Rockwell Automation 9VT201-007HTNNN User manual

VTAC 9 AC Drive
Firmware Version 3.xx
User Manual

Important User Information
Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application, Installation
and Maintenance of Solid State Controls (Publication SGI-1.1 available from your
local Rockwell Automation sales office or online at http://
www.rockwellautomation.com/vtac/) describes some important differences between
solid state equipment and hard-wired electromechanical devices. Because of this
difference, and also because of the wide variety of uses for solid state equipment,
all persons responsible for applying this equipment must satisfy themselves that
each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or
consequential damages resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative
purposes. Because of the many variables and requirements associated with any
particular installation, Rockwell Automation, Inc. cannot assume responsibility or
liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of
information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written
permission of Rockwell Automation, Inc. is prohibited.
Throughout this manual, when necessary we use notes to make you aware of safety
considerations.
Important: Identifies information that is critical for successful application and
understanding of the product.
VTAC 9 and VS Utilities are registered trademarks of Rockwell Automation, Inc.
WARNING: Identifies information about practices or circumstances
that can cause an explosion in a hazardous environment, which may
lead to personal injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances
that can lead to personal injury or death, property damage, or economic
loss. Attentions help you:
•identify a hazard
•avoid the hazard
•recognize the consequences
Shock Hazard labels may be located on or inside the equipment (e.g.,
drive or motor) to alert people that dangerous voltage may be present.
Burn Hazard labels may be located on or inside the equipment (e.g.,
drive or motor) to alert people that surfaces may be at dangerous
temperatures.

Summary of Changes
The information below summarizes the changes to the VTAC 9 User
Manual since the June 2007 release.
Manual Updates
Description of New or Updated Information Page
Additional documentation needed when installing Bypass Package
(Style B) Drives.
1-1, 1-23, 1-30
Suggested Analog Signal Wiring section added. 1-23, 1-30
Interlock Connection Considerations added. 1-24, 1-31
Important statement regarding the two types of I/O Terminal Blocks
added.
1-25, 1-32
Parameter 178 [Sleep Wake Mode] description updated. 3-38
Sleep Wake Mode definitions updated. C-11

soc-2

Publication 9VT-UM001D-EN-P
Table of Contents
Preface Overview
Who Should Use this Manual? . . . . . . . . . P-1
What Is Not in this Manual . . . . . . . . . . . . P-1
Getting Assistance from
Rockwell Automation . . . . . . . . . . . . . . P-1
Manual Conventions . . . . . . . . . . . . . . . . . P-2
General Precautions . . . . . . . . . . . . . . . . . P-3
VTAC 9 Catalog Numbers . . . . . . . . . . . . P-4
System (VTAC Builder/Order)
Catalog Number Explanation . . . . . . . . P-4
Model Number Explanation . . . . . . . . . . . P-5
Chapter 1 Installation/Wiring
Bypass Package (Style B) Drives . . . . . . . 1-1
Opening the Cover . . . . . . . . . . . . . . . . . . 1-2
Mounting Considerations . . . . . . . . . . . . . 1-4
AC Supply Source Considerations . . . . . . 1-5
General Grounding Requirements . . . . . . 1-6
Fuses and Circuit Breakers . . . . . . . . . . . . 1-7
Power Wiring . . . . . . . . . . . . . . . . . . . . . . 1-7
Using Input/Output Contactors . . . . . . . . 1-16
Disconnecting MOVs and
Common Mode Capacitors . . . . . . . . . 1-18
I/O Wiring . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Speed Reference Control . . . . . . . . . . . . 1-35
Auto/Manual Examples. . . . . . . . . . . . . . 1-36
EMC Instructions . . . . . . . . . . . . . . . . . . 1-37
FCC Instructions . . . . . . . . . . . . . . . . . . . 1-40
Chapter 2 Start Up
Prepare For Drive Start-Up . . . . . . . . . . . . 2-2
Status Indicators . . . . . . . . . . . . . . . . . . . . 2-3
Running the Start-Up Routines. . . . . . . . . 2-4
Chapter 3 Programming and Parameters
About Parameters . . . . . . . . . . . . . . . . . . . 3-1
How Parameters are Organized. . . . . . . . . 3-3
Accessing the Parameters . . . . . . . . . . . . . 3-4
Ensuring Program Security . . . . . . . . . . . . 3-6
Monitor File . . . . . . . . . . . . . . . . . . . . . . 3-11
Motor Control File . . . . . . . . . . . . . . . . . 3-12
Speed Command File . . . . . . . . . . . . . . . 3-18
Dynamic Control File . . . . . . . . . . . . . . . 3-30
Utility File . . . . . . . . . . . . . . . . . . . . . . . . 3-41
Communication File . . . . . . . . . . . . . . . . 3-51
Inputs & Outputs File . . . . . . . . . . . . . . . 3-54
Parameter Cross Reference – by Name. . 3-66

