Kb Electronics KBRC-240D User Manual.pdf

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INSTALLATION AND OPERATING INSTRUCTIONS

MODEL KBRC-240D

FULL-WAVE 4-QUADRANT REGENERATIVE DRIVE

NEMA 4X, IP-65

KB Part No. 8840 (Black Case) • Part No. 8841 (White Case)

Rated for 1/10 - 1 HP (90 Volts DC) @ 115 Volts AC, 50/60 Hz and 1/5 - 2 HP (180 Volts DC) @ 208/230 Volts AC, 50/60 Hz Washdown and Watertight for Indoor and Outdoor Use

ON STOP OL

TM

PENTA-DRIVE

REGENERATIVE

DC MOTOR SPEED CONTROL

40

50

60

 

30

 

70

20

 

80

10

 

90

0

%

100

FWD

REV

NEMA-4X / IP-65

START AUTO

STOP MANUAL

Pending

! See Safety Warning on Page 5

The information contained in this manual is intended to be accurate. However, the manufacturer retains the right to make changes in design which may not be included herein.

TM

A COMPLETE LINE OF MOTOR DRIVES

© 2003 KB Electronics, Inc.

 

TABLE OF CONTENTS

 

Section

Page

i.

Simplified Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . 4

ii.

Safety Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . 5

I.

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . 5

II.

Wiring Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 9

III.

Setting Selectable Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 14

IV.

Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 17

V.

Recommended High Voltage Dielectric Withstand Testing (Hi-Pot Testing) . . . . . . . . .

17

VI.

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 18

VII. AC Line Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 18

VIII. Trimpot Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 19

IX.

Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 22

X.

Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 22

XI.

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 24

Tables

 

1.

General Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 6

2.

Electrical Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 6

3.

Terminal Block Wiring Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 9

4.

Field Connection (Shunt Wound Motors Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 11

5.

Run Relay Output Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 13

6.

Setting Motor Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 15

7.

Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 18

Figures

1. Control Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Enlarged View of Trimpots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3. Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4. Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5. Full Voltage Field Connection (Shunt Wound Motors Only) . . . . . . . . . . . . . . . . . . . . . . 10 6. Half Voltage Field Connection (Shunt Wound Motors Only) . . . . . . . . . . . . . . . . . . . . . . 10 7. Unidirectional Forward Main Speed Potentiometer Connection . . . . . . . . . . . . . . . . . . . 11 8. Unidirectional Reverse Main Speed Potentiometer Connection . . . . . . . . . . . . . . . . . . . 11 9. Bidirectional Main Speed Potentiometer Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 10. Bidirectional Main Speed Potentiometer Connection with Reversing Contacts . . . . . . . . 12 11. Remote Start/Stop Switch Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 12. Start/Stop Function Eliminated (Jumper Installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 13. Voltage Following Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 14. Enable Circuit Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

ii

15.

DC Tach-Generator Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

16.

DC Tach-Generator Connection with Addition of RT . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

17.

AC Line Input Voltage Selection (J1 and J2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

18.

Motor Voltage Selection (J3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

19.

DC Tach-Generator Voltage Selection (J3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15

20.

Motor Current Selection (J4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15

21.

Analog Input Signal Voltage Selection (J5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15

22.

Control Mode Selection (J6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16

23.

Torque Mode Selection (J7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16

24.

Current Limit Mode Selection (J8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16

25.

Stop Mode Selection (J9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16

26.

Run Relay Output Mode Selection (J10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16

27.

Enable Jumper (J11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17

28.

Hi-Pot Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17

29.

Linear Torque Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18

30.

Non-Linear Torque Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18

31.

Offset (OFFSET) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

32.

Offset (OFFSET) Trimpot Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

33.

Forward Acceleration (FACC) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

34.

Reverse Acceleration (RACC) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

35.

Forward Acceleration (FACC) and Reverse Acceleration (RACC) Trimpot Adjustment . .

19

36.

Maximum Speed (MAX) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

37.

Forward Current Limit (FWDCL) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

38.

Reverse Acceleration (REVCL) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

39.

IR Compensation (IR) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

40.

Response (RESP) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21

41.

Deadband (DB) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21

42.

Deadband (DB) Trimpot Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21

43.

Timed Current Limit (TCL) Trimpot Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21

iii

i.SIMPLIFIED OPERATING INSTRUCTIONS

IMPORTANT – You must read these simplified operating instructions before proceeding. 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 5, before proceeding.

A.Power 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 10 and as described in Section IIA, on page 10 and Section IIB on page 10.

Be sure Jumpers J1 and J2 are both set to the corresponding AC line input voltage position, as described in Section IIIA, on page 14.

B.Permanent Magnet (PM) Motor Connection (Two Wire Type) – Connect the motor armature to M1 (+) and M2 (-) terminals of Terminal Block TB1, as shown in Figure 4, on page 10 and as described in Section IIC, on page 10. Be sure that Jumper J3 is set to the corresponding motor voltage position, as described in Section IIIB, on page 14 and Jumper J4 is set to the corresponding motor current, as described in Section IIID, on page 15.

Note: Do not use F+ and F- terminals of Terminal Block TB2 for any purpose other than to power the field of a shunt wound motor. Do not use F+ and F- terminals of Terminal Block TB2 for PM motors. Do not use F1 and F2 quick-connect terminals for any purpose other than to power the optional Signal Isolator SIRC (P/N 8842).

Note: Motor performance and efficiency, including brush life, may be adversely affected when operating the control in stepdown mode (208/230 Volt AC line with 90 Volt DC motors).

C.Shunt Wound Motors (Four Wire Type) – Connect the motor armature as described in Section IIC, on page 10.

Connect full voltage field wires (90 Volt DC motors with 100 Volt DC field and 180 Volt DC motors with 200 Volt DC field) to F+ and F- terminals of Terminal Block TB2, as described in Section IID, on page 10.

Connect half voltage field wires (90 Volt DC motors with 50 Volt DC field and 180 Volt DC motors with 100 Volt DC field) to F+ terminal of Terminal Block TB2 and L1 terminal of Terminal Block TB1, as described in Section IIE, on page 11.

Note: Do not connect motor armature leads to F+ and F- terminals of Terminal Block TB2 or to F1 and F2 quick-connect terminals. Do not use F1 and F2 quick-connect terminals for any purpose other than to power the optional Signal Isolator SIRC (P/N 8842).

D.Start/Stop Switch – The control is supplied with a prewired Start/Stop Switch, as described in Section IIG, on page 12. This switch must be used to start the control each time the AC power is lost or the control shuts down in TCL. To eliminate this function, see Section IIG, on page 12.

E.Motor Current – Jumper J4 is factory set for 10 Amp motors. For a lower current motor, set Jumper J4 to the corresponding motor current, as described in Section IIID, on page 15.

Note: The factory setting for Current Limit is 150% of the nominal current setting (example: if Jumper J4 is set to the “10A” position, the CL trimpot is calibrated for 15 Amps).

F.Trimpot Settings – All trimpots have been factory set, as shown in Figure 2, on page 7. Trimpots may be readjusted, as described in Section VIII, on page 19.

