“The Right Control for Your Application.”
12095 NW 39 Street, Coral Springs, FL 33065-2516
KB Electronics, Inc. Telephone: 954-346-4900; Fax: 954-346-3377
(A42135) - Rev. A02 - 7/14/2004 - Z3052A02 Page 1 of 2
IMPORTANT: The following information and instructions are to be used as a supplement to the KBAC-24D Installation and Operation Manual
(Part No. A40289) until the new manual is available. The KBAC-24D manual must be read and understood before attempting to operate this
control. For further assistance, contact our Sales Department at 954-346-4900 or Toll Free at 800-221-6570 (outside Florida).
Figure 1 - Control Layout (Replaces Figure 1, on Page 4 of the M anual)
1 AC Line Input Voltage Selection (Jumper J1): The control is factory set for 230 Volt AC line input (Jumper J1 is not installed), as shown
in Figure 2. To set the control for 115 Volt AC line i nput, install the jumper (provided) at J1, as shown in Figure 3. See Figure 1, for the
location of Jumper J1.
WARNING! Do not install or remove Jumper J1 with the AC line connected. Be sure proper input voltage is applied to
the control corresponding to jumper setting. To prevent catastrophic failure, do not connect the control to a 230 Volt AC li n e
input with Jumper J1 installed.
Figure 2 - Control Set for 230 Volt AC Line Input
(Factory Setting, Jumper J1 Not Installed)
Figure 3 - Control Set for 115 Volt AC Line Input
(Jumper J1 Installed)
2 Run/Fault Relay (Terminal Block TB2): Normally Open (NO) and Normally Closed (NC) relay contacts are available at Terminal Block
TB2. When Jumper J8 is set t o the "R" position (factory setting), as shown in Figure 4, the relay functions as a Run Relay and the
contacts will change state when the control is running (Start/Stop Switch set to the "START" position). When Jumper J8 is set to the "F"
position, as shown in Figure 5, the relay functions as a Fault Relay and the contacts w
ill change state when a fault has occurred. For
information on Faults, see Section VI -B, on page 10 of the KBAC-24D Installation and Operating Instructions Manual. The relay contacts
are rated 1 Amp at 24 Volts DC and 0.5 Amps at 115 Volts AC. See Figure 1, for the location of Terminal Block TB2 and Jumper J8.
Spec Tech Industrial 203 Vest Ave. Valley Park, MO 63088 Phone: 888 SPECTECH
“The Right Control for Your Application.”
12095 NW 39 Street, Coral Springs, FL 33065-2516
KB Electronics, Inc. Telephone: 954-346-4900; Fax: 954-346-3377
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(A42135) - Rev. A02 - 7/14/2004 - Z3052A02 Page 2 of 2
Figure 4 - Jumper J8 Set for Run Relay Operation
(Factory Setting) Figure 5 - Jumper J8 Set for Fault Relay Operation
3 Jog Speed (Jog Trimpot and Terminals JOG and COM): The JOG Trimpot is used to set a "jog" speed, as shown in Figure 6. The Jog
feature can be used by wiring a switch (or contact) from the JOG Terminal to the COM Terminal, as shown in Figure 7. When the switch
is closed, the Main Speed Potentiometer is disabled and the Jog Trimpot is used for the speed setting. When the switch is opened, the
control must be restarted using the Start/Stop Switch. The motor will then run at the Main Speed Potentiometer setting. See Figure 1, for
the location of the JOG Trimpot and Terminals "JOG" and "COM".
Figure 6 - JOG Trimpot Range Figure 7 - Jog Switch Connection
Notes: 1. Jog will operate even
if the drive is in Stop Mode. 2. After
Jog Switch is opened, the drive must
be restarted using the Start/Stop
Switch.
4 COMP and CL Trimpots: The COMP and CL Trimpots have been reoriented, as shown in Figures 8 and 9. See Figure 1, for the
location of the these Trimpots. Also see Sections VIII-E and VIII-F, on pages 12 and 13, of the KBAC-24D Installation and Operating
Instructions Manual.
Figure 8 - COMP Trimpot Range
Figure 9 - CL Trimpot Range
5 Horsepower Range (Jumper J2): The horsepower range of the control has been extended to include 1/8 HP motors. See Figure 1, for
the location of Jumper J2.
6 Motor Braking Selection (Jumper J7): Jumper J7 is factory set to the "RG" position for Regenerative Braking, as shown in Figure 10.
For DC Injection Braking, set Jumper J7 to the "INJ" position, as shown in Figure 11. When Jumper J7 is set to the "INJ" position, the
ACCEL Trimpot is used to set both the acceleration and deceleration time and the DECEL Trimpot is used to set the DC Injection Brake
voltage and time setting, as shown in Figure 12. See Figure 1, for the location of Jumper J7 and the DC Injection Brake (DECEL) Trimpot.
Adjust the Injection Brake by initially setting the Injection Brake Trimpot (DECEL Trimpot) fully clockwise (this is the longest braking time).
If this setting is not sufficient to stop the motor as required, adjust the Injection Brake Trimpot counterclockwise until the desired stop time
is obtained.
Figure 10 - Jumper J7 Set for
Regenerative Braking (Factory Setting)
Figure 11 - Jumper J7 Set for
DC Injection Braking
Figure 12 - DC Injection Brake
Trimpot Range (DECEL Trimpot)
7 Normally Open (NO) and Normally Closed (NC) "Stop" (Jumper J9): Jumper J9 is factory set to the "NO" position for a normally open
Stop contact, as shown in Figure 11. For a normally closed Stop contact, set Jumper J9 to the "NC" position, as shown in Figure 12. See
Figure 1, for the location of Jumper J9.
Note: When Jumper J9 is set to the "NC" position, the control can be wired with standard 3-wire external Start/Stop contact.
