User Manual SCA-LE-30-03
+Tacho –Tacho: Analog Tachometer Feed Back
The
+Tacho
and
–Tacho
inputs are transmit an analog set value for the number of
revolutions from a tachometer coupled to the motor, back to the servo amplifier. This feature
improves the accuracy of speed control, stable even in cases of a large load change. The
input is given in form of a differential amplifier.
Additional information about the schematic refer chapter 3.2.
Range of Input Voltage
-50 V to +50 V
Input Impedance
50 kOhm
Input Protection
up to -60 V to +60 V
WARNING:
Correct polarity is crucial. Otherwise the motor operates at maximum speed
without any control. The value of the input protection depends on the setting of
n max
potentiometer.
7.4 Analog
Outputs
+Tacho out –Tacho out: Analog Encoder Output for Tachometer Feed Back
The
+Tacho out
XB/23and
–Tacho out
XB/24 outputs are transmit an analog set value for
the number of revolutions generated by a frequency to voltage converter from the digital
encoder signals. These output has to connected to the
+Tacho
XA/5 and
–Tacho
XA/6
inputs of the drive.
Additional information about the schematic refer chapter 3.2.
Range of Output Voltage
-3,9 V to +3,9 V
Output Impedance
100 Ohm
Permanent Output Current
20 mA max.
WARNING:
Correct polarity is crucial. Otherwise the motor operates at maximum speed
without any control.
ElectroCraft
®
E-Mail: [email protected] www.electrocraft.com May 2009
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