NSK Megatorque M-EDC-PN2012 Series, User Manual

Page: 15 / 32

3. Analog Input function
！
Caution
：
Constrain of motor speed
・
Each motor type has its maximum speed. Check the maximum speed in the
specification sheet.
・
The parameter VL (Velocity limiter) depends on parameter FR (Feedback signal
resolution).
！
Caution
：
Positioning control by external controller
・
Due to the speed limit of feedback signal and the resolution of analog command,
performance such as high speed and high precision which are expected by using
standard type EDC Driver Unit or CC-Link Type EDC Driver Unit may not exhibited by
external controller.
3.1. Interfacing
3.1.1. Analog Command Input
Applied input: AIN +, AIN –
Table 3-1: Specifications of analog command input
Item Specification
Max. input voltage
± 10 [VDC]
Input impedance
20 [ k
Ω]
Maxi. input current 0.5 [mA]
ADC resolution 12 [bits]
Effective resolution
Typical 10 [bits]
Offset error
±
13 [ %] of maximum input voltage
Figure 3-1:Analog input specification
Driver Unit side
20 [k
Ω
]
AIN +
AIN –
–
+
User’s controller side
— 3-1 —