ABB ACS255 Technical Catalog
Low Voltage AC Drives
ABB Micro Drives
ACS255
0.5 to 20 hp / 0.37 to 15 kW
Catalog
Selecting and ordering your drive
Type designation is a unique reference number that clearly
identifies the drive by construction, power and voltage
rating and selected options. Using the type designation
you can specify your drives from the wide range of options
available. Options are added to the type designation using the
corresponding “plus” (+) code.
Type designation:
AC255 - 0XU - 0XAX - X + XXXX
Product series
Ratings and types
Voltages
Constructions
Options
Build up your own ordering code using the type designation
key below or contact your local ABB drives sales office and let
them know what you want.
2 ABB ACS255 Technical Catalog
ACS255, micro drive
Table of contents
ACS255
Introduction 4
Main features 5
ACS255-IP20
Overview 6
Data sheet 7
Ratings and types 8
Dimensions and weights 9
ACS255-IP66
Overview 10
Data sheet 11
Ratings and types 12
Dimensions and weights 13
Technical data
Cooling 14
Fuses and cable sizes 15
Control connections for 115, 240 and 480 V 16
Control connections for 600 V 17
Options
Options 18
Braking resistors
Single-phase 19
Three-phase 20
Resistor technical data 23
CR case resistor 24
GCE resistor 25
Installation instructions 26
Reactors
Input reactors 27
Output filters 32
Life cycle management
Life cycle management 35
ABB ACS255 Technical Catalog 3
Introduction to the ACS255
ACS255 IP20 ACS255 IP66 - NEMA 4X
Main attributes
Feed-thru wiring, embedded Modbus-RTU, built-in
macros for simple machine interface
HP range
1~115 V - 0.5 to 1.5 HP
3~600 V - 0.75 - 20 HP
Voltage range
1~120 V In / 3~ 230 V Out
3~600 V In / Out
Enclosure type
UL type 0 (IP20) UL type 4X (IP66)
Control mode
Scalar (V/Hz) variable torque and constant torque V/
Hz profiles
Communications options
Embedded Modbus-RTU Embedded Modbus-RTU
Operator interface Operator interface
Integral and/or
remote mount keypad
Wide range of input voltages, high protection
class enclosure for harsh environments,
Modbus-RTU as standard
1~115 V - 0.5 to 1.5 HP
1~230 V - 0.5 to 5 HP
3~230 V - 0.5 to 5 HP
3~460 V - 1 to 10 HP
3~600 V - 0.75 - 15 HP
1~115 V In / 3~230 V Out
1~230 V In / 3~230 V Out
3~230 V In / Out
3~460 V In / Out
3~600 V In / Out
Scalar (V/Hz) variable torque and constant torque
V/Hz profiles
Integral and/or
remote mount keypad
4 ABB ACS255 Technical Catalog
Main features
ACS255 - 0XU - 0XAX - X
Overview
The new ACS255 drive is an enhanced verison of the popular
ACS250 drive series. New features include: sensorless vector
control for both AC induction and PM motors, enhanced short
circuit protection, and operating mode selection. New ratings
have been added to fill out the product line.
All of the existing features of the ACS250 - parameters, external dimensions, mounting locations, etc. - are the same for the
ACS255. An Advanced parameter menu has been added for
additional functionality.
The ACS255 drive is a part of ABB’s complete range of micro
drives, offering a solution for every need. The IP20 drives offer
115V and 600V options to enhance other IP20 product lines.
The IP66 drives have a complete input voltage range from 115
to 600V.
ACS255 variable frequency drives feature an intuitive integrated
control panel with LED display. Built-in macros and only the
essential parameters make commissioning straightforward.
Built-in Modbus-RTU serial communication provides ready
integration with control and monitoring systems.
ACS255 micro drives are compact and offer flexible mounting
options without the need for accessory mounting kits. Rapid
programming and commissioning are possible using the on
board setup macros. The copy stick tool can be used to transfer parameter sets between drives.
