to limit the acceleration when the
analog setpoint voltage has step changes.
Various parameter set–dependent ramps can be entered for ramp–up
and ramp–down.
The following parameters are available for the ramp–function generator:
Parameters
Name
(SRM, SLM)
(SRM, SLM)
Ramp–function generator tracking active (standard)
Not active
Speed Ramp–function
setpoint generator
1) 2)
1 output
Speed actual value
t t
1 2
and t , although the speed
1 2
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Min. Standard Max.
2.0
0.0 600.0
0.0
2.0
0.0 600.0
0.0
– –
–
Speed
setpoint
1)
1
n
Speed actual value
t
With RFG tracking
The ramp–function generator output
is prevented from leading the speed
actual value so that t
merge.
E Siemens AG 2005 All Rights Reserved
06.04 01.99
Units Effective
Immedi-
s
ately
Immedi-
s
ately
Immedi-
hex
ately
Ramp–function
generator output
2)
with tracking
t t
t
1 2
and t almost
1 2