G.Diagnostic LEDs – After power has been applied, observe the LEDs to verify proper control function, as described in Section IX, on page 22.

4

ii.

! SAFETY WARNING! Please read carefully

This product should be installed and serviced by a qualified technician, electrician, or electrical maintenance person familiar with its operation and the hazards involved. Proper installation, which includes wiring, mounting in proper enclosure, fusing or other over current protection, 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 Sales Department. 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 9/2000).

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-200A [P/N 9945C] or equivalent) is required. Additional shield-

ed motor cable and/or AC line cables may be required along with a signal isolator (SIRC [P/N 8842] or equivalent).

I.INTRODUCTION

Thank you for purchasing the KBRC-240D. KB Electronics, Inc. is committed to providing total customer satisfaction by producing quality products that are easy to install and operate. The KBRC-240D is manufactured with surface mount components incorporating advanced circuitry and technology.

The KBRC-240D is a Full-Wave Regenerative Drive in a NEMA-4X / IP-65 washdown and watertight enclosure. It is designed to operate 90 and 180 Volt Permanent Magnet and Shunt Wound DC motors in a bidirectional mode. It provides 4-quadrant operation, which allows forward and reverse torque in both speed directions. This allows the control to maintain constant speed with overhauling loads and provides rapid instant reversing and controlled braking. Because of its excellent performance, the control can replace servo drives in many applications.

The KBRC-240D has a Regeneration Overspeed Protection Circuit, which prevents failure of the power bridge in extreme overhauling conditions. Motor overload protection (I X t) will shut down the control if the motor is overloaded for a predetermined amount of time. The exclusive Auto-Inhibit® circuit allows safe, smooth starting during rapid cycling of the AC line.

Due to its user-friendly design, tailoring the KBRC-240D to specific applications is easily accomplished via selectable jumpers and adjustable trimpots. However, for most applications, no adjustments are necessary.

The KBRC-240D can be operated from a two or three wire start/stop circuit or can be started from the AC line. A set of dedicated normally open or normally closed relay contacts are provided (Run Relay), which are activated via the start/stop circuit. They can be used to turn on or off equipment or to signal a warning if the control is put into Stop Mode or times out in TCL.

The Main features of the KBRC-240D include Speed (SPD) or Torque (TRQ) control modes. In the Linear Torque mode (S/L), speed and torque vary linearly as a function of Main Speed

5

Potentiometer rotation or input signal. In the Non-Linear Torque mode (NL), the torque is varied by the Main Speed Potentiometer or input signal, and remains constant throughout the motor’s entire speed range. In addition, Regenerate-to-Stop (RTS) or Coast-to-Stop (CTS) stop modes are also provided.

Standard front panel features of the KBRC-240D include diagnostic LEDs (for Power On, Stop and Overload), a Start/Stop Switch and a Main Speed Potentiometer. Other features include Barrier Terminal Blocks (facilitates wiring of the AC line, motor armature and field, tach-generator and run relay), adjustable trimpots (OFFSET, FACC, RACC, MAX, FWDCL, REVCL, IR, RESP, DB and TCL), selectable jumpers (AC line voltage, motor voltage or tach feedback, motor current, analog input voltage, control mode, torque mode, current limit mode, stopping mode, run relay output contacts and enable) and PC Board mounted LEDs (Power On, Overload, Forward Enable and Reverse Enable).

Optional accessories for the KBRC-240D include a Forward-Stop-Reverse Switch, Auto/Manual Switch, Power On/Off Switch and a Signal Isolator. Quick-connect terminals are provided for easy installation of all accessories. See Section X, on page 22.

TABLE 1 – GENERAL PERFORMANCE SPECIFICATIONS

Parameter

Specification

Factory

Setting

 

 

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

115 and 208/230

230

 

 

 

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

0 – ±90

 

 

 

Armature Voltage Range at 208/230 Volts AC Line (Volts DC)

0 – ±901, 0 – ±180

0 – ±180

 

 

 

Field Voltage at 115 Volts AC Line (Volts DC)

100/50

 

 

 

Field Voltage at 208/230 Volts AC Line (Volts DC)

200/100

 

 

 

Signal Following Input (Non-Isolated2) Range (Volts DC)

0 – ±10, 0 – ±15

0 – ±15

 

 

 

Signal Following Linearity (% Base Speed)

1

 

 

 

Line Regulation (% Base Speed)

±0.5

 

 

 

Armature Feedback Load Regulation (% Base Speed)

±1

 

 

 

Tach-Generator Feedback Load Regulation (% Set Speed)

±1

 

 

 

Maximum Load Capacity (% for 2 Minutes)

150

 

 

 

Current Ranges (Amps DC)

1.7, 2.5, 5, 7.5, 10

10

 

 

 

Speed Range (Ratio)

50:1

 

 

 

Operating Temperature Range (°C)

0 – 45

 

 

 

Offset Trimpot (OFFSET) Range (% Base Speed)

0 – ±10

0

 

 

 

Reverse Acceleration Trimpot (RACC) Range (Seconds)

0.2 – 15

1

 

 

 

Forward Acceleration Trimpot (FACC) Range (Seconds)

0.2 – 15

1

 

 

 

Maximum Speed Trimpot (MAX) Range (% Base Speed)

70 – 110

100

 

 

 

Forward Current Limit Trimpot (FWDCL) Range (% Range Setting)

0 – 200

150

 

 

 

Reverse Current Limit Trimpot (REVCL) Range (% Range Setting)

0 – 200

150

 

 

 

IR Compensation Trimpot (IR) Range at 90 Volts DC Output (Volts DC at Full Load)

0 – 15

 

 

 

IR Compensation Trimpot (IR) Range at 180 Volts DC Output (Volts DC at Full Load)

0 – 30

10

 

 

 

Deadband Trimpot (DB) Range (% Base Speed)

0 – ±3

0.5

 

 

 

Timed Current Limit Trimpot (TCL) Range (Seconds)

0 – 15

5

 

 

 

Notes: 1. Step-down operation: Motor may have reduced brush life. Consult motor manufacturer.

2. Requires an isolated signal. If a non-isolated signal is used, install the Signal Isolator SIRC (P/N 8842).

TABLE 2 – ELECTRICAL RATINGS

AC Line Input Voltage

Maximum AC Line

Nominal Output

Maximum Output

Maximum

(±10%, 50/60 Hz)

Input Current

Voltage

 

Load Current

Horsepower Rating

(Single Phase Volts AC)

(Amps AC)

(Volts DC)

 

(Amps DC)

HP, (kW)

115

15

0 – ±90

 

11

1, (0.75)

 

 

 

 

 

 

208/230

15

0 – ±180

 

11

2, (1.5)

 

 

 

 

 

 

208/230

15

0 – ±901

 

11

1, (0.75)

 

 

 

 

 

 

Note: 1. Step-down operation: Motor may have reduced brush life.

Consult motor manufacturer.

