Fuses
Fuse rating recommendation values given on page 59
Help Card
Display
Keypad Operation can be found in section 6 and 7.2
IMPORTANT!
HARDWARE ENABLE FUNCTION
7
Run – Stop 10K Speed Pot
Link the terminals as shown, optionally through switch contacts, to
enable the drive.
Control Terminals
Based on the factory default parameter settings
Close the switch to run (enable), open to stop
Motor Cable
o Cable size recommendation values given on page 59.
o Observe the maximum permissible motor cable length
o For Motor cable lengths > 50 metres, an output filter is
recommended
oUse a screened (shielded cable)
Motor Connection
Check for Star or Delta Connection according to the motor voltage rating
(See page 22)
Enter the Motor Nameplate Data into the drive Parameters as follows
o Motor Rated Voltage : 9905
o Motor Rated Current : 9906
o Motor Rated Frequency : 9907
o Motor Rated Speed (Optional) : 9908
Page 7
8
M
1912 13
Fuse rating
recommendation
values given on
page 59
AC Supply Connection
500 – 600 Volts + / - 10%
ACS255 – IP66 (600V Variants) EASY START-UP GUIDE
Display
Keypad Operation can be found
In Section 6 and 7.2.
IMPORTANT
HARDWARE ENABLE
Link the terminals as shownAbove, optionally through switch
contacts to enable the drive
Control Terminals
Run / Stop 10K PotClose theswitch to run(enable)
Open the switch to stop
Motor Cable
Cable size recommendation values given
on page 59.
Observe the maximum permissible motor
cable length
For Motor cable lengths > 50 metres, an
output filter is recommended
Use a screened (shielded) cable. The shield
should be bonded to earth at both ends
Motor Connection
Check for Star or Delta Connection according
to the motor voltage rating (See page 22).
Enter the Motor Nameplate Data into the
drive Parameters as follows
Motor Rated Voltage : 9905
Motor Rated Current : 9906
Motor Rated Frequency : 9907
Motor Rated Speed (Optional) : 9908
Page 8
Declaration of Conformity:
EN 61800-5-1: 2007
Adjustable speed electrical power drive systems. Safety requirements. Electrical, thermal and energy.
EN 61800-3 2nd Ed: 2004
/ A1:2012
Adjustable speed electrical power drive systems. EMC requirements and specific test methods
EN 55011: 2007
Limits and Methods of measurement of radio disturbance characteristics of industrial, scientific and
medical (ISM) radio-frequency equipment (EMC)
EN60529 : 1992
Specifications for degrees of protection provided by enclosures
Standard
Classification
Independent Approval
EN 61800-5-2:2007
Type 2
*TUV
EN ISO 13849-1:2006
PL “d”
EN 61508 (Part 1 to 7)
SIL 2
EN60204-1
Uncontrolled Stop “Category 0”
EN 62061
SIL CL 2
Drive Type / Rating
EMC Category – Conducted Emissions
First Environment Category C1
First Environment Category C2
Second Environment Category C3
ACS255..
Use additional External EMC Filter
Note
Compliance with EMC standards is dependent on a number of factors including the environment in which the drive is installed,
motor switching frequency, motor, cable lengths and installation methods adopted.
For motor cable lengths greater than 100m, an output dv / dt filter must be used, please refer to the (please refer to the
http://www.abb.com/ProductGuide/ for further details).
Vector Speed and Torque control modes may not operate correctly with long motor cables and output filters. It is recommended to
operate in V/F mode only for cable lengths exceeding 50m.
ABB Drives Ltd hereby states that the ACS255 product range conforms to the relevant safety provisions of the following council directives:
2014/30/EU (EMC) and 2014/35/EU (LVD)
2011/65/EU (RoHS)
STO Function
ACS255 incorporates a hardware STO (Safe Torque Off) Function, designed in accordance with the standards listed below.
*Note : TUV Approval of the “STO” function is relevant for drives which have a TUV logo applied on the drive rating label.
Electromagnetic Compatibility
It is the responsibility of the installer to ensure that the equipment or system into which the product is incorporated complies with the EMC
legislation of the country of use. Within the European Union, equipment into which this product is incorporated must comply with the EMC
Directive 2004/108/EC. When using an ACS255 with an internal or optional external filter, compliance with the following EMC Categories, as
defined by EN61800-3:2004 can be achieved:
9
All rights reserved. No part of this User Guide may be reproduced or transmitted in any form or by any means, electrical or mechanical including
photocopying, recording or by any information storage or retrieval system without permission in writing from the publisher.
The manufacturer accepts no liability for any damage caused during or resulting from transport, receipt of delivery, installation or
commissioning. The manufacturer also accepts no liability for damage or consequences resulting from inappropriate, negligent or incorrect
installation, incorrect adjustment of the operating parameters of the drive, incorrect matching of the drive to the motor, incorrect installation,
unacceptable dust, moisture, corrosive substances, excessive vibration or ambient temperatures outside of the design specification.
Contents of this User Guide are believed to be correct at the time of printing. In the interest of a commitment to a policy of continuous
improvement, the manufacturer reserves the right to change the specification of the product or its performance or the contents of the User
Guide without notice.
This User Guide is for use with version 2.0 Firmware.
User Guide Revision A
This user guide is the “original instructions” document. All non-English versions are translations of the “original instructions”.
The manufacturer adopts a policy of continuous improvement and while every effort has been made to provide accurate and up to date
information, the information contained in this User Guide should be used for guidance purposes only and does not form the part of any contract.
Page 9
10
Electricity warning warns of hazards from electricity which can cause physical injury and/or damage to
the equipment.
General warning warns about conditions, other than those caused by electricity, which can result in
physical injury and/or damage to the equipment.
WARNING! Ignoring the instructions can cause physical injury or death, or damage to the equipment.
Only qualified electricians are allowed to install and maintain the drive!
2. Safety
What this chapter contains
This chapter contains the safety instructions which you must follow when installing, operating and servicing the drive. If ignored,
physical injury or death may follow, or damage may occur to the drive, motor or driven equipment. Read the safety instructions before
you work on the unit.
Use of warnings
Warnings caution you about conditions which can result in serious injury or death and/or damage to the equipment and advice on how
to avoid the danger. The following warning symbols are used in this manual:
Safety in installation and maintenance
These warnings are intended for all who work on the drive, motor cable or motor.
Electricity safety
Never work on the drive, motor cable or motor when input power is applied. After disconnecting the input power, always
wait for 10 minutes to let the intermediate circuit capacitors discharge before you start working on the drive, motor or motor
cable.
Always ensure by measuring with a multimeter (impedance at least 1 Mohm) that:
1. There is no voltage between the drive input phases L1, L2 and L3 and the ground.
2. There is no voltage between terminals + and BR and the ground.
Do not work on the control cables when power is applied to the drive or to the external control circuits. Externally supplied
control circuits may carry dangerous voltage even when the input power of the drive is switched off.
Do not make any insulation or voltage withstand tests on the drive.
Be sure the system is properly grounded before applying power. Do not apply AC power before you ensure that all grounding
instructions have been followed. Electrical shock can cause serious or fatal injury
Note:
Even when the motor is stopped, dangerous voltage is present at the power circuit terminals L1, L2, L3 and U, V, W and + and BR.
Page 10
General safety
WARNING! Ignoring the following instructions can cause physical injury or death, or damage to the equipment.
The drive is not field repairable. Never attempt to repair a malfunctioning drive; contact your local ABB representative or
Authorized Service Centre for replacement.
Make sure that dust from drilling does not enter the drive during the installation. Electrically conductive dust inside the drive may
cause damage or lead to malfunction.
Ensure sufficient cooling.
Safety in start-up and operation
These warnings are intended for all who plan the operation, start up or operate the drive.
11
WARNING! Ignoring the following instructions can cause physical injury or death, or damage to the equipment.
Before adjusting the drive and putting it into service, make sure that the motor and all driven equipment are suitable for
operation throughout the speed range provided by the drive. The drive can be adjusted to operate the motor at speeds
above and below the speed provided by connecting the motor directly to the power line.
Do not activate automatic fault reset functions if dangerous situations can occur. When activated, these functions reset the
drive and resume operation after a fault.
Do not control the motor with an AC contactor or disconnecting device (disconnecting means); use instead the control panel
start and stop keys and or external commands (I/O). The maximum allowed number of charging cycles of the DC capacitors
(that is, power-ups by applying power) is two per minute.
Note:
When parameter 1103 PRIMARY COMMAND SOURCE MODE is not set to 1 or 2, the stop key on the control panel will not
stop the drive. To stop the drive open terminal 2 of the drive control terminals.
Page 11
12
Danger : Indicates a risk of electric shock, which, if not
avoided, could result in damage to the equipment and
possible injury or death.
Danger : Indicates a potentially hazardous situation
other than electrical, which if not avoided, could result
in damage to property.
This ACS255 variable speed drive is intended for professional installation and commissioning into complete equipment or systems
as part of a fixed installation. If installed incorrectly it may present a safety hazard. The ACS255 uses high voltages and currents,
carries a high level of stored electrical energy, and is used to control mechanical plant that may cause injury. Close attention is
required to system design and electrical installation to avoid hazards in either normal operation or in the event of equipment
malfunction. Only qualified electricians are allowed to install and maintain this product.
System design, installation, commissioning and maintenance must be carried out only by personnel who have the necessary
training and experience. They must carefully read this safety information and the instructions in this Guide and follow all
information regarding transport, storage, installation and use of the ACS255, including the specified environmental limitations.
Do not perform any flash test or voltage withstand test on the ACS255. Any electrical measurements required should be carried out
with the ACS255 disconnected.
Electric shock hazard! Disconnect and ISOLATE the ACS255 before attempting any work on it. High voltages are present at the
terminals and within the drive for up to 10 minutes after disconnection of the electrical supply. Always ensure by using a suitable
multimeter that no voltage is present on any drive power terminals prior to commencing any work.
Where supply to the drive is through a plug and socket connector, do not disconnect until 10 minutes have elapsed after turning off
the supply.
Ensure correct grounding connections and cable selection as per defined by local legislation or codes. The drive may have a leakage
current of greater than 3.5mA; furthermore the earth cable must be sufficient to carry the maximum supply fault current which
normally will be limited by the fuses. Suitably rated fuses should be fitted in the mains supply to the drive, according to any local
legislation or codes.
Do not carry out any work on the drive control cables when power is applied to the drive or to the external control circuits.
The “Safe Torque Off” Function does not prevent high voltages from being present at the drives power terminals.
Within the European Union, all machinery in which this product is used must comply with the Machinery Directive 2006/42/EC,
Safety of Machinery. In particular, the machine manufacturer is responsible for providing a main switch and ensuring the electrical
equipment complies with EN60204-1.
The level of integrity offered by the ACS255 control input functions – for example stop/start, forward/reverse and maximum speed,
is not sufficient for use in safety-critical applications without independent channels of protection. All applications where
malfunction could cause injury or loss of life must be subject to a risk assessment and further protection provided where needed.
The driven motor can start at power up if the enable input signal is present.
The STOP function does not remove potentially lethal high voltages. ISOLATE the drive and wait 10 minutes before starting any
work on it. Never carry out any work on the Drive, Motor or Motor cable when the input power is still applied.
The ACS255 can be programmed to operate the driven motor at speeds above or below the speed achieved when connecting the
motor directly to the mains supply. Obtain confirmation from the manufacturers of the motor and the driven machine about
suitability for operation over the intended speed range prior to machine start up.
Do not activate the automatic fault reset function on any systems whereby this may cause a potentially dangerous situation.
IP66 drives provide their own pollution degree 2 environments. IP20 drives must be installed in a pollution degree 2 environment,
mounted in a cabinet with IP54 or better.
ACS255s are intended for indoor use only.
When mounting the drive, ensure that sufficient cooling is provided. Do not carry out drilling operations with the drive in place,
dust and metal shavings from drilling may lead to damage.
The entry of conductive or flammable foreign bodies should be prevented. Flammable material should not be placed close to the
drive
Relative humidity must be less than 95% (non-condensing).
Ensure that the supply voltage, frequency and number of phases correspond to the rating of the ACS255 as delivered.
Never connect the mains power supply to the Output terminals U, V, W.
Do not install any type of automatic switchgear between the drive and the motor
Wherever control cabling is close to power cabling, maintain a minimum separation of 4in. (100 mm) and arrange crossings at 90
degrees
Ensure that all terminals are tightened to the appropriate torque setting
Do not attempt to carry out any repair of the ACS255. In the case of suspected fault or malfunction, contact your local ABB Drives
representative for further assistance.
Please read the IMPORTANT SAFETY INFORMATION below, and all Warning and Caution information elsewhere.
Page 12
13
3. General Information and Ratings
This chapter contains information about the ACS255 including how to identify the drive.
3.1. Type designation key
The type designation contains information on the specification and configuration of the drive. You find the type designation label attached to the
drive. The first digits from the left express the basic configuration, for example ACS255-03U-02A1-6. The explanations of the type designation
label selections are described below.
ACS255-03 U-02A1-6+B063+F278
ACS255 product series
1-phase/3 phase
03 = 3-phase input
EMC Filter
E = Filtered
U = Non-Filtered
Output Current Rating
In format xxAy, where xx indicates the integer part and y the fractional part,
For example, 02A1 means 2.1 A.
Input Voltage Range
6 = 500…600VAC
IP66 Enclosure
Input switch assembly
(Speed potentiometer, run/stop and mains disconnect switch)
Page 13
14
Model Number
Power
(HP)
Output Current
(A)
Input switch
assembly
Internal DB transistor
Frame Size
ACS255-03U-02A1-6
1
2.1
No
Yes
P2
ACS255-03U-03A1-6
2
3.1
No
Yes
P2
ACS255-03U-04A1-6
3
4.1
No
Yes
P2
ACS255-03U-06A5-6
5
6.5
No
Yes
P2
ACS255-03U-09A0-6
7.5 9 No
Yes
P2
ACS255-03U-12A0-6
10
12
No
Yes
P3
ACS255-03U-17A0-6
15
17
No
Yes
P3
ACS255-03U-22A0-6
20
22
No
Yes
P3
Model Number
Power
(HP)
Output Current
(A)
Input switch
assembly
Internal DB transistor
Frame Size
ACS255-03U-02A1-6 +B063
1
2.1
No
Yes
P2
ACS255-03U-03A1-6 +B063
2
3.1
No
Yes
P2
ACS255-03U-04A1-6 +B063
3
4.1
No
Yes
P2
ACS255-03U-06A5-6 +B063
5
6.5
No
Yes
P2
ACS255-03U-09A0-6 +B063
7.5 9 No
Yes
P2
ACS255-03U-12A0-6 +B063
10
12
No
Yes
P3
ACS255-03U-17A0-6 +B063
15
17
No
Yes
P3
ACS255-03U-02A1-6 +B063 +F278
1
2.1
Yes
Yes
P2
ACS255-03U-03A1-6 +B063 +F278
2
3.1
Yes
Yes
P2
ACS255-03U-04A1-6 +B063 +F278
3
4.1
Yes
Yes
P2
ACS255-03U-06A5-6 +B063 +F278
5
6.5
Yes
Yes
P2
ACS255-03U-09A0-6 +B063 +F278
7.5
9
Yes
Yes
P2
ACS255-03U-12A0-6 +B063 +F278
10
12
Yes
Yes
P3
ACS255-03U-17A0-6 +B063 +F278
15
17
Yes
Yes
P3
3.2. Drive model numbers – IP20
Mechanical Dimensions and Mounting information is shown from page 15.
Electrical Specifications are shown on page 59.
3.3. Drive model numbers – IP66
Mechanical Dimensions and Mounting information is shown from page 15.
Electrical Specifications are shown on page 59.
Page 14
4. Mechanical Installation
Drive
Size
A B C D E F G H I J Weight
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
Kg
Ib
2
221
8.70
207
8.15
137
5.39
209
8.23
5.3
0.21
185
7.28
112
4.41
63
2.48
5.5
0.22
10
0.39
1.8
4
3
261
10.28
246
9.69 - -
247
9.72 6 0.24
205
8.07
131
5.16
80
3.15
5.5
0.22
10
0.39
3.5
7.7
4.1. General
The ACS255 should be mounted in a vertical position only, on a flat, flame resistant, vibration free mounting using the integral
mounting holes or DIN Rail clip (Size P2 only).
The ACS255 must be installed in a pollution degree 1 or 2 environment only.
Do not mount flammable material close to the ACS255
Ensure that the minimum cooling air gaps, as detailed in section 4.5 and 4.7 are left clear.
Ensure that the ambient temperature range does not exceed the permissible limits for the ACS255 are given on page 60.
Provide suitable clean, moisture and contaminant free cooling air sufficient to fulfil the cooling requirements of the ACS255.
4.2. Before Installation
Carefully Unpack the ACS255 and check for any signs of damage. Notify the shipper immediately if any exist.
Check the drive rating label to ensure it is of the correct type and power requirements for the application.
To prevent accidental damage always store the ACS255 in its original box until required. Storage should be clean and dry and within
the temperature range –40°C to +60°C.
4.3. UL Compliant Installation
Note the following for UL-compliant installation:
For an up to date list of UL compliant products, please refer to UL listing NMMS.E211945.
The drive can be operated within an ambient temperature range as stated in section 11.1.
For IP20 units, installation is required in a pollution degree 1 environment.
For IP66 units, installation in a pollution degree 2 environment is permissible.
UL Listed ring terminals / lugs must be used for all bus bar and grounding connections.
4.4. Mechanical dimensions and weights
4.4.1. IP20 Units
15
Mounting Bolts
All Frame Sizes : 4 x M4
Tightening Torques
Recommended Control Terminal Torque Settings : All Sizes : 0.8 Nm (7 lb-in)
Recommended Power Terminal Torque Settings : All Sizes : 1 Nm (8.85 lb-in)
4.5. Guidelines for Enclosure mounting (IP20 Units)
Drive
Frame
Size
X
Above &
Below
Y
Either
Side
Z
Between
mm
in
mm
in
mm
in
2
75
2.95
50
1.97
46
1.81
3
100
3.94
50
1.97
52
2.05
Note :
Dimension Z assumes that the drives are mounted sideby-side with no clearance.
