Emerson SKA1100025 User manual

Getting Started Guide
AC variable speed drive for
3 phase induction motors
from 0.25kW to 7.5kW,
0.33hp to 10hp
Model sizes A, B, C and D
Part Number: 0472-0000-09
Issue: 9
www.controltechniques.com
Commander SK

General Information
The manufacturer accepts no liability for any consequences resulting from inappropriate, negligent or
incorrect installation or adjustment of the optional operating parameters of the equipment or from
mismatching the variable speed drive with the motor.
The contents of this guide are believed to be correct at the time of printing. In the interests of a commitment
to a policy of continuous development and improvement, the manufacturer reserves the right to change the
specification of the product or its performance, or the contents of the guide, without notice.
All rights reserved. No parts of this guide may be reproduced or transmitted in any form or by any means,
electrical or mechanical including photocopying, recording or by an information storage or retrieval system,
without permission in writing from the publisher.
Drive software version
This product is supplied with the latest software version. If this drive is to be connected to an existing system
or machine, all drive software versions should be verified to confirm the same functionality as drives of the
same model already present. This may also apply to drives returned from a Control Techniques Service
Centre or Repair Centre. If there is any doubt please contact the supplier of the product.
The software version of the drive can be checked by looking at Pr 11.29 and Pr 11.34.
This takes the form of xx.yy.zz where Pr 11.29 displays xx.yy and Pr 11.34 displays zz. (e.g. for software
version 01.01.00, Pr 11.29 = 1.01 and Pr 11.34 displays 0).
Environmental statement
Control Techniques is committed to minimising the environmental impacts of its manufacturing operations
and of its products throughout their life cycle. To this end, we operate an Environmental Management
System (EMS) which is certified to the International Standard ISO 14001. Further information on the EMS,
our Environmental Policy and other relevant information is available on request, or can be found at
www.greendrives.com.
The electronic variable-speed drives manufactured by Control Techniques have the potential to save energy
and (through increased machine/process efficiency) reduce raw material consumption and scrap throughout
their long working lifetime. In typical applications, these positive environmental effects far outweigh the
negative impacts of product manufacture and end-of-life disposal.
Nevertheless, when the products eventually reach the end of their useful life, they must not be discarded but
should instead be recycled by a specialist recycler of electronic equipment. Recyclers will find the products
easy to dismantle into their major component parts for efficient recycling. Many parts snap together and can
be separated without the use of tools, whilst other parts are secured with conventional fasteners. Virtually all
parts of the product are suitable for recycling.
Product packaging is of good quality and can be re-used. Large products are packed in wooden crates, while
smaller products come in strong cardboard cartons which themselves have a high recycled fibre content. If
not re-used, these containers can be recycled. Polythene, used on the protective film and bags for wrapping
product, can be recycled in the same way. Control Techniques' packaging strategy prefers easily-recyclable
materials of low environmental impact, and regular reviews identify opportunities for improvement.
When preparing to recycle or dispose of any product or packaging, please observe local legislation and best
practice.
REACH legislation
EC Regulation 1907/2006 on the Registration, Evaluation, Authorisation and restriction of Chemicals
(REACH) requires the supplier of an article to inform the recipient if it contains more than a specified
proportion of any substance which is considered by the European Chemicals Agency (ECHA) to be a
Substance of Very High Concern (SVHC) and is therefore listed by them as a candidate for compulsory
authorization.
For current information on how this requirement applies in relation to specific Control Techniques products,
please approach your usual contact in the first instance. Control Techniques position statement can be
viewed at:
http://www.controltechniques.com/REACH
Copyright © March 2011 Control Techniques Ltd.
Issue Number: 9
Software: 01.08.00

Commander SK Getting Started Guide 3
Issue Number : 9 www.controltechniques.com
Contents
1 Safety information ...............................................................5
1.1 Warnings, Cautions and Notes ................................................................5
1.2 Electrical Safety - general warning ..........................................................5
1.3 System design and safety of personnel ..................................................5
1.4 Environmental Limits ...............................................................................5
1.5 Access .....................................................................................................6
1.6 Fire protection .........................................................................................6
1.7 Compliance and regulations ....................................................................6
1.8 Motor .......................................................................................................6
1.9 Mechanical brake control ........................................................................6
1.10 Adjusting parameters ..............................................................................6
1.11 Electrical installation ................................................................................7
2 Rating data ...........................................................................8
3 Mechanical installation .....................................................10
3.1 Fire protection .......................................................................................10
4 Electrical installation ........................................................14
4.1 Power terminal connections ..................................................................14
4.2 Ground leakage .....................................................................................16
4.3 EMC ......................................................................................................17
4.4 Control terminals I/O specification .........................................................18
5 Keypad and display ..........................................................21
5.1 Programming keys ................................................................................21
5.2 Control keys ..........................................................................................21
5.3 Selecting and changing parameters ......................................................22
5.4 Saving parameters ................................................................................23
5.5 Parameter access .................................................................................23
5.6 Security codes .......................................................................................24
5.7 Setting drive back to default values .......................................................24
6 Parameters .........................................................................25
6.1 Parameter descriptions - Level 1 ...........................................................25
6.2 Parameter descriptions - Level 2 ...........................................................32
6.3 Parameter descriptions - Level 3 ...........................................................42
6.4 Diagnostic parameters ..........................................................................42
7 Quick start commissioning ..............................................43
7.1 Terminal control .....................................................................................43
7.2 Keypad control ......................................................................................45
8 Diagnostics ........................................................................47
9 Options ...............................................................................50
9.1 Documentation ......................................................................................51
10 UL listing information .......................................................52
10.1 UL information (for Commander SK size A, B, C and D) ......................52