Highlights
− Power range: 0.5 to 20 Hp, 1 & 3 phase input
− 150% peak overload capacity
− Modbus-RTU built-in
− User-friendly control panel with LED display
− Wall or DIN rail mounting options for IP20 drives
− Feed thru wiring on IP20 drives
− PI control
− Built-in brake chopper (Sizes 2 & 3)
− Sensorless vector and V/Hz control - all voltages
− Safe Torque Off (STO) (600V drives only)
− Conformally coated boards
− Operating mode selection
− Easy access to power and I/O connections for rapid instal-
lation
− Selection options for braking resistors, input reactors, &
output filters
Applications
− Conveyors
− Mixers
− Material handling
− Fans and pumps
− Automated Gate Control
− Food and Beverage
− Printing
− Woodworking Machinery
The ACS255 drive is ideal for panel builders and OEM’s needing a micro drive with low cost, flexible mounting options, and
rapid parameter setup.
Feature Advantage Benefit
Simple interface Integrated keypad and display is easy to learn and makes commissioning
Drive & network
connectivity
IP66 Construction with
Optional Controls
Full voltage range in IP66
drives
Feed Through Wiring &
Flexible Mounting Options
(IP20 Drives)
600V Ratings in IP20 and
IP66 Enclosures
straightforward
ABB common programming parameter structure
RS485 serial interface with embedded Modbus RTU for real time control
(or monitoring)
RJ45 connection port can be used with:
Optional Y-splitter for daisy chain networking
Remote control panel
Copy Stick tool for transferring parameters between drives
Optional operator controls: Disconnect, Fwd/Off/Rev, & Speed
Potentiometer
Dust and water proof design built with tough ABS plastic cover, epoxy
coated heatsink that withstands high pressure washdown for food and
beverage applications.
Optional operator controls allows mounting directly on processing
equipment located in extreme environments
IP66 offering throughout the voltage range - 110V to 600V
Global input voltage range to cover a wide range of application
Allows for easy replacement of motor starters or soft starters in existing
panels with power wires in at the top and motor cables out at the bottom
Flexible mounting options - wall or DIN rail
600V capacity in a micro drive with Safe Torque Off (SIL2) Panel design standardization with compact micro
Time and labor cost savings with rapid setup and
commissioning
Flexibility with RJ45 connectivity options
Time savings with simple plug-and-play connectivity
Save panel building cost
Less cost due to shorter motor cables with machine
mounted drive
Operator controls located on the machine
Standardize on one supplier with global input
voltage range save procurement and inventory cost
Saves time and material cost for panel builders
drive sizing in a 600V drive - similar to 115, 230, &
460Vmicro drives
ABB ACS255 Technical Catalog 5
ACS255 IP20
Overview
Replacing a motor starter or soft starter with a drive can help
your customer improve their overall energy efficiency, reduce
mechanical stresses and enhance their process control. With
its feed-thru wiring, the ACS255 can easily replace motor
starters for general purpose low power applications, such as;
augers, mixers, pumps, fans and conveyors. The key features
include a integrated keypad for easy configuration, precise
process control with an enhanced V/Hz control with variable
torque and constant torque V/Hz profiles, sensorless vector
control and embedded, Modbus-RTU communication
interface for real time control and monitoring.
Main features
− Integrated display and keypad
− Feed-thru wiring
− 50°C no de-rate / 60°C max.