Typical drive heat losses are 3% of operating load
conditions.
Above are guidelines only and the operating ambient
temperature of the drive MUST be maintained at all
times.
IP20 drives must be installed in a pollution degree 2 environment, mounted in a cabinet with IP54 or better.
Installation should be in a suitable enclosure, according to EN60529 or other relevant local codes or standards.
Enclosures should be made from a thermally conductive material.
Where vented enclosures are used, there should be free space clearance above and below the drive to ensure good air circulation –
see the diagram below for minimum free space clearance. Air should be drawn in below the drive and expelled above the drive.
In any environments where the conditions require it, the enclosure must be designed to protect the ACS255 against ingress of airborne
dust, corrosive gases or liquids, conductive contaminants (such as condensation, carbon dust, and metallic particles) and sprays or
splashing water from all directions.
High moisture, salt or chemical content environments should use a suitably sealed (non-vented) enclosure.
The enclosure design and layout should ensure that the adequate ventilation paths and clearances are left to allow air to circulate through the
drive heatsink. Recommend below is the minimum mounting clearance requirements for drives mounted in non-ventilated metallic enclosures.
17
4.6. Mounting the Drive – IP20 Units
IP20 Units are intended for installation within a control cabinet.
When mounting with screws
o Using the drive as a template, or the dimensions shown above, mark the locations for drilling
o Ensure that when mounting locations are drilled, the dust from drilling does not enter the drive
o Mount the drive to the cabinet backplate using suitable M4 mounting screws
o Position the drive, and tighten the mounting screws securely
When Din Rail Mounting (Frame Size 2 Only)
o Locate the DIN rail mounting slot on the rear of the drive onto the top of the DIN rail first
o Press the bottom of the drive onto the DIN rail until the lower clip attaches to the DIN rail
o If necessary, use a suitable flat blade screw driver to pull the DIN rail clip down to allow the drive to mount securely on the
rail
oTo remove the drive from the DIN rail, use a suitable flat blade screwdriver to pull the release tab downwards, and lift the
bottom of the drive away from the rail first
Page 17
18
Y
X
X
Drive
Frame
Size
X
Above &
Below
Y
Either
Side
mm
in
mm
in
2
200
7.87
10
0.39
3
200
7.87
10
0.39
Note :
Typical drive heat losses are approximately 3% of
operating load conditions.
Above are guidelines only and the operating
ambient temperature of the drive MUST be
maintained at all times.
Cable Gland Sizes
Drive
Frame
Size
Power
Cable
Motor
Cable
Control
Cables
2
M25
(PG21)
M25
(PG21)
M20
(PG13.5)
3
M25
(PG21)
M25
(PG21)
M20
(PG13.5)
Frame Sizes 2 & 3
Using a suitable flat blade screwdriver, rotate the two retaining
screws indicated until the screw slot is vertical.
X
4.7. Guidelines for mounting (IP66 Units)
Before mounting the drive, ensure that the chosen location meets the environmental condition requirements for the drive shown in
section 11.1.
The drive must be mounted vertically, on a suitable flat surface
The minimum mounting clearances as shown in the table below must be observed
The mounting site and chosen mountings should be sufficient to support the weight of the drives
Using the drive as a template, or the dimensions shown above, mark the locations required for drilling
Suitable cable glands to maintain the ingress protection of the drive are required.
Gland holes for power and motor cables are pre-moulded into the drive enclosure, recommended gland sizes are shown above, gland
holes for control cables may be cut as required.
4.8. Removing the Terminal Cover
4.9. Routine Maintenance
The drive should be included within the scheduled maintenance program so that the installation maintains a suitable operating environment,
this should include:
Ambient temperature is at or below that set out in the “Environment” section on page 59.
Heat sink fans freely rotating and dust free.
The Enclosure in which the drive is installed should be free from dust and condensation; furthermore ventilation fans and air filters
should be checked for correct air flow.
Checks should also be made on all electrical connections, ensuring screw terminals are correctly torqued; and that power cables have no signs of
heat damage.
Page 18
5. Electrical Installation
This manual is intended as a guide for proper installation. ABB Drives Ltd cannot assume responsibility for the compliance or the
non-compliance to any code, national, local or otherwise, for the proper installation of this drive or associated equipment. A
hazard of personal injury and/or equipment damage exists if codes are ignored during installation.
This ACS255 contains high voltage capacitors that take time to discharge after removal of the main supply. Before working on the
drive, ensure isolation of the main supply from line inputs. Wait ten (10) minutes for the capacitors to discharge to safe voltage
levels. Failure to observe this precaution could result in severe bodily injury or loss of life.
Only qualified electrical personnel familiar with the construction and operation of this equipment and the hazards involved should
install, adjust, operate, or service this equipment. Read and understand this manual and other applicable manuals in their entirety
before proceeding. Failure to observe this precaution could result in severe bodily injury or loss of life.
Whenever possible use Shielded motor cablesmaintaining shield as far as possible along the cable.
=/>100mm
Twisted-Pair shielded cables for analog control and motor
feedback signals.
Ensure Filter chassis is making metal-metal contact with
Mounting panel.
RFI Filter
Option
Site Ground Bus-Bar bonded to Metal Back-Panel
panel which is bonded to main power ground.
Metal Back-Panel
U V W
PE
U V W
PE
360° bonding
EMC cable gland
(Best-Practice)
(Shield to Motor
Chassis)
X
Avoid long parallel
runs of motor cables
with other cables
Where control cables must cross power
cables make sure they are as near to 90
degrees as possible.
5.1. Grounding the Drive
5.1.1. Recommended installation for EMC compliance.
19
Page 19
20
5.1.2. Grounding Guidelines
The ground terminal of each ACS255 should be individually connected DIRECTLY to the site ground bus bar (through the filter if installed).
The ACS255 ground connections should not loop from one drive to another, or to, or from any other equipment. Ground loop impedance must
confirm to local industrial safety regulations. To meet UL regulations, UL approved ring crimp terminals should be used for all ground wiring
connections.
The drive Safety Ground must be connected to system ground. Ground impedance must conform to the requirements of national and local
industrial safety regulations and/or electrical codes. The integrity of all ground connections should be checked periodically.
5.1.3. Protective Earth Conductor
The Cross sectional area of the PE Conductor must be at least equal to that of the incoming supply conductor.
5.1.4. Safety Ground
This is the safety ground for the drive that is required by code. One of these points must be connected to adjacent building steel (girder, joist), a
floor ground rod, or bus bar. Grounding points must comply with national and local industrial safety regulations and/or electrical codes.
5.1.5. Motor Ground
The motor ground must be connected to one of the ground terminals on the drive.
5.1.6. Ground Fault Monitoring
As with all inverters, a leakage current to earth can exist. The ACS255 is designed to produce the minimum possible leakage current while
complying with worldwide standards. The level of current is affected by motor cable length and type, the effective switching frequency, the
earth connections used and the type of RFI filter installed. If a GFCI (Ground Fault Current Interrupter) is to be used, the following conditions
apply:
The device must be suitable for protecting equipment with a DC component in the leakage current
Individual GFCI’s should be used for each ACS255
5.1.7. Shield Termination (Cable Screen)
The safety ground terminal provides a grounding point for the motor cable shield. The motor cable shield connected to this terminal (drive end)
should also be connected to the motor frame (motor end). Use a shield terminating or EMI clamp to connect the shield to the safety ground
terminal.
5.2. Wiring Precautions
Connect the ACS255 according to section 5.9, ensuring that motor terminal box connections are correct. There are two connections in general:
Star and Delta. It is essential to ensure that the motor is connected in accordance with the voltage at which it will be operated. For more
information, refer to section 5.6 Motor Terminal Box Connections.
Type MC continuous corrugated aluminium armour cable with symmetrical grounds or shielded power cable is recommended for the motor
cables if metallic conduit is not used.
The power cables must be rated for 75 °C (167 °F).
5.3. Incoming Power Connection
Power should be connected to L1, L2, and L3. Phase sequence is not important.
For compliance with CE and C Tick EMC requirements, a symmetrical shielded cable is recommended.
For compliance with CSA requirements, transient surge suppression shall be installed on the line side of this equipment and shall be
rated 600V (phase to ground), 600V (phase to phase), suitable for overvoltage category III, and shall provide protection for a rated
impulse withstand voltage peak of 4 kV or equivalent.
A fixed installation is required according to IEC61800-5-1 with a suitable disconnecting device installed between the ACS255 and the AC
Power Source. The disconnecting device must conform to the local safety code / regulations (e.g. within Europe, EN60204-1, Safety of
machinery).
The cables should be dimensioned according to any local codes or regulations. Guideline dimensions are given in section 11.2.
Suitable fuses to provide wiring protection of the input power cable should be installed in the incoming supply line, according to the
data in section 11.2. The fuses must comply with any local codes or regulations in place. In general, type gG (IEC 60269) or UL type T
fuses are suitable; however in some cases type aR fuses may be required. The operating time of the fuses must be below 0.5 seconds.
When the power supply is removed from the drive, a minimum of 30 seconds should be allowed before re-applying the power. A
minimum of 5 minutes should be allowed before removing the terminal covers or connection.
The maximum permissible short circuit current at the ACS255 Power terminals as defined in IEC60439-1 is 100kA.
An optional Input Choke is recommended to be installed in the supply line for drives where any of the following conditions occur:-
o The incoming supply impedance is low or the fault level / short circuit current is high.
o If the transformer kVA rating is more than 10x the kVA rating of the drive or ensure that the per drive source
impedance is less than 0.5%
o The supply is prone to dips or brown outs
o An imbalance exists on the supply (3 phase drives)
o The power supply to the drive is via a busbar and brush gear system (typically overhead Cranes).
In all other installations, an input choke is recommended to ensure protection of the drive against power supply faults.
Page 20
5.4. Compatibility with IT (ungrounded) and corner-grounded TN systems
WARNING! EMC filters should not be used when installing the drive on an IT system (an ungrounded
power system or high-resistance-grounded power system, otherwise the system will be connected to
ground potential through the EMC capacitors. This may cause danger or damage to the EMC filter.
If you have an IT (ungrounded) system or corner-grounded TN system, disconnect the internal Varistor
screw as shown below.
21
Page 21
22
Additional Information
Compatible Thermistor : PTC Type, 2.5kΩ trip level Use a setting of
parameter 9902 DIGITAL INPUTS FUNCTION SELECT that has Input 5
(terminal 10) function as External Trip, e.g. 9902 = 6.
Refer to section 8.1 for further details.
5.5. Drive and Motor Connection
The drive inherently produces fast switching of the output voltage (PWM) to the motor compared to the mains supply, for motors
which have been wound for operation with a variable speed drive then there is no preventative measures required, however if the
quality of insulation is unknown then the motor manufacturer should be consulted and preventative measures may be required.
The motor should be connected to the ACS255 U, V, and W terminals using a suitable 3 or 4 core cable. Where a 3 core cable is utilised,
with the shield operating as an earth conductor, the shield must have a cross sectional area at least equal to the phase conductors
when they are made from the same material. Where a 4 core cable is utilised, the earth conductor must be of at least equal cross
sectional area and manufactured from the same material as the phase conductors.
The motor earth must be connected to one of the ACS255 earth terminals.
For compliance with the European EMC directive, a suitable screened (shielded) cable should be used. Braided or twisted type
screened cable where the screen covers at least 85% of the cable surface area, designed with low impedance to HF signals are
recommended as a minimum. Installation within a suitable steel or copper tube is generally also acceptable.
The cable screen should be terminated at the motor end using an EMC type gland allowing connection to the motor body through the
largest possible surface area
Where drives are mounted in a steel control panel enclosure, the cable screen may be terminated directly to the control panel using a
suitable EMC clamp or gland, as close to the drive as possible.
For IP66 drives, connect the motor cable screen to the internal ground clamp
5.6. Motor Terminal Box Connections
Most general purpose motors are wound for operation on dual voltage supplies. This is indicated on the nameplate of the motor
This operational voltage is normally selected when installing the motor by selecting either STAR or DELTA connection. STAR always gives the
higher of the two voltage ratings. . Example Motor nameplate shown below (380V Delta illustrated):
5.7. Motor Thermal overload Protection.
5.7.1. Internal Thermal overload protection.
The drive has an in-built motor thermal overload function; this is in the form of an “F0009” trip after delivering >100% of the value set in
parameter 9906 MOTOR RATED CURRENT for a sustained period of time (e.g. 150% for 60 seconds).
5.7.2. Motor Thermistor Connection
Where a motor thermistor is to be used, it should be connected as follows :-
5.8. Control Terminal Wiring
All analog signal cables should be suitably shielded. Twisted pair cables are recommended.
Power and Control Signal cables should be routed separately where possible, and must not be routed parallel to each other.
Signal levels of different voltages e.g. 24 Volt DC and 600 Volt AC, should not be routed in the same cable.
Maximum control terminal tightening torque is 0.5Nm.
Control Cable entry conductor size: 0.05 – 2.5mm2 / 30 – 12 AWG.
Page 22
5.9. Connection Diagram
5.9.1. Power Terminal Designations
Incoming Power Source
Connect to L1, L2 & L3
terminals.
Phase sequence is not
important.
Motor Connections
Connect the motor to the U, V & W
terminals.
The motor earth must be connected
to the drive
Optional Brake Resistor & DC Bus
Connections
Where a Brake resistor is used, it
must be connected to the “BR” and
“+” terminals.
Protective Earth / Ground
connection.
The drive must be Earthed /
Grounded
5.9.2. Control Terminal Connections & Factory Settings
Open
Closed
+24V Supply (100mA) / External Input
+24V 1
Digital Input 1
Stop
Run (Enable)
DI1 2
Digital Input 2
Forward Rotation
Reverse Rotation
DI2 3
Digital Input 3
Analog Speed Ref
Preset Speed
DI3 4
Digital Inputs : 8 – 30 Volt DC
+ 10 Volt, 10mA Output
+10V 5
Analog Input 1
DI/AI4 6
0V 7 0V
Output Speed
Analog Output : 0 – 10 Volt / 4-20mA, 20mA Max
8 AO1
0 Volt Supply / External Input
0V 9 0V
Output Current
Analog Input 2
DI/AI5
10
Analog Output : 0 – 10 Volt / 4-20mA, 20mA Max
11
AO2
SAFE TORQUE OFF Input
Also refer to page 24 for further information on the STO
Function.
Logic High = 18-30 Volt DC (“SAFE TORQUE OFF” Standby
mode)
STO+
12
STO-
13
Relay Contacts (Terminals 14-18)
250VAC / 30VDC
5A Maximum
14
R01COM
Default Function :
Drive Ready
/ Fault
15
R01NO
16
R01NC
17
R02NO
Default Function :
Running
18
R02COM
L1
L3
The brake resistor
should be protected from
overheating by means of a
thermal switch which interrupts
the mains supply in a brake
23
Page 23
24
SIL
(Safety Integrity Level)
PFH
D
(Probability of dangerous Failures per Hour)
SFF
(Safe failure fraction %)
Lifetime assumed
EN 61800-5-2
2
1.23E-09 1/h (0.12 % of SIL 2)
50
20 Yrs
PL
(Performance level)
CCF (%)
(Common Cause Failure)
EN ISO 13849-1
PL d
1
SILCL
EN 62061
SILCL 2
5.10. Safe Torque Off
Safe Torque OFF will be referred to as “STO” through the remainder of this section.
5.10.1. Responsibilities
The overall system designer is responsible for defining the requirements of the overall “Safety Control System” within which the drive will be
incorporated; furthermore the system designer is responsible for ensuring that the complete system is risk assessed and that the “Safety control
System” requirements have been entirely met and that the function is fully verified, this must include confirmation testing of the “STO” function
before drive commissioning.
The system designer shall determine the possible risks and hazards within the system by carrying out a thorough risk and hazard analysis, the
outcome of the analysis should provide an estimate of the possible hazards, furthermore determine the risk levels and identify any needs for risk
reduction. The “STO” function should be evaluated to ensure it can sufficiently meet the risk level required.
5.10.2. What STO Provides
The purpose of the “STO“ function is to provide a method of preventing the drive from creating torque in the motor in the absence of the “STO“
input signals (Terminal 12 with respect to Terminal 13), this allows the drive to be incorporated into a complete safety control system where
“STO“ requirements need to be fulfilled.1
The “STO“ function can typically eliminate the need for electro-mechanical contactors with cross-checking auxiliary contacts as per normally
required to provide safety functions.2
The drive has the “STO“ Function built-in as standard and complies with the definition of “Safe torque off“ as defined by IEC 61800-5-2:2007.
The “STO“ Function also corresponds to an uncontrolled stop in accordance with category 0 (Emergency Off), of IEC 60204-1. This means that
the motor will coast to a stop when the “STO” function is activated, this method of stopping should be confirmed as being acceptable to the
system the motor is driving.
The “STO“ function is recognised as a fail safe method even in the case where the “STO“ signal is absent and a single fault within the drive has
occured, the drive has been proven in respect of this by meeting the following safety standards :
Note : The values acheived above maybe jepardised if the drive is installed outside of the Environmental limits detailed in section 11.1 on page
59.
5.10.3. What STO does not provide
Disconnect and ISOLATE the drive before attempting any work on it. The “STO“ function does not prevent high voltages from being
present at the drive power terminals.
1
Note : The “STO“ function does not prevent the drive from an unexpected re-start. As soon as the “STO“inputs receive the relevant
signal it is possible (subject to parameter settings) to restart automatically, Based on this, the function should not be used for
carrying out short-term non-electrical machinery operations (such as cleaning or maintenance work).
2
Note : In some applications additional measures may be required to fulfil the systems safety function needs : the “STO“ function
does not provide motor braking. In the case where motor braking is required a time delay safety relay and/or a mechanical brake
arrangement or similar method should be adopted, consideration should be made over the required safety function when braking as
the drive braking circuit alone cannot be relied upon as a fail safe method.