4Commander SK Getting Started Guide
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Declaration of Conformity
Control Techniques Ltd
The Gro
Newtown
Powys. UK
SY16 3BE
The AC variable speed drive products listed above have been designed and manufactured in
accordance with the following European harmonised standards:
EN 61000-3-2:2006: Applicable where input current <16A. No limits apply for professional equipment
where input power >1kW.
SKA1200025, SKA1200037, SKA1200055: input choke required
All other units: for professional use only
EN 61000-3-3:2008: Applicable where input current <16A and supply voltage 230/400V
These products comply with the Low Voltage Directive 2006/95/EC and the Electromagnetic
Compatibility (EMC) Directive 2004/108/EC.
These electronic drive products are intended to be used with appropriate motors,
controllers, electrical protection components and other equipment to form complete end
products or systems. Compliance with safety and EMC regulations depends upon installing
and configuring drives correctly, including using the specified input filters. The drives must
be installed only by professional assemblers who are familiar with requirements for safety
and EMC. The assembler is responsible for ensuring that the end product or system
complies with all the relevant laws in the country where it is to be used. Refer to the
Commander SK Getting Started Guide. An EMC Data Sheet is also available giving detailed
EMC information.
SKA1100025 SKA1100037
SKA1200025 SKA1200037 SKA1200055 SKA1200075
SKB1100075 SKB1100110 SKBD200110 SKBD200150
SKB3400037 SKB3400055 SKB3400075 SKB3400110 SKB3400150
SKCD200220 SKC3400220 SKC3400300 SKC3400400
SKDD200300 SKD3200400 SKD3400550 SKD3400750
EN 61800-5-1:2007 Adjustable speed electrical power drive systems - safety requirements -
electrical, thermal and energy
EN 61800-3:2004 Adjustable speed electrical power drive systems. EMC product standard
including specific test methods
EN 61000-6-2:2005 Electromagnetic compatibility (EMC). Generic standards. Immunity
standard for industrial environments
EN 61000-6-4:2007 Electromagnetic compatibility (EMC). Generic standards. Emission
standard for industrial environments
EN 61000-3-2:2006 Electromagnetic compatibility (EMC), Limits, Limits for harmonic current
emissions (equipment input current <16A per phase)
EN 61000-3-3:2008
Electromagnetic compatibility (EMC), Limits, Limitation of voltage
fluctuations and flicker in low-voltage supply systems for equipment with
rated current <16A
T. Alexander
VP Technology
Date: 11th June 2009

Commander SK Getting Started Guide 5
Issue Number: 9 www.controltechniques.com
Safety
information
Rating data Mechanical
installation
Electrical
installation Keypad and display Parameters Quick start
commissioning Diagnostics Options UL listing
information
1 Safety information
1.1 Warnings, Cautions and Notes
1.2 Electrical Safety - general warning
The voltages used in the drive can cause severe electrical shock and/or burns, and
could be lethal. Extreme care is necessary at all times when working with or adjacent to
the drive.
Specific warnings are given at the relevant places in this guide.
1.3 System design and safety of personnel
The drive is intended as a component for professional incorporation into complete
equipment or system. If installed incorrectly, the drive may present a safety hazard.
The drive uses high voltages and currents, carries a high level of stored electrical
energy, and is used to control equipment which can cause injury.
System design, installation, commissioning and maintenance must be carried out by
personnel who have the necessary training and experience. They must read this safety
information and this guide carefully.
The STOP and START controls or electrical inputs of the drive must not be relied
upon to ensure safety of personnel. They do not isolate dangerous voltages from
the output of the drive or from any external option unit. The supply must be
disconnected by an approved electrical isolation device before gaining access to
the electrical connections.
The drive is not intended to be used for safety-related functions.
Careful consideration must be given to the function of the drive which might result in a
hazard, either through its intended behavior or through incorrect operation due to a
fault. In any application where a malfunction of the drive or its control system could lead
to or allow damage, loss or injury, a risk analysis must be carried out, and where
necessary, further measures taken to reduce the risk - for example, an over-speed
protection device in case of failure of the speed control, or a fail-safe mechanical brake
in case of loss of motor braking.
1.4 Environmental Limits
Instructions within the supplied data and information within the Commander SK
Technical Data Guide regarding transport, storage, installation and the use of the drive
must be complied with, including the specified environmental limits. Drives must not be
subjected to excessive physical force.
A Warning contains information, which is essential for avoiding a safety hazard.
WARNING
A Caution contains information, which is necessary for avoiding a risk of damage to the
product or other equipment.
CAUT IO N
A Note contains information, which helps to ensure correct operation of the product.
NOTE