Figure 11 - Jumper J9 Set for
Normally Open Stop Contact (Factory Setting)
Figure 12 - Jumper J9 Set for
Normally Closed Stop Contact
INSTALLATION AND OPERATING INSTRUCTIONS
MODEL KBAC-24D
Adjustable Frequency Drive for 3-Phase AC Motors
NEMA 4X, IP-65
KB Part No. 9987 (Black Case) • Part No. 9988 (White Case)
Rated for 208 - 230 Volt 50/60 Hz Induction Motors thru 1 HP
Operates from 115 or 208/230 Volt 50/60 Hz Single Phase AC Line Input
Washdown and Watertight for Indoor and Outdoor Use
See Safety Warning on Page 2
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.
!
TM
A COMPLETE LINE OF MOTOR DRIVES
© 2000 KB Electronics, Inc.
POWER
STATUS
REVERSE
FORWARD
STOP
START
POWER
50
40
0
60
70
80
90
100
ON
OFF
30
20
10
NEMA 4X / IP65
AUTO
MANUAL
STOP
AC MOTOR SPEED CONTROL
PENTA
DRIVE
TM
% SPEED
TM
Pending
TABLE OF CONTENTS
Section Page
i. Simplified Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
ii. Safety Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
II. Wiring Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
III. Setting Selectable Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
IV. Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
V. Recommended High Voltage Dielectric Withstand Testing (Hi-Pot) . . . . . . . . . . . . . . . . . 9
VI. Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
VII. AC Line Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
VIII. Trimpot Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
IX. Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
X. Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
XI. Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Tables
1. Electrical Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2. General Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. Terminal Block Wiring Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4. Fault Recovery and Resetting the Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5. Control Mode and Status LED Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figures
1. Control Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. Enlarged View of Trimpot Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5. Remote Main Speed Potentiometer Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6. Remote Start/Stop Switch Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7. Start/Stop Function Eliminated (Jumper Installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
8. Voltage Following Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
9. Enable Circuit Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
10. AC Line Input Voltage Selection (J1 and J2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
11. Motor Horsepower Selection (J3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
12. Reset Mode Selection (J4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
13. Motor Frequency Selection (J5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
14. Motor Frequency Multiplier Selection (J6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
15. Boost Mode Selection (J7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
16. Hi-Pot Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
17. MAX Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
18. MIN Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
19. ACCEL Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
20. DECEL Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
21. COMP Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
22. CL Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
23. I
2
t Trip Time vs Motor Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
23. BOOST Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ii
i. SIMPLIFIED OPERATING INSTRUCTIONS
Application Information
– Most totally enclosed fan-cooled (TEFC) and open ventilat-
ed 3-phase motors will overheat if used with an inverter beyond a limited speed range at
full torque. Therefore, it is necessary to reduce motor load as speed is decreased.
Note: Some fan-cooled motors can be used over a wider speed range. Consult motor
manufacturer for details.
WARNING! There are some motors whose characteristics cause overheating and
winding failure under light load or no load conditions. If the motor is operated in
this manner for an extended period of time, it is recommended that the unloaded motor
current be checked from 2-15 Hz (60-450 RPM) to ensure motor current does not exceed
the nameplate rating. Do not use motor if the motor current exceeds the nameplate
rating.
Inverter duty and most totally enclosed non-ventilated (TENV) motors can provide full
rated motor torque over an extended speed range without overheating.
It is recommended that this control be used with Inverter Duty or TENV
motors.
If external fan-cooling is provided, open-ventilated motors can also achieve an extended
speed range at full rated torque. A box fan or blower with a minimum of 100 CFM is rec-
ommended. Mount the fan such that the motor is surrounded by the airflow.
WARNING! Disconnect main power when making connections to the
control.
A. AC Line Connection – Connect the AC line to L1 and L2 terminals of Terminal Block
TB1 and the ground wire (Earth) to the green ground screw as shown in Figure 4, on
page 7, and as described in Section IIA, on page 7, and Section IIB, on page 7. Set
Jumpers J1 and J2 to the corresponding AC line input voltage (115 or 208/230 Volts
AC).
B. Motor Connection – Connect the motor to U, V and W terminals of Terminal Block
TB1 as shown in Figure 4, on page 7, and as described in Section IIC, on page 7.
Motor cable length should not exceed 100 feet (30m) – special reactors may be
required – contact the Sales Department.
C. Start/Stop Switch – The control is supplied with a prewired Start/Stop Switch as
described in Section IIE, on page 7, which is used to start and stop the control. In
Manual Start Mode, this switch must be used to start the control each time the AC
power is lost or the control shuts down due to a fault.
D. Jumper Settings – All jumpers are factory set for most applications. Be sure Jumper
J3 is set to the correct motor HP. See Section IIIB, on page 8.
E. AC Line Fusing – Install a fuse or circuit breaker in the AC line. Fuse each con-
ductor that is not at ground potential. See Section VII, on page 11, for recommend-
ed fuse size.
F. Trimpot Settings – All trimpots have been factory set as shown in Figure 2, on page
4. Trimpots may be readjusted as described in Section VIII, on page 11.
G. Diagnostic LEDs – After power has been applied, observe the LEDs to verify prop-
er control operation as described in Section IX, on page 14.
1
IMPORTANT – You must read these simplified operating instructions before pro-
ceeding. These instructions are to be used as a reference only and are not intended
to replace the detailed instructions provided herein. You must read the Safety
Warning, on page 2, before proceeding.
!
!
!
I. INTRODUCTION
Thank you for purchasing the KBAC-24D. KB Electronics, Inc. is committed to providing total
customer satisfaction by producing quality products that are easy to install and operate. The
KBAC-24D is manufactured with surface mount components incorporating advanced circuit-
ry and technology.
The KBAC-24D Adjustable Frequency Drive is a variable speed control in a NEMA-4X / IP-
65 washdown and watertight enclosure. It is designed to operate 208 - 230 Volt 3-phase AC
induction motors through 3.6 Amps RMS. The sine wave coded Pulse Width Modulated
(PWM) output, which operates at a frequency of 16 kHz, provides high motor torque, high effi-
ciency and low noise. The control operates from 115 or 208/230 Volt 50/60 Hz single phase
AC line input.
