with Electronic Motor Overload Protection for Inverter Duty Motors*
Washdown and Watertight for Indodor and Outdoor Use
Rated for 208 – 230 and 400/460 Volt 50 & 60 Hz
3-Phase & PSC** AC Induction Motors from 1 HP thru 5 HP
Operates from 115, 208/230 Volt and 400/460 Volt 50/60 Hz AC Line**
This Manual Covers Models KBAC-24D, 27D, 29, 45, 48
See Safety Warning,
on page 5.
The information contained in this manual is intended to be accurate. However, the manufacturer retains
the right to make changes in design which may not be included herein.
*UL approved as an electronic overload protector for motors. **Do not use this drive with GFCIs. Special
software is available – contact our Sales Department. ***Installation of a CE approved RFI filter is required.
Note: The drive is factory set for
***
60 Hz motors. For 50 Hz motors,
see Section 6.1, on pages 16 – 17.
Adjustable Frequency Drive, Installation and Operation Manual, Trimpot Adjustment Tool, CE Approved Product
Information Card, Warranty Registration Card.
iii
1 QUICK-START INSTRUCTIONS
see Section 5.2, on page 14.
Ground (Earth):
(Ter minals L1, L2, L3)
see Section 5.1, on pages 13 – 14.
(Models KBAC-29, 45, 48):
50/60 Hz, AC Line Input
208/230, 400/460 Volt, 3-Phase,
(Ter minals L1, L2)
see Section 5.1, on pages 13 – 14.
(Models KBAC-24D, 27D, 29):
50/60 Hz, AC Line Input
208/230 Volt, Single Phase,
3-Phase
see Section 5.3, on page 14.
AC Induction Motor:
AC LINEMOTOR
Motor
TB1
L2
L1VWUL3
Important – You must read these simplified instructions before proceeding. These instructions are to be
used as a reference only and are not intended to replace the details provided herein. You must read the
Safety Warning on, page 5, before proceeding.
See Figure 1. Also see Section 4 - Important Application Information, on page 12.
WARNING! Disconnect main power before making connections to the drive.
FIGURE 1 – QUICK-START CONNECTION DIAGRAM*
*Layout of Model KBAC-24D varies slightly.
1.1 AC LINE INPUT CONNECTION – Wire the AC line input to Terminal Block TB1. See Section 5.1, on
pages 13 – 14.
Application Note: Do not wire this drive to a GFCI. If operation with a GFCI is required, contact
our Sales Department.
Note: The rated AC line voltage of the drive must match the actual AC line input voltage. On Models
KBAC-24D, 27D, the setting of Jumper J1 must match the AC line input voltage.
Models KBAC-24D, 27D: Designed to accept single-phase (Terminals “L1”, “L2”) AC line input only.
Rated for 208/230 Volt AC line input with Jumper J1 set to the “230V” position (factory setting). Rated
for 115 Volt AC line input with Jumper J1 set to the “115V” position. See Figure 7, on page 13.
4
Note: Model KBAC-27D is rated for 11⁄2 HP maximum with 115 Volt AC line input and 2 HP maximum
with 208/230 V
Model KBAC-29: Designed to accept single-phase (T
“L2”, “L3”) AC line input. Rated for 208/230 Volt AC line input only. See Figure 8, on page 14.
Note: Rated for 2 HP maximum with single-phase AC line input and 3 HP maximum with 3-phase AC
line input.
olt AC line input.
erminals “L1”, “L2”) or 3-phase (T
erminals “L1”,
odels KBAC-45, 48: Designed to accept 3-phase (Terminals “L1”, “L2”, “L3”) AC line input only.
M
ated for 400/460 Volt AC line input only. See Figure 8, on page 14.
R
.2 AC LINE FUSING –It is recommended that a fuse(s) or circuit breaker be installed in the AC line.
1
use each conductor that is not at ground potential. For the recommended fuse size, see Table 4, on
F
age 10. Also see Section 10, on page 21.
p
.3 GROUND CONNECTION –Connect the ground wire (earth) to the ground screw, as shown in Figure
1
7, on page 13, and Figure 8, on page 14. See Section 5.2, on page 14.