6Commander SK Getting Started Guide
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1.5 Access
Access must be restricted to authorized personnel only. Safety regulations which apply
at the place of use must be complied with.
The IP (Ingress Protection) rating of the drive is installation dependant. For further
information, refer to the Commander SK Technical Data Guide.
1.6 Fire protection
The drive enclosure is not classified as a fire enclosure. A separate fire enclosure must
be provided. See section 3.1 Fire protection on page 10 for more information.
1.7 Compliance and regulations
The installer is responsible for complying with all relevant regulations, such as national
wiring regulations, accident prevention regulations and electromagnetic compatibility
(EMC) regulations. Particular attention must be given to the cross-sectional areas of
conductors, the selection of fuses and other protection, and protective ground (earth)
connections.
The Commander SK Technical Data Guide contains instructions for achieving
compliance with specific EMC standards.
Within the European Union, all machinery in which this product is used must comply
with the following directives:
2006/42/EC: Safety of machinery
2004/108/EC: Electromagnetic compatibility
1.8 Motor
Ensure the motor is installed in accordance with the manufacturer's recommendations.
Ensure the motor shaft is not exposed.
Standard squirrel cage induction motors are designed for single speed operation. If it is
intended to use the capability of a drive to run a motor at speeds above its designed
maximum, it is strongly recommended that the manufacturer is consulted first.
Low speeds may cause the motor to overheat because the cooling fan becomes less
effective. The motor should be installed with a protection thermistor. If necessary, an
electric force vent fan should be used.
The values of the motor parameters set in the drive affect the protection of the motor.
The default values in the drive should not be relied upon.
It is essential that the correct value is entered into parameter 06, motor rated current.
This affects the thermal protection of the motor.
1.9 Mechanical brake control
The brake control functions are provided to allow well co-ordinated operation of an
external brake with the drive. While both hardware and software are designed to high
standards of quality and robustness, they are not intended for use as safety functions,
i.e. where a fault or failure would result in a risk of injury. In any application where the
incorrect operation of the brake release mechanism could result in injury, independent
protection devices of proven integrity must also be incorporated.
1.10 Adjusting parameters
Some parameters have a profound effect on the operation of the drive. They must not
be altered without careful consideration of the impact on the controlled system.
Measures must be taken to prevent unwanted changes due to error or tampering.

Commander SK Getting Started Guide 7
Issue Number: 9 www.controltechniques.com
Safety
information
Rating data Mechanical
installation
Electrical
installation Keypad and display Parameters Quick start
commissioning Diagnostics Options UL listing
information
1.11 Electrical installation
1.11.1 Electric shock risk
The voltages present in the following locations can cause severe electric shock and may
be lethal:
• AC supply cables and connections
• DC bus, dynamic brake cables and connections
• Output cables and connections
• Many internal parts of the drive, and external option units
Unless otherwise indicated, control terminals are single insulated and must not be
touched.
1.11.2 Isolation device
The AC supply must be disconnected from the drive using an approved isolation device
before any cover is removed from the drive or before any servicing work is performed.
1.11.3 STOP function
The STOP function does not remove dangerous voltages from the drive, the motor or
any external option units.
1.11.4 Stored charge
The drive contains capacitors that remain charged to a potentially lethal voltage after the
AC supply has been disconnected. If the drive has been energized, the AC supply must
be isolated at least ten minutes before work may continue.
Normally, the capacitors are discharged by an internal resistor. Under certain, unusual
fault conditions, it is possible that the capacitors may fail to discharge, or be prevented
from being discharged by a voltage applied to the output terminals. If the drive has failed
in a manner that causes the display to go blank immediately, it is possible the capacitors
will not be discharged. In this case, consult Control Techniques or their authorized
distributor.
1.11.5 Equipment supplied by plug and socket
Special attention must be given if the drive is installed in equipment which is connected
to the AC supply by a plug and socket. The AC supply terminals of the drive are
connected to the internal capacitors through rectifier diodes which are not intended to
give safety isolation. If the plug terminals can be touched when the plug is disconnected
from the socket, a means of automatically isolating the plug from the drive must be used
(e.g. a latching relay).
1.11.6 Ground leakage current
The drive is supplied with an internal EMC filter capacitor installed. If the input voltage to
the drive is supplied through an ELCB or RCD, these may trip due to the ground
leakage current. See section 4.3.1 Internal EMC filter on page 17 for further information
and how to disconnect the internal EMC capacitor.