Due to its user friendly design, tailoring the KBAC-24D to specific applications is easily
accomplished via selectable jumpers and trimpot adjustments. This eliminates the comput-
er-like programming required on other drives. However, for most applications no adjustments
are necessary.
Main features include adjustable RMS Current Limit and I
2
t Motor Overload Protection. In
addition, Adjustable Slip Compensation provides excellent load regulation over a wide speed
range. Power Start™ delivers over 200% motor torque to ensure startup of high frictional
loads. Electronic Inrush Current Limit (EICL™) eliminates harmful AC line inrush current and
Adjustable Linear Acceleration and Deceleration make the drive suitable for soft-start appli-
cations. Additional features include holding torque at zero speed and ride-through which pro-
vides a smooth recovery to the previous set speed during a momentary power loss.
2
ii. SAFETY WARNING! Please read carefully
This product should be installed and serviced by a qualified technician, electrician, or elec-
trical maintenance person familiar with its operation and the hazards involved. Proper instal-
lation, which includes wiring, mounting in proper enclosure, fusing or other overcurrent pro-
tection, and grounding can reduce the chance of electrical shocks, fires, or explosion in this
product or products used with this product, such as electric motors, switches, coils, solenoids,
and/or relays. Eye protection must be worn and insulated adjustment tools must be used
when working with control 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. If further information is required
on this product, contact the factory. It is the responsibility of the equipment manufacturer and
individual installer to supply this Safety Warning to the ultimate end user of this product. (SW
effective 11/1992.)
This control contains electronic Start/Stop circuits that can be used to start and stop the
control. However these circuits are never to be used as safety disconnects since they are not
fail-safe. Use only the AC line for this purpose.
Be sure to follow all instructions carefully. Fire and/or electrocution can result due to
improper use of this product.
!
This product complies with all CE directives pertinent at the time of manufacture.
Contact factory for detailed installation and Declaration of Conformity. Installation of
a CE approved RFI filter (KBRF-300 [P/N 9484] or equivalent) is required. Additional shield-
ed motor cable and/or AC line cables may be required along with a signal isolator (SIAC [P/N
9488] or equivalent).
Standard front panel features include diagnostic LEDs for power on and control 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 (MAX, MIN, ACCEL,
DECEL, COMP, CL, BOOST) and selectable jumpers (line voltage, motor horsepower, auto
or manual reset modes, motor frequency, frequency multiplier, fixed or adjustable boost).
Optional accessories include a Forward-Stop-Reverse Switch, Power On/Off Switch, Signal
Isolator, Auto/Manual Switch, and Multi Speed Board. Quick-connect terminals are provided
for easy installation of all accessories.
STANDARD FEATURES
• Motor Overload Protection (I
2
t)* – Provides motor overload protection which prevents motor
burnout and eliminates nuisance trips.
• Power Start™ – Provides more than 200% starting torque and ensures startup of high fric-
tional loads.
• Electronic Inrush Current Limit (EICL™) – Eliminates harmful inrush AC line current dur-
ing startup.
• Dual Voltage Input – The control operates from 115 or 208/230 Volt 50/60 Hz single phase
AC line Input.
• Horsepower Selection – The control contains a horsepower selection jumper which elimi-
nates the need to recalibrate the CL trimpot for different motors.
• Short Circuit Protection – Shuts down the control if a short circuit occurs at the motor
(phase-to-phase).
• Regeneration Protection – Eliminates tripping due to bus overvoltage caused by rapid
deceleration of high inertial loads.
• Slip Compensation with Boost – Provides excellent load regulation over a wide speed
range.
• Start/Stop Switch – Provides electronic start and stop.
• Ride-Through – Provides smooth recovery to the previous set speed during a momentary
power loss.
• Diagnostic LEDs – Power on (POWER) and control status (STATUS).
• Barrier Terminal Block – Facilitates wiring of motor and AC line.
• Protection Features – Undervoltage and overvoltage protection. MOV input transient pro-
tection. Microcontroller self-monitoring and auto reboot. Short circuit protected phase-to-
phase at motor.
• Industrial Duty Die-Cast Aluminum Case – Available in black finish (P/N 9987) or white
FDA approved finish (P/N 9988).
• Holding Torque at Zero Speed – Resists motor shaft rotation when the control is in stop
mode.
Note: * UL approved as an electronic overload protector for motors.
3
TABLE 1 – ELECTRICAL RATINGS
1, (0.75)
Maximum
Horsepower Rating
HP, (kW)
AC Line Input Voltage
±10%, 50/60 Hz
(Single Phase Volts AC)
Maximum Continuous
Output Load Current
(RMS Amps/Phase)
115
Maximum
AC Line Input Current
(Amps AC)
16
Nominal
Output Voltage
(Volts AC)
0 – 230 3.6
208/230 10 0 – 230 3.6 1, (0.75)
VIOLET
WHITE
ORANGE
(BACK VIEW)
MAIN SPEED POTENTIOMETER
(BACK VIEW)
START/STOP SWITCH
NOTES:
1. REV TERMINAL IS USED
FOR OPTIONAL
FWD-STOP-REV SWITCH.
2. R/F, B- AND B+ TERMINALS
ARE USED FOR OPTIONAL
SIAC SIGNAL ISOLATOR.