1.4 MOTOR CONNECTION – Wire the motor to Terminal Block TB1 Terminals “U”, “V”, “W”, as shown in
Figure 7, on page 13, and Figure 8, on page 14. (Special reactors may be required for cable lengths
ver 100 ft. (30 m) – consult our Sales Department.) See Section 5.3, on page 14.
o
.5 60 Hz and 50 Hz MOTOR OPERATION –The drive is factory set for 60 Hz motor operation (Jumper
1
J5 set to the “60Hz” position). For 50 Hz motor operation, set Jumper J5 to the “50Hz” position. See
Section 6.4, on page 17.
1.6 START/STOP SWITCH – The drive is supplied with a prewired Start/Stop Switch to electronically
“start” and “stop” the drive, as described in Section 5.5, on pages 14 – 15. This switch must be used
to “start” the drive each time the AC line is applied to the drive or to “restart” the drive. Also see
Section 6.8, on page 18.
1.7 JUMPER SETTINGS – All jumpers have been factory set for most applications, as shown in Figure 2,
on page 9. Some applications require setting of the jumpers in order to tailor the drive for a specific
requirement. See Section 6, on pages 16 – 18.
1.8 TRIMPOT SETTINGS – All trimpots have been factory set for most applications, as shown in Figure
2, on page 9. Some applications require adjustment of the trimpots in order to tailor the drive for a
specific requirement. See Section 12, on pages 22 – 25.
1.9 DIAGNOSTIC LEDs – After power has been applied, observe the LEDs to verify proper drive opera-
tion, as described in Section 11, on pages 21 – 22.
2 SAFETY WARNING
Definition of Safety Warning Symbols
Electrical Hazard Warning Symbol – Failure to observe this warning could result in electrical
shock or electrocution.
Operational Hazard Warning Symbol – Failure to observe this warning could result in serious
injury or death.
This product should be installed and serviced by a qualified technician, electrician, or
electrical maintenance person familiar with its operation and the hazards involved. Proper
installation, which includes wiring, fusing or other current protection, and grounding can reduce the
chance of electrical shocks, and/or fires, in this product or products used with this product, such as
electric motors, switches, coils, solenoids, and/or relays. Do not use this drive in an explosion-proof
application. Eye pr
with drive under power. This product is constructed of materials (plastics, metals, carbon, silicon, etc.)
which may be a potential hazard. Proper shielding, grounding, and filtering of this product can reduce
the emission of radio frequency interference (RFI) which may adversely affect sensitive electronic
equipment. It is the r
Safety Warning to the ultimate end user of this product. Be sure to follow all instructions carefully.
Fire and/or electrocution can result due to improper use of this product. (SW 1/2006)
otection must be wor
esponsibility of the equipment manufacturer and individual installer to supply this
n and insulated adjustment tools must be used when working
5
his product complies with all CE directives pertinent at the time of manufacture. Contact our Sales
T
epartment for Declaration of Conformity. Installation of a CE approved RFI filter is required. See RFI
D
ilters & Chokes Selection Guide D-321 (Part No. A42027) for selection of filters to meet the Industrial or
F
esidential Standard. Additional shielded cable and/or AC line cables may be required along with a signal
R
solator (SIAC (Part No. 9488)).
i
3 INTRODUCTION
hank you for purchasing the KBAC Adjustable Frequency Drive. KB Electronics, Inc. is committed to pro-
T
iding total customer satisfaction by producing quality products that are easy to install and operate. The
v
BAC is manufactured with surface mount components incorporating advanced circuitry and technology.
K
The drives are variable speed controls housed in a rugged NEMA-4X / IP-65 washdown and watertight
die-cast aluminum enclosure. They are designed to operate 208 – 230 and 400/460 Volt 50 & 60 Hz
3-phase AC induction motors from 1 HP thru 5 HP. The sine wave coded Pulse Width Modulated (PWM) output operates at a carrier frequency of 16 kHz which provides high motor efficiency and low noise. Adjustable
Linear Acceleration and Deceleration are provided, making the drive suitable for soft-start applications.