8Commander SK Getting Started Guide
www.controltechniques.com Issue Number: 9
2Ratingdata
Figure 2-1 Model code explanation
Table 2-1 Commander SK, 1 phase, 100 to 120Vac ±10%, 48 to 62Hz units
*No dynamic braking available with Commander SK size A 110V drive.
Table 2-2 Commander SK, 1 phase, 200 to 240Vac ±10%, 48 to 62Hz units
Table 2-3 Commander SK, 1 and 3 phase, 200 to 240Vac ±10%, 48 to 62Hz units
SK A 1 2 XXXXX
Drive kilowatt rating: 00025 = 0.25kW
Drive voltage rating: 1 = 110V, 2 = 230V, 4 = 400V
Number of input phases: 1 = 1phase, 3 = 3phase, D = 1 and 3phase
Frame size
Model: Commander SK
Model
Number
Nominal motor
power
Input fuse
rating
Typical full
load input
current
100% RMS
output current
A
150% overload
current for 60s
A
Minimum
braking
resistor value
kW hp A A Heavy Duty Ω
SKA1100025 0.25 0.33 10 7.5 1.7 2.55 N/A*
SKA1100037 0.37 0.5 15 11 2.2 3.3
SKB1100075 0.75 1.0 25 19.6 4.0 6.0 28
SKB1100110 1.1 1.5 32 24.0 5.2 7.8
Model
Number
Nominal motor
power
Input fuse
rating
Typical full
load input
current
100% RMS
output current
A
150% overload
current for 60s
A
Minimum
braking
resistor value
kW hp A A Heavy Duty Ω
SKA1200025 0.25 0.33 6 4.3 1.7 2.55
68
SKA1200037 0.37 0.5 10 5.8 2.2 3.3
SKA1200055 0.55 0.75 10 8.1 3.0 4.5
SKA1200075 0.75 1.0 16 10.5 4.0 6.0
Model
Number
Nominal
motor power
Input fuse
rating
A
Typical full
load input
current
A
Maximum
continuous
input current
A
100% RMS
output
current
A
150% overload
current for 60s
A
Minimum
braking
resistor
value
Ω
kW hp 1ph 3ph 1ph 3ph 1ph 3ph Heavy Duty
SKBD200110 1.1 1.5 16 10 14.2 6.7 9.2 5.2 7.8 28
SKBD200150 1.5 2.0 20 16 17.4 8.7 12.6 7.0 10.5 28
SKCD200220 2.2 3.0 25 20 23.2 11.9 17.0 9.6 14.4 28
SKDD200300 3.0 3.0 25 16 23.6 12.5 16.6 12.6 18.9 20
SKD3200400 4.0 5.0 20 15.7 19.5 17.0 25.5 20

Commander SK Getting Started Guide 9
Issue Number: 9 www.controltechniques.com
Safety information
Rating data
Mechanical
installation
Electrical
installation Keypad and display Parameters Quick start
commissioning Diagnostics Options UL listing
information
Table 2-4 Commander SK, 3 phase, 380 to 480Vac ±10%, 48 to 62Hz units
Output frequency
0 to 1500Hz
Output voltage
110V drives:
3 phase, 0 to 240Vac (240 Vac maximum set by Pr 08).
200V and 400V drives:
3 phase, 0 to drive rating (240 or 480Vac maximum set by Pr 08).
Model
Number
Nominal
motor power
Input
fuse
rating
Typical full
load input
current
Maximum
continuous
input current
100% RMS
output
current
A
150% overload
current for 60s
A
Minimum
braking
resistor value
kW hp A A A Heavy Duty Ω
SKB3400037 0.37 0.5 6 1.7 2.5 1.3 1.95 100
SKB3400055 0.55 0.75 6 2.5 3.1 1.7 2.55 100
SKB3400075 0.75 1.0 6 3.1 3.75 2.1 3.15 100
SKB3400110 1.1 1.5 6 4.0 4.6 2.8 4.2 100
SKB3400150 1.5 2.0 10 5.2 5.9 3.8 5.7 100
SKC3400220 2.2 3.0 16 7.3 9.6 5.1 7.65 100
SKC3400300 3.0 3.0 16 9.5 11.2 7.2 10.8 55
SKC3400400 4.0 5.0 16 11.9 13.4 9.0 13.5 55
SKD3400550 5.5 7.5 16 12.4 14.3 13.0 19.5 53
SKD3400750 7.5 10.0 20 15.6 16.9 16.5 24.75 53
110V drives contain a voltage doubler circuit on the AC input.
NOTE
The output voltage can be increased by 20% during deceleration. See Pr 30 on page 35.
NOTE
The output frequency can be increased by 20% during deceleration. See Pr 30 on page
35.
NOTE
The maximum continuous current inputs are used to calculate input cable and fuse
sizing. Where no maximum continuous input currents are indicated, use the typical full
load input current values. See Commander SK Technical Data Guide for cable and fuse
data.
NOTE