RED
BLACK
WHITE
CL BOOSTCOMPACCEL DECELMINMAX
P2 P1P3
STOP
FWD
RUN
REV
COM
STOP
R/F
G
B
R
Y
POWER STATUS
LED BOARD
CON1
J1
115V 230V
L2B
(RED)(WHT)
BC0 BC+ B+
(BLK)
B- BC-
L2AL1BL1A
L2
AC LINE
L1
WVU
MOTOR
TB1
KBAC-24D
1/2
1/4
3/4
1HP
ADJ
MULT
2X
1X
FREQ
50HZ
60HZ
BOOST
FIX
AUTO
MAN
J3
J7
J5
J6
J2
115V
J4
230V
4
FIGURE 1 – CONTROL LAYOUT
(Illustrates Factory Setting of Jumpers and Approximate Trimpot Settings)
CL BOOSTCOMPACCEL DECELMINMAX
FIGURE 2 – ENLARGED VIEW OF TRIMPOT SETTINGS
POWER
STATUS
REVERSE
FORWARD
STOP
START
POWER
50
40
0
60
70
80
90
100
ON
OFF
30
20
10
NEMA 4X / IP65
AUTO
MANUAL
STOP
AC MOTOR SPEED CONTROL
PENTA
DRIVE
TM
% SPEED
FORWARD-STOP-REVERSE AND POWER ON/OFF SWITCHES
KBAC-24D SHOWN WITH OPTIONAL AUTO/MANUAL,
RECOMMENDED MOUNTING SCREW: 1/4" (M6)
2.53
[139.97]
5.51
[128.59]
5.06
[7.97]
0.31
5.86
9.53
[224.00]
8.82
[208.17]
8.20
[241.96]
[64.35]
[148.94]
TM
5
FIGURE 3 – MECHANICAL SPECIFICATIONS (Inches / [mm])
II. WIRING INSTRUCTIONS
WARNING!
Read Safety Warning, on page 2, before using this control.
Disconnect the AC line before wiring.
Note: To avoid erratic operation, do not bundle AC line and motor wires with wires from sig-
nal following, Start/Stop Switch or any other signal wires. Use shielded cables on all signal
wiring over 12” (30cm). Shield should be Earth grounded on the control side only. Wire the
control in accordance with the National Electrical Code requirements and other codes that
may apply to your area. See Table 3 and Figure 4, on page 7.
Be sure to properly fuse each AC line conductor that is not at ground potential.
Do not fuse
neutral or grounded conductors. See Section VII, on page 11. A separate AC line switch
or contactor must be wired as a disconnect so that each ungrounded conductor is opened.
An accessory Power On/Off Switch (P/N 9482) may be used in lieu of, or in addition to, the
Start/Stop Switch. The switch can be wired for single pole or double pole operation, as
required.
To maintain the watertight integrity of the control, be sure to use suitable watertight connec-
tors and wiring which are appropriate for the application. Two 7/8” (22.2mm) knockout holes
are provided for standard 1/2” knockout connectors (not supplied) for wiring. A watertight
plug is provided if only one knockout is required.
The KBAC-24D is designed with a hinged case so that when the front cover is open, all wiring
stays intact. To open the cover, the four screws must be loosened so they are no longer
engaged in the case bottom. After mounting and wiring, close the cover making sure that the
wires do not get caught or crimped as the cover is closed. Tighten all four cover screws so
that the gasket is slightly compressed.
Do not over tighten.
6
!
1.5
Parameter Specification
Output Frequency (Hz)
Minimum Operating Frequency at Motor (Hz)
Factory Setting
AC Line Input Voltage (Volts AC, ±10%, 50/60 Hz) 115 or 208/230 208/230
Maximum Load Capacity (% for 2 Minutes) 150 —
Switching Frequency at Motor (kHz) 16 —
Signal Following (Non-Isolated Input
1
) Input Voltage (Volts DC) 0 – 5 —
Signal Following Input Resolution (Bits) 8 —
Maximum Speed Trimpot (MAX) Range (% of Frequency Setting) 70 – 110 100
Minimum Speed Trimpot (MIN) Range (% of Frequency Setting) 0 – 40 0
Acceleration Trimpot (ACCEL) Range (Seconds) 0.3 – 20 1.5
—
Deceleration Trimpot (DECEL) Range (Seconds) 0.3 – 20 1.5
Slip Compensation Trimpot (COMP) Range (Volts/Hz/Amp) 0 – 3
Current Limit Trimpot (CL) Range (% Range Setting) 0 – 200 160
Boost Trimpot (BOOST) Range for 50 Hz Output Frequency (Volts AC) 0 – 70 —
Boost Trimpot (BOOST) Range for 60 Hz Output Frequency (Volts AC) 0 – 35 5
Motor Horsepower Selection (HP) 1/4, 1/2, 3/4, 1 1
0 – 50, 0 – 60 0 – 60
1
Speed Regulation (30:1 Speed Range) (% Base Speed)
2
2.5 —
Speed Range (Ratio) 60:1 —
Operating Temperature Range (°C) 0 – 45 —
TABLE 2 – GENERAL PERFORMANCE SPECIFICATIONS
Frequency Multiplier (1X, 2X) 1, 2 1
Notes: 1. Requires an isolated signal. If a non-isolated signal voltage is used, install the SIAC Signal Isolator (P/N 9488).
2. Dependent on motor performance.
A. AC Line Connection – Wire the
AC line input to L1 and L2 terminals
of Terminal Block TB1 as shown in
Figure 4. Be sure
both Jumpers J1
and J2 are set to the “115V” posi-
tion for 115 Volt AC line input or to
the “230V” position for 208/230 Volt
AC line input.
B. Ground Connection – Earth
ground the control chassis using
the green ground screw that is pro-
vided on the inside of the control to
the right side of Terminal Block TB1
as shown in Figure 4.
C. Motor Connection – Wire the
motor leads to U, V and W termi-
nals of Terminal Block TB1 as
shown in Figure 4. Be sure
Jumper J3 is set to the correspon-
ding motor horsepower rating.
D. Remote Main Speed
Potentiometer Connection –
The control is supplied with a
prewired Main Speed
Potentiometer mounted on the front cover. To
operate the control from a remote potentiometer
(5kΩ), remove the white, orange, and violet
potentiometer leads from P1, P2 and P3 termi-
nals. The leads may be taped and left inside the
control.
The potentiometer assembly may be removed if a
watertight seal is used to cover the hole in the front
cover. Connect the remote main speed poten-
tiometer wires to P1 (low side), P2 (wiper) and P3
(high side) terminals as shown in Figure 5.
