Penta KB Power KBVF 4G Series User manual

INSTALLATION AND OPERATION MANUAL
KBVF 4G SERIES
Variable Frequency Drives –For OEM Applications
Designed for Multiple Motor Technologies
(Asynchronous, PMSM, and Others)
Chassis / IP20 and NEMA 4 / IP65 Enclosures
Variable Speed / Soft-Start AC Motor Drive
with Electronic Motor Overload Protection
Rated for 208 – 230 and 400/460 Volt 50 Hz and 60 Hz
Motors from Subfractional thru 3 HP
Operates from 115, 208/230, and 400/460 Volt 50/60 Hz AC Line Input
THIS MANUAL COVERS THE FOLLOWING KBVF 4G SERIES MODELS
Chassis / IP20 Drives: KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D, 27, 29, 29 (1P), 42, 45, 48
NEMA 4 / IP65 Drives: KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF
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– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
2
TABLE OF CONTENTS
Section Page
1 Quick-Start Instructions ............................................................................................................................................................................... 4
1.1 Mounting ............................................................................................................................................................................................ 4
1.2 AC Line Input Fusing ......................................................................................................................................................................... 4
1.3 AC Line Input Connection .................................................................................................................................................................. 4
1.4 Motor Connection .............................................................................................................................................................................. 4
1.5 Ground Connection ............................................................................................................................................................................ 4
1.6 Main Speed Potentiometer Connection .............................................................................................................................................. 5
1.7 60 Hz and 50 Hz Motor Operation ...................................................................................................................................................... 5
1.8 Trimpot Adjustments .......................................................................................................................................................................... 5
1.9 Jumper Settings ................................................................................................................................................................................. 5
1.10 Signal Following Connection .............................................................................................................................................................. 5
1.11 Diagnostic LEDs ................................................................................................................................................................................ 5
2 Safety Warnings .......................................................................................................................................................................................... 5
3 Important Application Information on Electronic Motor Overload Protection ................................................................................................. 6
4 Introduction ................................................................................................................................................................................................. 6
4.1 Standard Features ............................................................................................................................................................................. 6
4.2 Protection Features ........................................................................................................................................................................... 6
4.3 Performance Features ....................................................................................................................................................................... 7
4.4 Trimpot Adjustments .......................................................................................................................................................................... 7
5 Electrical Ratings ........................................................................................................................................................................................ 9
6 General Performance Specifications ......................................................................................................................................................... 10
7 IP20 Finger-Safe Cover ............................................................................................................................................................................. 10
7.1 Removing the Finger-Safe Cover ..................................................................................................................................................... 10
7.2 Installing the Finger-Safe Cover ....................................................................................................................................................... 10
8 NEMA 4 / IP65 Enclosure .......................................................................................................................................................................... 11
8.1 Removing the Enclosure Cover ....................................................................................................................................................... 11
8.2 Installing the Enclosure Cover ......................................................................................................................................................... 11
9 Mounting ................................................................................................................................................................................................... 11
10 AC Line Input Fusing ................................................................................................................................................................................. 13
11 Electrical Connections ............................................................................................................................................................................... 14
11.1 AC Line Input Connection ................................................................................................................................................................ 14
11.2 Motor Connection ............................................................................................................................................................................ 15
11.3 Ground Connection .......................................................................................................................................................................... 15
11.4 Main Speed Potentiometer Connection ............................................................................................................................................ 15
11.5 Signal Following Connection ............................................................................................................................................................ 15
11.5.1 Voltage Following ................................................................................................................................................................ 15
11.5.2 Current following ................................................................................................................................................................. 16
11.6 Manual Start Switch Connection ...................................................................................................................................................... 16
11.7 Forward-Stop-Reverse Switch Connection....................................................................................................................................... 16
11.8 Enable Switch Connection ............................................................................................................................................................... 16
11.9 Run/Fault Relay Connection ............................................................................................................................................................ 17
12 Recommended High Voltage Dielectric Withstand Testing (Hi-Pot Testing) ............................................................................................... 17
