8
Digitax ST User Guide
Issue: 5
2 Product information
2.1 Introduction
The Digitax ST family of servo drives are available with five levels of
intelligence:
•
Digitax ST Base
•
Digitax ST Indexer
•
Digitax ST Plus
•
Digitax ST EZMotion
•
Digitax ST EtherCAT
The Digitax ST Base drive operates in velocity or torque modes and is
designed to operate with a centralized motion controller or as a
standalone drive.
The Digitax ST Indexer drive performs point-to-point motion profiling
including relative, absolute, rotary plus, rotary minus, registration and
homing motion. The Digitax ST Indexer will operate as a single
standalone system controller. Alternatively, the Digitax ST Indexer can
form part of a distributed system where commands are sent over a
fieldbus or through digital input/output signals. The Digitax ST Indexer
drive is commissioned using a simple and easy to use indexing tool that
resides within CTSoft, a set-up tool for Emerson Industrial Automation
products.
The Digitax ST plus drive offers all the features available o the Digitax
ST Indexer drive with the addition of performing complex motion as a
single axis or synchronized to a reference axis. This offers digital lock
and electronic camming via a virtual master reference. The Digitax ST
Plus drive is commissioned using a simple and easy to use indexing tool
that resides within CT Soft, a set-up tool for Emerson Industrial
Automation products.
For more complex systems using the Digitax ST Indexer and Digitax ST
Plus drives, an export feature is available that allows the user to import
applications into SYPTPro for further development.
The Digitax ST EZMotion drive is part of the Motion Made Easy family of
servo drives and allows the user to create programs to sequence
motion, I/O control, and other machine operations in one environment.
Digitax ST EZMotion also supports advanced functions such as a
Position Capture Object, Multiple Profile Summation, Queuing, and
Program Multitasking.
The Digitax ST EtherCAT drive offers onboard EtherCAT allowing the
product to be connected to an EtherCAT network as a slave device. It
can be used in a variety of applications, including those requiring
accurate synchronization and precise motion control.
All variants provide a Safe Torque Off function.
Four documentation guides are available for Digitax ST, these cover all
variants:
All guides are available for download at:
http://www.emersonindustrial.com/en-EN/controltechniques/downloads/
userguidesandsoftware/Pages/downloads.aspx
or
www.emersonindustrial.com/en-EN/leroy-somer-motors-drives/
downloads/Pages/manuals.aspx
Installation Guide (packed with product)
•
Designed to be used by an "Electrician/Wireman" installing the drive
(FIGS Available).
Technical Data Guide
•
Designed as a reference guide for experienced drive users (FIGS
Available).
User Guide
•
Designed as a step by step guide to help the user become familiar
with the product, and as a reference guide for experienced drive
users (FIGS Available).
Advanced User Guide
•
In-depth parameter descriptions.
2.2 Drive ratings
The drive rating is limited by numerous systems which protect the power
stage hardware. (Rectifier, DC bus, inverter)
These systems come into operation under various extremes of operating
conditions. (I.e. ambient, supply imbalance, output power.)
2.2.1 Maximum ratings
Table 2-1 Maximum ratings
*The maximum rating information, in Table 2-1 above, for the 200 V
single phase supply, illustrates a 200 % overload capability. When the
Digitax ST 120x is used with a single phase supply it is possible to
achieve the three phase nominal current rating as long as the single
phase peak current rating is observed.
The rating information shown in section 2.3
page 9 is based on the limitations of the drive output stage only.
The ratings are based on the following operating conditions:
•
Ambient temperature = 40
°
C
•
Altitude = 1000 m
•
Not exceeding power ratings
•
DC bus voltage = 565 V for DST140X
•
DC bus voltage = 325 V for DST120X
The sizing tool should be used to select a drive for a profile or condition
that is not given as an example in section 13.1.2
Model
No of input
phases
Nominal current
I
n
Peak current
I
MAX
A
A
DST1201
1
1.1*
2.2
DST1202
1
2.4*
4.8
DST1203
1
2.9*
5.8
DST1204
1
4.7*
9.4
DST1201
3
1.7
5.1
DST1202
3
3.8
11.4
DST1203
3
5.4
16.2
DST1204
3
7.6
22.8
DST1401
3
1.5
4.5
DST1402
3
2.7
8.1
DST1403
3
4.0
12.0
DST1404
3
5.9
17.7
DST1405
3
8.0
24.0
Summary of Contents for Digitax ST
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