E. Remote Start/Stop Switch Connections – The control is
supplied with a prewired Start/Stop switch, mounted on the
front cover. To operate the control from a remote Start/Stop
Switch (type (ON)-OFF-ON, SPDT), remove the white, black
and red wires from RUN, COM and STOP terminals. The
leads may be taped and left in the control. The switch
assembly may be removed if a watertight seal is used to
cover the hole in the front cover. Connect the remote
Start/Stop Switch wires to RUN (momentary), COM (com-
mon) and STOP (constant) terminals as shown in Figure 6.
After applying power, momentarily set the Start/Stop Switch
to the "START" position. The motor will operate at the set speed of the Main Speed
Potentiometer. To stop the motor, set the Start/Stop Switch to the "STOP" position.
7
12
Supply Wire Gauge (AWG - Cu)
Minimum Maximum
Designation Connection
Maximum Tightening Torque
(in-lbs)
AC Line Input
Motor
L1, L2
U, V, W
22 12
22 12 12
TABLE 3 – TERMINAL BLOCK WIRING INFORMATION
TB1
L2
AC LINE
L1
WV
U
MOTOR
AC LINE
MOTOR
(EARTH)
GROUND
FIGURE 4 – POWER CONNECTIONS
P2 P1P3
CON1
(BACK VIEW)
ORANGE (WIPER)
WHITE (LOW)
VIOLET (HIGH)
MAIN SPEED POTENTIOMETER
FIGURE 5 – REMOTE MAIN SPEED
POTENTIOMETER CONNECTION
RED
WHITE
BLACK
START
STOP
START/STOP SWITCH
RUN
COM
STOP
R/F
FIGURE 6 – REMOTE START/STOP
SWITCH CONNECTION
RUN
COM
R/F
STOP
FIGURE 7 – START/STOP
FUNCTION ELIMINATED
(JUMPER INSTALLED)
Note: To eliminate the Start/Stop function, connect RUN and COM terminals with the
jumper that is provided. See Figure 7, on page 7.
CAUTION! Using a jumper to eliminate the Start/Stop function will cause the motor to run
at the Main Speed Potentiometer setting when the AC line is applied.
F. Voltage Following Connection – An isolated 0 - 5
Volt DC analog signal can also be used to control
motor speed. See Figure 8.
Note: If an isolated signal voltage is not available,
an optional signal isolator can be installed (SIAC,
P/N 9488). Connect the isolated signal voltage to
P2 (+) and P1 (-) terminals. The MIN trimpot must
be set fully counterclockwise.
G. Enable Circuit Connection
– The control can also be
started and stopped with an Enable circuit (close to
start). See Figure 9. The Enable
function is established by wiring a
switch in series with the orange
Main Speed Potentiometer lead
which connects to P2 terminal.
When the Enable switch is closed,
the control will accelerate to the
Main Speed Potentiometer setting.
When the Enable switch is opened,
the motor will coast to stop.
III. SETTING SELECTABLE JUMPERS
The KBAC-24D has customer selectable jumpers which must be set before the control can
be used. See Figure 1, on page 4, for location of jumpers.
Note: Disconnect the AC line before changing position of jumpers.
A. AC Line Voltage Selection (J1 and J2) – Jumpers J1 and J2 are both factory set to the
“230V” position, for 208/230 Volt AC line input. For 115 Volt AC line input, set
both
Jumpers J1 and J2 to the “115V” position. See Figure 10.
B. Motor Horsepower Selection (J3) – Jumper J3
is factory set to the “1HP” position, for 1HP
motors. For motors of lower horsepower, set
Jumper J3 to the corresponding position for the
motor being used. See Figure 11.
C. Reset Mode Selection (J4) – Jumper J4 is facto-
ry set to the "MAN" position, for manual resetting
of the control every time the AC line is applied or
after a fault condition has occurred (undervoltage,
overvoltage, phase-to-phase short circuit and I
2
t
8
Control Set for 208/230 Volt AC Line Input
(Factory Setting)
Control Set for 115 Volt AC Line Input
J1 Set for 208/230 Volt
AC Line Input
J2 Set for 208/230 Volt
AC Line Input
J1 Set for 115 Volt
AC Line Input
J2 Set for 115 Volt
AC Line Input
J1
230V115V
J2
230V
115V
J1
230V115V
J2
230V
115V
FIGURE 10 – AC LINE INPUT VOLTAGE SELECTION
FIGURE 11 – MOTOR
HORSEPOWER SELECTION
3/4, (0.5)
1/2, (0.37)
J3 Set for 1 HP Motor
(Factory Setting)
Motor Horsepower
HP, (kW)
1, (0.75)
1/4, (0.18)
FIGURE 9 – ENABLE CIRCUIT CONNECTION
SWITCH OR RELAY
(CLOSE TO START)
ENABLE
P2 P1P3
CON1
(BACK VIEW)
VIOLET (HIGH)
WHITE (LOW)
ORANGE (WIPER)
MAIN SPEED POTENTIOMETER
P1P2P3
CON1
+-
0 - 5V DC
(ISOLATED)
FIGURE 8 – VOLTAGE
FOLLOWING CONNECTION
fault). To set the control to automatically reset after a
fault has been cleared, set Jumper J3 to the "AUTO"
position. See Figure 12. (Also see section VIB, on page
10 and Table 4, on page 11.)
WARNING! The motor will automatically
restart when the AC line is applied, if Jumper
J4 is set to the "AUTO" or “MAN” position and the
Start/Stop Switch is eliminated with a jumper
installed between the RUN and COM terminals.
D. Motor Frequency Selection (J5)
– Jumper J5 is facto-
ry set to the “60Hz” position, for 60 Hz motors. For 50
Hz motors, set Jumper J5 to the “50Hz” position. See
Figure 13.
