Introduction; Outline - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
1.

Introduction

1.1

Outline

The FX -20SSC-H type positioning block (hereinafter referred to as 20SSC-H) is a special function block
3U
applicable to SSCNET III.
20SSC-H can perform positioning control by servo motor via an SSCNET III applied servo amplifier.
1. 2-axis control is possible
One 20SSC-H controls 2 axes.
20SSC-H applies the 1-speed positioning and interrupt 1-speed constant quantity feed operations for
constant quantity feed control, and also the linear interpolation and circular interpolation operations.
2. Connection to servo amplifier by SSCNET III is possible
The 20SSC-H connects directly to the MELSERVO (our company's servo amplifier: MR-J3-B) via SSCNETIII.
• Connection using the SSCNET III cable between the 20SSC-H and the servo amplifier reduces wiring.
(Maximum length is 50m.)
• With SSCNET III cables (optical communication), connections are less susceptible to electromagnetic
noise, etc. from the servo amplifier.
• Setting the servo parameters on the 20SSC-H side and writing/reading the servo parameters to/from the
servo amplifier using SSCNET III is possible.
• Current values and error descriptions from the servo amplifier can be checked with the buffer memories of
the 20SSC-H.
3. Easy application of absolute position detection system
• The servo amplifier with absolute position detection enables the absolute positioning detection system.
• Once the zero position is established, the zero return operation at power startup is not necessary.
• The absolute position system allows establishment of the zero position by the data set type zero return.
In this case, wiring for near-point DOG, etc. is not required.
4. Easy maintenance
Various data such as positioning data, parameters, etc. can be saved to the flash memory (ROM) in the
20SSC-H.
This allows the data to be saved without a battery.
5. Connectable PLC
• The connected FX
• For connection to the FX
or FX PLC reads/writes the positioning data from/to the 20SSC-H.
3U 3UC
PLC, the FX -CNV-IF or FX
3UC 2NC
→ For positioning control, refer to Chapter 9.
-1PS-5V is needed.
3UC
1 Introduction
1.1 Outline
1
2
3
4
5
6
7
8
9
10
15