13 Reconditioning the Bus Capacitors ............................................................................................................................................................ 18
14 On-Board Parameters – Selectable Jumpers ............................................................................................................................................ 18
14.1 AC Line Input Voltage Selection....................................................................................................................................................... 18
14.2 Motor Frequency Selection .............................................................................................................................................................. 18
14.2.1 Setting the Drive for 50 Hz or 60 Hz Motor Operation .......................................................................................................... 18
14.2.2 Setting the Drive for Two Times the Rated Motor RPM ....................................................................................................... 18
14.3 Automatic or Manual Start Selection ................................................................................................................................................ 18
14.4 Forward/Reverse Speed Selection ................................................................................................................................................... 19
14.5 Run/Fault Relay Operation Selection ............................................................................................................................................... 19
14.6 Analog or PWM Signal Input Selection ............................................................................................................................................. 19
14.7 5 Volt DC or 10 Volt DC Signal Input Selection ................................................................................................................................ 19
14.8 Voltage or Current Signal Input Selection ........................................................................................................................................ 19
15 On-Board Parameters – Adjustable Trimpots ............................................................................................................................................ 19
15.1 Minimum Speed Trimpot (MIN) ........................................................................................................................................................ 19
15.2 Maximum Speed Trimpot (MAX) ...................................................................................................................................................... 19
15.3 Acceleration Trimpot (ACC) ............................................................................................................................................................. 19
15.4 Deceleration Trimpot (DEC) ............................................................................................................................................................. 20
15.5 Slip Compensation Trimpot (COMP) ................................................................................................................................................ 20
15.6 Motor Overload (I2t) with RMS Current Limit Trimpot (CL) ................................................................................................................ 20
16 Drive Operation ......................................................................................................................................................................................... 20
16.1 Start-Up Procedure .......................................................................................................................................................................... 20
16.2 Fault Recovery ................................................................................................................................................................................ 20
16.3 Restarting the Drive After I2t Fault Has Cleared ............................................................................................................................... 20
17 Diagnostic LEDs ........................................................................................................................................................................................ 21
17.1 PWR (Power On) LED ..................................................................................................................................................................... 21
17.2 ST (Status) LED............................................................................................................................................................................... 21
18 Communication – RS-485 Modbus RTU .................................................................................................................................................... 21
18.1 Specifications .................................................................................................................................................................................. 21
18.2 Data Transmit and Data Receive LEDs ............................................................................................................................................ 21
19 Accessories ............................................................................................................................................................................................... 21
Limited Warranty ............................................................................................................................................................................... Back Cover

– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
3
TABLE OF CONTENTS (CONTINUED)
Table Page
1 Electrical Ratings ........................................................................................................................................................................................ 9
2 General Performance Specifications ......................................................................................................................................................... 10
3 Terminal Block Wire Size and Tightening Torque Specifications ............................................................................................................... 14
4 Drive Operating Condition and Run/Fault Relay Contact Status ................................................................................................................ 17
5 Fault Recovery and Resetting the Drive .................................................................................................................................................... 19
6 Drive Operating Condition and Status LED Indicator ................................................................................................................................. 21
7 RS-485 Specifications ............................................................................................................................................................................... 21
Figure Page
1 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D General Connections Diagram .......................................................................................... 4
2 KBVF-27, 27E, 27EF, 29, 29E, 29EF, 29EF (1P) General Connections Diagram ........................................................................................ 4
3 KBVF-29 (1P) General Connections Diagram.............................................................................................................................................. 4
4 KBVF-42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF General Connections Diagram .................................................................................. 4
5 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D Drive Layout ..................................................................................................................... 7
6 KBVF-27, 29, 29 (1P), 42, 45, 48 Drive Layout ............................................................................................................................................ 7
7 KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF Drive Layout ........................................................................ 8
8 KBVF-13, 21D, 22D, 23, 23D Mechanical Specifications ........................................................................................................................... 11
9 KBVF-14, 24, 24D, 26D Mechanical Specifications ................................................................................................................................... 12
10 KBVF-27, 29, 29 (1P), 42, 45, 48 Mechanical Specifications ..................................................................................................................... 12