E. Motor Frequency Multiplier Selection (J6) – Jumper
J6 is factory set to the “1X” position, for motor frequency
corresponding to the frequency setting of Jumper J5 (50
or 60 Hz). To double the output frequency to the motor,
set Jumper J6 to the “2X” position (100 or 120 Hz). See
Figure 14.
Note: When doubling the motor frequency, the motor
will produce full torque up to its rated speed. The torque
will be linearly reduced to 50% at the maximum doubled
frequency.
F. Boost Mode Selection (J7): Jumper J7 is factory set to
the "FIX" position, for fixed boost voltage. For adjustable
boost voltage, using the BOOST trimpot, set Jumper J7
to the "ADJ" position. See Figure 15. (See section
VIIIG, on page 13).
IV. MOUNTING INSTRUCTIONS
WARNING! The KBAC-24D is not designed to be
used in an explosion-proof application.
It is recommended that the control be mounted vertically on
a flat surface with adequate ventilation. Leave enough room
below the control to allow for AC line, motor connections and
any other wiring. Although the control is designed for outdoor
and wash down use, care should be taken to avoid extreme
hazardous locations where physical damage can occur. If
the control is mounted in a closed, unventilated location,
allow enough room for proper heat dissipation. If operating
the control at full rating, a minimum enclosure size of 12”W X
24”H X 12”D is required. See Figure 3, on page 5.
V. RECOMMENDED HIGH VOLTAGE DIELECTRIC
WITHSTAND TESTING (HI-POT)
Testing agencies such as UL, CSA, VDE, etc., usually require that equipment undergo a hi-
pot test. In order to prevent catastrophic damage to the speed control, which has been
installed in the equipment, it is recommended that the following procedure be followed.
Figure 16, on page 10 shows a typical hi-pot test setup.
Note: All equipment AC line inputs must be disconnected from the AC power.
A. Connect all equipment AC power input lines together and connect them to the H.V. lead
of the hi-pot tester. Connect the RETURN lead of the hi-pot tester to the frame on which
the control and other auxiliary equipment are mounted.
9
!
FIGURE 12 – RESTART
MODE SELECTION
FIGURE 13 – MOTOR
FREQUENCY SELECTION
J5 Set for
60 Hz Motors
(Factory Setting)
J5 Set for
50 Hz Motors
J5
60 Hz
50 Hz
FREQ
J5
60 Hz
50 Hz
FREQ
FIGURE 14
MOTOR FREQUENCY
MULTIPLIER SELECTION
!
FIGURE 15
BOOST MODE SELECTION
J4 Set for Auto
Reset Mode
J4 Set for Manual
Reset Mode
(Factory Setting)
J4
AUTO
MAN
J4
AUTO
MAN
J6 Set for 1X
Motor Frequency
(Factory Setting)
J6 Set for 2x
Motor Frequency
J6
1X
2X
MULT
J6
1X
2X
MULT
J7 Set for
Adjustable Boost
J7 Set for
Fixed Boost
(Factory Setting)
J7
FIX
ADJ
BOOST
J7
FIX
ADJ
BOOST
B. The hi-pot tester must have an automatic ramp-up to the test voltage and an automatic
ramp-down to zero voltage.
Note: If the hi-pot tester does not have automatic ramping, then the hi-pot output must
be manually increased to the test voltage and then manually reduced to zero. This pro-
cedure must be followed for each machine to be tested. A suggested hi-pot tester is
Slaughter Model 2550.
WARNING! Instantaneously applying the hi-pot voltage will cause irreversible dam-
age to the speed control.
C. The hi-pot test voltage should be set in accordance to the testing agency standards and
the leakage current should be set as low as possible without causing nuisance trips.
D. To eliminate motor speed control damage due to auxiliary equipment hi-pot failure, it is
also recommended that all signal inputs be wired together and connected to the AC input
lines as shown.
VI. CONTROL OPERATION
A. Start-Up Procedure – After the control has been properly setup (jumpers and trimpots
set to desired positions and wiring completed), the startup procedure can begin. If the AC
power has been properly brought to the control, the POWER LED will be illuminated
green. The STATUS LED will indicate control status as described in Section IX, on page
14. To start the control, momentarily set the Start/Stop Switch to the "START" position.
The motor will begin to accelerate to the set speed.
Note: If the motor rotates in the incorrect direction, it will be necessary to disconnect the
AC line, reverse any two motor leads, and repeat the startup procedure.
B. Fault Recovery – The control has four fault states – undervoltage, overvoltage, short cir-
cuit at the motor (phase-to-phase) and I
2
t overload protection. To recover from any fault,
it is necessary to momentarily set the Start/Stop Switch to the "START" position.
If the Start/Stop function has been eliminated by installing a jumper between RUN and
COM terminals, then it will be necessary to either disconnect the AC line until the STA-
TUS LED indicates an undervoltage fault (approximately 20 seconds) or use the
Start/Stop Switch (if installed).
10
21
30
AC KILOVOLTS
RETURN
H. V.
(MAIN POWER DISCONNECTED)
TERMINALS TOGETHER
CONNECT ALL SPEED CONTROL
HIGH VOLTAGE DIELECTRIC WITHSTAND TESTER
MOTOR SPEED CONTROL
(HI-POT TESTER)
SIGNAL INPUTS
TERMINALS
L1
L2
FRAME
CHASSISCHASSIS
MOTOR
MOTOR WIRES
AC LINE INPUTS
RESET
TEST
TO BOTH
CONNECT HI-POT
AC LINE INPUT
LEAKAGE
0mA 10mA
MAX
ZERO
VOLTAGE
AUXILIARY EQUIPMENT
MACHINE OR EQUIPMENT FRAME
L1
L2
P1
P2
P3
FIGURE 16 – HI-POT SETUP
!
WARNING! The motor will automatically start when the AC line is applied or a
fault is cleared, if Jumper J4 is set to the “AUTO” or “MAN” position and the
Start/Stop Switch is eliminated.