ii
Publication 9VT-UM001D-EN-P
Chapter 4 Troubleshooting
Drive Faults . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Manually Clearing Faults . . . . . . . . . . . . . 4-4
Fault Descriptions . . . . . . . . . . . . . . . . . . . 4-4
Drive Alarms . . . . . . . . . . . . . . . . . . . . . . . 4-8
Clearing Alarms. . . . . . . . . . . . . . . . . . . . . 4-9
Alarm Descriptions . . . . . . . . . . . . . . . . . 4-10
Diagnostic Parameters. . . . . . . . . . . . . . . 4-12
Common Symptoms and
Corrective Actions . . . . . . . . . . . . . . . . 4-13
Troubleshooting Using the LCD OIM. . . 4-16
Appendix A Supplemental Drive Information
Specifications. . . . . . . . . . . . . . . . . . . . . . . A-1
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . A-8
Drive, Fuse & Circuit Breaker Ratings . . A-21
Appendix B Using the LCD OIM
External and Internal Connections . . . . . . B-1
Install/Remove the Local LCD OIM . . . . . B-5
Display Description. . . . . . . . . . . . . . . . . . B-6
LCD OIM Menu Structure . . . . . . . . . . . . B-8
Power Up and Adjust the LCD OIM . . . . . B-9
Select a Device in the System . . . . . . . . . . B-9
Program the Drive . . . . . . . . . . . . . . . . . . B-10
Monitor the Drive Using the
Process Display Screen . . . . . . . . . . . . B-12
Control the Drive From the LCD OIM . . B-18
Appendix C Application Notes
External Brake Resistor. . . . . . . . . . . . . . . C-1
Motor Overload . . . . . . . . . . . . . . . . . . . . . C-2
Motor Overload Memory Retention
Per 2005 NEC . . . . . . . . . . . . . . . . . . . . C-3
Overspeed . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Power Loss Ride Through . . . . . . . . . . . . . C-5
Process PI . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Skip Frequency . . . . . . . . . . . . . . . . . . . . . C-9
Sleep Wake Mode . . . . . . . . . . . . . . . . . . C-11
Start At PowerUp. . . . . . . . . . . . . . . . . . . C-13
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . C-14
Index

Publication 9VT-UM001D-EN-P
Preface
Overview
The purpose of this manual is to provide you with the basic information
needed to install, start-up and troubleshoot the VTAC 9 Adjustable
Frequency AC Drive Packages.
This manual is intended for qualified personnel. You must be able to
program and operate Adjustable Frequency AC Drive devices. In
addition, you must have an understanding of the parameter settings and
functions.
The VTAC 9 User Manual is designed to provide basic start-up and drive
operation information. For detailed installation information, please refer
to the VTAC 9 Installation Instructions, publication 9VT-IN001.
Manuals are available online at http://www.rockwellautomation.com/vtac/.
If you have any questions or problems with the products described in this
instruction manual, contact your authorized Rockwell Automation
VTAC drive representative.
For technical assistance, call 1-440-646-7271.
Before calling, please review the troubleshooting section of this manual
and for additional information visit VTAC Drives online at
http://www.rockwellautomation.com/vtac/.
When you call this number, you will be asked for the drive model
number and this instruction manual number.
For information on… See page…
Who Should Use this Manual? P-1
What Is Not in this Manual P-1
Manual Conventions P-2
General Precautions P-3
VTAC 9 Catalog Numbers P-4
Who Should Use this Manual?
What Is Not in this Manual
Getting Assistance from Rockwell Automation

P-2 Overview
Publication 9VT-UM001D-EN-P
•In this manual we refer to the VTAC 9 Adjustable Frequency AC
Drive as; drive, VTAC 9 or VTAC 9 Drive.
•To help differentiate parameter names and LCD display text from
other text, the following conventions will be used:
–Parameter Names will appear in [brackets].
For example: [DC Bus Voltage].
–Display Text will appear in “quotes.” For example: “Enabled.”
•The following words are used throughout the manual to describe an
action:
Manual Conventions
Word Meaning
Can Possible, able to do something
Cannot Not possible, not able to do something
May Permitted, allowed
Must Unavoidable, you must do this
Shall Required and necessary
Should Recommended
Should Not Not recommended