10 Commander SK Getting Started Guide
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3 Mechanical installation
3.1 Fire protection
The drive enclosure is not classified as a fire enclosure. A separate fire enclosure must
be provided.
For installation in the USA, a NEMA 12 enclosure is suitable.
For installation outside the USA, the following (based on IEC 62109-1, standard for PV
inverters) is recommended.
Enclosure can be metal and/or polymeric, polymer must meet requirements which can
be summarized for larger enclosures as using materials meeting at least UL 94 class
5VB at the point of minimum thickness.
Air filter assemblies to be at least class V-2.
The location and size of the bottom shall cover the area shown in Figure 3-1. Any part of
the side which is within the area traced out by the 5° angle is also considered to be part
of the bottom of the fire enclosure.
Figure 3-1 Fire enclosure bottom layout
The bottom, including the part of the side considered to be part of the bottom, must be
designed to prevent escape of burning material - either by having no openings or by
having a baffle construction. This means that openings for cables etc. must be sealed
with materials meeting the 5VB requirement, or else have a baffle above. See Figure 3-
2 for acceptable baffle construction. This does not apply for mounting in an enclosed
electrical operating area (restricted access) with concrete floor.
Enclosure
The drive is intended to be mounted in an enclosure which prevents access except by
trained and authorized personnel, and which prevents the ingress of contamination. It is
designed for use in an environment classified as pollution degree 2 in accordance with
IEC 60664-1. This means that only dry, non-conducting contamination is acceptable.
WARNING
Drive
5
o
5
o

Commander SK Getting Started Guide 11
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Mechanical
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Electrical
installation Keypad and display Parameters Quick start
commissioning Diagnostics Options UL listing
information
Figure 3-2 Fire enclosure baffle construction
The drive complies with the requirements of IP20 as standard.
Figure 3-3 Commander SK dimensions
Mounting holes: 4 x M4 holes (size A to C), 4 x M5 holes (size D)
Table 3-1 Commander SK dimensions
*Size C and D are not DIN rail mountable.
The DIN rail used should conform to DIN46277-3.
Not less
th a n 2 X B a ffle p la te s (m a y b e
above or below bottom
of enclosure)
X
Bottom of fire
enclosure
Not less
than 2
times ‘X’ Baffle plates (may be above or
below bottom of enclosure)
Bottom of fire enclosure
X
ABI
G
D
C
H
E
E
F
G
D
C
Drive
size
ABCDEFGH*I
mm in mm in mm in mm in mm in mm in mm in mm in mm in
A 140 5.51 154 6.06 11 0.43 64 2.52 75 2.95 145 5.71 104 4.09 143 5.63
B 190 7.48 205 8.07 10.9 0.43 65.9 2.6 85 3.35 77 3.0 156 6.15 155.5 6.12 194 7.64
C 240 9.45 258 10.16 10.4 0.41 81.1 3.2 100 3.94 91.9 3.62 173 6.81 244 9.61
D 300 11.81 335 13.19 14.5 0.57 100.5 3.96 115 4.53 198 7.80 315 12.4
If DIN rail mounting is used in an installation where the drive is to be subjected to shock
or vibration, it is recommended that the bottom mounting screws are used to secure the
drive to the back plate.
If the installation is going to be subjected to heavy shock and vibration, then it is
recommended that the drive is surface mounted rather than DIN rail mounted.
NOTE
The DIN rail mounting mechanism has been designed so no tools are required to install
and remove the drive from a DIN rail. Please ensure the top mounting lugs are located
correctly on the DIN rail before installation is initiated.
NOTE

12 Commander SK Getting Started Guide
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Figure 3-4 Minimum mounting clearances
*This is the minimum spacing between drives at the base of the drive where it is
mounted against a back plate.
Table 3-2 Tightening torque for mounting feet
Drive size ABC
mm in mm in mm in
A
10 0.39
00
100 3.94
B (≤0.75kW) 10* 0.39*
B (≥1.1kW) or B (110V) 0 0
C 50* 1.97*
D00
Drive size Tightening torque
A to C 1.3 to 1.6 Nm
D 2.5 to 2.8 Nm
A
A
BC
C