Due to its user-friendly design, the KBAC AC drive is easy to install and operate. Tailoring to specific applications is accomplished with selectable jumpers and trimpots, which eliminate the computer-like programming
required on other drives. However, for most applications no adjustments are necessary. For more advanced
programming, PC based Drive-Link™ software is available.
2
Main features include adjustable RMS Current Limit and I
t Motor Overload Protection.* In addition,
Adjustable Slip Compensation with Static Auto-Tune and Boost provides high torque and excellent load regulation over a wide speed range. Power Start™ delivers over 200% motor torque to ensure start-up of high
frictional loads. Electronic Inrush Current Limit (EICL™) eliminates harmful AC line inrush current. A Run/Fault
Relay is provided, which can be used to turn on or off equipment or to signal a warning if the drive is put
into the Stop Mode or if a fault has occurred. The drive is suitable for machine or variable torque (HVAC)
applications. Also, a jumper is provided for selection of Regenerative or DC Injection Braking.
Standard front panel features include Diagnostic LEDs for “Power On” and “Drive Status”, a Start/Stop
Switch, and a Main Speed Potentiometer. Other features include a Barrier Terminal Block to facilitate wiring
of the AC line and motor, adjustable trimpots (MIN, MAX, ACCEL, DECEL, COMP, CL, JOG, BOOST), customer selectable jumpers (Line Voltage (dual voltage models only), Motor Horsepower, Automatic RideThrough / Manual Start, Motor Frequency, Frequency Multiplier, Fixed/Adjustable Boost,
Regenerative/Injection Braking, “Run” or “Fault” Output Relay Operation, NO/NC Stop Contact,
Constant/Variable Torque, I
2
t Overload Selection).
Optional accessories include: Forward-Stop-Reverse Switch, On/Off AC Line Switch, Run-Stop-Jog Switch,
Signal Isolator, Auto/Manual Switch, Class ”A” AC Line Filter, Multi-Speed Board, Programming Kit, Modbus
Communication Module, and Liquidtight Fittings. A connector is provided for easy installation of accessories.
Custom software: all models can be factory programmed for applications which require special timing, PLC
functions, and GFCI operation – contact our Sales Department.
*UL approved as an electronic overload protector for motors.
3.1 STANDARD FEATURES
• Industrial Duty Die-Cast Aluminum Case with Hinged Cover –
approved white finish.
• Simple to Operate – Does not require programming. Uses trimpots and jumpers, which are factory
set for most applications.
Motor HP Selection Jumper –
•
recalibration.
Diagnostic LEDs –
•
• Run/Fault Relay Output Contacts – Can be used to turn on or off equipment or to signal a
6
warning if the drive is put into the Stop Mode or a fault has occurred.
Allows the drive to be used on a wide range of motors without
Power on (POWER) and drive status (ST
Available in black finish or FDA
TUS).
A
Start/Stop Switch –Provides electronic start and stop functions.
•
• Barrier Terminal Block – Facilitates wiring of motor, AC line, and Run/Fault Relay Output Contacts.
Jumper Selection of Drive Output Frequency –Increases the motor speed up to two times the
•
ated RPM.
r
• Ride-Through – Provides smooth recovery to the previous set speed during a momentary power
oss (of less than 2 seconds).
l
• Holding Torque at Zero Speed – Resists motor shaft rotation when the drive is in Stop Mode.
Note: GFCI Operation – This drive can operate with GFCIs (optional software required) – contact our
ales Department.
S
.2 PERFORMANCE FEATURES
3
• Power Start™ –
Provides more than 200% starting torque which ensures startup of high frictional
loads.
• Slip Compensation with Static Auto-Tune and Boost – Provides excellent load regulation over a
wide speed range.
• Speed Range – 60:1
3.3 PROTECTION FEATURES
2
• Motor Overload (I
t) with RMS Current Limit* – Provides motor overload protection which pre-
vents motor burnout and eliminates nuisance trips.*
• Electronic Inrush Current Limit (EICL™) – Eliminates harmful Inrush AC line current during startup.
• Short Circuit – Shuts down the drive if a short circuit occurs at the motor (phase-to-phase).
