Yaskawa FSP Amplifier - Manual (Page 45)

FSP Amplifier User’s Manual Chapter 3: Wiring
3-20
3.4.4. Interface Circuits
This section shows examples of servo amplifier I/O signal connection to
the host controller.
„ Interface for Reference Input Circuits
Analog Input Circuit
Analog signals are either speed or torque reference signals at the
impedance below.
• Speed reference input: About 14 kΩ
• Torque reference input: About 14 kΩ
The maximum allowable voltage for input signals is ±12 V.
FSP Amplifier
Reference Position Input Circuit
An output circuit for the reference pulse and error counter clear signal at
the host controller can be either line-driver or open-collector outputs. These
are shown below by type.
• Line-driver Output Example:
FSP Amplifier
Applicable line-driver
SN75174
manufactured by Texas
Instruments or the
equivalent.
• Open-collector Output, Example 1: External power supply
FSP Amplifier