Description of the Software Modules and Parameters
Parameter manual b maXX BM3000
Document no.: 5.12001.07
621
of 820
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m Weighting
The set value can be weighted by Z121.16– Rotational position resolution.
The weighting is off at a rotational position resolution of 0.
m Load gear
An available load gear can be regarded by the parameter Z121.13– Input revolutions
and Z121.14– Output revolutions.
m Modulo position set value
The set value can be used as modulo position set value.
This function is activated by Z121.15– Modulo revolutions > 0 and Z121.16– Rota-
tional position resolution > 0. If one of these parameters is 0 the modulo handling is
switched off.
By Z121.15– is determined when the revolutions of the modulo position shall invert to
0.
The Z121.27– Set value mode determines the rotational direction. The presetting is
"shortest path". The other direction modes at "position control with synchronous set
value setting" make sense only if the rotational direction of the set values shall be mon-
itored. A movement of the set value towards the "inhibited" direction causes a very
large position change in the "free" direction. Dependent on the Z121.11– Speed limit
this leads to the error message 910 "Overspeed detected at the set value input". In
general, the error reaction "Quickstop" occurs. The error reaction can be adapted.
Bit 8: Interpolation procedure
This is where the procedure for the interpolation level "Set value cycle Cycle internal
set value interface" is entered.
The interpolation level "Cycle internal set value interface Controller cycle" is thereby
not influenced. This interpolation is defined through Parameter
Z111.6– Interpolation
mode!
The cycle of the internal set value interface corresponds with the Z1.10– Task fieldbus
cycle time ( = Z131.18– Fieldbus cycle time / Z131.20– Division ratio fieldbus task. The
set value cycle can be increased through the factor for the interpolation interval against
the fieldbus cycle time. If the factor for the interpolation interval (
Z136.2– bit 12 and 13)
is set to 1, the interpolation level "Set value cycle Cycle internal set value interface" is
not needed and bit 8 is of no importance.
It must be interpolated and bit 8 is active, if a Z131.20– division ratio fieldbus task which
is greater than 1 was set.
NOTE!
Changes in the rotational position resolution, in the modulo revolutions and of the
gear factors are accepted only after an inhibit and a new enable of the operation
mode -4!
The Z121.17– Modulo position actual value is used when switching on the operation
mode -4 to initialize the modulo position set value (Z136.3–). Thereby, when chang-
ing the above parameters the function "Modulo position actual value" (Z121.1– bit 4)
must be switched off and then on in order to initialize again. Then the operation mode
-4 can be enabled.
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