KB Electronics KBPW-240D Data Sheet

Model KBPW-240D
KB Part No. 8401 (Black Case)
KB Part No. 8402 (White Case)

DESCRIPTION

The KBPW-240D is a PWM (pulse width modulated) control in a
NEMA-4X / IP-65 washdown and watertight enclosure designed to
operate Permanent Magnet and Shunt Wound motors through 7.5
Amps DC. The efficient PWM waveform, operating at a switching fre­quency greater than 16kHz, provides almost pure DC to the motor
(form factor <1.05). This provides high motor efficiency, whisper quiet
operation along with less motor heating. This allows for a smaller, less
costly motor to be used in most applications. Another advantage of
PWM is higher output voltage (up to 130 VDC for 115 VAC lines and
220 VDC for 230 VAC lines) which provides increased motor speed.

The KBPW-240D contains pulse-by-pulse current sensing, which
provides short circuit protection and prevents control damage due to
commutator arcing. Permanent magnet motor demagnetization is vir­tually eliminated because current peaks are reduced to safe levels. In
addition, the main power transistor is mounted to a heat spreader, pro­viding enhanced heat dissipation. This eliminates over temperature
cycles that cause premature transistor failure.

A unique feature of the KBPW-240D is its active bridge, which
substantially reduces the AC line surge current during cycling of the AC
line. This allows the control to be turned on and off rapidly without
damage to critical components. The active bridge is coupled with a
failsafe circuit that will shut down the control if the main power transis­tor shorts, preventing a dangerous high-speed runaway condition.
Motor burnout is prevented with the Timed Current Limit circuit (TCL)
by shutting down the control when an overload condition exists for a
predetermined amount of time. A special AC line input circuit auto­matically adjusts the control for 115 or 230 VAC.

Standard front panel features include diagnostic LEDs (for power
on, stop, and overload), Start/Stop switch, and Speed potentiometer.
Other features include barrier terminal blocks to facilitate wiring,
adjustable trimpots (accel, decel, max speed, min speed, current limit,
timed CL, IR comp, and jog speed), customer selectable jumpers
(motor voltage, motor current, timed current limit, and tach voltage),
and an output run relay.

Optional accessories include Fwd-Brk-Rev Switch, On/Off AC
Line Switch, Run-Stop-Jog Switch, Signal Isolator, and an Anti-plug
Reversing Module. Quick-connect terminals are provided for easy
installation of all accessories.

KBPW-240D

PWM DC MOTOR SPEED CONTROL

NEMA-4X / IP-65

For PM and Shunt Motors Rated:

1/50 – 3/4 HP (SCR), 1 HP (PWM) @ 115 VAC

1/25 – 1

1

⁄2 HP (SCR), 2 HP (PWM) @ 230 VAC

Rated 7.5 Amps DC, 11.5 Amps AC @ 115/230 VAC

Washdown and Watertight

for Indoor and Outdoor Use

STANDARD FEATURES

• Short Circuit Protection: Protects control from short circuits.

• Electronic Motor Burnout Protection: Shuts down the control if

a prolonged overload condition exists.

• Active Bridge: Limits AC Line inrush current.

• Power Transistor Short Circuit Protection: Prevents high speed

runaway if the power transistor shorts.

• Heat Spreader: Prevents power transistor failure during momen-

tary overload conditions.

• LEDs: Power on (ON), Stop (STOP) and Overload (OL).

•

Auto AC Line Select: Control automatically adjusts for 115 VAC
or 230 VAC – 50/60 Hz.

• Start/Stop Switch: Provides electronic start/stop function.

• Output Run Relay: Indicates state of control – (Run or Stop)

Pending

DATA SHEET D-105

TRIMPOT ADJUSTMENTS

• Acceleration (ACCEL) • Deceleration (DECEL)

• Maximum Speed (MAX) • Minimum Speed (MIN)

• Current Limit (CL) • Timed Current Limit (TCL)

• IR Compensation (IR) • Jog (JOG)

JUMPER SELECTABLE FEATURES

• J1, (T/90V/180V) selects nominal motor voltage or tachometer gen-

erator feedback.

• J2, (1.7A, 2.5A, 3.5A, 5.0A, 7.5A, also low current range) selects

motor current. See general performance specifications.

• J3, (TCL/NTCL) selects timed or non-timed current limit.

• J4, (7V/50V) selects tachometer generator voltage.

• J5, (NC/NO) selects normally closed or open run relay contacts.

OPTIONAL ACCESSORIES

• On/Off AC line switch (P/N 9341): Disconnects the AC line.

• FWD-BRK-REV switch (P/N 9339): Provides reversing and

dynamic braking.

• Run-Stop-Jog switch (P/N 9340): Selects speed setting from

either main potentiometer or JOG trimpot.

• Signal Isolator KBSI-240D (P/N 9431): Provides isolation between

non-isolated signal sources and the KBPW-240D.

