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ABB ACS255 User Manual
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21
5.4.
Compatibility with IT (ungrounded) and corner-grounded TN systems
WARNING!
EMC
filters
s
hould
not
be
used
w
hen
installing
t
he
drive
on
an
IT
system
(an
ungrounded
power
system
or
high-resistance-grounded
power
system,
otherwise
the
sy
stem
will
be
connec
ted
to
ground potential through the EMC capacitors. This may cause danger or damage to the EMC filte
r.
If you have an IT (ungrounded) system or corner-grounded TN system, disconnect the internal Varistor
screw as shown below.
19
21
Table of Contents
Default Chapter
4
Table of Contents
4
Easy Start-Up Guide
6
ACS255 - IP66 (600V Variants) EASY START-UP GUIDE
7
2 Safety
9
What this Chapter Contains
9
Use of Warnings
9
Safety in Installation and Maintenance
9
Safety in Start-Up and Operation
10
3 General Information and Ratings
12
Type Designation Key
12
Drive Model Numbers - IP20
13
Drive Model Numbers - IP66
13
4 Mechanical Installation
14
General
14
Before Installation
14
UL Compliant Installation
14
Mechanical Dimensions and Weights
14
Guidelines for Enclosure Mounting (IP20 Units)
16
Mounting the Drive - IP20 Units
16
Guidelines for Mounting (IP66 Units)
17
Removing the Terminal Cover
17
Routine Maintenance
17
5 Electrical Installation
18
Grounding the Drive
18
Wiring Precautions
19
Incoming Power Connection
19
Compatibility with IT (Ungrounded) and Corner-Grounded TN Systems
20
Drive and Motor Connection
21
Motor Terminal Box Connections
21
Motor Thermal Overload Protection
21
Control Terminal Wiring
21
Connection Diagram
22
Safe Torque off
23
6 Managing the Keypad
27
Keypad Layout and Function
27
Changing Parameters
27
Resetting Parameters to Factory Default Settings
28
Advanced Keypad Operation Shortcuts
29
Drive Operating Displays
29
7 Quick Start-Up and Control
30
Quick Start-Up Terminal Control
30
Quick Start-Up Keypad Control
30
Sensorless Vector Speed Control Mode
31
8 Application Macros
32
Overview of Macros
32
Macro Wiring Configurations
33
9 Parameters
37
Parameter Structure
37
Parameters in the Short Parameter Mode
38
Read Only Status Parameters
40
Parameters in the Long Parameter Mode
42
Preventing Un-Authorized Parameter Editing
53
10 Serial Communications
54
RJ45 Connector Pin Assignment
54
Modbus RTU Communications
54
11 Technical Data
58
Environmental
58
Input/Output Current Ratings and Fuses
58
Overload
58
Additional Information for UL Approved Installations
59
Derating Information
59
12 Appendix: Permanent Magnet Synchronous Motors (Pmsms)
60
13 Troubleshooting
61
Fault Messages
61
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ABB ACS255 Specifications
General
Brand
ABB
Model
ACS255
Category
Controller
Language
English
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