Overview P-3
Publication 9VT-UM001D-EN-P
General Precautions
!
ATTENTION: This drive contains ESD (Electrostatic Discharge)
sensitive parts and assemblies. Static control precautions are required
when installing, testing, servicing or repairing this assembly.
Component damage may result if ESD control procedures are not
followed. If you are not familiar with static control procedures,
reference A-B publication 8000-4.5.2, “Guarding Against Electrostatic
Damage” or any other applicable ESD protection handbook.
!
ATTENTION: An incorrectly applied or installed drive can result in
component damage or a reduction in product life. Wiring or application
errors, such as, undersizing the motor, incorrect or inadequate AC
supply, or excessive ambient temperatures may result in malfunction of
the system.
!
ATTENTION: Only qualified personnel familiar with adjustable
frequency AC drives and associated machinery should plan or
implement the installation, start-up and subsequent maintenance of the
system. Failure to comply may result in personal injury and/or
equipment damage.
!
ATTENTION: To avoid an electric shock hazard, verify that the
voltage on the bus capacitors has discharged before performing any
work on the drive. Measure the DC bus voltage at the +DC terminal of
the Power Terminal Block and the -DC test point (refer to Chapter 1 for
locations). The voltage must be zero.

P-4 Overview
Publication 9VT-UM001D-EN-P
Each VTAC 9 drive can be identified by its catalog number. There are
two distinct catalog numbers associated with each rating: the System
(VTAC Builder/Order) Catalog Number and the Model Number.
System (VTAC Builder/Order) Catalog Number
Explanation
The System (VTAC Builder/Order) Catalog Number is used for ordering
and may appear on shipping or order documentation.
VTAC 9 Catalog Numbers
Position
9VT –5041H0N–D00
a bcde f g h i j
a
Drive
Code Type
9VT VTAC 9
g
Control and I/O
Code Control I/O Drive
Frame
N Standard 24V B, C, D, E
A Standard 24V 2, 3, 4, 5, 6
h
Option Enclosure
Code Option
D Drive Only
i
Input Power
Code Option
0 None
j
Reactor
Code Type
0 None
b1
Horsepower Rating
208V, 60 Hz Input
Code Hp Drive Frame
22B
33B
55C
7 7.5 D
10 10 D
15 15 D
20 20 E
25 25 E
30 30 4
40 40 5
50 50 5
60 60 6
75 75 6
100 100 6
b2
Horsepower Rating
480V, 60 Hz Input
Code Hp Drive Frame
33B
55B
7 7.5 C
10 10 C
15 15 D
20 20 D
25 25 D, 2
30 30 D, 3
40 40 E, 3
50 50 E, 3
60 60 4
75 75 5
100 100 5
125 125 6
150 150 6
200 200 6
b3
Horsepower Rating
650V dc Input
Code Hp Drive Frame
75 75 5
100 100 5
125 125 6
150 150 6
200 200 6
c
Voltage Rating
Code Voltage Phase Precharge
2 208V ac 3 –
4 480V ac 3 –
R 650V dc – Yes
d
Enclosure
Code Enclosure
1 Panel Mount - NEMA Type 1
F
Flange Mount - Front Chassis
NEMA Type 1, Rear Heatsink
UL Type 4X/12 for
Indoor/Outdoor Use
Drive Frame B, C, D, E only.
e
OIM
Code OIM
H LCD OIM
f
Communications
Code Communications
0 None