• Anti-Plug Reversing Module APRM (P/N 9378A): Provides elec-

tronic braking and instant reversing.

• Auto/Manual Switch (P/N 9377): Selects either isolated signal

(from KBSI-240D) or main speed potentiometer signal.

A Complete Line of Motor Drives

*Note: Requires CE RFI filter KBRF-200A (KB P/N 9945) or equivalent.

*

™

MODEL KBPW-240D (KB Part No’s 8401 and 84021) – GENERAL PERFORMANCE SPECIFICATIONS

AC Line Voltage
(±10%, 50/60 Hz)

(VAC)

Maximum

Motor Voltage

(VDC)

115

Maximum AC

Line Current
(Amps RMS)

Maximum DC
Load Current

(Amps DC)

Maximum Horsepower

HP, (KW)

SCR Rated Motors PWM Rated Motors

3/4, (0.5)

230

130 11.5 7.5 1, (0.75)

Field Voltage

(VDC)

200

100

7.5 2, (1.5)11⁄2, (1)11.5220

0

100

Specification Factory SettingParameter

0 – 50

Operating Frequency (kHz)

0.5 – 10

Operating Temperature Range at Full Rating (ºC)

>16 –

Current Range (High Scale) (Amps DC)

0 – 45 –

1.7, 2.5, 3.5, 5.0, 7.5 7.5

Current Range (Low Scale) (Amps DC)

2

ACCEL and DECEL Range (Seconds)

Jog Seed (% Base Speed)

MIN Speed Range (% Base Speed (90VDC & 180VDC Motors))

MAX Speed Range (% Base Speed (90VDC & 180VDC Motors))

IR Comp Range at 115 Volts AC Line (∆Volts DC at full load)

IR Comp Range at 230 Volts AC LIne (∆Volts DC at full load)

CL Range (% Range Setting)

Timed Current Limit (TCL) Range (Seconds)

AC Line Input Voltage (Volts AC ±10%, 50/60 Hz)

Armature Voltage Range at 115 Volts AC Line Input (Volts DC)

Armature Voltage Range at 230 Volts AC Line Input (Volts DC)

Field Voltage at 115 Volts AC Line Input (Volts DC) –

–

Field Voltage at 230 Volts AC Line Input (Volts DC)

Speed Range (Ratio)

50:1

0.2, 0.3, 0.4, 0.5, 0.8

0.5 – 10

0 – 30

50 – 140

0 – 15

0 – 30

0 – 200

115 – 230

0 – 130

0 – 130

3

, 0 – 220

100

200

MECHANICAL SPECIFICATIONS (Inches / mm)

ELECTRICAL RATINGS

150

–

1

15

4

8

5

–

90

90

–

CONTROL LAYOUT & CONNECTION DIAGRAM

KB ELECTRONICS, INC.

12095 NW 39th Street, Coral Springs, FL 33065-2516 • [phone] • Fax [phone]
Outside Florida Call

TOLL FREE [phone] • E-mail – [e-mail]

www.kbelectronics.com

(A42102) – Rev. B – 3/2000

Notes: 1. KB P/N 8402 – FDA approved white epoxy finish. 2. For low current operation, remove R35. 3. Step-down operation – Motor may have reduced brush life – Consult motor manufacturer.

START/STOP

SWITCH

WHT

START

BLK

RED

STOP

VLT

ORN

WHT

MAIN SPEED

POTENTIOMETER

RUN RELAY

TACH INPUT

CON1

INH1

INH2

START

COM

STOP

K1

JOG

P3

P2

P1

TB4

K2

K1

RELAY

TB3
T-

T2

T+

TACH

J4

50V

7V

T1

D6

D20

TB2

(SHUNT MOTORS ONLY)

FIELD

ACCEL

NC NO

CON2

+

F1 F2

-

ON

YGR B

LED BOARD

J5

R35

BLKWHTRED

ORG

J6B

J6A

A2AA2BA1AA1B

TB1

+

M

-

MOTOR

TCL NTCL

CLSTOP

BLU BLU WHTWHT

J7A

L1A L1B L2A L2B

AC LINE

115/230 VAC

50/60 Hz

IRTCLCLJOGMINMAXDECEL

KBPW–240D
A57440

J3

J1

T

90V

D11Q3

J7B

L2L1A2A1

5.886



[149.50]

5.472


0.357


C56

C55

J2

AMPS

7.5

5.0

3.5

2.5

1.7

GROUND

(EARTH)

LH

0.8

0.5

0.4

0.3

0.2

180V

Q4

Q5

[9.07]

8.876
[225.45]

8.226



[208.94]



[138.99]

OLSTOPON

PENTA-DRIVE

PWM DC MOTOR SPEED CONTROL

50

40

30

20

10

0

%

FWD

BRK

REV

NEMA-4X / IP-65

RUN

START

STOP

JOG

™

60

70

80

90

100

™

5.000


[127.00]