− Built-in macros and only the essential parameters make
commissioning straightforward
− Enhanced V/Hz control (all models)
− Open loop vector - speed & torque control - for AC Induc-
tion and permanent magnet motors
− Operating Mode Select quickly configures current limit,
torque characteristic and spin start parameters for Industrial,
Pump, or Fan applications
− Adjustable current limit
− Power loss ride-through
− DC injection braking
− DC magnetizing start (provides maximum starting torque)
− Internal braking chopper (except frame E1)
− Modbus-RTU fieldbus as standard
− Open loop vector - speed & torque control
(600 V only)
− SIL2 Safe torque-off (600 V only)
− Integrated help card
Applications
− Variable torque, constant torque or constant horsepower
applications requiring a compact drive solution for cabinet
mounting
Capabilities
− V /Hz and sensorless vector control with peak overload
capacity of 175%
− Feed-thru wiring DIN rail mountable IP20 enclosure
− Intuitive integrated keypad
− Designed to be easy to program for simple machine inter-
face
6 ABB ACS255 Technical Catalog
ACS255 IP20
Data sheet
0.5 thru 1.5 HP (1~115 V In/ 3~230V Out) 1 thru 20 HP (3~600 V In/Out)
Performance features
Drive specifications
Protective features
Agency certifications
Service conditions
Control modes 115 VAC: V/Hz and open loop vector
Operator interface module Integral drive mounted
Display lines 6-character LED display
Programmable preset
speeds
Analog output: one One (0-10 VDC)
Auto restart Yes – up to 5 attempts
Frequency avoidance One band
Fault history Last four faults
Digital inputs: four Two programmable digital inputs, two user selectable analog/digital inputs
Digital inputs type Pull-up
Analog inputs: two 0-10 VDC, 4 to 20mA
Relay output: one Built-in form C relay
Analog output / digital
outout
Overload capacity Drive output 150% for one minute and 175% for 2 seconds
Maximum load 1.5 HP @ 120 V In/230 V Out, 20 HP @ 600 V In/Out
Input voltage ranges 115 VAC (99-126); 600 VAC (450-660)
Rated input frequency 50-60 Hz (±5%)
Carrier frequency 4-32 kHz (8 kHz default)
Operating temperature -10° to 50°C
Snubber (dynamic braking) Built-in transistor (frames 2 and 3)
Dynamic braking external Up to 150% dynamic braking with appropriately sized resistor
DC injection braking Included
Volts/Hz Linear V/Hz, user defined, energy optimizer & boost function
Sensorless vector Speed and torque with autotune for AC induction and permanent magnet
Frequency control range 0-500 Hz
Accel/decel: Independently adjustable accel. & decel. ramps
Time range 0.00 to 600.0 Seconds
Keypad speed control Ye s
Sink/source inputs Source, 24 VDC logic
Electronic overload trip Electronic motor overload inverse 150% for 1 minute or 175% for 2 seconds
Communications Built-in Modbus-RTU (RS-485) communications
PI control Built-in
Under voltage Level depends on voltage class
Output short circuit Phase-to-phase on drive output
Over temperature Heat sink monitor
DC bus overvoltage DC bus level trip
Drive overload Exceed drive rating of 150% for one minute or 175% for 2 seconds
Over current Over-current/short-circuit protection
Output phase Trips on open output phase
Loss of reference Trips on loss of speed command signal
Communication error Detects a communication error (fault)
Altitude 1,000 m (3,300 ft.), derate by 1% per 100M up to 2,000 on maximum
Ambient temperature -10°C (14°F) to 50°C (102°F)
Storage temperature: -40°C (-40°F) to 60°C (140°F)
Relative humidity 10% to 95%, non-condensing
600 VAC: V/Hz and open loop vector
Four
0-10 VDC: one analog usable for meter (freq., current, voltage) or digital
output
motors
UL, cUL, CE, C-tick, gost
ABB ACS255 Technical Catalog 7
ACS255, IP20
Ratings and types
ACS255 - 0XU - 0XAX - X
Type designation
This is the unique reference number (shown above and in
the first column, below) that clearly identifies your drive by
power rating and frame size. Once the drive’s type designation
has been selected, the frame size (column 7) can be used to
determine the drive dimensions, shown on the next page.
Voltages
ACS255 is available in two voltage ranges:
1 = 110 to 120 V
6 = 500 to 600 V
Insert either “1” or “6”, depending on your chosen voltage, into
the type designation shown above.