• Regeneration – Eliminates tripping due to high bus voltage caused by rapid deceleration of high
inertial loads.
• Undervoltage and Overvoltage – Shuts down the drive if the AC line input voltage goes above or
below the operating range.
• MOV Input Transient Suppression.
• Microcontroller Self Monitoring and Auto Reboot.
*UL approved as an electronic overload protector for motors.
3.4 TRIMPOT ADJUSTMENTS
• Minimum Speed (MIN) –
Sets the minimum speed of the motor. See Section 12.1, on page 22.
• Maximum Speed (MAX) – Sets the maximum speed of the motor. See Section 12.2, on page 22.
• Acceleration (ACCEL) – Sets the amount of time for the motor to accelerate from zero speed to full
speed. See Section 12.3, on page 22.
• Deceleration (DECEL) – Sets the amount of time for the motor to decelerate from full speed to zero
speed. See Section 12.4, on page 23.
• DC Injection Brake (DECEL) – When the drive is set for DC Injection Braking (Jumper J7 set to the
“INJ” position), the DECEL trimpot is used to set the DC Injection Brake voltage and time. See
Section 12.5, on page 23.
Slip Compensation (COMP) –
•
Maintains set motor speed under varying loads. See Section 12.6,
on page 23.
• Current Limit (CL) – Sets the current limit (overload) which limits the maximum current to the motor.
See Section 12.7, on page 24.
• Boost (BOOST) – Sets the amount of Boost which can be used to obtain maximum low speed per-
formance. See Section 12.8, on pages 24 – 25.
• Jog (JOG) – Sets the “jog” speed of the motor. Must be used with the optional Run-Stop-Jog
Switch Kit (Part No. 9488). See Section 12.9, on page 25.
7
TABLE 1 – JUMPER SELECTABLE FEATURES
Description (bold indicates factory setting)
C Line Input Voltage (115,230
A
otor Horsepower (see Table 4 - Electrical Ratings)
M
utomatic Ride-Through or Manual Restart (A*,M)
A
Frequency Multiplier (1X, 2X)J4
Motor Frequency (50Hz, 60Hz)J5
Fixed or Adjustable Boost (FIX, ADJ)J6
Regenerative or DC Injection Braking (RG, INJ)J7
“Run” or “Fault” Output Relay Operation (R,F)J8
Normally Open or Closed Stop Contact (NO, NC)J9
Constant or Variable Torque (VT, CT)J10
Overload Selection (1,2)
I2t
* In Automatic Ride-Through Mode, the drive will automatically restart due to a momentary power loss of less than 2 seconds.
)J
PC Board
Designation
1
2
J
3
J
J11
KBAC-24D KBAC-27D KBAC-29KBAC-45KBAC-48
33
———
33333
33333
33333
33333
33333
33333
33333
33333
33333
33333
TABLE 2 – OPTIONAL ACCESSORIES
Model
Model
Description
Forward-Stop-Reverse Switch – Provides motor reversing and stop functions.
Mounts on the enclosure cover and is supplied with a switch seal to maintain
liquidtight integrity.
On/Off AC Line Switch – Disconnects the AC line. Mounts on the enclosure
cover and is supplied with a switch seal to maintain liquidtight integrity.
Run-Stop-Jog Switch – Selects speed setting from either the Main Speed
Potentiometer or the JOG Trimpot. Mounts on the enclosure cover and is supplied
with a switch seal to maintain liquidtight integrity.
Signal Isolator – Provides isolation between a non-isolated signal voltage source
and the drive. Mounts on the drive’s PC board with four snap-ins.
Auto/Manual Switch – When used with the Signal Isolator, it selects remote
process signal or the Main Speed Potentiometer. Mounts on the enclosure cover
and is supplied with a switch seal to maintain liquidtight integrity.
KBAC-24D
KBAC-27D
94809480948094809480
94829523953295329532
95249524952495249524
9488*9488*9488*9488*9488*
94819481948194819481
Model
KBAC-29
Model
KBAC-45
Model
KBAC-48
AC Line Filter1– Provides Class A RFI (EMI) suppression.
Installs onto the drive’s PC board with quick-connect terminals.