6

FIGURE 1 – CONTROL LAYOUT

(Illustrates Factory Setting of Jumpers and Approximate Trimpot Settings)

EN COM COM +15V -15V SIG RET START STOP

OFFSET RACC

FACC

 

MAX FWDCL REVCL

IR RESP DB

TCL T-

 

T+

RELAY

 

 

 

 

 

 

 

 

 

 

15V

 

TB3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J10

NO

 

STOP

 

 

 

 

 

 

 

 

 

 

 

J5

NC

ON

CL

 

 

 

 

 

 

 

 

 

 

 

 

 

LED BOARD

 

 

 

 

 

 

 

 

 

 

 

 

Y

 

 

 

 

 

 

 

 

10V

 

 

 

G

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

TCL J8

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRQ SPD

 

 

 

NTCL

 

 

 

 

 

 

 

 

 

 

 

 

CON1

 

 

 

 

 

 

1.7A

2.5A

5A

7.5A

10A

J6

 

 

 

 

 

 

 

 

 

 

 

 

S/L

OL

PWR ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REV

 

 

 

 

 

 

 

 

J4

 

 

 

 

 

 

EN

 

 

 

 

 

 

 

 

 

 

A180

 

 

NL

FWD

 

 

 

 

 

 

 

 

 

 

A90

T7

T50

EN

 

 

 

 

 

 

 

 

 

 

J7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RTS

 

 

 

 

 

 

EN

 

 

 

 

 

 

 

 

J9

 

 

 

 

 

 

 

J11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J2

 

 

J1

 

 

 

 

 

 

 

 

 

 

 

 

115V 230V

230V

115V

KBRC

TB1

F2

 

F1

TB2

F+ F-

M1

M2

L1

L2

L2A L2B L1A L1B

FIGURE 2 – ENLARGED VIEW OF TRIMPOTS

OFFSET RACC FACC MAX FWDCL REVCL IR RESP DB

TCL

7

8

5.886

 

RECOMMENDED MOUNTING SCREW: 1/4" (M6)

[149.50]

 

 

 

5.472

 

5.000

[138.99]

 

[127.00]

0.357

 

 

[9.07]

 

 

ON

STOP

OL

TM

 

 

PENTA-DRIVE

 

 

 

REGENERATIVE

 

 

 

DC MOTOR SPEED CONTROL

 

 

40

50

60

 

 

 

 

 

30

 

70

 

 

20

 

80

 

 

10

 

90

9.488

8.226

0

%

100

[241.00] [208.94]

FWD

8.876

[225.45] REV

NEMA-4X / IP-65

START AUTO

STOP MANUAL

KBRC-240D SHOWN WITH OPTIONAL

FORWARD-BRAKE-REVERSE AND AUTO/MANUAL SWITCHES

[mm]) / (Inches SPECIFICATIONS MECHANICAL – 3 FIGURE

STANDARD FEATURES

A.Short Circuit Protection – Protects the control from a short circuit at motor connections.

B.Electronic Motor Burnout Protection (I X t) – Shuts down the control if a prolonged overload condition exists.

C.Start/Stop Switch – Provides electronic start/stop function.

D.Diagnostic LEDs – For power on (ON), stop (STOP) and motor overload (OL).

E.Selectable Jumpers – Provide settings for AC line input voltage (J1 and J2), armature voltage or tach-generator feedback (J3), motor current (J4), analog input voltage (J5), control mode (J6), torque mode (J7), current limit mode (J8), stopping mode (J9), run relay output contacts (J10) and enable (J11). See Section III, on page 14.

F.Trimpots – Provide adjustment for offset (OFFSET), forward acceleration (FACC), reverse acceleration (RACC), maximum speed (MAX), forward current limit (FWDCL), reverse current limit (REVCL), IR compensation (IR), response (RESP), deadband (DB) and timed current limit (TCL). See Section VIII, on page 19.

G.Barrier Terminal Blocks – Facilitate wiring of AC line, motor armature and field, tachgenerator and run relay output.

H.Quick-Connect Terminals – Facilitate connecting the Forward-Stop-Reverse Switch, Power On/Off Switch, Start/Stop Switch, Auto/Manual Switch and Enable Switch.

II.WIRING INSTRUCTIONS

Warning! Read Safety Warning, on page 5, 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 signal following, Start/Stop Switch, Enable, or any other signal wires. Use shielded cables on all signal wiring over 12” (30cm). The 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 Figure 4, on page 10, Table 3 and Table 4, on page 11.

Be sure to properly fuse each conductor that is not at ground potential. Do not fuse neutral or grounded conductors. See Section VII, on page 18. 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 9486) 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 connectors 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.

TABLE 3 – TERMINAL BLOCK WIRING INFORMATION

Terminal

 

 

Supply Wire Gauge (AWG-Cu)

Maximum

Designation

Connections

 

 

Tightening Torque

Block

 

 

Minimum

Maximum

(in-lbs)

 

 

 

TB1

AC Line Input

L1 and L2

22

12

12

 

 

 

 

 

 

TB1

Motor Armature

M1 and M2

22

12

12

 

 

 

 

 

 

TB2

Motor Field (Shunt

F1 and F2

24

14

3.5

Wound Motors Only)

 

 

 

 

 

 

 

 

 

 

 

TB3

Tach-Generator

T+ and T-

24

14

3.5

 

 

 

 

 

 

TB3

Run Relay

RELAY

24

14

3.5

 

 

 

 

 

 

9

FIGURE 4 – POWER CONNECTIONS

Warning! Do not wire switches or relays in series with the armature. Armature switch- ! ing can cause catastrophic failure of motor and/or control. To avoid erratic operation, do not bundle AC line and motor wires with potentiometer wires, voltage following wires, Start/Stop Switch wires, enable wires, or any other signal wires. Use shielded cables on all signal wiring over 12” (30cm) long. The shield should be earth grounded on the control side

only.

The KBRC-240D 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 and make sure that wires will 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.

A. AC Line Connection – Wire the AC

TB1

 

 

line to L1 and L2 terminals of

TB2

 

 

Terminal Block TB1, as shown in

 

 

 

 

 

Figure 4.

F+ F- M1 M2

L1 L2

 

B. Ground Connection – Earth ground

+

 

 

 

 

 

the control chassis using the green

M

 

 

ground screw that is provided on the

-

 

 

inside of the control to the right side

 

 

MOTOR

AC LINE

GROUND

of Terminal Block TB1, as shown in

(EARTH)

 

 

 

Figure 4.

 

 

 

C.Permanent Magnet (PM) Motor Connection – Wire the motor armature leads to M1 and M2 terminals of Terminal Block TB1, as shown in Figure 4. Be sure Jumper J3 is set to the corresponding motor voltage and Jumper J4 is set to the corresponding motor current.

For step-down operation (230 Volt AC line input with 90 Volt DC SCR rated motors) set Jumper J3 to the “90V” position. However, in step-down operation the motor may have reduced brush life - consult motor manufacturer. Note: If the motor runs in the opposite direction than is desired, disconnect power and reverse the motor leads.

Note: Do not connect motor armature leads to F+ and F- terminals of Terminal Block TB2 or to F1 and F2 quick-connect terminals. Do not use F1 and F2 quick-connect terminals for any purpose other than to power the optional Signal Isolator SIRC (P/N 8842).