11 KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF Mechanical Specifications ................................................. 13
12 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D AC Line Input, Motor, and Ground Connections .............................................................. 14
13 KBVF-27, 27E, 27EF, 29, 29E, 29EF AC Line Input, Motor, and Ground Connections .............................................................................. 14
14 KBVF-29 (1P), 29EF (1P) AC Line Input, Motor, and Ground Connections ................................................................................................ 15
15 KBVF-42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF AC Line Input, Motor, and Ground Connections ...................................................... 15
16 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D Main Speed Potentiometer Connection ........................................................................... 15
17 KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF Main Speed Potentiometer Connection ............................. 15
18 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D Voltage Following Connections ....................................................................................... 15
19 KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF Voltage Following Connections ......................................... 15
20 KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF Current Following Connections .......................................... 16
21 Manual Start Switch Connection ................................................................................................................................................................ 16
22 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D Forward-Stop-Reverse Switch Connection ..................................................................... 16
23 KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF Forward-Stop-Reverse Switch Connections ...................... 16
24 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D Enable Switch Connection .............................................................................................. 16
25 KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF Enable Switch Connection ................................................. 16
26 Run/Fault Relay Output Contacts Connection ........................................................................................................................................... 17
27 Typical Hi-Pot Test Setup .......................................................................................................................................................................... 17
28 KBVF-21D, 22D, 23D, 24D AC Line Input Voltage Selection ..................................................................................................................... 18
29 KBVF-26D AC Line Input Voltage Selection .............................................................................................................................................. 18
30 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D Motor Frequency Selection ............................................................................................. 18
31 KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF Motor Frequency Selection ................................................ 18
32 Available Torque vs. Output Frequency ..................................................................................................................................................... 18
33 Automatic Start.......................................................................................................................................................................................... 18
34 KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D Forward/Reverse Speed Selection ................................................................................. 19
35 KBVF-27, 27E, 27EF, 29, 29E, 29EF, 29EF (1P), 42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF Run/Fault Relay Operation Selection ... 19
36 Analog or PWM Signal Input Selection ...................................................................................................................................................... 19
37 5 Volt DC or 10 Volt DC Signal Input Selection .......................................................................................................................................... 19
38 Voltage or Current Signal Input Selection .................................................................................................................................................. 19
39 MIN Trimpot Range ................................................................................................................................................................................... 19
40 MAX Trimpot Range .................................................................................................................................................................................. 19
41 ACC Trimpot Range .................................................................................................................................................................................. 19
42 DEC Trimpot Range .................................................................................................................................................................................. 20
43 COMP Trimpot Range ............................................................................................................................................................................... 20
44 CL Trimpot Range ..................................................................................................................................................................................... 20
45 I2t Trip Time vs. Motor Current .................................................................................................................................................................. 20
GFCI DISCLAIMER
The drives are tested and designed to operate with standard and sensitive GFCIs. This ensures that our drives will operate with most GFCIs.
Motor characteristics, wire lengths, etc., may affect system performance with GFCIs. Therefore, to verify that your GFCI will operate with our
drive and in your application, it is highly recommended that you contact our Technical Support team with information about your application
and your specific GFCI. To read our online white paper on GFCIs: Click Here
UL NOTICE FOR KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D
115 Volt Drives: Suitable for use on a circuit capable of delivering not more than 5 kA RMS symmetrical Amperes. 115 Volts maximum.
Use copper conductors rated 75 °C. Suitable for operation in a maximum surrounding air temperature of 40 °C.
230 Volt Drives: Suitable for use on a circuit capable of delivering not more than 5 kA RMS symmetrical Amperes. 230 Volts maximum.
Use copper conductors rated 75 °C. Suitable for operation in a maximum surrounding air temperature of 40 °C.
UL NOTICE FOR KBVF-27, 27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF
230 Volt Drives: Suitable for use on a circuit capable of delivering not more than 5 kA RMS symmetrical Amperes. 230 Volts maximum.
Use copper conductors rated 75 °C. Suitable for operation in a maximum surrounding air temperature of 50 °C.
460 Volt Drives: Suitable for use on a circuit capable of delivering not more than 5 kA RMS symmetrical Amperes. 460 Volts maximum.
Use copper conductors rated 75 °C. Suitable for operation in a maximum surrounding air temperature of 50 °C.

– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
4
1 –QUICK-START INSTRUCTIONS
WARNING! High Voltage! Disconnect the main power before making connections to the drive. Do not depend on the PWR or ST LEDs
to no longer be illuminated as a guaranteed power off condition.
1.1 – MOUNTING
See Section 9 on page 11.
1.2 – AC LINE INPUT FUSING
It is recommended that a fuse(s) or circuit breaker be installed in the AC Line. Fuse each conductor that is not at ground potential. For the
recommended fuse size, see Table 1 on page 9. Also see Section 10 on page 13.
1.3 – AC LINE INPUT CONNECTION
Connect the AC Line input as shown in Figures 1 – 5.
CAUTION! The rated AC Line voltage of the drive must match the
actual AC line input voltage.
KBVF-13, 14: Rated for 115 Volt 1-phase AC Line input. Wire the AC Line
input to Terminals L1 and L2. See Figure 1.
KBVF-21D, 22D, 23D, 24D, 26D: The setting of Jumper J1 must match the
actual AC Line input voltage. Rated for 208/230 Volt 1-phase AC Line input
with Jumper J1 (on upper PCB) set to the "230V"
position (factory setting). Rated for 115 Volt 1-phase
AC Line input with Jumper J1 (on upper PCB) set to
the "115V" position. Wire the AC Line input to
Terminals L1 and L2. See Figure 1.