Page 24
5.10.4. “STO“ Operation
Fault
Code
Code
Number
Description
Corrective Action
“Sto-F”
29
A fault has been detected within either of the
internal channels of the “STO” circuit.
Refer to local ABB representative
When the “STO” inputs are energised, the “STO” function is in a standby state, if the drive is then given a “Start signal/command” (as per the
start source method selected in parameter 9902 DIGITAL INPUTS FUNCTION SELECT) then the drive will start and operate normally.
When the “STO” inputs are de-energised then the STO Function is activated and stops the drive (Motor will coast), the drive is now in “Safe
Torque Off” mode.
To get the drive out of “Safe Torque Off” mode then any “Fault messages” need to be reset and the drive “STO” input needs to be re-energised.
5.10.5. “STO” Status and Monitoring
There are a number of methods for monitoring the status of the “STO” input, these are detailed below:
Drive Display
In Normal drive operation (Mains AC power applied), when the drives “STO” input is de-energised (“STO” Function activated) the drive will
highlight this by displaying “InHibit”, (Note: If the drive is in a tripped condition then the relevant trip will be displayed and not “InHibit”).
Drive Output Relay
Drive relay 1: Setting parameter 1401 USER RELAY 1 OUTPUT (TERMINALS 14, 15 & 16) FUNCTION SELECT to a value of “13” will result
in relay opening when the “STO” function is activated.
Drive relay 2: Setting parameter 1402 USER RELAY 2 OUTPUT (TERMINALS 17 & 18) FUNCTION SELECT to a value of “13” will result in
relay opening when the “STO” function is activated.
“STO” Fault Codes
25
5.10.6. “STO” Function response time
The total response time is the time from a safety related event occurring to the components (sum of) within the system responding and
becoming safe. (Stop Category 0 in accordance with IEC 60204-1)
The response time from the “STO” inputs being de-energised to the output of the drive being in a state that will not produce torque in
the motor (“STO” active) is less than 1ms.
The response time from the “STO” inputs being de-energised to the “STO” monitoring status changing state is less than 20ms
The response time from the drive sensing a fault in the STO circuit to the drive displaying the fault on the display/Digital output
showing drive not healthy is less than 20ms.
Page 25
26
- Twisted-Pair
- Shielded cables
1213
0V
+24Vdc
Safety relay
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source.
External
Power
Supply
Protected
shielded cables
1213
Protective Capped Trunking
or equivalent to prevent
STO Cable short circuit to an
external Voltage source.
17
Safety
relay
Voltage Rating (Nominal)
24Vdc
STO Logic High
18-30Vdc (Safe torque off in standby)
Current Consumption (Maximum)
100mA
Standard Requirements
SIL2 or PLd SC3 or better (With Forcibly guided Contacts)
Number of Output Contacts
2 independent
Switching Voltage Rating
30Vdc
Switching Current
100mA
Wires should be
protected
against short
circuits as
shown above
1 2 3 4 5 6 7 8 9 10 11 12 13
0V
+24Vdc
External
Power
Supply
Safety relay
1 2 3 4 5 6 7 8 9 10 11 12 13
Safety relay
5.10.7. “STO” Electrical Installation
The “STO” wiring shall be protected from inadvertent short circuits or tampering which could lead to failure of the “STO” input signal,
further guidance is given in the diagrams below.
In addition to the wiring guidelines for the “STO” circuit below, section 5.1.1 “Recommended installation for EMC compliance should also be
followed.
The drive should be wired as illustrated below; the 24Vdc signal source applied to the “STO” input can be either from the 24Vdc on the drive or
from an External 24Vdc power supply.
5.10.7.1. Recommended “STO” wiring
Using an External 24Vdc Power Supply. Using the drives on-board 24Vdc supply
Note : The Maximum cable length from Voltage source to the drive terminals should not exceed 25 metres.
5.10.7.2. External Power supply Specification.
5.10.7.3. Safety Relay Specification.
The safety relay should be chosen so that at minimum it meets the safety standards in which the drive meets.
Page 26
5.10.8. Enabling the “STO” Function
The “STO” function is always enabled in the drive regardless of operating mode or parameter changes made by the user.
5.10.9. Testing the “STO” Function
Before commissioning the system the “STO” function should always be tested for correct operation, this should include the following tests:
With the motor at standstill, and a stop command given to the drive (as per the start source method selected in parameter 9902
DIGITAL INPUTS FUNCTION SELECT):
o De-energise the “STO” inputs (Drive will display ““InHibit”).
o Give a start command (as per the start source method selected in parameter 9902 DIGITAL INPUTS FUNCTION SELECT) and
check that the drive still displays “Inhibit” and that the operation is in line with the section 5.10.4“STO“ Operation and
section 5.10.5 “STO” Status and Monitoring
With the motor running normally (from the drive):
o De-energise the “STO” inputs
o Check that the drive displays “InHibit” and that the motor stops and that the operation is in line with the section 5.10.4
“STO“ Operation and section 5.10.5 “STO” Status and Monitoring
5.10.10. “STO” Function Maintenance.
The “STO” function should be included within the control systems scheduled maintenance program so that the function is regularly tested for
integrity (Minimum once per Year), furthermore the function should be integrity tested following any safety system modifications or
maintenance work.
If drive fault messages are observed refer to section 13.1 for further guidance.
27
Page 27
28
NAVIGATE
Used to display real-time information, to access and exit
parameter edit mode and to store parameter changes (press
for >1 second to toggle between status and parameter mode)
UP
Used to increase speed in real-time mode or to increase
parameter values in parameter edit mode
DOWN
Used to decrease speed in real-time mode or to decrease
parameter values in parameter edit mode
RESET /
STOP
Used to reset a tripped drive.
When in Keypad mode is used to Stop a running drive.
START
When in keypad mode, used to Start a stopped drive or to
reverse the direction of rotation if bi-directional keypad mode
is enabled.
6. Managing the Keypad
The drive is configured and its operation monitored via the keypad and display.
6.1. Keypad Layout and Function
6.2. Changing Parameters
Page 28
6.3. Resetting Parameters to Factory Default Settings
29
Page 29
30
Function
When Display shows...
Press...
Result
Example
Select lowest Parameter
within Group
i.e.
+
The first parameter of the
group is selected
Display shows
Press
Display shows
Set Parameter to
minimum value
Any numerical value
(Whilst editing a
parameter value)
+
The parameter is set to
the minimum value
When editing
Display shows
Press
Display shows
Adjusting individual digits
within a parameter value
Any numerical value
(Whilst editing a
parameter value)
+
Individual parameter
digits can be adjusted
When editing
Display shows
Press
Display shows.
Press
Display shows.
Press
Display shows.
Press
Display shows.
Display
Status
Drive mains power applied, but no Enable or Run signal applied
Motor Autotune in progress.
x.x
Drive running, display shows output frequency (Hz)
Whilst the drive is running, the following displays
can be selected by briefly pressing the
button on the drive. Each press of the button will
cycle the display through to the next selection.
x.x
Drive running, display shows motor current (Amps)
x.x
Drive Running, display shows motor power (kW)
x.x
Drive Running, display shows customer selected units, see parameters
3400 DISPLAY SCALING FACTOR and 3405 DISPLAY SCALING SOURCE
Drive mains power not present, external 24 Volt control power supply present only
Output power hardware inhibited, hardware enable circuit open. External links are required to the STO inputs (terminals 12
and 13) as shown on page 23.
Parameters reset to factory default settings
For drive fault code displays, refer to section 13.1 on page 62
6.4. Advanced Keypad Operation ShortCuts
6.5. Drive Operating Displays
Page 30
7. Quick Start-up and Control
7.1. Quick Start-up Terminal Control
When delivered, the ACS255 is in the factory default state, meaning that it is set to operate in terminal control mode and all parameters have
the default values as indicated in section 9.
Perform mechanical and electrical installations per section 4 and 5.
Connect the motor to the drive, ensuring the correct star/delta connection for the voltage rating - see section 5.6 on page 22.
Apply the mains power to the drive, then enter the motor data from motor nameplate; 9905 = motor rated voltage, 9906 = motor
rated current, 9907 = motor rated frequency, & 9908 = motor rated speed.
Connect the Drive Hardware Enable (STO) circuit as follows (see section 5.10.7 “STO” Electrical Installation for further details)
o Link Terminal 1 to Terminals 12 (STO +)
o Link Terminal 9 to Terminal 13 (STO -)
Note : If the “STO“ function is being utilised as part of an overall safety system then the circuit should be installed and integrity tested as per the guidance given in section 5.10 “Safe Torque Off”.
Connect a control switch between the control terminals 1 and 2 ensuring that the contact is open (drive disabled).
Connect a potentiometer (1kΩ min to 10kΩ max) between terminals 5 and 7, and the wiper to terminal 6.
With the potentiometer set to zero, switch on the supply to the drive. The display will show .
Close the control switch, terminals 1-2. The drive is now ‘enabled’ and the output frequency/speed are controlled by the
potentiometer. The display shows zero speed in Hz (.) with the potentiometer turned to minimum.
Turn the potentiometer to maximum. The motor will accelerate to 60Hz, the default value of parameter 2008, under the control of the
acceleration ramp time parameter 2202.
If the potentiometer is turned to minimum, the motor will decelerate to 0Hz, the default minimum speed set in parameter 2007, under
the control of the deceleration ramp parameter 2203. The output speed can be adjusted anywhere between minimum and maximum
speed using the potentiometer.
31
To display motor current (Amps), briefly press the (Navigate) key.
Press again to display the motor power.
Press again to display the estimated motor speed (RPM). (Motor nameplate RPM must be entered in 9908 = motor rated speed)
Press again to return to speed (Hz) display.
To stop the motor, disable the drive by opening the control switch (terminals 1-2).
If the enable/disable switch is opened the drive will decelerate to stop at which time the display will show . If the potentiometer
is turned to zero with the enable/disable closed the display will show .(0.0Hz), if left like this for 20 seconds the drive will go
into standby mode, display shows , waiting for a speed reference signal.
7.2. Quick Start-up Keypad Control
To allow the ACS255 to be controlled from the keypad in a forward direction only, set parameter 1103 PRIMARY COMMAND SOURCE MODE to 1:
Connect the drive to the supply, ensuring the correct voltage and fusing protection – see section 11.2 on page 59.
Connect the motor to the drive, ensuring the correct star/delta connection for the voltage rating - see section 5.6 on page 22.
Apply the mains power to the drive, then enter the motor data from motor nameplate; 9905 = motor rated voltage, 9906 = motor
rated current, 9907 = motor rated frequency.
Connect the Drive Hardware Enable (STO) circuit as follows (see section 5.10.7 “STO“Electrical Installation for further details)
o Link Terminal 1 to Terminals 12 (STO +)
o Link Terminal 9 to Terminal 13 (STO -)
Note : If the “STO“ function is being utilised as part of an overall safety system then the circuit should be
installed and integrity tested as per the guidance given in section 5.10 “Safe Torque Off”.
Connect a control switch between the control terminals 1 and 2 ensuring that the contact is open (drive disabled).
Enable the drive by closing the switch between control terminals 1 & 2. The display will show .
Press the key. The display shows ..
Press to increase speed.
The drive will run forward, increasing speed until is released.
Press to decrease speed. The drive will decrease speed until is released. The rate of deceleration is limited by the
setting in parameter 2203.
Press the key. The drive will decelerate to rest at the rate set in parameter 2203.
The display will finally show at which point the drive is disabled
Page 31
32
The Autotune will begin immediately when parameter 9910 MOTOR PARAMETER AUTO-TUNE ENABLE = 1 is set regardless of
the status of the drive enable signal. Whilst the autotune procedure does not drive or spin the motor, the motor shaft may still
turn slightly. It is not normally necessary to uncouple the load from the motor; however the user should ensure that no risk
arises from the possible movement of the motor shaft.
It is essential that the correct motor data is entered into the relevant drive parameters. Incorrect parameter settings can result
in poor or even dangerous performance.
To preset a target speed prior to enable, press the key whilst the drive is stopped. The display will show the target speed,
use the & keys to adjust as required then press the key to return the display to .
Pressing the key will start the drive accelerating to the target speed.
To allow the ACS255 to be controlled from the keypad in a forward and reverse direction, set parameter 1103 =2:
Operation is the same as when parameter 1103=1 for start, stop and changing speed.
Press the key. The display changes to ..
Press to increase speed
The drive will run forward, increasing speed until is released. Acceleration is limited by the setting in parameter 2202. The
maximum speed is the speed set in parameter 2008.
To reverse the direction of rotation of the motor, press the key again.
7.3. Sensorless Vector Speed Control Mode
ACS255 can be programmed by the user to operate in Sensorless Vector mode, which provides enhanced low speed torque, optimum motor
speed regulation regardless of load and accurate control of the motor torque. In most applications, the default Voltage Vector control mode will
provide adequate performance, however if Sensorless Vector operation is required, use the following procedure.
Enter the motor nameplate details into the relevant parameters as follows
o 9905 MOTOR RATED VOLTAGE
o 9906 MOTOR RATED CURRENT
o 9907 MOTOR RATED FREQUENCY
o (Optional) 9908 MOTOR RATED SPEED (Rpm)
o 9915 Motor Power Factor Cos Ø
Select Sensorless Vector control mode by setting parameter 9903 MOTOR CONTROL MODE = 0
Ensure that the motor is correctly connected to the drive
Carry out a motor data Autotune by setting parameter 9910 MOTOR PARAMETER AUTO-TUNE ENABLE = 1
Page 32
8. Application Macros
1103 (control Mode)
Selected Speed Reference
0 : Terminal Mode
Analog input 1
1 : Keypad Mode (uni-directional)
Digital Potentiometer
2 : Keypad Mode (bi-directional)
Digital Potentiometer
3 : User PI mode
PI controller output
4 : Fieldbus Control
Speed reference via Fieldbus
5 : CANopen
Speed reference via CANopen
11
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
O: Selected Speed Ref
C: Preset speed 1, 2
Analog 1 Speed reference
O: Preset speed 1
C: Preset speed 2
12
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
Digital input 3
Analog input 1
Analog input 2
Preset Speed
Off
Off
Off
Preset Speed 1
On
Off
Off
Preset Speed 2
Off
On
Off
Preset Speed 3
On
On
Off
Preset Speed 4
13
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
O: Selected Speed Ref
C: Preset speed 1
Analog 1 Speed reference
Analog torque reference
14
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
O: Selected Speed Ref
C: Preset speed 1
Analog 1 Speed reference
O: Decel ramp 1 (Par 2203)
C: Decel ramp 2 (Par 2206)1)
15
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
O: Selected Speed Ref
C: Analog input 2
Analog 1 Speed reference
Analog 2 Speed reference
16
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
O: Selected Speed Ref
C: Preset speed 1
Analog 1 Speed reference
External trip2)
O: trip C: Run
17
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
Digital input 3
Analog input 1
Preset Speed
External trip2)
O: trip C: Run
Off
Off
Preset Speed 1
On
Off
Preset Speed 2
Off
On
Preset Speed 3
On
On
Preset Speed 4
18
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
Digital input 3
Analog input 1
Preset Speed
O: Decel ramp 1 (Par 2203)
C: Decel ramp 2 (Par 2206)1)
Off
Off
Preset Speed 1
On
Off
Preset Speed 2
Off
On
Preset Speed 3
On
On
Preset Speed 4
9902
Digital Input 1
(Terminal 2)
Digital Input 2
(Terminal 3)
Digital Input 3
(Terminal 4)
Analog Input 1
(Terminal 6)
Analog Input 2
(Terminal 10)
1
O: Stop
C: Run
O: Forward
C: Reverse
O: Selected Speed Ref
C: Preset speed 1, 2
Analog 1 Speed reference
O: Preset speed 1
C: Preset speed 2
2
O: Stop
C: Run
O: Forward
C: Reverse
Digital input 3
Analog input 1
Analog input 2
Preset Speed
Off
Off
Off
Preset Speed 1
On
Off
Off
Preset Speed 2
Off
On
Off
Preset Speed 3
On
On
Off
Preset Speed 4
3
O: Stop
C: Run
O: Forward
C: Reverse
O: Selected Speed Ref
C: Preset speed 1
Analog 1 Speed reference
Analog torque reference
4
O: Stop
C: Run
O: Forward
C: Reverse
O: Selected Speed Ref
C: Preset speed 1
Analog 1 Speed reference
O: Decel ramp 1 (Par 2203)
C: Decel ramp 2 (Par 2206)1)
5
O: Stop
C: Run
O: Forward
C: Reverse
O: Selected Speed Ref
C: Analog input 2
Analog 1 Speed reference
Analog 2 Speed reference
6
O: Stop
C: Run
O: Forward
C: Reverse
O: Selected Speed Ref
C: Preset speed 1
Analog 1 Speed reference
External trip2)
O: trip C: Run
7
O: Stop
C: Run
O: Forward
C: Reverse
Digital input 3
Analog input 1
Preset Speed
External trip2)
O: trip C: Run
Off
Off
Preset Speed 1
On
Off
Preset Speed 2
Off
On
Preset Speed 3
On
On
Preset Speed 4
8
O: Stop
C: Run
O: Forward
C: Reverse
Digital input 3
Analog input 1
Preset Speed
O: Decel ramp 1 (Par 2203)
C: Decel ramp 2 (Par 2206)1)
Off
Off
Preset Speed 1
On
Off
Preset Speed 2
Off
On
Preset Speed 3
On
On
Preset Speed 4
9
O: Stop
C: Run
O: Forward
C: Reverse
Digital input 3
Analog input 1
Preset Speed
O: Selected Speed Ref
C: Preset speed 1 .. 4
Off
Off
Preset Speed 1
On
Off
Preset Speed 2
Off
On
Preset Speed 3
On
On
Preset Speed 4
10
O: Stop
C: Run
O: Forward
C: Reverse
Normally Open (N.O.)