FIGURE 5 – FULL VOLTAGE FIELD CONNECTION

(Shunt Wound Motors Only)

TB1

TB2

F+ F-

M1 M2

L1

L2

++

FIELD

M

 

 

(SHUNT MOTORS

 

 

ONLY)

-

 

 

 

 

 

-

 

AC LINE

GROUND

MOTOR

(EARTH)

FIGURE 6 – HALF VOLTAGE FIELD CONNECTION

(Shunt Wound Motors Only)

TB1

TB2

F+

F- M1 M2

L1 L2

++

FIELD

M

 

 

(SHUNT MOTORS

 

 

 

ONLY)

-

 

 

 

 

 

-

MOTOR

AC LINE

GROUND

(EARTH)

D.Full Voltage Field Connection (Shunt Wound Motors Only) – Wire the motor field leads to F+ and F- terminals of Terminal Block TB2, as shown in Figure 5 and as described in Table 4, on page 11.

10

Note: Do not connect motor armature leads to F1 and F2 quick-connect terminals. Do not use F+ and F- terminals of Terminal Block TB2 for any purpose other than to power the field of a shunt wound motor.

E.Half Voltage Field Connection (Shunt Wound Motors Only) – Wire the motor field leads to F+ terminal of Terminal Block TB2 and L1 terminal of Terminal Block TB1, as shown in Figure 6, on page 10 and as described in Table 4.

Note: Do not connect motor armature leads to F+ and F- terminal of Terminal Block TB2 or to F1 and F2 quick-connect terminals. Do not use F+ and F- terminals of Terminal Block TB2 for any purpose other than to power the field of a shunt wound motor.

TABLE 4 – FIELD CONNECTION (SHUNT WOUND MOTORS ONLY)

AC Line Voltage

Armature Voltage

Field Voltage

Field Connections

(Volts AC)

(Volts DC)

(Volts DC)

 

 

 

 

 

115

0 – ±90

100

F+ and F-

 

 

 

 

115

0 – ±90

50

F+ and L1

 

 

 

 

208/230

0 – ±180

200

F+ and F-

 

 

 

 

208/230

0 – ±180

100

F+ and L1

 

 

 

 

208/230

0 – ±90

100

F+ and L1

 

 

 

 

F.Remote Main Speed Potentiometer Connection – The control is supplied with a prewired Main Speed Potentiometer mounted on the front cover for unidirectional forward operation of the motor as shown in Figure 7.

To rewire the Main Speed Potentiometer for a different direction or to operate the control from a remote potentiometer (5k), remove the white, orange and violet potentiometer leads from P1, P2 and P3 terminals and connect it as described below. 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.

1.

Unidirectional Forward

 

 

FIGURE 7 – UNIDIRECTIONAL FORWARD

 

Operation – Connect the Main

MAIN SPEED POTENTIOMETER CONNECTION

 

Speed Potentiometer high side

 

 

 

to +15V terminal, wiper to SIG

LOW (WHITE)

 

 

terminal and low side to COM

WIPER (ORANGE)

SIG

 

terminal, as shown in Figure 7.

HIGH (VIOLET)

-15V

 

Rotating

the

Main

Speed

 

+15V

 

Potentiometer

clockwise

will

MAIN SPEED

 

COM

 

increase motor speed in the for-

POTENTIOMETER

 

(BACK VIEW)

 

 

ward

direction.

Rotating

the

 

 

 

Main

Speed

Potentiometer

 

 

 

counterclockwise will decrease motor speed. Note: Jumper J5 must be set to the

 

“15V” position.

 

 

 

 

 

2. Unidirectional Reverse

 

 

FIGURE 8 – UNIDIRECTIONAL REVERSE

Operation – Connect the Main

MAIN SPEED POTENTIOMETER CONNECTION

Speed Potentiometer high side

 

 

to -15V terminal, wiper to SIG

LOW (WHITE)

 

terminal and low side to COM

 

WIPER (ORANGE)

SIG

terminal, as shown in Figure 8.

 

HIGH (VIOLET)

-15V

Rotating the

Main

Speed

 

+15V

Potentiometer

clockwise

will

MAIN SPEED

COM

increase motor

speed

in

the

POTENTIOMETER

(BACK VIEW)

 

reverse direction.

Rotating the

 

 

 

Main Speed

Potentiometer

 

 

counterclockwise will decrease motor speed. Note: Jumper J5 must be set to the “15V” position.

11

RET START STOP
FIGURE 12 – START/STOP FUNCTION ELIMINATED (JUMPER INSTALLED)
FWD
FORWARD-STOP-REVERSE
SWITCH
MAIN SPEED
POTENTIOMETER
(BACK VIEW)
STOP
REV
HIGH (VIOLET)
WIPER (ORANGE)
FIGURE 10 – BIDIRECTIONAL MAIN SPEED POTENTIOMETER CONNECTION WITH REVERSING CONTACTS
LOW (WHITE)
COM
+15V
-15V
SIG
COM
MAIN SPEED
POTENTIOMETER
(BACK VIEW)
+15V
HIGH (VIOLET)
-15V
WIPER (ORANGE)
SIG
FIGURE 9 – BIDIRECTIONAL MAIN SPEED
POTENTIOMETER CONNECTION
LOW (WHITE)

3. Bidirectional Operation –

Provides forward and reverse operation using the Main Speed Potentiometer. Connect the

Main Speed Potentiometer high side to +15V terminal, wiper to

SIG terminal and low side to -15V terminal, as shown in

Figure 9. Zero motor speed will now be located at 50% rotation.

Rotating the Main Speed Potentiometer clockwise will increase motor speed in the forward direction. Rotating the Main Speed Potentiometer counterclockwise will increase motor speed in the reverse direction. Note: Jumper J5 must be set to the “15V” position.

Note: If the motor runs in the opposite direction than is desired, disconnect power and either reverse the high side and low side of the Main Speed Potentiometer wires or reverse the motor leads to M1 and M2 terminals of Terminal Block TB1.

4. Bidirectional Operation with Reversing Contacts –

Connect the Main

Speed Potentiometer high side to the center of the switch (type ON-

OFF-ON, SPDT switch with center off position), wiper to SIG terminal and low side to COM terminal. Connect the

“forward” side of the switch to the +15V terminal and the “reverse”

side of the switch to the -15V terminal, as shown in Figure 10. Rotating the Main Speed Potentiometer clockwise will increase motor speed in the direction selected by the switch. Rotating the Main Speed Potentiometer counterclockwise will decrease motor speed. Note: Jumper J5 must be set to the “15V” position.

G.Remote Start/Stop Switch Connection – 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 START, RET 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 START (momentary), RET (common) and STOP (constant) terminals, as shown in Figure 11. After applying power, momentarily set the Start/Stop Switch to the “START” position. The motor will run at the set speed of the Main Speed Potentiometer. To stop the motor, set the Start/Stop Switch to the “STOP” position.