KBVF-23, 24: Rated for 208/230 Volt 1-phase AC
Line input. Wire the AC line input to Terminals L1 and
L2. See Figure 1.
KBVF-27, 27E, 27EF, 29, 29E, 29EF: Rated for
208/230 Volt 1-phase or 3-phase AC Line Input. Wire
the 1-phase AC Line input to Terminals L1 and L2.
Wire the 3-phase AC Line input to Terminals L1, L2,
and L3. See Figure 2.
KBVF-29 (1P), 29EF (1P): Rated for 208/230 Volt
1-phase AC Line input. Wire the AC Line input to
Terminals L1 and L2. Terminal L3 is not used. See
Figure 3.
KBVF-42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF:
Rated for 400/460 Volt 3-phase AC Line input. Wire
the AC Line input to Terminals L1, L2, and L3.
See Figure 4.
1.4 – MOTOR CONNECTION
Wire the motor to Terminals U, V, and W as shown in
Figures 1 – 4. Motor cable length should not exceed
100 ft. (30 m) – special reactors may be required –
contact Technical Support.
1.5 – GROUND CONNECTION
Connect the ground wire(s) (earth) to the chassis
green ground screw(s), as shown in Figures 1 – 4
above. Be sure the motor is also properly grounded.
Due to its double insulated design, the KBVF-21D
does not contain a ground screw.
IMPORTANT: 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 Warnings on page 5 before proceeding.
Reconditioning the Bus Capacitors: If this drive has been in storage for over one year, it is necessary to recondition the power supply bus
capacitors. To recondition the capacitors, apply the AC Line, with the drive in the Stop Mode, for a minimum of one hour. Not following this
procedure will cause the bus capacitors to fail.
FIGURE 1
KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D
GENERAL CONNECTIONS DIAGRAM (LAYOUT MAY VARY)
FIGURE 2
KBVF-27, 27E, 27EF, 29, 29E, 29EF
GENERAL CONNECTIONS DIAGRAM (LAYOUT MAY VARY)
FIGURE 3
KBVF-29 (1P), 29EF (1P)
GENERAL CONNECTIONS DIAGRAM (LAYOUT MAY VARY)
FIGURE 4
KBVF-42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF
GENERAL CONNECTIONS DIAGRAM (LAYOUT MAY VARY)

– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
5
1.6 – MAIN SPEED POTENTIOMETER CONNECTION
All drives are supplied with a remote mountable (5 kΩ) Main Speed Potentiometer to control motor speed. See Figures 1 – 4 on page 4.
Also see Section 11.4 on page 15.
KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D: Wire the Main Speed Potentiometer to Terminals P1 (low), P2 (wiper), and P3 (high).
The drive is factory set for forward speed operation. The jumper on CON2 is set to the "F" position. For reverse speed operation, set the
jumper on CON2 to the "R" position.
KBVF-27, 27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF: Wire the Main Speed Potentiometer
to TB1 Terminals COM (low), SIG (wiper), and +5V (high). For forward speed operation, wire a jumper between Terminals FWD and COM.
For reverse speed operation, wire a jumper between Terminals REV and COM.
1.7 – JUMPER SETTINGS
All jumpers have been factory set for most applications. Some applications may require setting of the jumpers to tailor the drive for a specific
requirement. See Section 14 on pages 18 and 19.
1.8 – 60 Hz AND 50 Hz MOTOR OPERATION
The drive is factory set for 60 Hz motor operation. Jumper J1 on KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D and Jumper J5 on KBVF-27,
27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF are set to the "60Hz" position. Jumper J2 on
KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D and Jumper J5 on KBVF-27, 27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E, 42EF,
45, 45E, 45EF, 48, 48E, 48EF are set to the "1X" position. For 50 Hz, 100 Hz, and 120 Hz motor operation, see Section 14.2 on page 18.
1.9 – TRIMPOT ADJUSTMENTS
All trimpots have been factory set for most applications. Some applications may require adjustment of the trimpots to tailor the drive for a
specific requirement. See Section 16 on page 20.
1.10 – SIGNAL FOLLOWING CONNECTION
An analog signal input can be used to control motor speed in lieu of the Main Speed Potentiometer. The drive output will linearly follow the
signal input. See Section 11.5 on page 15.
KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D: Accepts a 0 – 5 Volt DC signal input. The signal input must be isolated from the AC Line.