VII. AC LINE FUSING
This control does not contain AC line fuses. Most electrical codes require that each
ungrounded conductor contain circuit protection. It is recommended to install a 20 Amp fuse
(Littelfuse 326, Buss ABC or equivalent) or a circuit breaker in series with each ungrounded
conductor. Check all electrical codes that apply to the application. Do not fuse motor leads.
VIII. TRIMPOT ADJUSTMENTS
The KBAC-24D contains trimpots, which are factory set for most
applications. Figure 2, on page 4 illustrates the location of the
trimpots and their approximate factory calibrated positions.
Some applications may require readjustment of the trimpots in
order to tailor the control for a specific requirement. Readjust
trimpots as described below.
WARNING! If possible, do not adjust trimpots with
the main power applied. If adjustments are made
with the main power applied, an insulated adjustment tool
must be used and safety glasses must be worn. High volt-
age exists in this control. Fire and/or electrocution can
result if caution is not exercised. Safety Warning, on page 2,
must be read before proceeding.
A. Maximum Speed (MAX):
Sets the maximum speed of the
motor. The MAX trimpot is factory set for 100% of base motor
speed. For a higher maximum speed setting, rotate the MAX
trimpot clockwise. For a lower maximum speed setting,
rotate the MAX trimpot counterclockwise. See Figure 17.
B. Minimum Speed (MIN): Sets the minimum speed of the
motor. The MIN trimpot is factory set for 0% speed. For a
higher minimum speed setting, rotate the MIN trimpot clock-
wise. See Figure 18.
C. Acceleration (ACCEL): Sets the amount of time for the
motor to accelerate from zero speed to full speed. The
ACCEL trimpot is factory set for 1.5 seconds acceleration.
For more rapid acceleration time, rotate the ACCEL trimpot
counterclockwise. For longer acceleration time, rotate the
ACCEL trimpot clockwise. See Figure 19.
Note: Rapid acceleration settings may cause the current limit
circuit to activate, which will extend the acceleration time.
D. Deceleration (DECEL): Sets the amount of time for the motor to decelerate from full
speed to zero speed. The DECEL trimpot is factory set for 1.5 seconds deceleration. For
11
!
9075
(Shown Factory Set to 100%)
100
80
Percent of Frequency Setting
70
110
FIGURE 17
MAX TRIMPOT RANGE
35
15
(Shown Factory Set to 0%)
40
30
0
Percent of Frequency Setting
FIGURE 18
MIN TRIMPOT RANGE
Disconnect and reconnect the AC
line.
Fault
Auto Mode
with Start/Stop Switch Installed
Manual Mode
with Start/Stop Switch Installed
Auto or Manual Mode
with Start/stop Switch Removed
Undervoltage
Overvoltage
Short Circuit
I
2
t
Control will automatically reset.
Reset the control with the
Start/Stop Switch.
Control will automatically reset.
Control will automatically reset.
Control will automatically reset.
Reset the control with the
Start/Stop Switch.
Reset the control with the
Start/Stop Switch.
Reset the control with the
Start/Stop Switch.
Reset the control with the
Start/Stop Switch.
Control will automatically reset.
Control will automatically reset.
TABLE 4 – FAULT RECOVERY & RESETTING THE CONTROL*
*Fault must be cleared before the control can be reset.
!
2.5
12.5
(Shown Factory Set to 1.5 Seconds)
1.5
5
Seconds
0.3
20
FIGURE 19
ACCEL TRIMPOT RANGE
more rapid deceleration time, rotate the DECEL trimpot coun-
terclockwise. For longer deceleration time, rotate the DECEL
trimpot clockwise. See Figure 20.
Note: To provide increased resolution of the ACCEL and
DECEL trimpots, 50% rotation covers 0.3 - 5 seconds.
Application Note: On applications with high inertial loads,
the deceleration may automatically increase in time. This will
slow down the rate of speed decrease to prevent the bus volt-
age from rising to the overvoltage trip point. This function is
called regeneration protection. It is recommended that for
very high inertial loads that both the ACCEL and DECEL
trimpots should not be set to less than ten (10) seconds.
E. Slip Compensation (COMP)
– Sets the amount of
Volts/Hz/Amp to maintain set motor speed under varying
loads. The COMP trimpot is factory set for 1.5 Volts/Hz/Amp.
The slip compensation may be adjusted by the COMP trim-
pot as described below. See Figure 21.
1. Wire an ammeter in series with one motor phase.
2. Run the motor and set the unloaded speed to approxi-
mately 50%.
3. Load the motor to the rated motor nameplate current
(Amps AC).
4. Adjust the COMP trimpot so that the loaded RPM is equal
to the unloaded RPM.
5. The motor is now compensated to provide constant
speed under varying loads.
F. Current Limit with I
2
t Shutdown (CL) – Sets the current
limit (overload), which limits the maximum current to the
motor. The current limit set point is established by the setting
of Jumper J3 and the setting of the CL trimpot. See Figure 22.
12
2.3
0.8
Shown Factory Set to 1.5 Volts/Hz/Am
p
1.5
3
0
Volts/Hz/Amp
FIGURE 21
COMP TRIMPOT RANGE
(Shown Factory Set to 160%)
Percent of Range Setting
80
40
160
200
120
FIGURE 22
CL TRIMPOT RANGE
2.5
12.5
(Shown Factory Set to 1.5 Seconds)
1.5
5
Seconds
0.3
20
FIGURE 20
DECEL TRIMPOT RANGE
110 150140130
10
120
160
50
1.0
0.1
SETTING (160%)
FACTORY CL
FIGURE 23 – I
2
t TRIP TIME vs MOTOR CURRENT
NOTES: 1. The CL set point is factory set to 160% of nominal motor current.
2. I
2
t Will not trip below 120% of the CL setting.
MOTOR CURRENT (%)
I
2
t TRIP TIME
(minutes)
The CL trimpot is factory set for 160% of Jumper J3 range setting. For a higher current
limit setting, rotate the CL trimpot clockwise. For a lower current limit setting, rotate the
CL trimpot counterclockwise. The current limit also contains I
2
t trip function. The control
will trip according to a predetermined current vs. time function. The trip curve is directly
related to the CL set point and can be changed with the CL trimpot. See Figure 23 on
page 12.