Suffix “S”: Filter is used when On/Off AC Line Switch is installed.
Suffix “NS”: Filter is used when On/Off AC Line Switch is not installed.
Multi-Speed Board – Provides multi-speed operation using external contacts or a
PLC. Mounts on the drive’s PC board with four snap-ins.
Programming Kit2– Includes DownLoad Module™ (DLM) handheld programming
device which uploads and downloads drive programs, PC to DLM serial communica-
tion cable, DLM to drive communication cable, and PC Windows® based DriveLink™ communication software.
Modbus Communication Module – Allows direct communication between drive
3
and Modbus
Liquidtight Fittings – Provide a liquidtight seal for wiring the drive. Kit includes two
1/2” and one 3/4” liquidtight fittings
Notes: 1. Complies with CE Council Directive 39/336/EEC Industrial Standard. 2. If a USB communication cable is required, purchase Part No. 19008.
3. Other protocols a
*W
protocol.
ble – contact our Sales Department.
vaila
ning!
ar
It is highly r
ecommended that the Signal Isolator (Part No. 9488) be installed when using the
Suffix “S”95169512947994799479
Suffix “NS”95079513951595159515
94899489948994899489
95829582958295829582
95179517951795179517
95269526952695269526
drive with external control signals.
8
Output Contacts:
Run/Fault Relay
Start/Stop Switch:
Main Speed Potentiometer:
Diagnostic LEDs:
J4: 1X or up to 2X
J9: Normally Open or ClosedJ11: I t Overload selection.
CON1: Used to connect
optional accessories to the drive.
Stop Contact selection.
Tor que selection.
J10: Constant or Variable
J7: Regenerative or
Output Relay Operation selection.
Injection Braking selection.
J8: "Run" or "Fault"
J6: Fixed or Adjustable Boost selection.
Rated Motor RPM Operation selection.
Motor Operation selection.
J5: 60 Hz or 50 Hz
All jumpers and trimpots are shown in factory set positions.
J1: AC Line Input Voltage selection
J2: Motor Horsepower selection.
(Models KBAC-24D, 27D only).
J3: Automatic Ride-Through
or Manual Restart selection.
2
Used with optional Run-Stop-Jog Switch Kit.
Adjustable Tri mpots.
JOG Terminal.
See Section 6.6, on page 18.
See Section 6.7, on page 18.
See Section 6.4, on pages 17.
See Section 6.4, on page 17.
See Section 6.5, on page 18.
See Section 6.1, on pages 16 – 17.
See Section 6.2, on page 17.
See Section 6.3, on page 17.
See Section 12, on pages 22 – 25.
See Table 2, on page 8.
2
see Section 5.5,
see Section 5.8,
on pages 16.
on pages 14 – 15.
Normally Closed
Red
Normally Open
Relay Common
see Section 5.4, on page 14.
Black
White
See Section 6.10, on page 18.
See Table 2, on page 8.
See Section 6.8, on page 18.
See Section 6.9, on page 18.
White (Low) (P1)
Violet (High) (P3)
Orange (Wiper) (P2)
see Section 11, on page 21.
STATUS
POWER
STOP
NCNO COM
FWDCOM RUN REV COM
CON3CON2
JOGP1P3P2
ACCELMINMAXJOGCLDECEL BOOST
TB2
MAJ32XJ450HzJ560Hz1X
J8J9
NCNOF
J11J10
CT21VT
CON1
FIXJ6RGR INJ
J7
ADJ
A
J2
ECD
B
COMP
⁄2”, “1”, “3/4”, “1/2”
1
1
FIGURE 2 – CONTROL LAYOUT
⁄2” position). Jumper J2 on Models KBAC-29, 45, 48 is labeled “A”, “B”,“C”, “D”, “E” (factory set according to Table 4, on page 10.
1
Notes: 1. Layout of Model KBAC-24D varies slightly. 2. Jumper J2 on Model KBAC-24D is labeled “1”, “3/4”,“1/2”, “1/4”, “1/8” (factory set to the “1” position). Jumper J2 on Model KBAC-27D is labeled “2”, “1
(factory set to the “1
9
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