Note: To eliminate the Start/Stop function, connect START and RET terminals with the jumper that is provided, as shown in Figure 12.

!using a jumper will cause the motor to run at theCAUTION! Eliminating the Start/Stop function

Main Speed Potentiometer setting when the AC line is applied.

FIGURE 11 – REMOTE START/STOP SWITCH CONNECTION

START/STOP SWITCH

RED

STOP

BLACK

WHITE

START

RET START STOP

12

H.Run Relay Connection – Normally open (NO) or normally closed (NC) relay output contacts are available at Terminal Block TB3, which change state when the Start/Stop Switch is set to the “START” position. The contacts will return to their original (“normal”) state when the control is set to the STOP Mode, the AC line is disconnected or times out in Timed Current Limit due to a motor overload.

TABLE 5 – RUN RELAY OUTPUT CONTACTS

MODE

JUMPER J10

RUN RELAY

POSITION

CONTACTS

 

 

 

 

Run

NO

Closed

 

 

NC

Open

 

 

 

 

Stop

NO

Open

 

 

NC

Closed

 

 

 

 

TCL

NO

Open

 

 

NC

Closed

 

 

 

 

The Run Relay contacts are rated 1 Amp at 30 Volts DC and 0.5 Amp at 125 Volts AC.

Normally open or normally closed run relay output contacts can be selected depending on the position of Jumper J10. The control is factory set with Jumper J10 set to the “NO” position. If normally closed run relay contacts are required in the STOP Mode, set Jumper J10 to the “NC” position. See Table 5.

If normally open is selected (Jumper J10 set to the “NO” position), the run relay output contacts open when the control is in the STOP Mode and close when the control is started. If normally closed is selected (Jumper J10 set to the “NC” position), the run relay output contacts will close when the control is in the STOP Mode and open when the control is started.

Note: If relay output contacts are not required for your application, Jumper J10 may be set to any position.

I. Voltage Following Connection – An isolat-

FIGURE 13 – VOLTAGE FOLLOWING

ed 0 - 10 Volt DC or 0 - 15 Volt DC analog sig-

 

CONNECTION

nal voltage can also be used to control motor

 

 

 

 

 

 

 

 

 

0 – ±10V or ±15V DC

speed. See Figure 13. Note: Jumper J5

must be set to the “10V” position if using a 0 -

 

(ISOLATED)

 

 

 

 

 

 

 

SIG

 

 

 

 

 

 

±10 Volt DC analog signal voltage or to the

 

 

 

 

 

 

 

 

 

 

COM

 

SIG

-15V

“15V” position if using a 0 - ±15 Volt DC ana-

 

 

 

 

 

 

 

 

+15V

 

 

 

 

log signal voltage.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM

 

 

 

Note: If an isolated signal voltage is not avail-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

able, install the optional Signal Isolator SIRC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(P/N 8842). Connect the isolated signal voltage to SIG (signal) and COM (-) terminals. Adjustment of the MIN trimpot may be necessary to achieve a 0 Volt DC output with a 0 Volt DC input.

J. Enable Circuit Connection – The control can

FIGURE 14 – ENABLE CIRCUIT

also be started and stopped with an Enable

CONNECTION

 

Circuit (close to start). See Figure 14. The

 

 

 

 

 

 

Enable function is established by wiring a

ENABLE

 

switch in series with the EN and COM termi-

SWITCH OR RELAY

 

(CLOSE TO START)

 

COM

nals. When the Enable switch is closed, the

 

 

 

control will accelerate to the Main Speed

 

 

EN

Potentiometer setting. When the Enable

 

 

 

Switch is opened, the control will either

 

 

 

 

 

 

Regenerate-to-Stop or Coast-to-Stop, depending on the setting of Jumper J9, as described in Section IIII, on page 16. Jumper J11 must be removed in order for the Enable Circuit to operate.

!this purpose.

K.DC Tach-Generator Connection – Wire the tach-generator to T+ and T- terminals of Terminal Block TB3, as shown in Figure 15, on page 14. Jumper J3 must be set to the

“7V” position for 7 Volt per 1000 RPM tach-generators or to the “50V” position for 50 Volt per 1000 RPM tach-generators. The tach-generator polarity must match the polarity ofWarning! Do not use Enable as a safety disconnect. Use only the AC line for

13

the motor armature voltage. If the tach-generator polarity is reversed, the motor will accelerate to full speed and the Main Speed Potentiometer will not control speed. Tachgenerator feedback can greatly improve speed regulation and dynamic response.

Note: When using a tach-generator, the IR trimpot should be set fully counterclockwise.

Note: The tach-generator input is designed for 7 Volt or 50 Volt per 1000 RPM tach-gen- erators used with 1800 RPM motors. For a tach-generator other than 7 Volt or 50 Volt per 1000 RPM or for motors other than 1800 RPM, an external 1/2 Watt resistor (RT)

must be installed. Install RT in series with the tach-generator, as shown in Figure 16. Jumper J3 must be set to the “7V” position.

FIGURE 15 – DC TACH-GENERATOR

CONNECTION

T- T+ RELAY

TB3

+

G DC TACH-GENERATOR

-

FIGURE 16 – DC TACH-GENERATOR CONNECTION WITH ADDITION OF RT

T- T+ RELAY

TB3 + RT G DC TACH-GENERATOR -

The value of RT in Ω can be calculated using the following formula:

RT = (4.37 X VT X S) - 55000 Where VT is the tach-generator voltage (in Volts per 1000 RPM) and S is the base speed of the motor (in RPM).

Example:

Suppose you have a 20 Volt per 1000 RPM tach-generator with a 3600 RPM motor.

RT = (4.37 X 20 X 3600) - 55000 = 259640

Choose the closest 1/2 Watt resistor value, which is 240000 (240k) or 270000 (270k). Readjustment of the MAX trimpot may be necessary to achieve the desired maximum output voltage.

III.SETTING SELECTABLE JUMPERS

The KBRC-240D has selectable jumpers which must be set before the control can be used. See Figure 1, on page 7, for location of jumpers.

A. AC Line Input

 

 

FIGURE 17 – AC LINE INPUT VOLTAGE SELECTION

Voltage

Control Set for 208/230 Volt AC Line Input

Control Set for 115 Volt AC Line Input

Selection (J1

 

 

 

(Factory Setting)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and J2) –

J1 Set for 208/230

J2 Set for 208/230

 

 

J1 Set for 115

 

 

 

 

J2 Set for 115

Jumpers J1

 

 

 

 

 

 

Volt AC Line

Volt AC Line

 

 

Volt AC Line

 

 

 

 

Volt Ac Line

and J2 are

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J1

 

 

 

 

 

 

 

 

 

 

 

 

 

J1

 

 

 

 

 

 

 

 

 

 

both factory

 

 

 

 

J2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

set to the

230V 115V

115V 230V

 

 

230V 115V

 

 

 

 

 

115V 230V

“230V” position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

for 208/230

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Volt AC line input. For 115 Volt AC line

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

input, set both Jumpers J1 and J2 to the

 

 

 

FIGURE 18 – MOTOR VOLTAGE

“115V” position. See Figure 17.