Overview P-5
Publication 9VT-UM001D-EN-P
Model Number Explanation
The Model Number is located on the actual drive nameplate.
Position
9VT 2 01 –017 H T A N N
abc defghi
a
Drive
Code Type
9VT VTAC 9
b
Voltage Rating
Code Voltage Phase Precharge
2 208V ac 3 –
4 480V ac 3 –
R 650V dc – Yes
c
Enclosure
Code Enclosure
01 NEMA Type 1
1F
Flange Mount - Front Chassis
NEMA Type 1, Rear Heatsink
UL Type 4X/12 for
Indoor/Outdoor Use
Drive Frame B, C, D, E only.
d1
Horsepower Rating
208V, 60 Hz Input
Code Hp Drive Frame
007 2 B
011 3 B
017 5 C
025 7.5 D
032 10 D
043 15 D
062 20 E
078 25 E
092 30 4
120 40 5
130 50 5
177 60 6
221 75 6
260 100 6
d2
Horsepower Rating
480V, 60 Hz Input
Code Hp Drive Frame
005 3 B
008 5 B
011 7.5 C
014 10 C
022 15 D
027 20 D
034 25 D
034 25 2
040 30 D
040 30 3
052 40 E
052 40 3
065 50 E
065 50 3
077 60 4
096 75 5
125 100 5
156 125 6
180 150 6
248 200 6
d3
Horsepower Rating
650V dc Input
Code Hp Drive Frame
096 75 5
125 100 5
156 125 6
180 150 6
248 200 6
e
OIM
Code OIM
B None
HLCD OIM
f
Braking Transistor
Code Brake
N None
T Braking Transistor
g
DC Bus
Code DC BusInductor
seYA
N None
h
Communications
Code Communications
N None
i
Control and I/O
Code Control I/O Drive
Frame
NStandard 24V B, C, D, E
AStandard 24V 2, 3, 4, 5, 6

P-6 Overview
Publication 9VT-UM001D-EN-P
VTAC 9 NEMA 1 Catalog Number Explanation
Drive Ratings
Frame Model Number
System Number
(Order Number)Voltage HP
208V AC 2 B 9VT201-007HTNNN 9VT-221H0N-D00
3 B 9VT201-011HTNNN 9VT-321H0N-D00
5 C 9VT201-017HTANN 9VT-521H0N-D00
7.5 D 9VT201-025HTANN 9VT-721H0N-D00
10 D 9VT201-032HTANN 9VT-1021H0N-D00
15 D 9VT201-043HTANN 9VT-1521H0N-D00
20 E 9VT201-062HTANN 9VT-2021H0N-D00
25 E 9VT201-078HTANN 9VT-2521H0N-D00
30 4 9VT201-092HNANA 9VT-3021H0A-D00
40 5 9VT201-120HNANA 9VT-4021H0A-D00
50 5 9VT201-130HNANA 9VT-5021H0A-D00
60 6 9VT201-177HNANA 9VT-6021H0A-D00
75 6 9VT201-221HNANA 9VT-7521H0A-D00
100 6 9VT201-260HNANA 9VT-10021H0A-D00
480V AC 3 B 9VT401-005HTNNN 9VT-341H0N-D00
5 B 9VT401-008HTNNN 9VT-541H0N-D00
7.5 C 9VT401-011HTANN 9VT-741H0N-D00
10 C 9VT401-014HTANN 9VT-1041H0N-D00
15 D 9VT401-022HTANN 9VT-1541H0N-D00
20 D 9VT401-027HTANN 9VT-2041H0N-D00
25 D 9VT401-034HTANN 9VT-2541H0N-D00
25 2 9VT401-034HTANA 9VT-2541H0A-D00
30 D 9VT401-040HTANN 9VT-3041H0N-D00
30 3 9VT401-040HTANA 9VT-3041H0A-D00
40 E 9VT401-052HTANN 9VT-4041H0N-D00
40 3 9VT401-052HTANA 9VT-4041H0A-D00
50 E 9VT401-065HTANN 9VT-5041H0N-D00
50 3 9VT401-065HTANA 9VT-5041H0A-D00
60 4 9VT401-077HNANA 9VT-6041H0A-D00
75 5 9VT401-096HNANA 9VT-7541H0A-D00
100 5 9VT401-125HNANA 9VT-10041H0A-D00
125 6 9VT401-156HNANA 9VT-12541H0A-D00
150 6 9VT401-180HNANA 9VT-15041H0A-D00
200 6 9VT401-248HNANA 9VT-20041H0A-D00
650V DC 75 5 9VTR01-096HNANA 9VT-75R1H0A-D00
100 5 9VTR01-125HNANA 9VT-100R1H0A-D00
125 6 9VTR01-156HNANA 9VT-125R1H0A-D00
150 6 9VTR01-180HNANA 9VT-150R1H0A-D00
200 6 9VTR01-248HNANA 9VT-200R1H0A-D00

