Operating Modes
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
608
of 814
3.8
Electronic transmission
The electronic transmission extends the functionality of the software module synchronous
operation with an adjustable transmission ratio between slave axis and master axis. The
transmission ratio i is specified from 2147483647:1 to 1: 2147483647 as quotient from
two natural numbers and can also be changed in the enabled status ("Online"). The
counter may become negative. The function of a reverse transmission can thereby be im
-
plemented.
The transmission factor settings are entered in the parameters Z145.3– Transmission
revolutions Slave axis and Z145.4– Transmission revolutions master axis.
An editing mode can be selected through Z145.2– Mode bit 4. The two transmission fac-
tors can be changed without changing the transmission ratio. The two factors will become
effective simultaneously when the bit 4 (1
0) is deleted.
Speed - synchronous operation
A Speed - synchronous operation can be implemented by switching off the reinforcement
of the position control circuit (
Z18.14– Kv Position Control = 0). The speed feedforward
(Z18.15– w2 Feedforward factor = 1.00) must be set to 100% when the calculated slave
axis set value speed is to be transferred to the speed control 1:1. The speed feedforward
can be changed for corrections of the slave axis speed.
The smoothing of the speed feedforward Z18.70– can be used for smoothing the speed
set value of the master axis.
Other functions
m Optional speed synchronization of the slave axis with the master axis is possible when
the synchronous operation is activated. For details, refer to Parameter
Z145.2– Mode
bit 8.
m Speed synchronization with Online operating mode changeover (Status Operation En-
abled) from synchronous operation to another position or speed controlled operating
mode. The speed synchronization must be activated for the operating mode.
m Stop command possible through control word bit 8. A speed synchronization with the
master speed may occur after the Stop has been canceled.
m Integrated Ramp generator with profile data in master axis resolution. The setting is en-
tered in Parameters Z145.7– to Z145.9–. A selection between speed profiles Trape-
zoidal or S-Curve is possible. The ramp generator becomes active during speed
synchronization, with a Stop command or with the virtual master axis.
m Virtual master axis without ramp generator (ramp function generator) with optional in-
terpolation of set value cycle to control cycle. This mode is activated in Parameter
Z145.2– Mode bit 12 = 1.
The interpolation cycle setting for the set value speed (Z145.10– Virtual master speed
set value) is entered in Z145.11–. Interpolation does not occur with a value of 1 ms
and the Z145.10– is directly (not interpolated) transferred to the transmission input).
The parameter may also be a multiple of the fieldbus cycle, such as Fieldbus cycle =
2
ms and set value cycle = 6 ms. In the example this means that the control must only
send a newly calculated speed set value to the controller every third fieldbus cycle.
m Monitoring of speed synchronization between master and slave axis.
Z145.1– Status bit 8 displays exiting the Z145.6– Synchronization Velocity window of
the slave axis.
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