Yaskawa LEGEND Digital Torque Amplifier - Manual (Page 52)

4.1 Torque/Force Control
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4. Description of Functions
4.1 Torque/Force Control
This is the torque/force control-dedicated mode.
This control mode inputs the torque/force reference from CMD-IN (CN1-3 & CN1-4).
4.2 Protection Sequence Design
This section describes the methods for integrating a protective sequence for safety purposes
using I/O signals from the digital torque amplifier.
Servo Alarm Output
The basic method for continuing alarm-related “output signals” is shown below.
Prepare an external 24V usage power source. No 24V power source is integrated in the digital
torque amplifier. The photocoupler output signal is handled as follows:
The output is “ON” when the digital torque amplifier detects an error.
Output → ALM+ CN1-34 Servo Alarm Output
Output → ALM- CN1-35
Signal ground for servo alarm
output
C M D -IN
Amplifier
C N 1-3
S G C N 1-4
CMD-IN
CN1-3
CN1-4 SG
D igital Torque A m plifier
CN1-34
CN1-35
ALM+
ALM-
24V P ow er
+24V 0V
P hotocoupler
Photocoupler Output per
Output
Max. Usage voltage: DC30V
Max. Usage Current: :DC50mA
MAX 50mA
Digital Torque Amplifier