Commander SK Getting Started Guide 13
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Safety information Rating data
Mechanical
installation
Electrical
installation Keypad and display Parameters Quick start
commissioning Diagnostics Options UL listing
information
Figure 3-5 Features of the drive (size B illustrated)
Display
Smart / Logic
Stick slot
Power
terminals
Control
terminals
Serial
communications
port connector
EMC filter tab
Solutions Module
connector
protective cover
(size B
and C only)
Solutions Module
slot (size B, C
and D only)

14 Commander SK Getting Started Guide
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4 Electrical installation
4.1 Power terminal connections
Figure 4-1 Size A power terminal connections
Figure 4-2 Sizes B, C and D power terminal connections
*For further information, see section 4.3.1 Internal EMC filter on page 17.
Optional
ground
connection
+
L1 L2/N U V W PE
Supply
ground
Optional
line reactor
Braking
resistor
Mains supply
Optional
Thermal
protection
device
Stop
Start/
Reset
PE
Supply
ground
Internal
EMC filter
*
Optional
EMC filter
-DC
Optional ground
connection
Supply
ground
Optional
EMC filter
Optional
line reactor
Fuses
Mains supply
L3/N U V W
+
PE PE
L1 L2
_
L3/N U V WL1 L2
+
PE PE
_
Supply
ground
Internal
EMC filter
*
Start/
Reset
Braking
resistor
Optional
Thermal
protection
device
Stop
On the Commander SKB 110V drives, the supply should be connected to L1 and L3/N.
NOTE
On the Commander SK size D, the internal EMC filter is connected to the -DC Bus.
NOTE

Commander SK Getting Started Guide 15
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Safety information Rating data Mechanical
installation
Electrical
installation
Keypad and display Parameters Quick start
commissioning Diagnostics Options UL listing
information
4.1.1 Starts per hour
Electric starts
With the supply permanently connected the number of electronic motor starts per hour
is only limited by motor and drive thermal limits.
Power starts
The number of starts by connection of the AC supply is limited. The start up circuit will
allow for three consecutive starts at 3 second intervals on initial power up. Exceeding
the rated number of starts per hour, presented in the table below, could result in damage
to the start up circuit.
The braking terminals are not available on the size A 110V drive.
NOTE
On the Commander SKB 110V drives, the -DC bus (-) terminal has no internal
connection.
NOTE
Fuses/MCB
The AC supply to the drive must be installed with suitable protection against overload
and short circuits. Failure to observe this requirement will cause risk of fire.
See the Commander SK Technical Data Guide for fuse data.
WARNING
The drive must be grounded by a conductor sufficient to carry the prospective fault
current in the event of a fault. See also the warning in section 4.2 Ground leakage
relating to ground leakage current.
WARNING
To avoid a fire hazard and maintain validity of the UL listing, adhere to the specified
tightening torques for the power and ground terminals. Refer to the table below.
WARNING
Frame size Maximum power terminal screw torque
A 0.5 N m / 4.4 lb in
B, C and D 1.4 N m / 12.1 lb in
Frame size Maximum AC line starts per hour evenly spaced
in time
A to D 20
Braking resistor: High temperatures and overload protection
Braking resistors can reach high temperatures. Locate braking resistors so that damage
cannot result. Use cable having insulation capable of withstanding the high temperatures.
It is essential that the braking resistor be protected against overload caused by a failure
of the brake control. Unless the resistor has in-built protection, a circuit like those shown
in
Figure 4-1 and Figure 4-2 should be used, where the thermal protection device
disconnects the AC supply to the drive. Do not use AC relay contacts directly in series
with the braking resistor circuit, because it carries DC.
WARNING
When connecting single phase to a dual rated 200V unit, use terminals L1 and L3.
NOTE
For control terminal connections, see Pr 05 on page 26.
NOTE
For information on the internal EMC filter, see section 4.3.1 Internal EMC filter .
NOTE