Wire the signal input positive lead (+) to Terminal P2 and the negative lead (–) to Terminal P1.
WARNING! Earth grounding signal wiring will damage the drive and void the warranty.
If a non-isolated signal is used, install the optional SIVFR-PS, which accepts voltage (0 to ±2.5 thru 0 to ±25 Volts DC) or current
(4 – 20 mA DC) signal inputs.
KBVF-27, 27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF: Built-in signal isolation. Accepts
voltage (0 to 5 Volts DC) or current (4 – 20 mA DC) signal inputs. Wire the signal input to Terminal Block TB1.
1.11 – DIAGNOSTIC LEDs
After applying power, observe the PWR (Power On) and ST (Status) LEDs to verify proper drive operation. See Section 17 on page 21.
2 –SAFETY WARNINGS
Definition of Safety Warning Symbols
Electrical Hazard Warning Symbol: Failure to observe this warning could result in electric shock or electrocution.
Operational Hazard Warning Symbol: Failure to observe this warning could result in serious injury or death.
SAFETY WARNING! –PLEASE READ CAREFULLY!
This product must 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 electrical connections, 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 protection must be worn and insulated adjustment
tools must be used when working 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 responsibility of the equipment manufacturer and
individual installer to supply this Safety Warning to the ultimate end user of this product. (SW 8/2012)
The drive contains electronic start/stop circuits, which can be used to start and stop the drive. However, these circuits are never to be used
as safety disconnects since they are not fail-safe. Disconnect the input power for this purpose. Be sure to read and 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 Technical support for Declaration of
Conformity. Installation of a CE approved RFI filter is required. Additional shielded cable and/or AC Line cables may be required along with a
signal isolator.

– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
6
3 –IMPORTANT APPLICATION INFORMATION ON ELECTRONIC MOTOR OVERLOAD PROTECTION
UL approved as an overload protector for motors. The drive contains Modified I2t Overload Protection. Part of this function consists of a
Current Limit (CL) circuit, which limits the drive current to a factory preset level of 160% of the rated drive current. The CL Trimpot is used to
recalibrate the drive current from 60% thru 200%. The Power Start™ circuit provides an overshoot function that allows most motors to develop
more than 200% of starting torque and breakdown torque.
Standard I2t is undesirable because it causes nuisance tripping. It allows a very high motor current to develop and will turn the drive off after a
short period of time. KB's RMS Current Limit Circuit avoids this nuisance tripping while providing maximum motor protection. If the motor is
overloaded to 120% of full load (75% of the CL setting), the I2t Timer starts. If the motor continues to be overloaded at the 120% level, the
drive will trip the I2t Fault after 30 minutes. If the motor is overloaded to 160% of full load, the drive will trip the I2t Fault after 6 seconds.
4 –INTRODUCTION
Thank you for purchasing the KBVF 4G Series Adjustable Frequency Drive. KB Electronics is committed to providing total customer
satisfaction by producing quality products that are easy to install and operate.
The drives are variable speed controls housed in Chassis / IP20 and NEMA 4 / IP65 washdown and watertight enclosures. They are designed
to operate 208 – 230 and 400/460 Volt 50 and 60 Hz PMSM motors from subfractional thru 3 HP. The sinewave 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 drive is easy to install and operate. Tailoring to specific applications is accomplished with selectable
jumpers and adjustable trimpots, which eliminate the computer-like programming required on other drives. However, for most applications no
adjustments are necessary.
MAIN FEATURES: Adjustable RMS Current Limit and I2t Motor Overload Protection (UL approved as an electronic overload protector for
motors). 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 on KBVF-27, 27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E,
42EF, 45, 45E, 45EF, 48, 48E, 48EF can be used to turn equipment on or off or to signal a warning if the drive is put into the Stop Mode or a
fault has occurred. The drive is suitable for machine or variable torque (HVAC) applications.
ACCESSORIES: Class A and B RFI Filter: For KBVF-21D, 22D, 23D, 24D, 26D. Externally mounted. Provide RFI and EMI Suppression.
Comply with CE Council Directive 89/336/EEC relating to the Class A Industrial Standard and Class B Residential Standard. Class A RFI
Filter: For KBVF-27EF, 29EF, 29EF (1P), 42EF, 45EF, 48EF. Built-in. Provide RFI and EMI Suppression. Comply with CE Council Directive
89/336/EEC relating to the Class A Industrial Standard. Liquidtight Fittings: For KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E,
45EF, 48E, 48EF. SIVFR-PS Signal Isolator with Power supply and Run/Fault Relay: For KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D.