Close to increase speed
Normally Open (N.O.)
Close to reduce speed
O: Selected Speed Ref
C: Preset speed 1
8.1. Overview of macros
Application macros are pre-programmed parameter sets. While starting up the drive, the user selects the macro best suited for the
purpose with parameter 9902 DIGITAL INPUTS FUNCTION SELECT and 1103 PRIMARY COMMAND SOURCE MODE.
The term “Selected Speed Reference” in the table below is determined by the value set in 1103 PRIMARY COMMAND SOURCE MODE.
33
Page 33
34
19
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
Digital input 3
Analog input 1
Preset Speed
O: Selected Speed Ref
C: Preset speed 1 .. 4
Off
Off
Preset Speed 1
On
Off
Preset Speed 2
Off
On
Preset Speed 3
On
On
Preset Speed 4
20
O: Stop
C: Run Fwd
O: Stop
C: Run Rev
Normally Open (N.O.)
Close to increase speed
Normally Open (N.O.)
Close to reduce speed
O: Selected Speed Ref
C: Preset speed 1
21
Normally Open (N.O.)
Close to run Fwd
Normally Closed
(N.C.)
Open to Stop
Normally Open (N.O.)
Close to run Rev
Analog 1 Speed reference
O: Selected Speed Ref
C: Preset speed 1
9902 = 1
(Default Macro)
Open
Closed
9902 = 2
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run 2
Stop
Run
3
Forward Rotation
Reverse Rotation
3 Forward Rotation
Reverse Rotation
4
Selected Speed ref
Preset Speed ref
4
T4 T6
T10
Preset
5
+10 Volt
5 6
Analog Input 1
6
Open
Open
Open
1202
7
0 Volts
7
Closed
Open
Open
1203
8
8
Open
Closed
Open
1204
9
0 Volts
9
Closed
Closed
Open
1205
10
Preset Speed 1(1202)
Preset Speed 2(1203)
10
11
11
12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
9902 = 3
Open
Closed
9902 = 4
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run 2
Stop
Run
3
Forward Rotation
Reverse Rotation
3 Forward Rotation
Reverse Rotation
4
Selected Speed ref
Preset Speed 1 (1202)
4 Selected Speed ref
Preset Speed 1 (1202)
5
+10 Volt
5 +10 Volt
6
Analog Input 1
6 Analog Input 1
7
0 Volts
7 0 Volts
8 8 9 0 Volts
9
10
Analog input 2 (E.g. Torque Reference)
10Decel ramp 1 (2203)
Decel ramp 2 (2206)
1)
11
11 12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
9902
Digital Input 1
(Terminal 2)
Digital Input 2
(Terminal 3)
Digital Input 3
(Terminal 4)
Analog Input 1
(Terminal 6)
Analog Input 2
(Terminal 10)
Note
1) The drive will immediately ramp at the rate set in parameter 2206 2nd DECELERATION RAMP TIME.
2) If a motor thermistor (PTC type only, or normally closed thermal switch contact) is to be connected, this must be selected in
parameter 1304. Connect the thermistor between terminal 1 and terminal 10.
8.2. Macro wiring configurations.
Note
1) The drive will immediately ramp at the rate set in parameter 2206 2nd DECELERATION RAMP TIME.
Page 34
35
9902 = 5
Open
Closed
9902 = 6
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run 2
Stop
Run
3
Forward Rotation
Reverse Rotation
3 Forward Rotation
Reverse Rotation
4
Selected Speed ref
Analog input 2 speed ref
4 Selected Speed ref
Preset Speed 1 (1202)
5
+10 Volt
5 +10 Volt
6
Analog Input 1
6 Analog Input 1
7
0 Volts
7 0 Volts
8 8 9 0 Volts
9 0 Volts
10
Analog input 2
10External Trip (“F0014”)
11
11 12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
9902 = 7
Open
Closed
9902 = 8
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run 2
Stop
Run
3
Forward Rotation
Reverse Rotation
3 Forward Rotation
Reverse Rotation
4
T4 T6
Preset
Open
Open
1202
Closed
Open
1203
Open
Closed
1204
Closed
Closed
1205
4
T4 T6
Preset
Open
Open
1202
Closed
Open
1203
Open
Closed
1204
Closed
Closed
1205
5 5 6 6 7 7 8 8 9
0 Volts
9 0 Volts
10
External Trip (“F0014”)
10Decel ramp 1 (2203)
Decel ramp 2 (2206)
11
11
12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
9902 = 9
Open
Closed
9902 = 10
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run 2
Stop
Run
3
Forward Rotation
Reverse Rotation
3 Forward Rotation
Reverse Rotation
4
T4 T6
Preset
Open
Open
1202
Closed
Open
1203
Open
Closed
1204
Closed
Closed
1205
4
Increase Speed1)
5 5
6 6 Decrease Speed1)
7 7
8 8 9 0 Volts
9 0 Volts
10
Selected Speed ref
Preset Speeds
10Selected Speed ref
Preset Speed 1 (1202)
11
11 12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
1) Increase/Decrease speed function only works if
parameter 1103 = 1 or 2.
Page 35
36
9902 = 1 1
Open
Closed
9902 = 12
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run Forward
2 Stop
Run Forward
3
Stop
Run Reverse
3 Stop
Run Reverse
4
Selected Speed ref
Preset Speed ref
4
T4 T6
T10
Preset
5
+10 Volt
5 6
Analog Input 1
6
Open
Open
Open
1202
7
0 Volts
7
Closed
Open
Open
1203
8
8
Open
Closed
Open
1204
9
0 Volts
9
Closed
Closed
Open
1205
10
Preset Speed 1(1202)
Preset Speed 2(1203)
10
11
11
12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
9902 = 13
Open
Closed
9902 = 14
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run Forward
2 Stop
Run Forward
3
Stop
Run Reverse
3 Stop
Run Reverse
4
Selected Speed ref
Preset Speed 1 (1202)
4 Selected Speed ref
Preset Speed 1 (1202)
5
+10 Volt
5 +10 Volt
6
Analog Input 1
6 Analog Input 1
7
0 Volts
7 0 Volts
8 8
9
0 Volts
9
10
Analog input 2 (E.g. Torque Reference)
10Decel ramp 1 (2203)
Decel ramp 2 (2206)
11
11
12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
9902 = 15
Open
Closed
9902 = 16
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run Forward
2 Stop
Run Forward
3
Stop
Run Reverse
3 Stop
Run Reverse
4
Selected Speed ref
Analog input 2 speed ref
4 Selected Speed ref
Preset Speed 1 (1202)
5
+10 Volt
5 +10 Volt
6
Analog Input 1
6 Analog Input 1
7
0 Volts
7 0 Volts
8 8
9
0 Volts
9 0 Volts
10
Analog input 2
10External Trip (“F0014”)
11
11
12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
Page 36
37
9902 = 17
Open
Closed
9902 = 18
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run Forward
2 Stop
Run Forward
3
Stop
Run Reverse
3 Stop
Run Reverse
4
T4 T6
Preset
Open
Open
1202
Closed
Open
1203
Open
Closed
1204
Closed
Closed
1205
4
T4 T6
Preset
Open
Open
1202
Closed
Open
1203
Open
Closed
1204
Closed
Closed
1205
5 5
6 6
7 7 8
8
9
0 Volts
9 0 Volts
10
External Trip (“F0014”)
10Decel ramp 1 (2203)
Decel ramp 2 (2206)
11
11
12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
9902 = 19
Open
Closed
9902 = 20
Open
Closed
1
+24 Volt Common
1 +24 Volt Common
2
Stop
Run Forward
2 Stop
Run Forward
3
Stop
Run Reverse
3 Stop
Run Reverse
4
T4 T6
Preset
Open
Open
1202
Closed
Open
1203
Open
Closed
1204
Closed
Closed
1205
4
Increase Speed1)
5 5
6 6 Decrease Speed1)
7 7 8 8
9
0 Volts
9 0 Volts
10
Selected Speed ref
Preset Speeds
10Selected Speed ref
Preset Speed 1 (1202)
11
11
12
Safe Inhibit
Normal Operation
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
2) Increase/Decrease speed function only works if
parameter 1103 = 1 or 2.
9902 = 21
Open
Closed
1
+24 Volt Common
2
N.O. Contact-Start Forward
3
N.C. Closed Contact - Stop
4
N.O. Contact-Start Reverse
5
+10 Volt
+10 Volt
6 Analog Input 1
Analog Input 1
7 0 Volts
0 Volts
8 9 0 Volts
10
Selected Speed ref
Preset Speed 1 (1202)
11
12
Safe Inhibit
Normal Operation
13
Safe Inhibit
Normal Operation
Page 37
38
“Status Mode”
H StoPH
Press for >1sec to enter
“Short/Long Parameter group
selection mode”
Timeout (300s)
Use to select Short “ ” or
Long “ ” group parameters
PAr SH
Press to exit “Short/Long Parameter group
selection mode” and save selection
“Parameter mode”
(End number flashing)
P9902H
PAr SH
PAr LH
PAr SH
Parameter No.
9902
9905
9906
9907
0401
1103
1202
1203
1204
1301
2008
2102
2202
ABBShort parametergroup
(1611not set to"101")
PAr LH
Parameter No.
0000
0401
1100
1103
1202
1203
1204
1205
3400
4001
4002
4005
4010
4011
4016
5302
9902
9905
9906
9907
9908
Longparametergroup(1611=
"101")>>(Currentlyselected
viakeyapd"PARL" on
ACS150)
9. Parameters
9.1. Parameter Structure
The parameters within the drive are split into 2 groups, group 1 is titled “Short Parameter mode” displayed as “Par S” on the drive display
and group 2 is titled “Long Parameter mode” displayed as “Par L” on the drive display.
“Par S” group brings together the most commonly used parameters to aid quick setup.
“Par L” group includes all of the drive parameters.
9.1.1. Group Navigation.
9.1.2. Parameter Structure table.
Page 38
9.2. Parameters in the Short parameter mode
Parameters in the Short parameter mode
No.
Name/Value
Description
Def
99 START-UP DATA
Application macros. Definition of motor set-up data.
As shown in section 8.1 Parameter 9902 has a number of pre-programmed parameter sets
(and terminal functions) which the user selects to best suit the application requirements.
9902 DIGITAL INPUTS
FUNCTION SELECT
Defines the function of the digital inputs depending on the control mode setting in
Parameter 1103 PRIMARY COMMAND SOURCE MODE. (See section 8.1 for further detail)
1
9905
MOTOR RATED VOLTAGE
This parameter should be set to the rated (nameplate) voltage of the motor (Volts).
Drive Rating
Dependent
0…660V
Voltage
Note : The stress on the motor insulation is always dependant on the drive supply voltage.
This also applies in the case where the motor voltage rating is lower than the rating of the
drive and the supply of the drive.
9906
MOTOR RATED CURRENT
This parameter should be set to the rated (nameplate) current of the motor.
Drive Rating
Dependent
0.2* drive rated output
current…1.0* drive rated
output current
Current
9907
MOTOR RATED
FREQUENCY
This parameter should be set to the rated (nameplate) frequency of the motor
60Hz
25…500Hz
Frequency
04 FAULT HISTORY
Fault history (read only)
0401
Trip History Log
Displays the last four fault codes for the drive. Refer to section 13.1 for further information
-
11
REFERENCE SELECT
The drive can accept a variety of references in addition to the conventional analog input,
potentiometer and keypad signals.
1103
PRIMARY COMMAND
SOURCE MODE
0: Terminal
Control
0: TERMINAL CONTROL
The drive responds directly to signals applied to the control terminals.
1: UNI-DIRECTIONAL
KEYPAD CONTROL
The drive can be controlled in the forward direction only using an external or remote Keypad.
2: BI-DIRECTIONAL
KEYPAD CONTROL.
The drive can be controlled in the forward and reverse directions using an external or remote
Keypad. Pressing the keypad START button toggles between forward and reverse.
3: PI CONTROL
The output frequency is controlled by the internal PI controller.
4: FIELDBUS CONTROL
Control via Modbus RTU.
5 : CAN BUS CONTROL.
Control via CAN bus connected to the RJ45 serial interface connector
12 CONSTANT SPEEDS
Constant speeds. Constant speed activation overrides the external speed reference. Constant
speed selections are ignored if the drive is in the local control mode.
Refer to section 8.1 for how to make constant speed selections from the drive control
terminals.
Preset Speeds / Frequencies selected by digital inputs depending on the setting of Parameter
9902.
If Parameter 9908 = 0, the values are entered as Hz. If Parameter 9908 > 0, the values are
entered as Rpm.
Setting a negative value will reverse the direction of motor rotation.
1202
Preset / Jog Frequency /
Speed 1
Defines constant speed 1 (that is the drive output frequency)
5.0Hz/RPM
2007…-2008
Output Frequency
1203
Preset / Jog Frequency /
Speed 2
Defines constant speed 2 (that is the drive output frequency)
10.0Hz/RPM
2007…-2008
Output Frequency
1204
Preset / Jog Frequency /
Speed 3
Defines constant speed 3 (that is the drive output frequency)
25.0Hz/RPM
2007…-2008
Output Frequency
The following table describes the parameters that are visible in the Short parameter mode. See section 9.1 on page 38 for how to
select the parameter mode. All parameters are presented in detail in section Parameters in the Long parameter mode.
39
Page 39
40
Parameters in the Short parameter mode
No.
Name/Value
Description
Def
13 ANALOG INPUTS
Anolog input signal offset
1301
ANALOG INPUT 1 OFFSET
Sets an offset, as a percentage of the full scale range of the input, which is applied to the
analog input signal
0.0%
-500…500 %
Value in percent of the full scale range of the input
Example: If the analog input signal format is 0-10V, offset = 20% .
An analog input signal level of 7 Volts gives the following result :Analog input level (%) = 7/10 = 70%
Result = 70-20 (%) = 50%
20 LIMITS
Maximum frequency
2008
MAXIMUM FREQUENCY /
SPEED LIMIT
Maximum output frequency or motor speed limit – Hz or rpm.
If parameter 9908 MOTOR RATED SPEED >0, the value entered / displayed is in Rpm
60.0 Hz
2007…500.0 Hz
Maximum frequency
21 START/STOP
Stop mode of the motor
2102
STOP MODE
Selects the motor stop function
0 = Ramp to
stop
0 : Ramp To Stop
When the enable signal is removed, the drive will ramp to stop, with the rate controlled by
parameter 2203 DECEL RAMP TIME as described above. In this mode, the drive brake
transistor is disabled
1 : Coast to Stop
When the enable signal is removed, the drive output is immediately disabled, and the motor
will coast (freewheel) to stop. If the load can continue to rotate due to inertia, and the drive
may possibly be re-enabled whilst the motor is still rotating, the spin start function
(Parameter 2101 SPIN START ENABLE) should be enabled. In this mode, the drive brake
transistor is disabled.
2 : Ramp To Stop
When the enable signal is removed, the drive will ramp to stop, with the rate controlled by
Parameter 2203 DECEL RAMP TIME as described above. The ACS255 Brake chopper is also
enabled in this mode.
3 : Coast to Stop
When the enable signal is removed, the drive output is immediately disabled, and the motor
will coast (freewheel) to stop. If the load can continue to rotate due to inertia, and the drive
may possibly be re-enabled whilst the motor is still rotating, the spin start function
(Parameter 2101 SPIN START ENABLE) should be enabled. The drive brake chopper is enabled
in this mode, however it will only activate when required during a change in the drive
frequency setpoint, and will not activate when stopping.
22 ACCEL/DECEL
Acceleration and deceleration times
2202
ACCELERATION RAMP
TIME
Acceleration ramp time from 0 to base speed (Parameter 9907 MOTOR RATED FREQUENCY)
in seconds.
5.0 s
0.00…600.0 s
Time
2203
DECELERATION RAMP
TIME
Deceleration ramp time from base speed (Parameter 9907 MOTOR RATED FREQUENCY) to
standstill in seconds. When set to zero, fastest possible ramp time without trip is activated.
5.0 s
0.00…600.0 s
Time
Page 40
9.3. Read Only Status parameters
Actual signals
No.
Name/Value
Description
01 OPERATING DATA
Basic signals for monitoring the drive (read-only).
For selection of an actual signal to be displayed on the control panel, see parameter 3405 DISPLAY
SCALING SOURCE.
0102
ROTOR SPEED (ESTIMATED)
In Vector control mode, this parameter displays the estimated rotor speed of the motor.
0105
OUTPUT TORQUE
Displays the instantaneous output torque level produced by the motor in %.
0107
DC BUS VOLTAGE
Displays the instantaneous DC Bus Voltage internally within the drive in V DC.
0109
APPLIED MOTOR VOLTAGE
Displays the instantaneous output voltage from the drive to the motor V AC.
0110
DRIVE TEMPERATURE
Displays the Instantaneous Heatsink Temperature measured by the drive in ˚C.
0111
PRE RAMP SPEED CONTROLLER
REFERENCE
Displays the set point reference input applied to the drive internal speed controller in Hz.
0112
TORQUE CONTROLLER
REFERENCE
Displays the set point reference input applied to the drive internal torque controller in %.
0113
DIGITAL SPEED REFERENCE
(MOTORISED POT)
Displays the value of the drive internal Motorised Pot (used for keypad) speed reference in Hz.
0115
ENERGY CONSUMPTION kWh
METER
Displays the amount of energy consumed by the drive in kWh. When the value reaches 1000, it is reset
back to 0.0, and the value of Parameter 0141 (*MWh meter) is increased.
0120
ANALOG INPUT 1 APPLIED
SIGNAL LEVEL
Displays the signal level applied to analog input 1 (Terminal 6) in % after scaling and offsets have been
applied.
0121
ANALOG INPUT 2 APPLIED
SIGNAL LEVEL
Displays the signal level applied to analog input 2 (Terminal 10) in % after scaling and offsets have been
applied.
0126
PI CONTROLLER OUTPUT
Displays the output level of the PI controller in %.