16 Commander SK Getting Started Guide
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4.2 Ground leakage
The ground leakage current depends upon the internal EMC filter being installed. The
drive is supplied with the filter installed. Instructions for removal of the internal EMC filter
are given in section 4.3.2 Removing the internal EMC filter .
With internal EMC filter installed
30 μ A DC (10M Ω internal bleed resistor, relevant where DC leakage current is being measured)
Size A
1 phase 110V drives
4mA AC maximum at 110V, 50Hz (proportional to supply voltage and frequency)
1 phase 200V drives
10mA AC maximum at 230V, 50Hz (proportional to supply voltage and
frequency)
Size B
1 phase 110V drives
10mA AC maximum at 110V, 50Hz (proportional to supply voltage and
frequency)
Size B and C
1 phase 200V drives
20mA AC maximum at 230V, 50Hz (proportional to supply voltage and
frequency)
3 phase 200V drives
8mA AC maximum at 230V, 50Hz (proportional to supply voltage and
frequency)
3 phase 400V drives
8.2mA AC maximum at 415V, 50Hz (proportional to supply voltage and
frequency)
Size D
1 phase 200V drives
20.5mA AC maximum at 230V, 50Hz (proportional to supply voltage and
frequency)
3 phase 200V drives
8mA AC maximum at 230V, 50Hz (proportional to supply voltage and
frequency)
3 phase 400V drives
10.5mA AC maximum at 415V, 50Hz (proportional to supply voltage and
frequency)
With internal EMC filter removed
<1mA
The above leakage currents are just the leakage currents of the drive with the internal EMC
filter connected and do not take into account any leakage currents of the motor or motor cable.
NOTE
In both cases, there is an internal voltage surge suppression device connected to
ground. Under normal circumstances, this carries negligible current.
NOTE
When the internal EMC filter is installed, the leakage current is high. In this case, a
permanent fixed ground connection must be provided using two independent conductors
each with a cross-section equal to or exceeding that of the supply conductors. The drive
is provided with two ground terminals to facilitate this. The purpose is to prevent a safety
hazard occurring if a connection is lost. Both ground connections are required to meet
the required european standard.
WARNING

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Safety information Rating data Mechanical
installation
Electrical
installation
Keypad and display Parameters Quick start
commissioning Diagnostics Options UL listing
information
4.2.1 Use of earth (ground) leakage circuit breakers (ELCB) / residual current
device (RCD)
There are three common types of ELCB/RCD:
Type AC - detects AC fault currents
Type A - detects AC and pulsating DC fault currents (provided the DC current
reaches zero at least once every half cycle)
Type B - detects AC, pulsating DC and smooth DC fault currents
• Type AC should never be used with drives
• Type A can only be used with single phase drives
• Type B must be used with three phase drives
4.3 EMC
4.3.1 Internal EMC filter
It is recommended that the internal EMC filter is kept in place unless there is a specific
reason for removing it.
If the drive is to be used on an IT supply, then the filter must be removed.
The internal EMC filter reduces radio-frequency emissions into the mains supply. Where
the motor cable is short, it permits the requirements of EN 61800-3:2004 to be met for
the second environment.
For longer motor cables, the filter continues to provide a useful reduction in emission
level, and when used with any length of shielded cable up to the limit for the drive, it is
unlikely that nearby industrial equipment will be disturbed. It is recommended that the
filter be used in all applications unless the ground leakage current is unacceptable or
the above conditions are true.
When the internal EMC filter is used on the Commander SK size D, the motor cables (U,
V and W) need to be fed twice through a ferrite ring (provided with the drive), so that the
drive meets the requirements of operating in the second environment.
4.3.2 Removing the internal EMC filter
Figure 4-3 Removal and re-fitting of internal EMC filter
Internal
EMC filter
Tab fully inserted:
EMC filter fitted
Internal
EMC filter
B
Tab fully extended:
EMC filter disconnected
A

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4.3.3 Further EMC precautions
Further EMC precautions are required if more stringent EMC emission requirements
apply:
• Operation in the first environment of EN 61800-3:2004
• Conformity to the generic emission standards
• Equipment which is sensitive to electrical interference operating nearby
In this case it is necessary to use:
• The optional external EMC filter
• A shielded motor cable, with shield clamped to the grounded metal panel
• A shielded control cable, with shield clamped to the grounded metal panel
Full instructions are given in the Commander SK Technical Data Guide.
A full range of external EMC filters is also available for use with Commander SK.
4.4 Control terminals I/O specification
The control circuits are isolated from the power circuits in the drive by basic insulation
(single insulation) only. The installer must ensure that the external control circuits are
insulated from human contact by at least one layer of insulation (supplementary
insulation) rated for use at the AC supply voltage.
WARNING
If the control circuits are to be connected to other circuits classified as Safety Extra Low
Voltage (SELV) (e.g. to personal computer), an additional isolating barrier must be
included in order to maintain the SELV classification.
WARNING
The above warnings also apply to the PCB edge connector for the optional Solutions
Modules. To allow a Solutions Module to be installed with a Commander SK, a protective
cover must be removed to allow access to the PCB edge connector. See Figure 3-5 on
page 13. This protective cover provides protection from direct contact of the PCB edge
connector by the user. When this cover is removed and a Solutions Module installed, the
Solutions Module provides the protection from direct contact by the user. If the Solutions
Module is then removed, this PCB edge connector becomes exposed. The user is required
to provide protection in this case, to protect against direct contact of this PCB edge
connector.
WARNING
See Pr 05 on page 26 (Drive configuration) for terminal connection / set-up diagrams and
details.
NOTE
The digital inputs are positive logic only.
NOTE
The analog inputs are unipolar. For information on a bipolar input, see the Commander
SK Advanced User Guide.
NOTE