Overview P-7
Publication 9VT-UM001D-EN-P
VTAC 9 Flange Mount Catalog Number Explanation
Drive Ratings
Frame Model Number
System Number
(Order Number)Voltage HP
208V AC 2 B 9VT21F-007HTNNN 9VT-22FH0N-D00
3 B 9VT21F-011HTNNN 9VT-32FH0N-D00
5 C 9VT21F-017HTANN 9VT-52FH0N-D00
7.5 D 9VT21F-025HTANN 9VT-72FH0N-D00
10 D 9VT21F-032HTANN 9VT-102FH0N-D00
15 D 9VT21F-043HTANN 9VT-152FH0N-D00
20 E 9VT21F-062HTANN 9VT-202FH0N-D00
25 E 9VT21F-078HTANN 9VT-252FH0N-D00
480V AC 3 B 9VT41F-005HTNNN 9VT-34FH0N-D00
5 B 9VT41F-008HTNNN 9VT-54FH0N-D00
7.5 C 9VT41F-011HTANN 9VT-74FH0N-D00
10 C 9VT41F-014HTANN 9VT-104FH0N-D00
15 D 9VT41F-022HTANN 9VT-154FH0N-D00
20 D 9VT41F-027HTANN 9VT-204FH0N-D00
25 D 9VT41F-034HTANN 9VT-254FH0N-D00
30 D 9VT41F-040HTANN 9VT-304FH0N-D00
40 E 9VT41F-052HTANN 9VT-404FH0N-D00
50 E 9VT41F-065HTANN 9VT-504FH0N-D00

P-8 Overview
Publication 9VT-UM001D-EN-P
Notes:

Publication 9VT-UM001D-EN-P
Chapter 1
Installation/Wiring
This chapter provides information on mounting and wiring the VTAC 9
Drive.
Most start-up difficulties are the result of incorrect wiring. Every
precaution must be taken to assure that the wiring is done as instructed.
All items must be read and understood before the actual installation
begins.
Important: If you are intalling a Bypass Package (Style B) Drive, also
refer to VTAC 9 AC Drive Installation Instructions,
publication 9VT-IN001 in addition to this publication.
For information on… See page For information on… See page
Opening the Cover 1-2 Disconnecting MOVs and
Common Mode Capacitors
1-18
Mounting Considerations 1-4
AC Supply Source Considerations 1-5 I/O Wiring 1-21
General Grounding Requirements 1-6 Speed Reference Control 1-35
Fuses and Circuit Breakers 1-7 Auto/Manual Examples 1-36
Power Wiring 1-7 EMC Instructions 1-37
Using Input/Output Contactors 1-16 FCC Instructions 1-40
!
ATTENTION: The following information is merely a guide for proper
installation. Rockwell Automation, Inc. cannot assume responsibility
for the compliance or the noncompliance 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.
Bypass Package (Style B) Drives

1-2 Installation/Wiring
Publication 9VT-UM001D-EN-P
Drive Frames B, C, D, and E have removable covers.
Drive Frames 2, 3, 4, 5, and 6 have hinged covers.
Drive Frames B Through E
Follow these steps for Drive Frames B…E.
❏Step 1. Loosen the drive cover screw(s) (refer to Figure 1.1).
❏Step 2. Lift the cover straight off the drive to avoid damaging
the connector pins.
Figure 1.1 Removing the Drive Cover (Frames B…D)
Opening the Cover
!
ATTENTION: DC bus capacitors retain hazardous voltages after
input power has been removed. After disconnecting input power, wait
five minutes for the DC bus capacitors to discharge and then check the
voltage with a voltmeter to ensure the DC bus capacitors are discharged
before touching any internal components. Failure to observe this
precaution could result in severe bodily injury or loss of life.
Front View Bottom View

Installation/Wiring 1-3
Publication 9VT-UM001D-EN-P
Figure 1.2 Removing the Drive Cover (Frame E)
Drive Frames 2 Through 6
Follow these steps for Drive Frames 2…6.
❏Step 1. Locate the slot in the upper left hand corner of the drive
(refer to Figure 1.3).
❏Step 2. Slide the locking tab up and swing the door open.
Figure 1.3 Opening the Drive Cover (Frames 2…6)