Construction
“01U” within the type designation (shown above) varies
depending on the drive phase and EMC filtering. Choose below
the one you need.
01 = 1-phase
03 = 3-phase
U = No EMC filter
Type code Braking chopper
1-phase supply voltage 110 to 120 V, +/-10%, 3-phase output 200 to 240 V
ACS255-01U-02A3-1 --- 0.5 0.37 2.3 2.2 E1
ACS255-01U-04A3-1 --- 1 0.75 4.3 2.2 E1
ACS255-01U-05A8-1 STD 1.5 1.1 5.8 3.75 E2
3-phase supply voltage 500 to 600 V, +/-10%
ACS255-03U-02A1-6 STD 1 0.75 2.1 4.0 P2
ACS255-03U-03A1-6 STD 2 1.5 3.1 4.0 P2
ACS255-03U-04A1-6 STD 3 2.2 4.1 4.0 P2
ACS255-03U-06A5-6 STD 5 4.0 6.5 4.0 P2
ACS255-03U-09A0-6 STD 7.5 5.5 9 4.0 P2
ACS255-03U-12A0-6 STD 10 7.5 12 7.7 P3
ACS255-03U-17A0-6 STD 15 11 17 7.7 P3
ACS255-03U-22A0-6 STD 20 15 22 7.7 P3
Notes:
I
: continuous base current with 110% overload for 1 minute / 10 minutes.
2N
: Typical motor power for most 4-pole NEMA motors in normal use.
P
N
(included)
PN
HP
PN
kW
Output
current
I2N
A
Weight
lbs
Frame size
8 ABB ACS255 Technical Catalog
ACS255, IP20
12
Dimensions and weights
W
H
120 V
D
Dimensions and weights
Frame
size
Height Width Depth Weight
IP20 120 V
Dimension
drawing
in mm in mm in mm lb kg
E1 6.81 173 3.23 82 4.84 123 2.20 1 3AXD10000274006
E2 8.70 221 4.29 109 5.91 150 3.75 1.70 3AXD10000274008
H = Height
W = Width
D = Depth
W
D
12
H
600 V
Dimensions and weights
Frame
size
Height Width Depth Weight
IP20 600 V
Dimension
drawing
in mm in mm in mm lb kg
P2 8.70 221 4.41 112 7.28 185 4 1.80 3AXD10000274014
P3 10.28 261 5.16 131 8.07 205 7.70 3.50 3AXD10000274016
H = Height
W = Width
D = Depth
ABB ACS255 Technical Catalog 9
ACS255, IP66
Overview
Screws, mixers, pumps, fans and conveyors are commonly
installed in harsh environments containing dust, moisture
and chemicals. The IP66/NEMA 4X ACS255 was designed
to thrive in these types of conditions. The drive’s design and
ease of setup benefit a broad range of industries that require
machine mounted drives.
Hygienic protection
The drive was designed with materials that meet stringent hygiene standards, preventing the drive from trapping bacteria.
The integrated keypad provides straightforward drive commissioning and maintenance in extreme environments. The drive’s
sealed ABS enclosure and corrosion-resistant heat sink are
ideal for wash-down applications.