 

 

 

 

 

 

 

 

 

 

SELECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B. Motor Voltage Selection (J3) – Jumper

J3 Set for 180 Volt Motor

 

J3 Set for 90 Volt Motor

 

 

(Factory Setting)

 

J3 is factory set to the “A180” position for

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

180 Volt motors. For 90 Volt motors, set

 

 

 

A90

A180

T7

T50

 

 

 

A90

A180

T7

T50

Jumper J3 to the “A90” position. See

 

 

 

 

 

 

Figure 18.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J3

 

 

 

 

 

 

 

 

 

J3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

Note: If Jumper J3 is set to the “T7” or “T50” position, a tach-generator must be wired to Terminal Block TB3. If a tachgenerator is not used, Jumper J3 must be in either the “A180” or “A90” position. If jumper J3 is in the “T7” or “T50” position, and a tach-gener- ator is not used, the motor will accelerate to full speed and the Main Speed Potentiometer will not control speed.

C.DC Tach-Generator Voltage Selection (J3) – Jumper J3 is factory set to the “A180” position for 180 Volt motors. When connecting a tach-generator to Terminal Block TB3, set Jumper J3 to the corresponding voltage of the tach-gener- ator being used. See Figure 19.

Note: If using a tach-generator other than 7V or 50V per 1000 RPM, see Section IIIK, on page 13.

FIGURE 19 – DC TACH-GENERATOR

VOLTAGE SELECTION

J3 Set for 7V per 1000

J3 Set for 50V per 1000

RPM Tach-Generator

RPM Tach-Generator

 

 

 

 

 

 

 

 

 

 

 

 

 

A90

A180

T7

T50

 

A90

A180

T7

T50

 

 

 

 

 

J3

 

 

 

 

 

J3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D.Motor Current Selection (J4) – Jumper J4 is factory set to the “10A” position for 10 Amp motors. For lower current motors, set Jumper J2 to the corresponding current of the motor being used. See Figure 20 and Table 6.

FIGURE 20 – MOTOR CURRENT SELECTION

 

 

J4 Set for

 

 

 

J4 Set for

 

 

 

J4 Set for

 

 

 

J4 Set for

 

 

 

 

J4 Set for

 

 

10 Amp Motor

 

 

 

 

 

 

 

 

 

 

 

 

 

7.5 Amp Motor

 

5 Amp Motor

2.5 Amp Motor

1.7 Amp Motor

(Factory Setting)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.7A

2.5A

5A

7.5A

10A

1.7A

2.5A

5A

7.5A

10A

 

1.7A

2.5A

5A

7.5A

10A

 

1.7A

2.5A

5A

7.5A

10A

 

1.7A

2.5A

5A

7.5A

10A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J4

J4

J4

J4

J4

TABLE 6 – SETTING MOTOR CURRENT

J4 Setting (Amps DC)

SCR Rated Motor Horsepower – HP, (kW)

90 Volt DC Motors

180 Volt DC Motors

 

1.7

1/6, (0.1)

1/3, (0.25)

 

 

 

2.5

1/4, (0.18)

1/2, (0.37)

 

 

 

5.0

1/2, (0.37)

1, (0.75)

 

 

 

7.5

3/4, (0.5)

112, (1)

 

 

 

10

1, (0.75)

2, (1.5)

 

 

 

E.Analog Input Signal Voltage Selection (J5) – Jumper J5 is factory set to the “15V” position for use with a potentiometer to control motor speed. To control motor speed using a 0 - ±10 Volt DC isolated analog signal voltage set Jumper J5 to the “10V” position. To control motor speed using a 0 - ±15 Volt DC isolated analog signal voltage, set Jumper J5 to the “15V” position. See Figure 21.

FIGURE 21 – ANALOG INPUT SIGNAL

VOLTAGE SELECTION

J5 Set for

0 – ±15 Volt Input Signal

J5 Set for

(Factory Setting)

0 – ±10 Volt Input Signal

15V

15V

 

 

J5

 

 

J5

 

 

 

 

 

 

 

 

 

 

 

 

 

10V

 

10V

 

Note: Connect the isolated signal voltage

to SIG (signal) and COM (-) terminals. If an isolated analog signal voltage is not available, install the optional Signal Isolator SIRC (P/N 8842).

15

F.Control Mode Selection (J6) – Jumper J6 is factory set to the “SPD” position for Speed Control Mode . For Torque Control Mode, set Jumper J6 to the “TRQ” position. See Figure 22.

G.Torque Control Mode Selection (J7) –

Jumper J7 is factory set to the “S/L” position for Speed Mode and Linear Torque Mode. For Non-Linear Torque Mode, set Jumper J7 to the “NL” position. See Figure 23. (See Section VI, on page 18.)

H.Current Limit Mode Selection (J8) –

Jumper J8 is factory set to the “TCL” position for Timed Current Limit operation. For Non-Timed Current Limit operation, set Jumper J8 to the “NTCL” position. See Figure 24.

TCL (Timed Current Limit) – When Jumper J8 is set to the “TCL” position, the control will go into Stop Mode after it is in overload for a predetermined amount of time (set by the TCL trimpot).

Resetting the Control after TCL – To reset the control after it has gone into TCL, set the Start/Stop Switch to the “STOP” position and then momentarily to the “START” position or disconnect and reconnect the AC line. If the Start/Stop Switch is jumpered (START and RET terminals connected), the control must be restarted by disconnecting and reconnecting the AC line. If the Power On/Off Switch is installed, set it to the “OFF” position and then back to the “ON” position.

Warning! When the control ! shuts down in TCL, the AC line voltage is still present in the control.

NTCL (Non-Timed Current Limit) –

When Jumper J8 is set to the “NTCL” position, the control will not go into Stop Mode after it is in overload.

FIGURE 22 – CONTROL MODE

SELECTION

J6 Set for

Speed Control Mode

J6 Set for

(Factory Setting)

Torque Control Mode

TRQ SPD

TRQ SPD

 

 

 

 

J6

 

 

 

 

 

J6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIGURE 23 – TORQUE MODE

SELECTION

J7 Set for

 

 

 

Speed Mode and

J7 Set for

Linear Torque Mode

Non-Linear Torque Mode

(Factory Setting)

 

 

 

 

S/L

 

S/L

 

 

 

 

 

 

 

NL

 

 

NL

 

 

J7

 

J7

 

 

 

 

 

 

FIGURE 24 – CURRENT LIMIT MODE

SELECTION

J8 Set for

Timed Current Limit

J8 Set for

(Factory Setting)

Non-Timed Current Limit

 

TCL J8

TCL J8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NTCL

 

NTCL

FIGURE 25 – STOP MODE

SELECTION

J9 Set for

J9 Set for

Regenerate-to-Stop Mode

Coast-to-Stop Mode

(Factory Setting)

 

 

 

 

 

RTS

RTS

CTS

 

 

 

J9

CTS

 

 

 

J9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: The TCL trimpot will have no affect

FIGURE 26 – RUN RELAY OUTPUT

when Jumper J8 is in the “NTCL” position.