1-4 Installation/Wiring
Publication 9VT-UM001D-EN-P
Maximum Surrounding Air Temperature
Minimum Mounting Clearances
Specified vertical clearance requirements are intended to be from drive
to drive. Other objects can occupy this space; however, reduced airflow
may cause protection circuits to fault the drive. In addition, inlet air
temperature must not exceed the product specification.
Mounting Considerations
Drive Frames HP IP20, NEMA Type 1(1)
(1) IP20, NEMA Type 1 general purpose enclosures are intended for indoor use primarily
to provide a degree of protection against contact with equipment. These enclosures
offer no protection against airborne contaminants such as dust or water.
IP20, NEMA Type Open
Top Label Removed(2)
(2) Removing the adhesive top label from the drive changes the NEMA enclosure rating
from Type 1 to Open Type.
B, C, D, & E 3…25 @ 208V
2…50 @ 460V
50 degrees C
(122 degrees F)
NA
2, 3, & 4 30 @ 208V
25…60 @ 460V
40 degrees C
(104 degrees F)
50 degrees C
(122 degrees F)
5 & 6 40…75 @ 208V
75…150 @ 480V
50 degrees C
(122 degrees F)
NA
6 100 @ 208V
200 @ 480V
45 degrees C
(113 degrees F)
NA
76.2 mm
(3.0 in.)
76.2 mm
(3.0 in.)
76.2 mm
(3.0 in.)
76.2 mm
(3.0 in.)
101.6 mm
(4.0 in.)
101.6 mm
(4.0 in.)
50.8 mm
(2.0 in.)
101.6 mm
(4.0 in.)
101.6 mm
(4.0 in.)
PWR
STS
PORT
MOD
NETA
NETB
PWR
STS
PORT
MOD
NETA
NETB
Frames B…E Frames 2…6

Installation/Wiring 1-5
Publication 9VT-UM001D-EN-P
VTAC 9 drives are suitable for use on a circuit capable of delivering up
to a maximum of 200,000 rms symmetrical amperes, and a maximum of
480 volts.
If a system ground fault monitor (RCD) is to be used, only Type B
(adjustable) devices should be used to avoid nuisance tripping.
Unbalanced or Ungrounded Distribution Systems
If phase to ground voltage will exceed 125% of normal line to line
voltage or the supply system is ungrounded, refer to the Wiring and
Grounding Guidelines for PWM AC Drives, publication
DRIVES-IN001.
Input Power Conditioning
Certain events on the power system supplying a drive can cause
component damage or shortened product life. These conditions are
divided into 2 basic categories:
1. All drives
–The power system has power factor correction capacitors
switched in and out of the system, either by the user or by the
power company.
–The power source has intermittent voltage spikes in excess of
6000 volts. These spikes could be caused by other equipment on
the line or by events such as lightning strikes.
–The power source has frequent interruptions.
2. 5 HP or Less Drives (in addition to “1” above)
–The nearest supply transformer is larger than 100kVA or the
available short circuit (fault) current is greater than 100,000A.
–The impedance in front of the drive is less than 0.5%.
If any or all of these conditions exist, it is recommended that the user
install a minimum amount of impedance between the drive and the
source. This impedance could come from the supply transformer itself,
AC Supply Source Considerations
!
ATTENTION: To guard against personal injury and/or equipment
damage caused by improper fusing or circuit breaker selection, use only
the recommended line fuses/circuit breakers specified in Appendix A.
!
ATTENTION: VTAC 9 drives contain protective MOVs and common
mode capacitors that are referenced to ground. These devices should be
disconnected if the drive is installed on an ungrounded distribution
system. See page 1-18 for jumper locations.

1-6 Installation/Wiring
Publication 9VT-UM001D-EN-P
the cable between the transformer and drive or an additional transformer
or reactor. The impedance can be calculated using the information
supplied in Wiring and Grounding Guidelines for PWM AC Drives,
publication DRIVES-IN001.
The drive Safety Ground - PE 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 periodically checked.
For installations within a cabinet, a single safety ground point or ground
bus bar connected directly to building steel should be used. All circuits
including the AC input ground conductor should be grounded
independently and directly to this point/bar.
Figure 1.4 Typical Grounding
Safety Ground - PE
This is the safety ground for the drive that is required by code. This point
must be connected to adjacent building steel (girder, joist), a floor
ground rod or bus bar (see above). Grounding points must comply with
national and local industrial safety regulations and/or electrical codes.
Shield Termination - SHLD
The Shield terminal (see Figure 1.6 on page 1-11) provides a grounding
point for the motor cable shield. The motor cable shield should be
connected to this terminal on the drive (drive end) and the motor frame
(motor end). A shield terminating cable gland may also be used.
When shielded cable is used for control and signal wiring, the shield
should be grounded at the source end only, not at the drive end.
General Grounding Requirements
U (T1)
V (T2)
W(T3)
R(L1)
S(L2)
T (L3)
PE
SHLD