0128
PI REFERENCE (SETPOINT)
Displays the setpoint input to the PI controller in %.
0130
PI FEEDBACK LEVEL
Displays the Feedback input signal to the PI controller in %.
0135
FIELDBUS COMMUNICATION
SPEED REFERENCE
Displays the setpoint being received by the drive from the currently active Fieldbus interface in Hz.
0140
DRIVE LIFETIME OPERATING
TIME
Displays the total operating time of the drive. The first value shown is the number of hours. Pressing
the Up key will display the minutes and seconds. (HH:MM:SS)
0141
ENERGY CONSUMPTION MWh
METER
Displays the amount of energy consumed by the drive in MWh.
0160
DIGITAL INPUT STATUS
Displays the status of the drive inputs, starting with the left hand side digit = Digital Input 1 etc.
0181
MOTOR MAGNETISING
CURRENT (Id)
Displays the motor magnetising Current in AMPS providing an auto tune has been successfully
completed.
0182
MOTOR ROTOR CURRENT (Iq)
Displays the motor Rotor (torque producing) current in Amps, providing an auto tune has been
successfully completed.
0183
DC BUS VOLTAGE RIPPLE LEVEL
Displays the level of ripple present on the DC Bus Voltage in V DC. This parameter is used by the
ACS255 for various internal protection and monitoring functions.
0184
MOTOR STATOR RESISTANCE
(Rs)
Displays the measured motor stator resistance in ohms, providing an auto tune has been successfully
completed.
0185
MOTOR STATOR INDUCTANCE
(Ls)
Displays the measured motor stator inductance in H, providing an auto tune has been successfully
completed.
0186
MOTOR ROTOR RESISTANCE
(Rr)
Displays the measured motor rotor resistance in ohms, providing an auto tune has been successfully
completed.
0188
OPERATING TIME
ACCUMULATED WITH
HEATSINK TEMPERATURE
ABOVE 80°C
Displays the amount of time in hours and minutes that the ACS255 has operated for during its lifetime
with a heatsink temperature in excess of 80°C. This parameter is used by the ACS255 for various
internal protection and monitoring functions. (HH:MM:SS)
9.3.1. Read Only Status parameter access and navigation.
The user must be in the Long Parameter group to gain access to the Read only status parameters. See section 9.1.1 for how to navigate to the
long parameter group.
In the Long Parameter Group when the user scrolls to parameter “0000”, pressing will display “0104”, the User can then scroll to the
required Read only status parameter (as listed in the table above). Pressing once more will then display the value of that particular Read
only status parameter.
For those parameters which have multiple values (e.g. software ID parameter 3301), pressing the and keys will display the different
values within that parameter.
Pressing returns to the next level up. If is then pressed again (without pressing or ), the display changes to the next level up
(main parameter level, i.e. Parameter “0000”).
The following table includes the descriptions of all Read Only status parameters.
41
Page 41
42
Actual signals
No.
Name/Value
Description
Def
0189
OPERATING TIME
ACCUMULATED WITH AMBIENT
TEMPERATURE ABOVE 80°C
Displays the amount of time in hours and minutes that the ACS255 has operated for during its lifetime
with an ambient temperature in excess of 80°C. This parameter is used by the ACS255 for various
internal protection and monitoring functions. (HH:MM:SS)
0190
DRIVE INTERNAL COOLING FAN
TOTAL OPERATING TIME
Displays the total operating time of the ACS255 internal cooling fans. The first value shown is the
number of hours. Pressing the Up key will display the minutes and seconds. This is used for scheduled
maintenance information (HH:MM:SS)
0191
DC BUS VOLTAGE LOG (256ms)
(V DC)
These parameters are used to store the history of various measured levels within the drive at various
regular time intervals prior to a trip. The values are frozen when a fault occurs and can be used for
0192
DC BUS VOLTAGE RIPPLE LOG
(20ms) (V DC)
0193
HEATSINK TEMPERATURE LOG
(30s) (°C)
0194
AMBIENT TEMPERATURE LOG
(30s) (°C)
0195
MOTOR CURRENT LOG (256ms)
(A)
04 FAULT HISTORY
Fault history (read-only)
0402
DRIVE RUN TIME SINCE LAST
TRIP (1)
Displays the total operating time of the drive since the last fault occurred. The first value shown is the
number of hours. Pressing the Up key will display the minutes and seconds. (HH:MM:SS)
0415 DRIVE RUN TIME SINCE LAST
TRIP (2)
Displays the total operating time of the drive since the last fault occurred. The first value shown is the
number of hours. Pressing the Up key will display the minutes and seconds. (HH:MM:SS)
0416
DRIVE RUN TIME SINCE LAST
DISABLE
Displays the total operating time of the drive since the last Run command was received. The first value
shown is the number of hours. Pressing the Up key will display the minutes and seconds. (HH:MM:SS)
0417
INTERNAL EFFECTIVE
SWITCHING FREQUENCY
Displays the actual output switching frequency which the drive is currently operating at.
0423
INTERNAL I/O COMMS ERROR
COUNT
0…65535
0424
INTERNAL DSP COMMS ERROR
COUNT
0…65535
0425
MODBUS COMMS ERROR
COUNT
0…65535
0426
CANBUS COMMS ERROR
COUNT
0…65535
33 INFORMATION
Firmware package version, serial number etc..
3301
SOFTWARE VERSION AND
CHECKSUM
Displays the software version of the drive.
3303
DRIVE SERIAL NUMBER
Displays the unique serial number of the drive.
3304
DRIVE TYPE
Displays the type details of the drive.
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43
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
0000 Read only parameters access
Press the button when in this parameter to access the read only parameters as listed in
section 9.3 on page 41.
-
04
FAULT HISTORY
Fault history (read-only)
0401
TRIP HISTORY LOG
Displays the last four fault codes for the drive. Refer to section 13.1 for further information.
-
11
REFERENCE SELECT
The drive can accept a variety of references in addition to the conventional analog input,
potentiometer and keypad signals.
1100
KEYPAD MODE RESTART
SPEED
This parameter is only active when parameter 1103 = 1 or 2. When settings 0 to 3 are used,
the drive must be started by pressing the Start key on the keypad. When settings 4 – 7 are
used, the drive starting is controlled by the enable digital input.
1 : Previous
Operating
Speed
0 : MINIMUM SPEED
Following a stop and restart, the drive will always initially run at the minimum speed
parameter 2007 MIN SPEED LIMIT.
1 : PREVIOUS OPERATING
SPEED
Following a stop and restart, the drive will return to the last keypad setpoint speed used
prior to stopping
2 : CURRENT RUNNING
SPEED
Where the ACS255 is configured for multiple speed references (typically Hand / Auto control
or Local / Remote control), when switched to keypad mode by a digital input, the drive will
continue to operate at the last operating speed
3 : PRESET SPEED 4
Following a stop and restart, the ACS255 will always initially run at Preset Speed 4 (Par 1205)
4 : MINIMUM SPEED
(TERMINAL ENABLE)
Following a stop and restart, the drive will always initially run at the minimum speed
parameter 2007 MIN SPEED LIMIT.
5 : PREVIOUS OPERATING
SPEED (TERMINAL
ENABLE)
Following a stop and restart, the drive will return to the last keypad setpoint speed used
prior to stopping.
6 : CURRENT RUNNING
SPEED (TERMINAL
ENABLE)
Where the ACS255 is configured for multiple speed references (typically Hand / Auto control
or Local / Remote control), when switched to keypad mode by a digital input, the drive will
continue to operate at the last operating speed
7 : PRESET SPEED 4
(TERMINAL ENABLE).
Following a stop and restart, the ACS255 will always initially run at Preset Speed 4 (Par 1205)
1103
PRIMARY COMMAND
SOURCE MODE
0: Terminal
Control
0: TERMINAL CONTROL
The drive responds directly to signals applied to the control terminals.
1: UNI-DIRECTIONAL
KEYPAD CONTROL
The drive can be controlled in the forward direction only using an external or remote Keypad.
2: BI-DIRECTIONAL
KEYPAD CONTROL.
The drive can be controlled in the forward and reverse directions using an external or remote
Keypad. Pressing the keypad START button toggles between forward and reverse.
3: PI CONTROL
The output frequency is controlled by the internal PI controller.
4: FIELDBUS CONTROL
Control via Modbus RTU.
5 : CAN BUS CONTROL.
Control via CAN bus connected to the RJ45 serial interface connector
9.4. Parameters in the Long parameter mode
The following table includes the complete descriptions of all parameters that are visible only in the Long parameter mode. See section 9.1 on
page 38 for how to select the parameter mode.
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44
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
12
CONSTANT SPEEDS
Constant speed selection and values.
It is possible to have four constant speeds (positive or negative values).
Constant speeds. Constant speed activation overrides the external speed reference. Constant
speed selections are ignored if the drive is in the local control mode.
Refer to section 8.1 for how to make constant speed selections from the drive control
terminals.
Preset Speeds / Frequencies selected by digital inputs depending on the setting of Parameter
9902.
If Parameter 9908 = 0, the values are entered as Hz. If Parameter 9908 > 0, the values are
entered as Rpm.
Setting a negative value will reverse the direction of motor rotation.
1202
PRESET / JOG FREQUENCY
/ SPEED 1
Defines constant speed 1 (that is the drive output frequency)
5.0Hz/RPM
2007…-2008
Output Frequency
1203
PRESET / JOG FREQUENCY
/ SPEED 2
Defines constant speed 2 (that is the drive output frequency)
10.0Hz/RPM
2007…-2008
Output Frequency
1204
PRESET / JOG FREQUENCY
/ SPEED 3
Defines constant speed 3 (that is the drive output frequency)
25.0Hz/RPM
2007…-2008
Output Frequency
1205
PRESET / JOG FREQUENCY
/ SPEED 4
Defines constant speed 4 (that is the drive output frequency)
60.0Hz/RPM
2007…-2008
Output Frequency
13
ANALOG INPUTS
Analog input signal processing
1300
ANALOG INPUT 1
(TERMINAL 6) FORMAT
Selects the type of reference source into terminal 6.
0 to 10 Volt Signal (Uni-polar)
10 to 0 Volt Signal (Uni-polar)
-10 to +10 Volt Signal (Bi-polar)
0 to 20mA Signal
4 to 20mA Signal, the ACS255 will trip and show the fault code if the signal level falls
below 3mA
4 to 20mA Signal, the ACS255 will ramp to stop if the signal level falls below 3 mA
20 to 4mA Signal, the ACS255 will trip and show the fault code if the signal level falls
below 3mA
20 to 4mA Signal, the ACS255 will ramp to stop if the signal level falls below 3mA
1301
ANALOG INPUT 1 OFFSET
Sets an offset, as a percentage of the full scale range of the input, which is applied to the
analog input signal
0.0%
-500…500 %
Value in percent of the full scale range of the input
Example: If the analog input signal format is 0-10V, offset = 20% .
An analog input signal level of 7 Volts gives the following result :Analog input level (%) = 7/10 = 70%
Result = 70-20 (%) = 50%
1302
ANALOG INPUT 1 SCALING
Scales the analog input by this factor, (as a percentage of the full scale range of this input).
100.0%
0.0…2000.0 %
Example: If parameter 1300 ANALOG INPUT 1 FORMAT is set for 0 – 10V, and the scaling
factor is set to 200.0%, a 5 volt input will result in the drive running at maximum speed as set
in parameter 2008 MAX SPEED LIMIT
1304
ANALOG INPUT 2
(TERMINAL 10) FORMAT
Selects the type of reference source into terminal 10.
0 to 10 Volt Signal (Uni-polar)
10 to 0 Volt Signal (Uni-polar)
Motor PTC Thermistor Input
0 to 20mA Signal
4 to 20mA Signal, the ACS255 will trip and show the fault code if the signal level falls
below 3mA
4 to 20mA Signal, the ACS255 will ramp to stop if the signal level falls below 3 mA
20 to 4mA Signal, the ACS255 will trip and show the fault code if the signal level falls
below 3mA
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45
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
1305
ANALOG INPUT 2 OFFSET
Sets an offset, as a percentage of the full scale range of the input, which is applied to the
analog input signal
0.0%
-500…500 %
Value in percent of the full scale range of the input
Example: If the analog input signal format is 0-10V, offset = 20% .
An analog input signal level of 7 Volts gives the following result :Analog input level (%) = 7/10 = 70%
Result = 70-20 (%) = 50%
1307
ANALOG INPUT 2 SCALING
Scales the analog input by this factor, (as a percentage of the full scale range of this input).
100.0%
0.0…2000.0 %
Example: If parameter 1304 ANALOG INPUT 2 FORMAT is set for 0 – 10V, and the scaling
factor is set to 200.0%, a 5 volt input will result in the drive running at maximum speed as set
in parameter 2008 MAX SPEED LIMIT
14
RELAY OUTPUTS
Status information indicated through relay output and relay operating delays
1401
USER RELAY 1 OUTPUT
(TERMINALS 14, 15 & 16)
FUNCTION SELECT
Selects the function assigned to Relay Output 1. The relay has three output terminals, Logic 1
indicates the relay is active, and therefore terminals 14 and 15 will be linked together.
Note : When using settings 4 – 7, parameters 3203 USER RELAY 1 UPPER LIMIT and 3202
USER RELAY 1 LOWER LIMIT must be used together to control the behavior. The output will
switch to Logic 1 when the selected signal exceeds the value programmed in parameter 3203
USER RELAY 1 UPPER LIMIT, and return to Logic 0 when the signal falls below the value
programmed in parameter 3202 USER RELAY 1 LOWER LIMIT.
1: Drive
Ready
0 : DRIVE ENABLED
(RUNNING).
Logic 1 when the motor is enabled.
1: DRIVE READY
Logic 1 when power is applied to the drive and no fault exists.
2 : AT TARGET FREQUENCY
(SPEED)
Logic 1 when the output frequency matches the setpoint frequency.
3: OUTPUT FREQUENCY >
0.0 HZ
Logic 1 when the drive output frequency to the motor is exceeds 0.0Hz.
4 : OUTPUT FREQUENCY
>= LIMIT
Logic 1 when the motor speed exceeds the adjustable limit. (See note above)
5 : OUTPUT CURRENT >=
LIMIT
Logic 1 when the motor current exceeds the adjustable limit. (See note above)
6 : OUTPUT TORQUE >=
LIMIT
Logic 1 when the motor torque exceeds the adjustable limit. (See note above)
7 : ANALOG INPUT 2
SIGNAL LEVEL >= LIMIT.
Logic 1 when the signal applied to the Analog Input 2 exceeds the adjustable limit. (See note
above)
8 : RESERVED
No Function
9 : RESERVED
No Function
10 : RESERVED
No Function
11 : RESERVED
No Function
12 : DRIVE TRIPPED
Logic 1 when the drive has tripped and the display shows the fault code.
13 : STO STATUS.
Logic 1 when both STO inputs are present and the drive is able to be operated.
1402
USER RELAY 2 OUTPUT
(TERMINALS 17 & 18)
FUNCTION SELECT
Selects the function assigned to Relay Output 2. The relay has three output terminals, Logic 1
indicates the relay is active, and therefore terminals 17 and 18 will be linked together.
Note : When using settings 4 – 7, parameters 3206 USER RELAY 2 UPPER LIMIT and 3205
USER RELAY 2 LOWER LIMIT must be used together to control the behaviour. The output will
switch to Logic 1 when the selected signal exceeds the value programmed in parameter 3206
USER RELAY 2 UPPER LIMIT, and return to Logic 0 when the signal falls below the value
programmed in parameter 3205 USER RELAY 2 LOWER LIMIT.
0 : Drive
Enabled
(Running).
Logic 1
when the
motor is
enabled
1: DRIVE READY
Logic 1 when power is applied to the drive and no fault exists
2 : AT TARGET FREQUENCY
(SPEED)
Logic 1 when the output frequency matches the setpoint frequency
3: OUTPUT FREQUENCY
> 0.0 HZ
Logic 1 when the drive output frequency to the motor is exceeds 0.0Hz
4 : OUTPUT FREQUENCY
>= LIMIT
Logic 1 when the motor speed exceeds the adjustable limit
5 : OUTPUT CURRENT
>= LIMIT
Logic 1 when the motor current exceeds the adjustable limit
6 : OUTPUT TORQUE >=
LIMIT
Logic 1 when the motor torque exceeds the adjustable limit
7 : ANALOG INPUT 2
SIGNAL LEVEL >= LIMIT
1 Logic when the signal applied to the Analog Input 2 exceeds the adjustable limit
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46
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
9 : RESERVED.
No Function
10 : RESERVED
No Function
11 : RESERVED.
No Function
12 : DRIVE TRIPPED
Logic 1 when the drive has tripped and the display shows the fault code.
13 : STO STATUS
Logic 1 when both STO inputs are present and the drive is able to be operated
1404
RELAY OUTPUT
HYSTERESIS CONTROL
This parameter works in conjunction with parameter 1501 ANALOG OUTPUT 1 FUNCTION
SELECT and 1507 ANALOG OUTPUT 2 FUNCTION SELECT = 2 or 3 to set a band around the
target speed (1501 = 2) or zero speed (1501 = 3). When the speed is within this band, the
drive is considered to be at target speed or Zero speed.
This function is used to prevent “chatter” on the relay output if the operating speed
coincides with the level at which the digital / relay output changes state. e.g. if parameter
1507 ANALOG OUTPUT 2 FUNCTION SELECT = 3, 2008 MAXIMUM FREQUENCY/SPEED LIMIT =
50Hz and parameter 1404 = 5%, the relay contacts close above 2.5Hz
0.3%
0.0…25%
15
ANALOG/DIGITAL
OUTPUTS
Analog output signal processing
1501
ANALOG OUTPUT 1
(TERMINAL 8) FUNCTION
SELECT
Selects the type of output signal information indicated from terminal 8.
Note :
When using settings 0 – 7 the output is a digital format (Logic 1 = 24V).
When using settings 8– 11 the output is an analog format.