Can be used for unidirectional (single-ended) or bidirectional (wig-wag) speed control and accepts voltage and current signal inputs. Dynamic
Brake Module: Provides up to 25% continuous and 200% instantaneous braking torque (maximum 1 HP (0.75 kW)).
4.1 – STANDARD FEATURES
• Simple to Operate: Does not require programming. Uses trimpots and jumpers, which are factory set for most applications.
• Diagnostic LEDs: Power on (PWR) and drive status (ST).
• Jumper Selection of Drive Output frequency: Increases the motor speed up to two times the rated RPM.
• Compatible with GFCIs: With optional software. Contact Technical support
• Industry Standard Mounting.
• IP20 Finger-Safe Cover: KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D, 27, 29, 29 (1P), 42, 45, 48.
• NEMA 4 / IP65 Enclosure: KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF.
• Run/Fault Relay Output Contacts: Built-in on KBVF-27, 27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E, 42EF, 45, 45E, 45EF, 48,
48E, 48EF. The optional SIVFR-PS is required on KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D. Can be used to turn equipment on or off
or to signal a warning if the drive is put into the Stop Mode or a fault has occurred.
• Quick-Connect Terminals: KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D. Facilitates wiring of AC Line, motor, remote Main Speed
Potentiometer, and signal inputs.
• Terminal Blocks: KBVF-27, 27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF. Facilitates
wiring of AC Line, motor, remote Main Speed Potentiometer, Run/Fault Relay Output Contacts, and signal inputs.
• Signal Isolation: Built-in on KBVF-27, 27E, 27EF, 29, 29 (1P), 29E, 29EF, 29EF (1P), 42, 42E, 42EF, 45, 45E, 45EF, 48, 48E, 48EF. The
optional SIVFR-PS is required on KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D. Provides isolation between a non-isolated signal and the
drive.
4.2 – PROTECTION FEATURES
• Motor Overload (I2t) with RMS Current Limit: Provides motor overload protection which prevents motor burnout and eliminates nuisance
trips. UL approved as an electronic overload protector for motors.
• Electronic Inrush Current Limit (EICL™): Eliminates harmful inrush AC Line current during startup. KBVF-21D, 22D contain ICL in lieu of
EICL™.
• 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.
• AC Line Input Phase Loss Detection: On KBVF-29, 45, 48 the drive trips if an AC Line input phase is loss.
• Motor Filter: Built-in on KBVF-21D, 22D, 13, 23, 23D, 14, 24, 24D, 26D. Reduces harmful voltage spikes to the motor.
• Undervoltage and Overvoltage: Shuts down the drive if the AC Line input voltage goes above or below the operating range.
• MOV Input Transient Suppression: Protects the drive components against damaging voltage spikes on the AC Line.
• Microcontroller Self-Monitoring and Auto-Reboot.

– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
7
4.3 – PERFORMANCE FEATURES
• 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.
4.4 – TRIMPOT ADJUSTMENTS
• Minimum Speed (MIN): Sets the minimum speed of the motor.
• Maximum Speed (MAX): Sets the maximum speed of the motor.
• Acceleration (ACC): Sets the amount of time for the motor to accelerate from zero speed to full speed.
• Deceleration (DEC): Sets the amount of time for the motor to decelerate from full speed to zero speed.
• Slip Compensation (COMP): Maintains set motor speed under varying loads.
• Current Limit (CL): Sets the current limit (overload) which limits the maximum current (torque) to the motor.
FIGURE 5
KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D
DRIVE LAYOUT
(LAYOUT MAY VARY SLIGHTLY) (KBVF-22 SHOWN WITHOUT THE FINGER-SAFE-COVER)
FIGURE 6
KBVF-27, 29, 29 (1P), 42, 45, 48
DRIVE LAYOUT
(LAYOUT MAY VARY SLIGHTLY) (SHOWN WITHOUT THE FINGER-SAFE-COVER)

– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
8
FIGURE 7
KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF
DRIVE LAYOUT
(LAYOUT MAY VARY SLIGHTLY) (SHOWN WITHOUT THE ENCLOSURE COVER)

– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
9
5 –ELECTRICAL RATINGS
TABLE 1
ELECTRICAL RATINGS
Model No.