 

MODE SELECTION

 

 

 

 

 

 

 

 

 

 

I. Stop Mode Selection (J9) – Jumper J9 is

J10 Set for

J10 Set for

Normally Open Run

factory set to the “RTS”

position, for

Normally closed Run

Relay Output Contacts

Regenerate-to-Stop Mode.

For Coast-to-

Relay Output Contacts

(Factory Setting)

 

 

 

Stop Mode, set Jumper J9 to the “CTS”

 

 

J10

 

J10

 

position. See Figure 25.

 

 

 

 

NO

 

 

NC

 

NO

NC

 

 

 

 

 

 

J.Run Relay Output Mode Selection (J10) – Jumper J10 is factory set to the

“NO” position for normally open relay output contacts at Terminal Block TB3. For normally closed relay output contacts, set Jumper J10 to the “NC” position. See Figure 26.

16

K.Enable Jumper (J11) – Jumper J11 is factory installed to enable the control. If installing the Enable Circuit, as described in Section IIJ, on page 13, remove Jumper J11. See Figure 27.

IV. MOUNTING INSTRUCTIONS

FIGURE 27 – ENABLE JUMPER

J11 Installed for

Auto-Enable

J11 Not installed for

(Factory Setting)

Manual Enable

EN

 

 

 

J11

EN

 

J11

 

 

 

 

 

 

 

 

 

 

!Warning!cation. The KBRC-240D is not designed to be used in an explosion-proof appli-

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 8.

V.RECOMMENDED HIGH VOLTAGE DIELECTRIC WITHSTAND TESTING (Hi-Pot Testing)

Testing agencies such as UL, CSA, VDE, etc., usually require that equipment undergo a hipot 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 28 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.

FIGURE 28 – HI-POT TEST SETUP

HIGH VOLTAGE DIELECTRIC WITHSTAND TESTER

(HI-POT TESTER)

 

 

 

1

2

LEAKAGE

0

 

3

 

 

 

AC KILOVOLTS

0mA

10mA

 

 

 

RETURN

TEST

 

VOLTAGE

H. V.

RESET

 

 

 

 

 

CONNECT ALL SPEED CONTROL

ZERO

MAX

TERMINALS TOGETHER

(MAIN POWER DISCONNECTED)

 

 

MOTOR SPEED CONTROL

AC LINE INPUT

 

 

L1

 

 

 

 

L2

MOTOR

MOTOR WIRES

 

 

TERMINALS

CONNECT HI-POT

 

 

 

SIGNAL INPUTS

 

TO BOTH

 

FRAME

AC LINE INPUTS

AUXILIARY EQUIPMENT

 

 

SIG

 

 

 

 

 

 

 

L1

-15V

 

 

 

L2

+15V

 

 

 

CHASSIS

COM

 

CHASSIS

MACHINE OR EQUIPMENT FRAME

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 procedure must be followed for each machine tested. A suggested hi-pot tester is Slaughter Model 2550.

! WARNING! Instantaneously applying the hi-pot voltage will cause irreversible damage to the speed control.

17

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. OPERATION

After the KBRC-240D has been properly setup (jumpers set to desired positions and wiring completed), the startup procedure can begin. If AC power has been properly brought to the control, the ON and STOP LEDs will be illuminated. Before starting, be sure that the Main Speed Potentiometer is set to the zero speed position. To start the control, momentarily set the Start/Stop Switch to the “START” position. The STOP LED should no longer illuminate. The motor should begin to run as the Main Speed Potentiometer is rotated.

Note: If the motor runs in the incorrect direction, it will be necessary to disconnect the AC line, reverse the motor leads and repeat the startup procedure.

TABLE 7 – CONTROL OPERATION

Quadrant

Type of Operation

Motor Rotation

Motor Torque

Load Torque

Direction

Direction

Direction

 

 

 

 

 

 

 

I

Motoring

CW

CW

CCW

 

 

 

 

 

II

Regeneration

CCW

CW

CCW

 

 

 

 

 

III

Motoring

CCW

CCW

CW

 

 

 

 

 

IV

Regeneration

CW

CCW

CW

 

 

 

 

 

Linear Torque Mode:

In Linear Torque mode (Jumper J7 set to the “S/L” position), speed and torque vary linearly as a function of Main Speed Potentiometer rotation or input signal. See Figure 29.

Non-Linear Torque Mode:

In Non-Linear Torque mode (Jumper J7 set to the “NL” position), the torque is varied by the Main Speed Potentiometer or input signal, and remains constant throughout the motor’s entire speed range. See Figure 30.

FIGURE 29 – LINEAR TORQUE MODE

 

100

 

 

 

 

 

 

 

 

 

 

 

90

 

 

 

 

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

 

 

 

70

 

 

 

 

 

 

 

 

 

 

SPEED

60

 

 

 

 

HIGHER

 

 

 

 

 

 

 

 

TORQUE

 

 

 

 

BASE

 

 

 

 

 

SETTING

 

 

 

 

50

 

 

 

 

 

 

 

 

 

 

OF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PERCENT

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

10

LOWER

 

 

 

 

 

 

 

 

 

 

 

TORQUE

 

 

 

 

 

 

 

 

 

 

0

SETTING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

10

20

30

40

50

60

70

80

90

100

 

 

 

 

 

PERCENT OF TORQUE

 

 

 

 

FIGURE 30 – NON-LINEAR TORQUE MODE

 

100

 

 

 

 

 

 

 

 

 

 

 

90

 

 

 

 

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

 

 

 

70

 

 

 

 

 

 

 

 

 

 

SPEED

60

LOWER

 

 

 

 

 

 

HIGHER

 

BASE

 

 

 

 

 

 

 

 

 

TORQUE

 

 

 

 

 

 

TORQUE

 

50

SETTING

 

 

 

 

 

 

SETTING

 

OF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PERCENT

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

0

10

20

30

40

50

60

70

80

90

100

 

 

 

 

 

PERCENT OF TORQUE

 

 

 

 

VII. AC LINE FUSING

The KBRC-240D 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.

18

VIII. TRIMPOT ADJUSTMENTS

 

 

 

 

 

 

 

FIGURE 31 – OFFSET

The KBRC-240D contains trimpots which are factory set for most

TRIMPOT RANGE

 

 

 

 

applications. Figure 2, on page 7, illustrates the location of the trim-

 

 

 

0

pots and their approximate calibrated positions.

Some applications

-5

 

 

+5

may require readjustment of the trimpots in order to tailor the control

 

 

 

 

for a specific requirement. Readjust trimpots as described below.

-10

 

 

+10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

!

Warning! If possible, do not adjust trimpots with the

PERCENT OF BASE SPEED

main power applied. If adjustments are made with

the

(SHOWN FACTORY SET TO 0%)

main power applied, an insulated adjustment tool must be used

 

 

 

 

and safety glasses must be worn. High voltage exists in this

 

 

 

 

control. Fire and/or electrocution

 

FIGURE 32 – OFFSET TRIMPOT ADJUSTMENT

can result if caution is not exer-

 

cised.