Note : When using settings 4 – 7, parameters 3203 ADJUSTABLE THRESHOLD 1 UPPER LIMIT
and 3202 ADJUSTABLE THRESHOLD 1 LOWER LIMIT must be used together to control the
behaviour. The output will switch to Logic 1 when the selected signal exceeds the value
programmed in parameters 3203 ADJUSTABLE THRESHOLD 1 UPPER LIMIT, and return to
Logic 0 when the signal falls below the value programmed in 3202 ADJUSTABLE THRESHOLD
1 LOWER LIMIT.
8 : Output
Frequency
(Motor
Speed)
0 : DRIVE ENABLED
(RUNNING)
Logic 1 when the ACS255 is enabled (Running)
1: DRIVE READY
Logic 1 When no Fault condition exists on the drive
2 : AT TARGET FREQUENCY
(SPEED).
Logic 1 when the output frequency matches the setpoint frequency
3 : OUTPUT FREQUENCY
> 0.0
Logic 1 when the motor runs above zero speed
4 : OUTPUT FREQUENCY
>= LIMIT
Logic 1 when the motor speed exceeds the adjustable limit. (See note above)
5 : OUTPUT CURRENT >=
LIMIT
Logic 1 when the motor current exceeds the adjustable limit. (See note above)
6 : MOTOR TORQUE >=
LIMIT
Logic 1 when the motor torque exceeds the adjustable limit. (See note above)
7 : ANALOG INPUT 2
SIGNAL LEVEL >= LIMIT.
Logic 1 when the signal applied to the Analog Input 2 exceeds the adjustable limit. (See note
above)
8 : OUTPUT FREQUENCY
(MOTOR SPEED).
0 to Parameter 2008 MAXIMUM FREQUENCY/SPEED LIMIT
9 : OUTPUT (MOTOR)
CURRENT.
0 to 200% of Parameter 9906 MOTOR RATED CURRENT
10 : MOTOR TORQUE.
0 to 200% of motor rated torque
11 : OUTPUT (MOTOR)
POWER
0 to 150% of drive rated power
1504
ANALOG OUTPUT 1
(TERMINAL 8) FORMAT
Selects the type of output signal from terminal 8
0 to 10V
10 to 0V
0 to 20mA
20 to 0mA
4 to 20mA
20 to 4mA
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47
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
1507
ANALOG OUTPUT 2
(TERMINAL 11) FUNCTION
SELECT
Selects the type of output signal information indicated from terminal 11.
Note :
When using settings 0 – 7 the output is a digital format (Logic 1 = 24V).
When using settings 8– 11 the output is an analog format.
Note : When using settings 4 – 7, parameters 3203 ADJUSTABLE THRESHOLD 1 UPPER LIMIT
and 3202 ADJUSTABLE THRESHOLD 1 LOWER LIMIT must be used together to control the
behaviour. The output will switch to Logic 1 when the selected signal exceeds the value
programmed in parameters 3203 ADJUSTABLE THRESHOLD 1 UPPER LIMIT, and return to
Logic 0 when the signal falls below the value programmed in 3202 ADJUSTABLE THRESHOLD
1 LOWER LIMIT.
9 : Output
(Motor)
Current.
0 : DRIVE ENABLED
(RUNNING)
Logic 1 when the ACS255 is enabled (Running)
1: DRIVE READY
Logic 1 When no Fault condition exists on the drive
2 : AT TARGET FREQUENCY
(SPEED).
Logic 1 when the output frequency matches the setpoint frequency
3 : OUTPUT FREQUENCY
> 0.0
Logic 1 when the motor runs above zero speed
4 : OUTPUT FREQUENCY
>= LIMIT
Logic 1 when the motor speed exceeds the adjustable limit. (See note above)
5 : OUTPUT CURRENT >=
LIMIT
Logic 1 when the motor current exceeds the adjustable limit. (See note above)
6 : MOTOR TORQUE >=
LIMIT
Logic 1 when the motor torque exceeds the adjustable limit. (See note above)
7 : ANALOG INPUT 2
SIGNAL LEVEL >= LIMIT.
Logic 1 when the signal applied to the Analog Input 2 exceeds the adjustable limit. (See note
above)
8 : OUTPUT FREQUENCY
(MOTOR SPEED).
0 to Parameter 2008 MAXIMUM FREQUENCY/SPEED LIMIT
9 : OUTPUT (MOTOR)
CURRENT.
0 to 200% of Parameter 9906 MOTOR RATED CURRENT
10 : MOTOR TORQUE.
0 to 200% of motor rated torque
11 : OUTPUT (MOTOR)
POWER
0 to 150% of drive rated power
1508
ANALOG OUTPUT 2
(TERMINAL 11) FORMAT
Selects the type of output signal from terminal 11
0 to 10V
10 to 0V
0 to 20mA
20 to 0mA
4 to 20mA
20 to 4mA
16 SYSTEM CONTROLS
Run enable, parameter lock etc.
1602
PARAMETER ACCESS
UNLOCK
If parameter 1603 PARAMETER ACCESS CODE DEFINITION has had a value entered, then the
matching value needs to be entered here in order to give read-write access to the
parameters.
0
0…65535
See section 9.5 for more details
1603
PARAMETER ACCESS CODE
DEFINITION
To make all parameters read-only (except parameter 1602 Parameter Access Unlock), enter a
value in this parameter.
0
0…65535
See section 9.5 for more details
20 LIMITS
Drive operation limits
2005
OVER VOLTAGE CURRENT
LIMIT
This parameter is only valid in vector speed control mode and will come into function once
the drive DC bus voltage increases above a preset limit
This voltage limit is set internally just below the over voltage trip level. This parameter will
effectively limit the output torque current in order to prevent a large current flowing back to
the drive, which may cause an Over-voltage trip. A small value in this parameter will limit the
motor control torque when the drive DC bus voltage exceeds the preset limit. A higher value
may cause a significant distortion in the motor current, which may cause an aggressive,
rough motor behaviour.
1.0%
0.0…100.0
Page 47
48
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
2006
MAINS LOSS RIDE
THROUGH / STOP
CONTROL
Controls the behaviour of the drive in response to a loss of mains power supply whilst the
drive is enabled.
0: Mains
Loss Ride
Through.
0: MAINS LOSS RIDE
THROUGH.
The ACS255 will attempt to continue operating by recovering energy from the load motor.
Providing that the mains loss period is short, and sufficient energy can be recovered before
the drive control electronics power off, the drive will automatically restart on return of mains
power.
1: COAST TO STOP.
The ACS255 will immediately disable the output to the motor, allowing the load to coast or
free wheel. When using this setting with high inertia loads, the Spin Start function Parameter
2101 SPIN START ENABLE may need to be enabled.
2: FAST RAMP TO STOP.
The drive will ramp to stop at the rate programmed in the 2nd deceleration time as set in
parameter 2206 2nd DECELERATION RAMP TIME.
3: DC BUS POWER SUPPLY
MODE.
This mode is intended to be used when the drive is powered directly via the +DC and –DC Bus
connections. Refer to your ABB Sales Partner for further details.
2007
MINIMUM FREQUENCY /
SPEED LIMIT
Minimum output frequency or motor speed limit – Hz or rpm.
If parameter 9908 MOTOR RATED SPEED >0, the value entered / displayed is in Rpm
0.0 Hz
0.0 HZ…2008
Minimum frequency
2008
MAXIMUM FREQUENCY /
SPEED LIMIT
Maximum output frequency or motor speed limit – Hz or rpm.
If parameter 9908 MOTOR RATED SPEED >0, the value entered / displayed is in Rpm
60.0 Hz
2007…500.0 Hz
Maximum frequency
2014
TORQUE CONTROL
REFERENCE / LIMIT
SOURCE
When parameter 9903 MOTOR CONTROL MODE = 0, this parameter defines the source for
the maximum output torque limit.
When parameter 9903 MOTOR CONTROL MODE = 1, this parameter defines the source for
the torque reference (setpoint).
0: Fixed
Digital
0: FIXED DIGITAL
The torque controller reference / limit is set in parameter 2017 MAXIMUM MOTORING
TORQUE LIMIT/CURRENT LIMIT.
1: ANALOG INPUT 1
The output torque is controlled based on the signal applied to Analog Input 1, whereby 100%
input signal level will result in the drive output torque being limited by the value set in
parameter 2017 MAXIMUM MOTORING TORQUE LIMIT/CURRENT LIMIT.
2: ANALOG INPUT 2
The output torque is controlled based on the signal applied to Analog Input 2, whereby 100%
input signal level will result in the drive output torque being limited by the value set in
parameter 2017 MAXIMUM MOTORING TORQUE LIMIT/CURRENT LIMIT..
3: FIELDBUS.
The output torque is controlled based on the signal from the communications Fieldbus,
whereby 100% input signal level will result in the drive output torque being limited by the
value set in parameter 2017 MAXIMUM MOTORING TORQUE LIMIT/CURRENT LIMIT..
2015
MINIMUM MOTORING
TORQUE LIMIT
Active only in Vector Speed or Vector Torque motor control modes (9903 MOTOR CONTROL
MODE = 0 or 1). Sets a minimum torque limit, whereby when the ACS255 is enabled, it will
always attempt to maintain this torque on the motor at all times whilst operating.
WARNING : This parameter should be used with extreme care, as the drive output frequency
will increase to achieve the torque level, and may exceed the selected speed reference.
0.0%
0.0 %…2017
2017
MAXIMUM MOTORING
TORQUE LIMIT / CURRENT
LIMIT
When operating in Vector Speed or Vector Torque motor control modes (9903 MOTOR
CONTROL MODE = 0 or 1) this parameter defines the maximum torque limit or reference
used by the drive in conjunction with parameter 2014 TORQUE CONTROL REFERENCE/LIMIT
SOURCE .
When operating in V/F Mode (9903 MOTOR CONTROL MODE = 2), this parameter defines the
maximum output current the drive will provide to the motor before reducing the output
frequency to attempt to limit the current.
Active only in Vector Speed or Vector Torque motor control modes (parameter 9903 = 0,1,3).
Sets the maximum regenerating torque allowed by the ACS255
200.0%
0.0…500 %
21 START/STOP
Start and Stop modes of the motor
2101
SPIN START ENABLE
Starting the drive connected to a rotating motor.
0 : Disabled
0 : DISABLED
1 : ENABLED
On start up the drive will attempt to determine if the motor is already rotating, and will
begin to control the motor from its current speed. A short delay may be observed when
starting motors which are not turning.
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49
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
2102
STOP MODE
Selects the motor stop function
0 : RAMP TO
STOP
0 : RAMP TO STOP
When the enable signal is removed, the drive will ramp to stop, with the rate controlled by
parameter 2203 DECEL RAMP TIME as described above. In this mode, the drive brake
transistor is disabled
1 : COAST TO STOP
When the enable signal is removed, the drive output is immediately disabled, and the motor
will coast (freewheel) to stop. If the load can continue to rotate due to inertia, and the drive
may possibly be re-enabled while the motor is still rotating, the spin start function
(Parameter 2101 SPIN START ENABLE) should be enabled. In this mode, the drive brake
transistor is disabled.
2 : RAMP TO STOP
When the enable signal is removed, the drive will ramp to stop, with the rate controlled by
Parameter 2203 DECEL RAMP TIME as described above. The ACS255 Brake chopper is also
enabled in this mode.
3 : COAST TO STOP
When the enable signal is removed, the drive output is immediately disabled, and the motor
will coast (freewheel) to stop. If the load can continue to rotate due to inertia, and the drive
may possibly be re-enabled while the motor is still rotating, the spin start function
(Parameter 2101 SPIN START ENABLE) should be enabled. The drive brake chopper is enabled
in this mode, however it will only activate when required during a change in the drive
frequency setpoint, and will not activate when stopping.
2103
V/F MODE MAGNETISING
PERIOD
This parameter is used to set up a minimum delay time for the magnetising current control in
V/F mode when drive run signal is given. Too small a value may cause the drive to trip on
over-current if the acceleration ramp is very short.
-
0…5000 ms
2106
DC INJECTION BRAKING
VOLTAGE
Sets the amount of dc voltage as a percentage of the nominal voltage (9905 MOTOR RATED
VOLTAGE) that is applied to the motor when a stop command is received. This parameter is
enabled only for V/f control.
0.0
, 0.0…25.0 %
2108
START MODE SELECT /
AUTOMATIC RESTART
Defines the behaviour of the drive relating to the enable digital input and also configures the
Automatic Restart function.
Following Power on or reset, the drive will not start if Digital Input 1 remains closed. The
Input must be closed after a power on or reset to start the drive.
Following a Power On or Reset, the drive will automatically start if Digital Input 1 is closed.
to
Following a trip, the drive will make up to 5 attempts to restart at 20 second intervals. The
drive must be powered down to reset the counter. The numbers of restart attempts are
counted, and if the drive fails to start on the final attempt, the drive will fault with, and will
require the user to manually reset the fault
DANGER! “modesallow the drive to Auto-start, therefore the impact on
System/Personnel safety needs to be considered.
2110
LOW FREQUENCY TORQUE
BOOST
Boost current applied at start-up, as % of motor rated current (Parameter 9906 Motor Rated
Current). The drive provides a boost function that can inject some current into the motor at
low speed to help ensure the rotor alignment is maintained and to allow effective operation
of the motor at lower speeds. To implement low speed boost, run the drive at the lowest
frequency required by the application and increase boost levels to provide both required
torque and smooth operation.
0.0 %
0.0…100.0 %
2111
TORQUE BOOST
FREQUENCY LIMIT
Frequency range for applied boost current (Parameter 2110 LOW FREQUENCY TORQUE
BOOST) as a % of motor rated frequency (Parameter 9907 Motor Rated Frequency). This sets
the frequency cut-off point above which boost current is no longer applied to the motor.
0.0 %
0.0…50.0 %
2112
ZERO SPEED HOLDING
TIME
Determines the time for which the drive output frequency is held at zero when stopping,
before the drive output is disabled
0.2 s
0.0…60.0 s
22 ACCEL/DECEL
Acceleration and deceleration times
2202
ACCELERATION RAMP
TIME
Acceleration ramp time from 0 to base speed (Parameter 9907 MOTOR RATED FREQUENCY)
in seconds.
5.0 s
0.00…600.0 s
Time
2203
DECELERATION RAMP
TIME
Deceleration ramp time from base speed (Parameter 9907 MOTOR RATED FREQUENCY) to
standstill in seconds. When set to zero, fastest possible ramp time without trip is activated.
5.0 s
0.00…600.0 s
Time
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50
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
2206
2nd DECELERATION RAMP
TIME
This parameter allows an alternative deceleration ramp down time to be programmed into
the ACS255, which can be selected by digital inputs (dependent on the setting of Parameter
9902 DIGITAL INPUTS FUNCTION SELECT or selected automatically in the case of a mains
power loss if parameter 2006 MAINS LOSS RIDE THROUGH / STOP CONTROL = 2.
0.00
0.00…240.0 s
When set to 0.0, the drive will coast to stop.
2210
FIELDBUS RAMP CONTROL
Selects whether the acceleration and deceleration ramps are controlled directly via the
fieldbus, or by internal drive parameters 2202 ACCELERATION RAMP TIME and 2203
DECELERATION RAMP TIME.
0 : Disabled
0 : Disabled
Ramps are controlled from internal drive parameters.
1 : Enabled
Ramps are controlled directly by filedbus.
23 VECTOR CONTROL MODE
OPTIMISE
2301
VECTOR SPEED
CONTROLLER
PROPORTIONAL GAIN
Sets the proportional gain value for the speed controller when operating in Vector Speed or
Vector Torque motor control modes (parameter 9903 MOTOR CONTROL MODE = 0 ,1,3).
Higher values provide better output frequency regulation and response. Too high a value can
cause instability or even over current trips. For applications requiring best possible
performance, the value should be adjusted to suit the connected load by gradually increasing
the value and monitoring the actual output speed of the load until the required dynamic
behaviour is achieved with little or no overshoot where the output speed exceeds the
setpoint.
In general, higher friction loads can tolerate higher values of proportional gain, and high
inertia, low friction loads may require the gain to be reduced.
50.0 %
0.1…400.0 %
2302
VECTOR SPEED
CONTROLLER INTEGRAL
TIME CONSTANT
Sets the integral time for the speed controller. Smaller values provide a faster response in
reaction to motor load changes, at the risk of introducing instability. For best dynamic
performance, the value should be adjusted to suit the connected load.
0.050 s
0.000…2.000 s
2303
VECTOR SPEED CONTROL
D GAIN
Sets the differential gain (%) for the speed controller in vector mode operation (parameter
9903 MOTOR CONTROL MODE = 0).
0.0 %
0.0…400.0 %
2305
SYSTEM INERTIA
CONSTANT
System Load Inertia to Motor Inertia Ratio entered as H = (JTot / JMot). This value can
normally be left at the default value (10) and is used by the drive control algorithms as a
feed-forward control variable to provide optimum torque current to accelerate the load.
Hence accurate setting of the inertia ratio will produce a better system response and
dynamics. If the value is unknown then leave this set to the default value (10).
10
0…600
25 CRITICAL SPEEDS
Speed bands with which the drive is not allowed to operate.
The Skip Frequency function is used to avoid the ACS255 operating at a certain output
frequency, for example at a frequency which causes mechanical resonance in a particular
machine.
2500
SKIP FREQUENCY BAND
WIDTH
The ACS255 output frequency will ramp through the defined band at the rates set in
parameter 2202 ACCELERATION RAMP TIME and parameter 2203 DECELERATION RAMP
TIME respectively, and will not hold any output frequency within the defined band. If the
frequency reference applied to the drive is within the band, the ACS255 output frequency
will remain at the upper or lower limit of the band.
0.0 Hz/Rpm
0.0…2008
2501
SKIP FREQUENCY CENTRE
POINT
Defines the center point of the skip frequency band, and is used in conjunction with
Parameter 2500 SKIP FREQUENCY BAND WIDTH.