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Safety information Rating data Mechanical
installation
Electrical
installation
Keypad and display Parameters Quick start
commissioning Diagnostics Options UL listing
information
0-20: Current input 0 to 20mA (20mA full scale)
20-0: Current input 20 to 0mA (0mA full scale)
4-20: Current input 4 to 20mA with current loop loss (cL1) trip (20mA full scale)
20-4: Current input 20 to 4mA with current loop loss (cL1) trip (4mA full scale)
4-.20:Current input 4 to 20mA with no current loop loss (cL1) trip (20mA full scale)
20-.4:Current input 20 to 4mA with no current loop loss (cL1) trip (4mA full scale)
VoLt: 0 to 10V input
T1 0V common
T2 Analog input 1 (A1), either voltage or current (see Pr 16)
Voltage: Current input 0 to 10V / mA as parameter range
Parameter range 4-20, 20-4, 0-20, 20-0, 4-.20, 20-.4, VoLt
Scaling Input range automatically scaled to Pr 01 Minimum set
speed / Pr 02 Maximum set speed
Input impedance 200Ω (current) / 100kΩ(voltage)
Resolution 0.1%
T3 +10V reference output
Maximum output current 5mA
T4 Analog input 2 (A2), either voltage or digital input
Voltage: Digital input 0 to +10V / 0 to +24V
Scaling (as voltage input) Input range automatically scaled to Pr 01 Minimum set
speed / Pr 02 Maximum set speed
Resolution 0.1%
Input impedance 100kΩ (voltage) / 6k8 (digital input)
Normal threshold voltage (as digital input) +10V (positive logic only)
T5 Status relay - Drive ok (Normally open)
T6
Contact voltage rating 240Vac
30Vdc
Contact maximum current rating
2Aac 240V
4Adc 30V resistive load (2A 35Vdc for UL
requirements).
0.3Adc 30V inductive load (L/R=40ms)
Contact minimum recommended rating 12V 100mA
Contact isolation 1.5kVac (over voltage category II)
Operation of contact (drive ok - default
condition)
OPEN
AC supply removed from drive
AC supply applied to drive with drive in tripped condition
CLOSED
AC supply applied to drive with drive in a 'ready to run' or
'running' condition (not tripped)
Provide fuse or other over-current protection in status relay circuit.
WARNING

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Terminal B7 can also be configured as a thermistor input or frequency input. Refer to the
Commander SK Advanced User Guide for more information
If the enable terminal is opened, the drive’s output is disabled and the motor will coast to
a stop. The drive will not re-enable for 1.0s after the enable terminal is closed again.
* Following a drive trip, opening and closing the enable terminal will reset the drive. If
the run forward or run reverse terminal is closed, the drive will run straight away.
** Following a drive trip and a reset via the stop/reset key, the enable, run forward or run
reverse terminals will need to be opened and closed to allow the drive to run. This
ensures that the drive does not run when the stop/reset key is pressed.
The enable, run forward and run reverse terminals are level triggered apart from after a
trip where they become edge triggered. See * and ** above.
If the enable and run forward or enable and run reverse terminals are closed when the
drive is powered up, the drive will run straight away up to a set speed.
If both the run forward and run reverse terminals are closed, the drive will stop under the
control of the ramp and stopping modes set in Pr 30 and Pr 31.
A flyback diode should be installed across inductive loads connected to the status
relay.
WARNING
B1 Analog voltage output - Motor speed
Voltage output 0 to +10V
Scaling 0V represents 0Hz/rpm output
+10V represents the value in Pr 02 Maximum set speed
Maximum output current 5mA
Resolution 0.1%
B2 +24V output
Maximum output current 100mA
B3 Digital output - Zero speed (or digital input)
Voltage range 0 to +24V
Maximum output current 50mA at +24V (current source)
The total available current from the digital output plus the +24V output is 100mA.
Terminal B3 can also be configured as a digital input, frequency output or PWM output.
Refer to the Commander SK Advanced User Guide for more information.
NOTE
B4 Digital Input - Enable/Reset*/**
B5 Digital Input - Run Forward**
B6 Digital Input - Run Reverse**
B7 Digital Input - Local/Remote speed reference select (A1/A2)
Logic Positive logic only
Voltage range 0 to +24V
Nominal threshold voltage +10V