4. Commissioning positioning systems
4−36
Festo P.BE−SPC200−WIN−PISA−CD−EN en 0901d
Description of parameters under Controller parameters"
(pneumatic axis)
Gain factor With the gain factor, you can influence the sensitivity with
which the closed loop positioning reacts to modifications to
the measuring variables (position, speed, acceleration).
Permitted: 0.1 ... 10.0
Damping factor Damping is a measure of the transition behaviour of the sys
tem from the current
to the reference status, especially with
fast modifications to the reference value. The system should
guarantee low oscillation behaviour with the reference value
specification and no−overswing movement into the end posi
tion.
By modifying the factor for damping, you can influence the
transition behaviour of the system.
Permitted: 0.1 ... 10.0
Signal filter factor Speed
and acceleration are derived from the path signal and
are filtered to improve the signal quality. If a worse signal
quality now exists in practice because of, e.g. electrical inter
ference, the filtering of the signal can be influenced by the
signal filter factor.
If the filtering is too strong, it can destabilize
control.
Permitted: 0.1 ... 10.0
Positioning timeout The Positioning timeout monitors whether the positioning
procedures are completed quickly enough. The SPC200 will
register a fault (MC error) if:
the drive does not start moving within the specified posi
tioning timeout after it has received the positioning com
mand.
the drive exceeds the maximum permitted positioning
time
(sum of the internally calculated positioning time
and the positioning timeout).
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