CAUTION! Adjusting the CL above 160% of the motor rating can cause overheating of
the motor. Consult the motor manufacturer. Do not leave the motor in a locked rotor con-
dition for more than a few seconds since motor damage may occur.
G. Boost (BOOST) – Sets the amount of boost voltage to the
motor. Jumper J7 is factory set to the "FIX" position, which
provides a predefined amount of boost voltage for 50 Hz and
60 Hz motors. To adjust the amount of boost voltage to the
motor, set Jumper J7 to the "ADJ" position. The amount of
boost voltage may be adjusted by the BOOST trimpot as
described below. See Figure 24.
1. Connect an analog AC ammeter in series with one of the
motor leads.
Note: Generally, digital or clamp-on ammeters do not
yield accurate readings.
2. Run the motor unloaded at approximately 4 Hz (or 120 RPM).
Note: An unloaded motor with excessive boost will draw more current than a partial-
ly loaded motor.
3. Adjust the BOOST trimpot until the ammeter reading reaches the motor nameplate
rating.
4. Using the Main Speed Potentiometer, slowly adjust the motor speed over a 0 - 15 Hz
(0 - 450 RPM) range. If the motor current exceeds the nameplate rating, lower the
boost setting.
WARNING! TO AVOID MOTOR WINDING OVERHEATING AND FAILURE, DO
NOT OVERBOOST THE MOTOR.
13
1 Sec On - 1 Sec Off
1 Sec On - 1 Sec Off
Control Mode
Slow Flash
Status LED Information
Flash Rate Color Sequence Illumination Duration Seconds
Run
Stand-By
1
Short Circuit
I
2
t Fault
Overload
Slow Flash
Slow Flash
Quick Flash
Steady
Undervoltage
Overvoltage
Recovered Undervoltage
2
Recovered Overvoltage
2
1 Sec Red - 1 Sec Yellow - 0.5 Sec Off -
1 Sec Green - 0.5 Sec Off
Quick Flash
Slow Flash
Quick Flash
Slow Flash
Green
Yellow
Red
Red
Red
Red - Yellow
Red - Yellow
Red - Yellow - Off - Green - Off
Red - Yellow - Off - Green - Off
1 Sec On - 1 Sec Off
0.25 Sec On - 0.25 Sec Off
Constant
0.25 Sec Red - 0.25 Sec Yellow
1 Sec Red - 1 Sec Yellow
0.25 Sec Red - 0.25 Sec Yellow -
0.5 Sec Off - 1 Sec Green - 0.5 Sec Off
Notes: 1. Only if the Forward-Stop-Reverse Switch is installed
2. Only if the control is in Manual Reset Mode (Jumper J4 set to the “MAN” position).
TABLE 5 – CONTROL MODE AND STATUS LED INDICATION
9
23
(Shown Factory Set to 5 Volts)
5
16
Volts
0
35
FIGURE 24
BOOST TRIMPOT RANGE
Stop Steady Yellow Constant
IX. DIAGNOSTIC LEDs
The KBAC-24D is designed with LEDs mounted on the front cover to display the control’s
operational status.
A. Power On (ON) – Indicates the presence of bus voltage.
B. Status (STATUS) – The Status LED is a tricolor LED that provides indication of the con-
trol’s operational status including installation problems such as incorrect input voltage,
overvoltage, undervoltage and control miswiring. It also provides a "normal" indication if
all control and microcontroller operating parameters are proper. See Table 5 on page 13.
X. OPTIONAL ACCESSORIES
Complete instructions and connection diagrams are supplied with all accessories to facilitate
installation.
A. Forward-Stop-Reverse Switch (P/N 9480) – Provides motor reversing and stop func-
tions. Mounts on the enclosure cover and is supplied with a switch seal to maintain water-
tight integrity.
B. Power On/Off Switch (P/N 9482) – Disconnects the AC line. Mounts on the enclosure
cover and is supplied with a switch seal to maintain watertight integrity.
C. Signal Isolator/Run Relay SIAC (P/N 9488): Provides isolation between a non-isolated
signal voltage source and the KBAC-24D and contains a Run Relay which can be used
to turn on or off equipment or to signal a warning if the control is put into the Stop Mode
or a fault has occured.
D. Auto/Manual Switch (P/N 9481) – When used with the SIAC, it either selects an isolat-
ed signal from the SIAC or the Main Speed Potentiometer. Mounts on the enclosure
cover and is supplied with a switch seal to maintain watertight integrity.
E. Multi Speed Board (P/N 9489) – Provides multi speed operation through a PLC.
(Available Spring 2001.)
14
– NOTES –
15
– NOTES –
16
– NOTES –
17
XI. LIMITED WARRANTY
For a period of 18 months from the date of original purchase, KB Electronics, Inc. will repair
or replace, without charge, devices which our examination proves to be defective in material
or workmanship. This warranty is valid if the unit has not been tampered with by unauthorized
persons, misused, abused, or improperly installed and has been used in accordance with the
instructions and/or ratings supplied. The foregoing is in lieu of any other warranty or guaran-
tee, expressed or implied. KB Electronics, Inc. is not responsible for any expense, including
installation and removal, inconvenience, or consequential damage, including injury to any per-
son, caused by items of our manufacture or sale. Some states do not allow certain exclusions
or limitations found in this warranty and therefore they may not apply to you. In any event, the
total liability of KB Electronics, Inc., under any circumstance, shall not exceed the full purchase
price of this product. (rev 2/2000)
(A40289) – Rev. A – 10/2000
KB Electronics, Inc.
12095 NW 39th Street, Coral Springs, FL 33065-2516 • (954) 346-4900 • Fax (954) 346-3377
Outside Florida Call TOLL FREE (800) 221-6570 • E-mail – [email protected]
www.kbelectronics.com