0.0 Hz/Rpm
2007…2008
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51
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
26 MOTOR CONTROL
Motor control variables
2601
ENERGY OPTIMIZER
Only active when enhanced V/F motor control mode is selected (parameter 9903 MOTOR
CONTROL MODE = 2)
0 : Disabled
0 : DISABLED
1 : ENABLED
The Energy Optimizer attempts to reduce the overall energy consumed by the drive and
motor when operating at constant speeds and light loads. The output voltage applied to the
motor is reduced. The Energy Optimizer is intended for applications where the drive may
operate for some periods of time with constant speed and light motor load, whether
constant or variable torque.
2603
V/F MODE VOLTAGE
BOOST
Voltage boost is used to increase the applied motor voltage at low output frequencies, in
order to improve low speed and starting torque. Excessive voltage boost levels may result in
increased motor current and temperature, and force ventilation of the motor may be
required.
An automatic setting () is also possible, whereby the ACS255 will automatically adjust
this parameter based on the motor parameters measured during an autotune.
Drive rating
dependant
2606
EFFECTIVE SWITCHING
FREQUENCY
Effective power stage switching frequency. The range of settings available and factory
default parameter setting depend on the drive power and voltage rating. Higher frequencies
reduce the audible ‘ringing’ noise from the motor, and improve the output current
waveform, at the expense of increased drive losses. Refer to section 11.5.3 on page 60 for
further information regarding operation at higher switching frequency.
Drive Rating
Dependent
4…32 kHz
2607
AUTOMATIC THERMAL
MANAGEMENT
Drive will automatically reduce the output switching frequency to this value at higher heat
sink temperature, to reduce the risk of an over temperature trip.
4kHz
4…32kHz
2610
V/F CHARACTERISTIC
ADJUSTMENT VOLTAGE
Used in conjunction with parameter 2611
0 %
0 %…100% of 9905
2611
V/F CHARACTERISTIC
ADJUSTMENT FREQUENCY
When operating in V/F mode (Parameter 9903 = 2), this parameter in conjunction with
parameter 2610 sets a frequency point at which the voltage set in Parameter 2610 is applied
to the motor. Care must be taken to avoid overheating and damaging the motor when using
this feature.
0 %
0.0 %…100% of 9907
30 FAULT FUNCTIONS
Programmable protection functions
3005
THERMAL OVERLOAD
VALUE RETENTION
0 :
DISABLED
0 : DISABLED
Alternative means of protecting the motor from thermal overload must be applied (e.g. PTC
thermistor)
1 : ENABLED
The drive will retain the motor thermal overload value following a mains power cycle.
3018
COMMUNICATION LOSS
ACTION
Controls the behaviour of the drive following a loss of communications as determined by the
above parameter setting.
0 : Trip &
Coast To
Stop
0 : TRIP & COAST TO STOP
1 : RAMP TO STOP THEN
TRIP
2 : RAMP TO STOP ONLY
(NO TRIP)
3 : RUN AT PRESET SPEED
4
Runs at the value set in parameter 1205 PRESET / JOG FREQUENCY / SPEED 4.
3019
COMMUNICATIONS LOSS
TIMEOUT
Sets the watchdog time period for the communications channel. If a valid telegram is not
received by the ACS255 within this time period, the drive will assume a loss of
communications has occurred and react as selected below. Setting to zero disables the
function.
1.0
0.0…5.0 s
31 AUTOMATIC RESET
Automatic fault reset. Automatic resets are possible only for certain fault types and when the
automatic reset function is activated.
3103
AUTO RESET TIME DELAY
Sets the delay time which will elapse between consecutive reset attempts when Auto Resest
is enabled in Parameter 2108 START MODE SELECT / AUTOMATIC RESTART.
1…60 s
20 s
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52
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
32 SUPERVISION
Signal supervision. The drive monitors whether certain user selectable variables are within
the user-defined limits. The user may set limits for speed, current etc. Supervision status can
be monitored with relay output. See parameter group 14 RELAY OUTPUTS.
Used in conjunction with some settings of parameter 1501 ANALOG OUTPUT 1 (TERMINAL 8)
FUNCTION SELECT & parameter 1401 USER RELAY 1 OUTPUT (TERMINALS 14, 15 & 16)
FUNCTION SELECT.
Used in conjunction with some settings of parameter 1501 ANALOG OUTPUT 1 (TERMINAL 8)
FUNCTION SELECT & parameter 1401 USER RELAY 1 OUTPUT (TERMINALS 14, 15 & 16)
FUNCTION SELECT.
Used in conjunction with some settings of Parameter 1507 ANALOG OUTPUT 2 (TERMINAL
11) FUNCTION SELECT & 1402 USER RELAY 2 OUTPUT (TERMINALS 17 & 18) FUNCTION
SELECT.
100.0 %
3205…200.0%
33 INFORMATION
Firmware update.
3399
FIRMWARE UPGRADE
ABB Internal use only.
34 PANEL DISPLAY
Selection of actual signals to be displayed on the drives front panel e.g. to display conveyer
speed in feet per second based on the output frequency
3400
DISPLAY SCALING FACTOR
Allow the user to display an alternative output unit scaled from an existing parameter. This
function is disabled if set to 0.
0.000
-30.000…30.000
3405
DISPLAY SCALING SOURCE
If parameter 3400 DISPLAY SCALING FACTOR set >0, the variable selected in parameter 3405
DISPLAY SCALING SOURCE is multiplied by the factor entered in 3400 DISPLAY SCALING
FACTOR, and displayed whilst the drive is running, with a ‘c’ to indicate the customer scaled
units.
0
0 : Motor Speed
Hertz/Rpm
1 : Motor Current
Ampere
2 : Analog Input 2
%
40 PROCESS PI SETUP
Process PI control parameter set
4001
PI PROPORTIONAL GAIN
PI Controller Proportional Gain. Higher values provide a greater change in the drive output
frequency in response to small changes in the feedback signal. Too high a value can cause
instability
1.0
0.0…30.0
4002
PI INTEGRAL TIME
CONSTANT
PI Controller Integral Time. Larger values provide a more damped response for systems
where the overall process responds slowly
1.0 s
0.0…30.0 s
4005
PI Operating Mode
0
0 : DIRECT OPERATION
Use this mode if an increase in the motor speed should result in an increase in the feedback
signal
1 : INVERSE OPERATION
Use this mode if an increase in the motor speed should result in a decrease in the feedback
signal
4010
PI Reference (Setpoint)
Source Select
Selects the source for the PI Reference / Setpoint
0
0
Digital Preset Setpoint. Parameter 4011 PI Digital Reference (Setpoint) is used
1
Analog Input 1 Setpoint
2
Analog Input 2 Setpoint
4011
PI Digital Reference
(Setpoint)
When parameter 4010 PI REFERENCE (SETPOINT) SOURCE SELECT = 0, this parameter sets
the preset digital reference (setpoint) used for the PI Controller
0 %
0.0…100.0 %
4016
PI Feedback Signal Source
Select
0
0
Analog Input 2
1 Analog Input 1
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53
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
45 ENERGY METER RESET
4509
ENERGY CONSUMPTION
(KWH) Meter Reset
0 No Function
0
1 Setting to 1 resets internal kWh meter to zero (as displayed in parameter 0115 ENERGY
CONSUMPTION KWH METER and parameter 0141 ENERGY CONSUMPTION MWH METER.
53 COMMUNICATIONS
PARAMETERS
5302
DRIVE FIELDBUS
ADDRESS
Sets the fieldbus address for the ACS255
1
0…63
5303
Modbus RTU Baud Rate
Sets the baud rate when Modbus RTU communications are used
115.2 kbps
9.6…115.2 kbps
5304
Modbus Data Format
Sets the expected Modbus telegram data format.
No Parity, 1 stop bit
No parity, 2 stop bits
Odd parity, 1 stop bit
Even parity, 1 stop bit
5305
CAN Open Baud Rate
Sets the baud rate when CAN Open communications are used
500 kbps
125…1000 kbps
99 START-UP DATA
Definition of motor set-up data.
9902 Digital Inputs
Function Select
Defines the function of the digital inputs depending on the control mode setting in
Parameter 1103 PRIMARY COMMAND SOURCE MODE.
1
9903
Motor Control Mode
Selects the motor control method. An autotune must be performed if setting 0, 1 or 3 is used.
2: Speed
Control
(Enhanced
V/F)
0: Speed Control with
Torque Limit (vector)
1: Torque Control with
Speed Limit (vector)
2: Speed Control
(Enhanced V/F)
3 : PM Vector
4 : Reserved
9905
MOTOR RATED VOLTAGE
This parameter should be set to the rated (nameplate) voltage of the motor (Volts).
Drive Rating
Dependent
0…660V
Voltage
Note : The stress on the motor insulation is always dependant on the drive supply voltage.
This also applies in the case where the motor voltage rating is lower than the rating of the
drive and the supply of the drive.
9906
MOTOR RATED CURRENT
This parameter should be set to the rated (nameplate) current of the motor.
Drive Rating
Dependent
0.2* drive rated output
current…1.0* drive rated
output current
Current
9907
MOTOR RATED FREQ
This parameter should be set to the rated (nameplate) frequency of the motor
60Hz
25…500Hz
Frequency
9908
MOTOR RATED SPEED
This parameter can optionally be set to the rated (nameplate) rpm of the motor. When set to
the default value of zero, all speed related parameters are displayed in Hz, and the slip
compensation for the motor is disabled. Entering the value from the motor nameplate
enables the slip compensation function, and the ACS255 display will now show motor speed
in estimated rpm. All speed related parameters, such as Minimum and Maximum Speed,
Preset Speeds etc. will also be displayed in Rpm.
0 Rpm
0…30000 Rpm
9910
MOTOR PARAMETER
AUTO-TUNE ENABLE
Drive measures the motor parameters for optimum control and efficiency. Following
completion of the autotune.
0 : DISABLE
0 : DISABLE
1: ENABLE
Drive immediately carries out a non-rotating autotune, parameter 9910 MOTOR PARAMETER
AUTO-TUNE ENABLE returns to 0 when completed.
9915
Motor Power Factor Cos
Ø
When operating in Vector Speed or Vector Torque motor control modes, this parameter must
be set to the motor nameplate power factor
-
0.00…0.99
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54
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
112 Vector mode advanced motor
data
Only valid when parameter 9903 Motor Control Mode is 0,1, 3.
WARNING! The following parameters are used internally by the drive to provide optimum
possible motor control. Incorrect setting of the parameters can result in poor performance
and unexpected behaviour of the motor. Adjustments should only be carried out by
experienced users who fully understand the functions of the parameters.
11201
MOTOR STATOR
RESISTANCE (Rs)
Motor stator resistance value measured during the autotune.
-
11202
MOTOR ROTOR
RESISTANCE (Rr)
Phase to phase rotor resistance value in ohms.
-
11203
MOTOR STATOR
INDUCTANCE (Lsd)
For induction motors: phase stator inductance value.
-
11204
MOTOR MAGNETISING
CURRENT (Id rms)
For induction motors: magnetizing / no load current. Before Auto-tune, this value is
approximated to 60% of motor rated current (parameter 9906 MOTOR RATED CURRENT),
assuming a motor power factor of 0.8.
11205
MOTOR LEAKAGE
COEFFICIENT (Sigma)
Motor leakage inductance coefficient
-
11207
Quick Rs Measurement
Enable
Allows the stator resistance parameter 11201 MOTOR STATOR RESISTANCE to be adapted
during normal operation.
0 : DISABLE
1 : ENABLE
11208
MOTOR PARAMETER
ADAPTATION ENABLE
Allows the stator inductance parameter 11203 MOTOR STATOR INDUCTANCE to be adapted
during normal operation.
0 : DISABLE
1 : ENABLE
11209
PULSE WIDTH MINIMUM
LIMIT
This parameter is used to limit the minimum output pulse width, which can be used for long
cable applications. Increasing the value of this parameter will reduce the risk of over-current
trips on long motor cables, but will also reduce the maximum available output motor voltage
for a given input voltage.
-
0…500
1602
Parameter Access Unlock
0…65535
1603
Parameter Access code
0…65535
9.5. Preventing un-authorized parameter editing.
This function can be used to prevent an un-authorized person from changing the drive parameter values; this function is disabled when delivered
from the factory.
Relevant Parameters
Locking Parameter Access
1) Go to Parameter 1603 (Long Parameter group) and enter in your chosen parameter access code.
2) Press the button to exit and parameter 1603 will then be hidden and all parameters will be “Read only” (except for Parameter
1602 which will remain “Read Write”.
Unlocking Parameter Access
1) Enter into Parameter 1602 the same value as 1603 (as chosen in step 1 above).
2) All parameters will now be “Read Write” and parameter 1603 will become visible and show the value which was originally
programmed as the parameter access code.
3) To disable this feature set parameter 1603 PARAMETER ACCESS CODE to zero and then 1602 PARAMETER ACCESS UNLOCK to
zero.
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55
CAN-
CAN+
0 Volt
Remote Keypad / PC Connection -
Remote Keypad / PC Connection +
+24 Volt Remote Keypad Power Supply
RS 485- Modbus RTU
RS 485+ Modbus RTU
Command 03 – Read Holding Registers
Master Telegram
Length
Slave Response
Length
Slave Address
1
Byte Slave Address
1
Byte
Function Code (03)
1
Byte Function Code (03)
1
Byte
1st Register Address
2
Bytes
Byte Count
1
Byte
No. Of Registers
2
Bytes
1st Register Value
2
Bytes
CRC Checksum
2
Bytes
2nd Register Value
2
Bytes
Etc...
CRC Checksum
2
Bytes
Command 06 – Write Single Holding Register
Master Telegram
Length
Slave Response
Length
Slave Address
1
Byte Slave Address
1
Byte
Function Code (06)
1
Byte Function Code (06)
1
Byte
Register Address
2
Bytes
Register Address
2
Bytes
Value
2
Bytes
Register Value
2
Bytes
CRC Checksum
2
Bytes
CRC Checksum
2
Bytes
10. Serial communications
10.1. RJ45 Connector Pin Assignment
ACS255 has an RJ45 connector on the front of the control panel. This connector allows the user to set up a drive network via a wired connection.
The connector contains multiple interfaces for different communication protocols.
PC and peripheral connection only
Modbus RTU
CANBus
The Remote keypad connection is always available, and can be used simultaneously with other interfaces, however only one other interface may
be used, e.g. If Modbus RTU is in use, CAN is disabled.
The electrical signal arrangement of the RJ45 connector is shown as follows:
10.2. Modbus RTU Communications
10.2.1. Modbus Telegram Structure
The ACS255 supports Master / Slave Modbus RTU communications, using the 03 Read Holding Registers and 06 Write Single Holding Register
commands. Many Master devices treat the first Register address as Register 0; therefore it may be necessary to convert the Register Numbers
detailed in section 10.2.4 by subtracting 1 to obtain the correct Register address. The telegram structure is as follows.
Page 55
56
Register
Number
Upper Byte
Lower Byte
Read
Write
Notes
1
Command Control Word
R/W
Command control word used to control the ACS255 when operating with Modbus
RTU. The Control Word bit functions are as follows :Bit 0 : Run/Stop command. Set to 1 to enable the drive. Set to 0 to stop the drive.
Bit 1 : Fast stop request. Set to 1 to enable drive to stop with 2nd deceleration ramp.
Bit 2 : Reset request. Set to 1 in order to reset any active faults or trips on the drive.
This bit must be reset to zero once the fault has been cleared.
Bit 3 : Coast stop request. Set to 1 to issue a coast stop command.
2
Command Speed Reference
R/W
Setpoint must be sent to the drive in Hz to one decimal place, e.g. 500 = 50.0Hz
3
Command Torque Reference
R/W
Setpoint must be sent to the drive in % to one decimal place, e.g. 2000 = 200.0%
4
Command Ramp times
R/W
This register specifies the drive acceleration and deceleration ramp times used when
Fieldbus Ramp Control is selected (2210 FIELDBUS RAMP CONTROL = 1) irrespective of
the setting of 1103 PRIMARY COMMAND SOURCE MODE. The input data range is from
0 to 60000 (0.00s to 600.00s)
6
Error code
Drive status
R
This register contains 2 bytes.
The Lower Byte contains an 8 bit drive status word as follows :Bit 0 : 0 = Drive Disabled (Stopped), 1 = Drive Enabled (Running)
Bit 1 : 0 = Drive Healthy, 1 = Drive Tripped
The Upper Byte will contain the relevant fault number in the event of a drive trip.
Refer to section 13.1 on page 62 for a list of fault codes and diagnostic information
7
Output Frequency
R
Output frequency of the drive to one decimal place, e.g.123 = 12.3 Hz
8
Output Current
R
Output current of the drive to one decimal place, e.g.105 = 10.5 Amps
9
Output Torque
R
Motor output torque level to one decimal place, e.g. 474 = 47.4 %
10
Output Power
R
Output power of the drive to two decimal places, e.g.1100 = 11.00 kW
11
Digital Input Status
R
Represents the status of the drive inputs where Bit 0 = Digital Input 1 etc.
20
Analog 1 Level
R
Analog Input 1 Applied Signal level in % to one decimal place, e.g. 1000 = 100.0%
21
Analog 2 Level
R
Analog Input 2 Applied Signal level in % to one decimal place, e.g. 1000 = 100.0%
22
Pre Ramp Speed Reference
R
Internal drive frequency setpoint
23
DC bus voltages
R
Measured DC Bus Voltage in Volts
24
Drive temperature
R
Measured Heatsink Temperature in °C
10.2.2. Modbus Control & Monitoring Registers
The following is a list of accessible Modbus Registers available in the ACS255.
When Modbus RTU is configured as the Fieldbus option, all of the listed registers can be accessed.
Registers 1 and 2 can be used to control the drive providing that Modbus RTU is selected as the primary command source (1103
PRIMARY COMMAND SOURCE MODE = 4).