Part No.1
Enclosure
Ac Line Input
Recommended
Fuse4 or
Circuit Breaker
Rating
(Amps)
Output
Net
Weight
Volts AC
(50/60 Hz)
Phase
(Ф)
Maximum
Current
(Amps AC)
Voltage
Range
(Volts AC)
Maximum
Continuous
Load Current
(Amps/Phase)
Maximum
Horsepower
(HP (kW))
lbs.
kg
KBVF-13
TBA
IP20
115
1
9.6
15
0 – 230
2.4
1/2 (0.37)
1.3
0.6
KBVF-14
TBA
IP20
208/230
1
14.0
20
0 – 230
4.0
1 (0.75)
2.2
1.0
KBVF-21D
TBA
IP20
115
1
4.0
5
0 – 230
1.0
1/10 (0.07)
0.7
0.3
208/230
1
2.5
KBVF-22D
TBA
IP20
115
1
6.0
10
0 – 230
1.5
1/4 (0.18)
1.3
0.6
208/230
1
3.8
5
KBVF-23
TBA
IP20
208/230
1
6.0
10
0 – 230
2.4
1/2 (0.37)
1.3
0.6
KBVF-23D
TBA
IP20
115
1
9.6
15
0 – 230
2.4
1/2 (0.37)
1.3
0.6
208/230
1
6.0
10
KBVF-24
TBA
IP20
208/230
1
10.0
15
0 – 230
4.0
1 (0.75)
2.2
1.0
KBVF-24D
TBA
IP20
115
1
14.0
20
0 – 230
4.0
1 (0.75)
2.2
1.0
208/230
1
10.0
15
KBVF-26D2
TBA
IP20
115
1
22.0
25
0 – 230
5.5
1½ (1.13)
2.9
1.3
208/230
1
14.0
20
KBVF-27
TBA
IP20
208/230
1
17.0
20
0 – 230
6.7
2 (1.5)
4.1
1.9
3
8.7
10
KBVF-27E
TBA
NEMA 4 / IP65
208/230
1
17.0
20
0 – 230
6.7
2 (1.5)
11.1
5
3
8.0
10
KBVF-27EF
TBA
NEMA 4 / IP65
208/230
1
17.0
20
0 – 230
6.7
2 (1.5)
11.1
5
3
8.0
10
KBVF-29
TBA
IP20
208/230
3
11.7
15
0 – 230
9.0
3 (2.25)
4.6
2.1
KBVF-29 (1P)
TBA
IP20
208/230
1
21.0
25
0 – 230
9.0
3 (2.25)
3.95
1.8
KBVF-29E
TBA
NEMA 4 / IP65
208/230
3
12.0
15
0 – 230
9.0
3 (2.25)
11.1
5
KBVF-29EF
TBA
NEMA 4 / IP65
208/230
3
12.0
15
0 – 230
9.0
3 (2.25)
11.1
5
KBVF-29EF (1P)
TBA
NEMA 4 / IP65
208/230
1
21.0
25
0 – 230
9.0
3 (2.25)
3.95
1.8
KBVF-42
TBA
IP20
400/460
3
2.6
5
0 – 400/460
2.0
1 (0.75)
11.1
5
KBVF-42E
TBA
NEMA 4 / IP65
400/460
3
—
—
0 – 400/460
—
1 (0.75)
11.1
5
KBVF-42EF
TBA
NEMA 4 / IP65
400/460
3
—
—
0 – 400/460
—
1 (0.75)
11.1
5
KBVF-453
TBA
IP20
400/460
3
5.3
10
0 – 400/460
4.6
3 (2.25)
11.1
5
KBVF-45E3
TBA
NEMA 4 / IP65
400/460
3
6.0
10
0 – 400/460
4.6
3 (2.25)
11.1
5
KBVF-45EF3
TBA
NEMA 4 / IP65
400/460
3
6.0
10
0 – 400/460
4.6
3 (2.25)
11.1
5
KBVF-483
TBA
NEMA 4 / IP65
400/460
3
—
—
0 – 400/460
—
3 (2.25)
11.1
5
KBVF-48E3
TBA
NEMA 4 / IP65
400/460
3
—
—
0 – 400/460
—
3 (2.25)
11.1
5
KBVF-48EF3
TBA
NEMA 4 / IP65
400/460
3
—
—
0 – 400/460
—
3 (2.25)
11.1
5
Notes: 1. The Part No. is TBA (To Be Assigned) and is OEM specific. 2. KBVF-26D is rated 2 HP (1.5 kW) for most premium efficiency
motors. 3. KBVF-45, 45E, 45EF, 48, 48E, 48EF are rated 0 – 400 Volts AC for 50 Hz motor operation and 0 – 460 Volts AC for 60 Hz motor
operation. 4. For fuse type, see Section 10 on page 13.