Main features
− Built-in macros and only the essential parameters make
commissioning straightforward
− Can be mounted directly on processing equipment installed
in extreme environments
− Conduit cable entry
− Intuitive keypad control
− Optional switch features; speed potentiometer,
− FWD-OFF-REV and disconnect switches
− IP66/NEMA 4X dust and waterproof design
− Designed for wash-down applications
− Specially coated corrosion-resistant heat sink
− Sealed top cover with separate terminal access cover pro-
vides ready access without exposing components
− Widely spaced heat sink fans with no external fans to fail or
get clogged in washdown environments
− Modbus-RTU fieldbus as standard
− Built-in brake chopper (except frame E1)
− Safe torque off function (SIL2) which can be used as
emergency stop or to prevent unexpected startup (600 V
only)
− Open loop vector speed and vector torque control mode
for AC induction and permanent magnet motors - all
ACS255 drives
− Operating Mode Select quickly configures current limit,
torque characteristic and spin start parameters for Industrial, Pump, or Fan applications
Applications
− Variable torque, constant torque or constant horsepower
applications in harsh environments or requiring on machine
mounting
Capabilities
− NEMA 4X IP66 enclosure for indoor use
− V/Hz control with peak overload capacity of 175%
− Embedded Modbus-RTU
− Intuitive integrated keypad
− Designed to be easy to program for simple machine inter-
face local control & disconnect
10 ABB ACS255 Technical Catalog
ACS255, IP66
Data sheet
0.5 thru 1.5 HP (1~115 V In/ 3~230V Out) 0.5 thru 3 HP (1~230 V In/ 3~230V Out)
0.5 thru 5 HP (3~230 V In/Out) 1 thru 10 HP (3~460 V In/Out) 1 thru 15 HP (3~600 V In/Out)
Performance features
Drive specifications
Protective features
Agency certifications
Service conditions
Control modes
Operator interface module Integral drive mounted
Display lines 6-character LED display
Programmable preset
speeds
Analog output: one One (0-10 VDC)
Auto restart Yes- Up to 5 attempts
Frequency avoidance One band
Fault history Last four faults
Digital Inputs: four Three configurable inputs
Digital inputs type Pull-up
Analog inputs: two 0-10 VDC, 4 to 20mA
Relay output: one One built-in form C relay
Analog output / digital
output
Maximum load 5 HP @ 230 VAC, 10 HP @ 460 VAC, 15 HP @ 600 VAC
Overload capacity Drive output 150% for one minute and 175% for 2 seconds
Input voltage ranges 115 VAC (99-126); 230 VAC (198-264); 460 VAC (342-528); 600 VAC (450-660)
Rated input frequency 50-60 Hz (±5%)
Carrier frequency 4-32 kHz (8 kHz default)
Operating temperature -10° to 40°C
Snubber (dynamic braking) Built-in transistor (frames 2 and 3)
Dynamic braking external Up to 150% dynamic braking with appropriately sized resistor
DC injection braking Included
Volts/Hz Linear V/Hz, user defined, energy optimizer & boost function
Sensorless vector Speed and torque with autotune for AC induction and permanent magnet motors
Frequency control range 0-500 Hz
Accel/decel: Independently adjustable accel. & decel. ramps
Time range 0.00 to 600.0 seconds
Keypad speed control Yes
Sink/source inputs Source, 24 VDC logic
Electronic overload trip Electronic motor overload inverse 150% for 1 minute or 175% for 2 seconds
Communications Built-in Modbus-RTU (RS-485) communications
PI control Built-in
Under voltage Level depends on voltage class (120, 240, 480, or 575)
Output short circuit Phase-to-phase on drive output
Over temperature Heat sink monitor
DC bus overvoltage DC Bus level trip
Drive overload Exceed drive rating of 150% for one minute or 175% for 2 seconds
Over current Over-current/short-circuit protection
Output phase Trips on open output phase
Loss of reference Trips on loss of speed command signal
Communication error Detects a communication error (fault)
Altitude 1,000 m (3,300 ft.), derate by 1% per 100M up to 2,000m maximum
Ambient temperature -10°C (14°F) to 40°C (122°C)
Storage temperature: -40°C (-40°F) to 60°C (140°F)
Relative humidity 10% to 95%, non-condensing
Intermittent overload
115-460 VAC: V/Hz and open loop vector
600 VAC: V/Hz and open loop vector
Four
0-10 VDC: one analog usable for meter (freq., current, voltage) or digital output
UL, cUL, CE, C-tick, Gost
150% overload capacity for up to 1 minute, 175% overload capacity for up to 2
seconds
ABB ACS255 Technical Catalog 11
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