Stegmaier-Haupt TV 6.2, Руководство пользователя

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TV6.2 25
4 Adjustments
The actual value is connected as tacho signal or as armature voltage signal
with an internal bridge (switch S6:K4 ON).
The quality of the actual value signal determines the control range and the
control precision. The best results can be achieved through the use of dc tacho
generators.
Three-phase tacho generators with rotor position evaluation or digital actual
value generator with a rotation direction dependent signal can also be used.
Alternating or three-phase current tachos with rectification are not suitable for
4Q operation.
The tacho conductors are to be well shielded and laid separately from the po-
wer conductors. The shield must be connected to the device.
Tacho adjustment rf. to page 29.
For a 4Q-control with a small control range (up to 1:50) and a reduced de-
mand on the precision and dynamics the armature voltage can be used as
actual value signal.
Input X1:20c (X1:7) Tacho (signal )
Input X1:22c (X1:6) Tacho (GND)
The tacho input X1:22c and the command
value input X1:26c must have opposite polarities.
The tacho voltage is adjusted by means of the
binary switch S9 (rf. to chapter ‘adjustments’).
A smoothing capacitor can be connected
by means of the switch S3:K3
For armature voltage control with IxR compensation the armature voltage U
A
is
internally connected by means of the switch S6:K4.
The switch S9 (tacho divider)
must be
switched to zero position.
The tacho watchdog is switched off.
Switch S1:K2 open (OFF)
Switch S6:K1 closed (ON)
Note:
For a positive command value (X1:4) the tacho signal (X1:7) must be positive.
The motor connection (X1:16) is positive referred to X1:15.