Wobble Generator - Siemens SIMOVERT FC Series Operating Instructions Manual

Function Descriptions
Operating range -100% to +100%
When "Raise setpoint" is selected, +100% is applied as a setpoint to the ramp-generator input and -100% for
"Lower setpoint". The Clockwise/Counter-clockwise switchover is not operative in this mode.
The operating range is selected by means of parameter setting (H400). Clockwise / counter-clockwise switchover
and Raise/Lower inputs are selected by means of control binectors.
Ramp-function generator
Ramp-up time:
is the time required by the ramp-function generator to pass through the 100% at the ramp-generator output with
a step change in the input quantity from 0 to 100%, or from 0 to -100%. With less abrupt changes at the input,
the rate of rise at the output is constant.
Ramp-down time:
is the time required by the ramp-generator to pass through 100% at the ramp-generator output with a step
change in the input quantity of 100% to 0 or of -100% to 0. With less abrupt changes at the input, the rate of rise
at the output is constant.
Set motorized potentiometer:
The ramp-function generator is set to the setting value when binector = 1.
Other settings via parameter H400:
- Selection of non-volatile storage of ramp-generator status on disconnection of power supply
- Bypass of ramp-generator in automatic mode (as for ramp-up/ramp-down time = 0)
Velocity signal dy/dt (K160)
This signal specifies the variation in the ramp-function generator output K158 during the period set in H412 and
H404.
Restriction in SW version 1.0:
In SW version 1.0, the signal dy/dt is generated correctly only if the ramp-function generator is active. If the
change at the RFG output is generated, for example, by a ramp at the RFG input with a lower rate of rise than
the run-up/run-down ramp, then the dy/dt signal is "0" because the RFG ramp time has always expired in this
case. The same also applies when a ramp-up/ramp-down time of "0" is set.
3.15

Wobble generator

See also sheet 24 of block diagram and parameter list (Chapter 4, parameters H408 to H426)
Note: Prerequisites for operation of the wobble generator:
In order to run up the wobble generator from the factory setting, you must:
− Set the wobble amplitude to H421 > 0
− Issue the wobble enable command (e.g. with H420 = 1)
− Input an "unmodulated setpoint" with a value other than zero, e.g. with H418 = 1
Synchronizing signal:
≠
If H423 360 is set, then the wobble generator operates in synchronism with a "master wobble generator", e.g.
installed on another T100:
- Every positive edge of the wobble synchronizing input signal results in termination of the current period of the
wobble triangle generator on completion of the phase shift parameterized in H423 and to the start of a new
period ("retriggering").
- If the frequency of the wobble synchronizing signal does not tally with the parameterized frequency (H422),
then "re-triggering" takes place if the wobble synchronizing signal frequency is higher - as described above.
3-28
T100 Technology Board Manual for Software Module MS100 "Multi-Purpose Drive"
Siemens AG 6SE7087-6CX84-0BB1
02.99