– KBVF 4G SERIES INSTALLATION AND OPERATION MANUAL –
10
6 –GENERAL PERFORMANCE SPECIFICATIONS
TABLE 2
GENERAL PERFORMANCE SPECIFICATIONS
Description
Specification
Factory Setting
115 Volt AC Line Input Voltage Operating Range (Volts AC ±15%)
115
—
208/230 Volt AC Line Input Voltage Operating Range (Volts AC ±15%)
208 / 230
—
400/460 Volt AC Line Input Voltage Operating Range (Volts AC ±15%)
380 – 460
—
Maximum Load (% Current Overload for 2 Minutes)
150
—
Carrier, Switching Frequency (kHz)
16, 8
—
Signal Following Input Voltage Range (Volts DC)
0 – 5
—
Run/Fault Relay Output Contact Rating (Amps at 30 Volts DC, 125 Volts AC, 250 Volts AC)
1, 0.5, 0.25
—
Output Frequency Resolution (Hz)
0.06
—
Minimum Speed Trimpot (MIN) Range (% Frequency Setting)
0 – 40
0
Maximum Speed Trimpot (MAX) Range (% Frequency Setting)
70 – 110
100
Acceleration Trimpot (ACC) Range (Seconds)
0.3 – 20
1.5
Deceleration Trimpot (DEC) Range (Seconds)
0.3 – 20
1.5
Slip Compensation Trimpot (COMP) Range at Drive Rating (Volts/Hz)
0 – 3
1.5
Current Limit Trimpot (CL) Range (% Full Load)
40 – 200
160
Motor Frequency Setting (Hz)
50, 60
60
Output Frequency Multiplier (1X, 2X) 1
1, 2
1
Minimum Operating Frequency at Motor (Hz)
0.3
—
Speed Range (Ratio)
60:1
—
Speed Regulation (30:1 Speed Range, 0 – Full Load) (% Base Speed) 2
2.5
—
Overload Protector Trip Time for Stalled Motor (Seconds)
6
—
Undervoltage/Overvoltage Trip Points for 115 Volt AC Line Input (± 5%) (Volts AC) 3
76 – 141
—
Undervoltage/Overvoltage Trip Points for 208/230 Volt AC Line Input (± 5%) (Volts AC) 3
151 – 282
—
Undervoltage/Overvoltage Trip Points for 400/460 Volt AC Line Input (± 5%) (Volts AC) 3
302 – 567
—
Braking
Regenerative 4
—
Operating Temperature Range (°C / °F) for
KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D, 27, 29, 29 (1P), 42, 45, 48
0 – 40 / 32 – 104
—
Operating Temperature Range (°C / °F) for
KBVF-27E, 27EF, 29E, 29EF, 29EF (1P), 42E, 42EF, 45E, 45EF, 48E, 48EF
0 – 50 / 32 – 122
—
Operating Humidity Range (% Relative, Non-Condensing)
0 – 95
—
Storage Temperature (°C / °F)
-25 – +85 / -13 – +185
—
Notes: 1. Allows the motor to operate up to two times the rated RPM. Constant horsepower will result when operating the drive in the "X2"
mode above the motor rated frequency. 2. Dependent on motor performance. 3. Do not operate the drive outside the specified AC Line input
voltage operating range. 4. DC Injection Braking available. Requires factory programming. Contact Technical Support.
7 –IP20 FINGER-SAFE COVER (KBVF-13, 14, 21D, 22D, 23, 23D, 24, 24D, 26D, 27, 29, 29 (1P), 42, 45, 48)
The Finger-Safe Cover provides protection against accidental contact with high voltage. The Finger-Safe Cover will have to be removed
before wiring the drive or setting selectable jumpers. All trimpots can be readjusted with the Finger-Safe Cover installed.
WARNING! High Voltage! Disconnect main power when removing or installing the Finger-Safe Cover. To prevent accidental contact with
high voltage, it is required that the Finger-Safe Cover be properly installed onto the drive after all wiring and setup is complete. It provides
protection against electric shock which limits the potential liability to the equipment manufacturer and installer.
7.1 – REMOVING THE FINGER-SAFE COVER
Notice the orientation of the Finger-Safe Cover before removing it. To remove the Finger-Safe Cover, gently lift the retainer clips until they
disengage from the base.
7.2 – INSTALLING THE FINGER-SAFE COVER
To install the Finger-Safe Cover, be sure it is properly oriented onto the base and the retainer clips are aligned. Gently push the Finger-Safe
Cover onto the base until the retainer clips are fully engaged with the base.