Register 3 can be used to control the output torque level providing that
o The drive is operating in Vector Speed or Vector Torque motor control modes (9903 MOTOR CONTROL MODE = 1 or 2).
o The torque controller reference / limit is set for ‘Fieldbus’ (2014 TORQUE CONTROL REFERENCE / LIMIT SOURCE = 3).
Register 4 can be used to control the acceleration and deceleration rate of the drive providing that Fieldbus Ramp Control is enabled
(2210 FIELDBUS RAMP CONTROL = 1).
Registers 6 to 24 can be read regardless of the setting of parameter 1103 PRIMARY COMMAND SOURCE MODE.
10.2.3. Modbus Parameter Access
All User Adjustable parameters are accessible by Modbus, except those that would directly affect the Modbus communications, e.g.
5302 DRIVE FIELDBUS ADDRESS
5303 Modbus RTU Baud Rate
5304 Modbus Data Format
5305 CAN Open Baud Rate
All parameter values can be read from the drive and written to, depending on the operating mode of the drive – some parameters cannot be
changed whilst the drive is enabled for example.
When accessing a drive parameter via Modbus, the Register number for the parameter is in the order of the long parameter list (See page 43
with the first register being 129 (Parameter 0401 TRIP HISTORY LOG).
Modbus RTU supports sixteen bit integer values, hence where a decimal point is used in the drive parameter; the register value will be multiplied
by a factor of ten,
E.g. Read Value of parameter 2008 = 500, therefore this is 50.0Hz.
For further details on communicating with ACS255 using Modbus RTU, please refer to your local ABB representative.
Input current measurements are at 575VAC at drive nominal output current.
Ratings shown above apply to 40°C Ambient temperature. For derating information, refer to section 11.5.1 on page 60.
The maximum motor cable length stated applies to using a shielded motor cable. When using an unshielded cable, the maximum cable length
limit may be increased by 50%. When using the ABB Drives recommended output choke, the maximum cable length may be increased by 100%
The PWM output switching from any inverter when used with a long motor cable length can cause an increase in the voltage at the motor
terminals, depending on the motor cable length and inductance. The rise time and peak voltage can affect the service life of the motor. ABB
Drives recommend using an output choke for motor cable lengths of 50m or more to ensure good motor service life
For UL compliant installation, use Copper wire with a minimum insulation temperature rating of 70°C, UL Class CC or Class J Fuses
11. Technical Data
11.1. Environmental
Ambient temperature range: Operational : -10 … 50 C (Refer to section 11.5 for Derating Information)
Storage and Transportation : -40 C … 60 C
Max altitude for rated operation : 1000m (Refer to section 11.5 for derating Information)
Relative Humidity : < 95% (non condensing)
Note : Drive must be Frost and moisture free at all times
Installation above 2000m is not UL approved
11.2. Input/Output Current ratings and fuses
The following tables provide the output current rating information for the various ACS255 models. ABB Drives always recommend that selection
of the correct ACS255 is based upon the motor full load current at the incoming supply voltage.
Cable dimensioning for nominal rated currents is shown in the table below together with the corresponding fuse types for short-circuit
protection of the input power cable.
The rated fuse currents given in the table are the maximums for the mentioned fuse types. If smaller fuse ratings are used, check that the fuse
rms current rating is larger than the nominal input current.
If 150% output power is needed, multiply nominal input current by 1.5.
Check that the operating time of the fuse is below 0.5 seconds. The operating time depends on the fuse type, the supply network impedance as
well as the cross-sectional area, material and length of the supply cable. In case the 0.5 seconds operating time is exceeded with the gG or T
fuses, ultra rapid (aR) fuses in most cases reduce the operating time to an acceptable level.
Note: Larger fuses must not be used when the input power cable is selected according to this table.
11.3. Overload
The ACS255 can deliver 150% of the drive nominal output current for 60 seconds and 200 % for 3 seconds.
Maximum 3% voltage variation between phase – phase voltages allowed
All ACS255 units have phase imbalance monitoring. A phase imbalance of > 3% will result in the drive tripping. For
input supplies which have supply imbalance greater than 3% (typically the Indian sub- continent & parts of Asia Pacific
including China) ABB Drives recommends the installation of input line reactors. Alternatively.
Frequency
50 – 60Hz + / - 5% Variation
Short Circuit Capacity
Voltage Rating
Min HP
Max HP
Maximum supply short-circuit current
600
1
20
100kA rms (AC)
All the drives in the above table are suitable for use on a circuit capable of delivering not more than the above
specified maximum short-circuit Amperes symmetrical with the specified maximum supply voltage.
Incoming power supply connection must be according to section 5.9
All ACS255 units are intended for indoor installation within controlled environments which meet the condition limits shown in section 11.1 on
page 59.
Branch circuit protection must be installed according to the relevant national codes. Fuse ratings and types are shown in section 11.2 on page
59.
Suitable Power and motor cables should be selected according to the data shown in section 11.2 on page 59.
Power cable connections and tightening torques are shown in section 4.4 on page 15.
ACS255 provides motor overload protection in accordance with the National Electrical Code (US).
Where a motor thermistor is not fitted, or not utilised, Thermal Overload Memory Retention must be enabled by setting 3005
THERMAL OVERLOAD VALUE RETENTION = 1
Where a motor thermistor is fitted and connected to the drive, connection must be carried out according to the information shown in
section 5.7.2
Enclosure Type
Maximum Temperature
Without Derating.
(UL Approved)
Derate by
Maximum Permissible Operating
Ambient Temperature with
Derating (Non UL Approved)
IP20
50°C / 122°F
N/A
50°C
IP66
40°C / 104°F
2.5% per °C (1.8°F)
50°C
Enclosure Type
Maximum Altitude
Without Derating
Derate by
Maximum Permissible
(UL Approved)
Maximum Permissible
(Non-UL Approved)
IP20
1000m / 3281ft
1% per 100m / 328 ft
2000m / 6562 ft
4000m / 13123 ft
IP66
1000m / 3281ft
1% per 100m / 328 ft
2000m / 6562 ft
4000m / 13123 ft
Switching Frequency (Where available)
Enclosure Type
4kHz
8kHz
12kHz
16kHz
24kHz
32kHz
IP20
N/A
N/A
20%
30%
40%
50%
IP66
N/A
10%
25%
35%
50%
50%
11.4. Additional Information for UL Approved Installations
ACS255 is designed to meet the UL requirements. In order to ensure full compliance, the following must be fully observed.
11.5. Derating Information
Derating of the drive maximum continuous output current capacity is required when
Operating at ambient temperature in excess of 40°C / 104°F
Operating at Altitude in excess of 1000m/ 3281 ft
Operation with Effective Switching Frequency higher than the minimum setting
The following derating factors should be applied when operating drives outside of these conditions
11.5.1. Derating for Ambient Temperature
11.5.2. Derating for Altitude
11.5.3. Derating for Switching Frequency
11.5.4. Example of applying Derating Factors
If a 5 HP IP66 drive is to be used at an altitude of 2000 metres above sea level, with 12kHz switching frequency and 45°C ambient temperature.
From the table above, we can see that the rated current of the drive is 9.5 Amps at 40°C,
Firstly, apply the switching frequency derating, 12kHz, 25% derating
9.5 Amps x 75% = 7.1 Amps
Now, apply the derating for higher ambient temperature, 2.5% per °C above 40°C = 5 x 2.5% = 12.5%
7.1 Amps x 87.5% = 6.2 Amps
Now apply the derating for altitude above 1000 metres, 1% per 100m above 1000m = 10 x 1% = 10%
7.9 Amps x 90% = 5.5 Amps continuous current available.
If the required motor current exceeds this level, it will be necessary to either:
- Reduce the switching frequency selected
- Use a higher power rated drive and repeat the calculation to ensure sufficient output current is available.
Page 60
61
Action
Additional Information
Enable PMSM
motor control
Set 9903 to 3
Enter motor backEMF voltage value
Enter Back EMF value into 9905
The phase to phase value (at motor rated Speed) should be obtained from the
motor nameplate or datasheet. If the voltage is given as a proportional value,
such as 103V/1000 rpm in a 3000rpm motor, set 309V here. Sometimes the
value is given as the peak value. In this case divide the value by the square
root of 2 (1.41).
Note: Incorrect value can result in abnormal motor operation (motor vibration)
Enter Motor
Rated Current
Enter value into 9906
Obtained from Motor nameplate (Amps).
Enter Motor
Rated Frequency
Enter value into 9907
Note : The drive uses 9907 to calculate the number of motor pole pairs.
Frequency (Hz) = speed (rpm) x (number of pole pairs) / 60
Enter Motor
Rated Speed
Enter value into 9908
Obtained from Motor nameplate (rpm)
Speed (rpm) = frequency (Hz) x 60 / (number of pole pairs)
Set Motor
Switching Frequency
Set 2606 to 16kHz
16kHz provides optimum motor control.
Set Motor boost
values
Set 2110 to 25%
Boost Current Level
Set 2111 to 10%
Boost Frequency
Action
Additional Information
Close Safe Torque
off input connections
1 2 3 4 5 6 7 8 9 10 11 12 13
Safety relay
Drive should now show
Enable Motor
Auto-tune
Set 9910 to a 1 and press the
button.
The display will show . (Test procedure may take several minutes to
complete).
Once the Auto-tune is completed 9910 will return to 0 and the display will
show .
Note: Motor Auto-tune will need to be repeated if the motor, motor cables,
motor parameters or drive control mode is changed in 9903.
12.1.3. Troubleshooting
Observation
Action
Rotor not orientating on start up
Increase 2103 (Current Magnetising time)
Long delay following Rotor orientation on start up
Decrease 2103 (Current Magnetising time)
Poor torque performance at low speed
Increase value in 2110 (Boost current level) and 2111 (Torque boost frequency
limit)
Suitable starting values are 25% (2110) and 10% (2111)
Motor Vibration/trips/Cogging at low speed
Check correct settings of motor nameplate data.
Check correct value of 9905 (Motor Back EMF voltage).
Reduce value of 2301 (Vector Speed Gain)(As much as 50% reduction in some
instances)
Check correct settings of motor nameplate data.
Check correct value of 9905 (Motor Back EMF voltage).
Check Correct setting of 2110 and 2111.
Care should be taken not to apply to high of a value in 2110 and 2111 as excess motor heating may result.
With PMSMs special attention must be paid on setting the motor nominal values correctly in parameter group 99 START-UP DATA. It is important
that the nominal back-emf of the motor is available, further to ensure good performance a MOTOR PARAMETER AUTO-TUNE (9910=1) must be
performed.
The following table lists the basic parameter settings needed for permanent magnet synchronous motors.
12.1.1. PMSM Motor nameplate data entry.
12.1.2. PMSM Motor Auto-tune.
A Motor Auto-tune must be carried out in order to measure the motor electrical characteristics, during the Auto-tune test brakes will be
applied by the drive (unless controlled by other means).
Page 61
62
Fault Code
No.
Description
Corrective Action
00
No Fault
Displayed in Parameter 0401 if no faults are recorded in the log
01
Brake channel over current
Ensure the connected brake resistor is above the minimum permissible level for the drive –
refer to the ratings shown in section 11.2.
Check the brake resistor and wiring for possible short circuits.
02
Brake resistor overload
The drive software has determined that the brake resistor is overloaded, and trips to protect
the resistor. Always ensure the brake resistor is being operated within its designed parameter
before making any parameter or system changes.
To reduce the load on the resistor, increase deceleration the time, reduce the load inertia or
add further brake resistors in parallel, observing the minimum resistance value for the drive
in use.
03
Instantaneous over current on drive
output.
Excess load on the motor.
Fault Occurs on Drive Enable
Check the motor and motor connection cable for phase – phase and phase – earth short
circuits.
Check the load mechanically for a jam, blockage or stalled condition
Ensure the motor nameplate parameters are correctly entered in parameter 9905, 9906, and
9907.
If operating in Vector mode (Parameter 9903– 0 or 1), also check the motor power factor in
parameter 9915 and ensure an autotune has been successfully completed for the connected
motor.
Reduced the Boost voltage setting in parameter 2603
Increase the ramp up time in parameter 2202
If the connected motor has a holding brake, ensure the brake is correctly connected and
controlled, and is releasing correctly
Fault Occurs When Running
If operating in Vector mode (parameter 9903 – 0,1,3), reduce the speed loop gain in
parameter 2301
04
Drive has tripped on overload after
delivering >100% of value in
parameter 9906 for a period of time.
Check to see when the decimal points are flashing (drive in overload) and either increase
acceleration rate or reduce the load.
Check motor cable length is within the limit specified for the relevant drive in section 10.2
Ensure the motor nameplate parameters are correctly entered in parameter 9905, 9906, and
9907.
If operating in Vector mode (Parameter 9903– 0 or 1), also check the motor power factor in
parameter 9915 and ensure an autotune has been successfully completed for the connected
motor.
Check the load mechanically to ensure it is free, and that no jams, blockages or other
mechanical faults exist
05
Hardware Over Current
Check the wiring to motor and the motor for phase to phase and phase to earth short
circuits. Disconnect the motor and motor cable and retest. If the drive trips with no motor
connected, it must be replaced and the system fully checked and retested before a
replacement unit is installed.
06
Over voltage on DC bus
The value of the DC Bus Voltage can be displayed in parameter 0107
A historical log is stored at 256ms intervals prior to a trip in parameter 0191
This fault is generally caused by excessive regenerative energy being transferred from the
load back to the drive. When a high inertia or over hauling type load is connected.
If the fault occurs on stopping or during deceleration, increase the deceleration ramp time
2203 or connect a suitable brake resistor to the drive.
If operating in Vector Mode, reduce the speed loop gain in parameter 2301
07
Under voltage on DC bus
This occurs routinely when power is switched off.
If it occurs during running, check the incoming supply voltage, and all connections into the
drive, fuses, contactors etc.
08
Heatsink over temperature
The heatsink temperature can be displayed in parameter 0110.
A historical log is stored at 30 second intervals prior to a trip in parameter 0193
Check the drive ambient temperature
Ensure the drive internal cooling fan is operating
Ensure that the required space around the drive as shown in sections 0 on page 17 has been
observed, and that the cooling airflow path to and from the drive is not restricted
Reduce the effective switching frequency setting in parameter 2606
Reduce the load on the motor / drive
09
Under temperature
Trip occurs when ambient temperature is less than -10°C. The temperature must be raised
over -10°C in order to start the drive.
10
Factory Default parameters have
been loaded
Press STOP key, the drive is now ready to be configured for the required application
11
External trip
E-trip requested on control input terminals. Some settings of parameter 9902 require a
normally closed contactor to provide an external means of tripping the drive in the event that
an external device develops a fault. If a motor thermistor is connected check if the motor is
too hot.
12
Communications Fault
Communications lost with PC or remote keypad. Check the cables and connections to
external devices
13. Troubleshooting
13.1. Fault messages
Page 62
63
Fault Code
No.
Description
Corrective Action
13
Excessive DC Ripple
The DC Bus Ripple Voltage level can be displayed in parameter 0187
A historical log is stored at 20ms intervals prior to a trip in parameter 0194
Check all three supply phases are present and within the 3% supply voltage level imbalance
tolerance.
Reduce the motor load
If the fault persists, contact your local ABB Drives Sales Partner
14
Input phase loss trip
Drive intended for use with a 3 phase supply, one input phase has been disconnected or lost.
15
Instantaneous over current on drive
output.
Refer to fault 3 above
16
Faulty thermistor on heatsink.
Refer to your ABB Sales Partner.
17
Internal memory fault.
Parameters not saved, defaults reloaded.
Try again. If problem recurs, refer to your ABB Authorised Distributor.
18
4-20mA Signal Lost
The reference signal on Analog Input 1 or 2 (Terminals 6 or 10) has dropped below the
minimum threshold of 3mA. Check the signal source and wiring to the ACS255 terminals.
19
Internal memory fault.
Parameters not saved, defaults reloaded.
Try again. If problem recurs, refer to your ABB Authorised Distributor.
21
Motor PTC Over Temperature
The connected motor PTC device has caused the drive to trip
22
Cooling Fan Fault
Check and if necessary, replace the drive internal cooling fan
23
Ambient Temperature too High
The measured temperature around the drive is above the operating limit of the drive.
Ensure the drive internal cooling fan is operating
Ensure that the required space around the drive as shown in section 4.5 and 4.7 has been
observed, and that the cooling airflow path to and from the drive is not restricted
Increase the cooling airflow to the drive
Reduce the effective switching frequency setting in parameter 2606.
Reduce the load on the motor / drive
24
Maximum Torque Limit Exceeded
The output torque limit has exceeded the drive capacity or trip threshold
Reduce the motor load, or increase the acceleration time
26
Drive output fault
Drive output fault
29
Internal STO circuit Error
Refer to your ABB Sales Partner
40
Autotune Failed
Measured motor stator resistance varies between phases. Ensure the motor is correctly
connected and free from faults. Check the windings for correct resistance and balance.
41
Measured motor stator resistance is too large. Ensure the motor is correctly connected and
free from faults. Check that the power rating corresponds to the power rating of the
connected drive.
42
Measured motor inductance is too low. Ensure the motor is correctly connected and free
from faults.
43
Measured motor inductance is too large. Ensure the motor is correctly connected and free
from faults. Check that the power rating corresponds to the power rating of the connected
drive.
44
Measured motor parameters are not convergent. Ensure the motor is correctly connected
and free from faults. Check that the power rating corresponds to the power rating of the
connected drive.
49
Output (Motor) Phase Loss
One of the motor output phases is not connected to the drive.
50
Modbus comms fault
A valid Modbus telegram has not been received within the watchdog time limit set in
parameter 3018.
Check the network master / PLC is still operating
Check the connection cables
Increase the value of parameter 3019 to a suitable level
51
CAN Open comms trip
A valid CAN open telegram has not been received within the watchdog time limit set in
parameter 3018
Check the network master / PLC is still operating
Check the connection cables
Increase the value of parameter 3018 to a suitable level
53
IO card comms trip
Internal communication to the inserted Option Module has been lost.
Check the module is correctly inserted
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