6Functions
50 Festo – GDCP-CMMP-M0-FW-E N – 1304NH
Through the input SAM PLE, t he current actual position of the master system can be recorded (trigger
event). At each trigger event, the current master position of the input [X10] is saved.
After that, synchronisation can be started through the digital input START. A new synchronisation is not
initiated until a new start command, whereby the destination is calculated using the stored synchron-
ous position.
The advantage of this pro cedure is a more ex act determination of the synchronisation destination,
since jitters at the star t of synchronisation are reduc ed.
Speed-synchronous torque limitation
The setpoint speed is transferred to the slave by the master via the encoder interfac e [X10] and added
as synchronous speed via setpoint selector A. You can optionally activ ate a torque limitation via
selector B.
Synchronous speed limiting in torque-controlled operation
Torque-controlled operation with speed limitation via the encoder interface [X10]. The speed is trans-
ferred to the slave by the master via the encoder interface [ X10] and ac tivated as speed limitation via
setpoint selector B.
Required parameters
Parameter
Description
Electronic gear unit Through parameterisation of the gear ratios, exact translation ratios
between a master and slave drive are achievable. The default setting is 1
(number of lines of the slave : number of lines of the master).
A transmission ratio > 1 is a “reduction” ratio. The drive speed (master)
would t herefore be bigger than the output speed (slave).
Speed filter Filter time constant of the synchronous speed
This describes the scanning rate (time slot pattern) used to refre sh the
incoming signals at the synchronous input [X10] .
Input tracks Depending on the encoder design, there are v arious signal inputs available
at [ X10]. Alternatively, the following signals can be connec ted in accordance
with RS42 2 specifica tion:
– Differential inputs with TTL level A-B-(N),
– Dif ferential inputs for SSI pulse/direction encoder (CLK/DIR) or up-
ward/downward counter (CW/CWW).
Number of lines The line count c orresponds to the number of full periods in a track per
revolution. (Value must be between 1 and 2
28
). The incremental input
always uses four-fold evaluation. Acc ordingly the resolution is higher than
the line count itself by a factor of 4.
Tab. 6.14 Increment generator input parameter
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