Safety Warning, on page

 

 

 

 

 

PERCENT OF BASE SPEED

 

 

 

 

 

5, must be read and understood

 

 

 

 

 

100

 

 

 

 

 

before proceeding.

 

 

 

 

 

 

 

 

 

 

 

 

 

A. Offset

(OFFSET) – Sets the

 

 

 

 

 

A

B

C

 

 

 

amount of bias in the forward or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

reverse direction. The OFFSET

 

 

 

 

 

10

 

 

 

 

 

trimpot is factory set for approx-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

imately

zero

offset,

which

 

 

 

 

 

 

 

 

 

 

PERCENT OF MAIN

means that neither the forward

 

 

 

 

 

 

 

 

 

SPEED POTENTIOMETER

 

-100

 

 

 

 

 

100

 

ROTATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nor reverse direction is favored.

 

 

 

 

 

-10

 

 

 

 

 

To offset the control in the for-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A - FORWARD OFFSET

 

 

 

ward direction, rotate the OFF-

 

 

 

 

 

 

 

 

 

 

A

B

 

 

C

B - ZERO OFFSET

 

 

 

SET trimpot clockwise. To off-

 

 

 

 

 

 

C - REVERSE OFFSET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

set

the

control

in the

reverse

 

 

 

 

 

 

 

 

 

 

 

direction, rotate

the OFFSET

 

 

 

 

 

-100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

trimpot counterclockwise. See

 

 

 

 

 

 

 

 

 

 

 

Figure 31 and Figure 32.

 

 

 

 

 

 

 

 

 

 

 

B. Forward Acceleration (FACC)

 

FIGURE 33 – FACC

 

FIGURE 34 – RACC

and

Reverse

Acceleration

 

 

TRIMPOT RANGE

 

TRIMPOT RANGE

(RACC) – Sets the amount of

 

 

 

7.5

 

 

 

 

7.5

 

time it takes the control voltage

 

 

5

 

 

10

 

5

 

 

10

to reach full output. The FACC

 

 

 

 

 

 

 

 

 

1

 

 

 

 

1

 

 

 

and RACC trimpots are factory

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.2

 

 

15

set to 1 second. See Figure 33,

 

 

0.2

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 34 and Figure 35.

 

 

SECONDS

 

 

SECONDS

The FACC trimpot sets the

(SHOWN FACTORY SET TO 1 SECOND)

(SHOWN FACTORY SET TO 1 SECOND)

 

 

 

 

 

 

 

 

 

 

 

amount of time it takes the con-

 

 

 

 

 

 

 

 

 

 

 

trol voltage to reach full output in the

 

 

 

FIGURE 35 – FACC AND RACC

forward

direction. It also sets

the

 

 

 

 

 

 

 

TRIMPOT ADJUSTMENT

 

amount of time it takes the control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

voltage, in the reverse direction, to

 

 

 

 

 

 

 

 

 

 

reach zero output (FACC also sets

 

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the reverse deceleration time). To

 

 

 

 

 

 

 

 

 

 

increase the forward

acceleration

 

 

 

ACCEL

REV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

time, rotate the FACC trimpot clock-

 

SPEED

FWD

ACCEL

 

 

 

 

 

 

 

 

 

 

 

 

 

wise.

To decrease

the forward

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

acceleration time, rotate the FACC

 

BASE

 

 

 

 

 

 

 

TIME

trimpot counterclockwise.

 

 

OF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PERCENT

 

 

 

 

 

 

 

 

The RACC trimpot sets the amount

 

 

 

 

 

REV

 

 

ACCEL

 

 

 

 

 

 

 

 

of time it takes the control voltage to

 

 

 

 

 

 

ACCEL

 

FWD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

reach full output in the reverse

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

direction. It also sets the amount of

 

-100

 

 

 

 

 

 

 

 

time it takes the control voltage, in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the forward direction, to reach zero

 

 

 

 

 

 

 

 

 

 

19

7.5, 15
FIGURE 39 – IR
TRIMPOT RANGE

output (RACC also sets the forward deceleration time). To increase the reverse acceleration time, rotate the RACC trimpot clockwise. To decrease the reverse acceleration time, rotate the RACC trimpot counterclockwise.

C. Maximum Speed (MAX) – Sets maximum speed of the motor.

 

FIGURE 36 – MAX

The MAX trimpot is factory set for 100% of base motor speed.

 

TRIMPOT RANGE

For a higher maximum speed setting, rotate the MAX trimpot

 

 

 

 

 

90

clockwise. For a lower maximum speed setting, rotate the MAX

 

80

100

trimpot counterclockwise. See Figure 36.

 

 

 

 

 

 

To Calibrate the MAX Trimpot:

 

 

70

110

1. Adjust the MAX trimpot to the desired position and set the

 

PERCENT OF BASE SPEED

Main Speed Potentiometer for full output voltage.

 

 

(SHOWN FACTORY SET TO 100%)

2. Monitor the armature voltage and readjust the MAX trimpot

 

 

 

 

 

 

to the desired voltage.

 

 

 

 

D. Forward Current Limit (FWDCL) and Reverse Current

 

FIGURE 37 – FWDCL

Limit (REVCL) – Sets the current limit (overload), which

 

 

TRIMPOT RANGE

 

 

 

 

limits the maximum current to the motor. The FWDCL and

 

 

 

100

REVCL trimpots are factory set for 150% of J4 range set-

 

50

150

ting. See Figure 37 and Figure 38.

 

 

 

 

The FACC trimpot sets the current limit in the forward direc-

 

0

200

tion. To increase the forward current limit, rotate the

PERCENT OF JUMPER J4 RANGE SETTING

FWDCL trimpot clockwise. To decrease the forward cur-

 

(SHOWN FACTORY SET TO 150%)

rent limit, rotate the FWDCL trimpot counterclockwise.

 

 

 

 

 

 

 

 

 

The RACC trimpot sets the current limit in the reverse

 

FIGURE 38 – REVCL

direction. To increase the reverse current limit, rotate the

 

 

 

TRIMPOT RANGE

REVCL trimpot clockwise. To decrease the reverse current

 

 

 

 

 

 

 

 

 

 

 

 

100

limit, rotate the REVCL trimpot counterclockwise.

 

 

 

 

 

 

 

 

 

CAUTION! Adjusting the FWDCL or REVCL above 150%

 

 

50

150

 

 

 

 

 

of motor rating can cause overheating and demagnetiza-

 

 

0

200

tion of some PM motors. Consult the motor manufacturer.

 

 

 

 

 

 

 

Do not leave the motor in a locked condition for more than

 

PERCENT OF JUMPER J4 RANGE SETTING

a few seconds since armature damage may occur.

 

 

(SHOWN FACTORY SET TO 150%)

To Calibrate the FWDCL or REVCL Trimpot:

1.Disconnect the AC power. Wire in a DC ammeter in series with either motor armature lead. Lock motor shaft. Be sure that Jumper J4 is set to the corresponding motor current position. Set Jumper J8 to the “NTCL” position.

2.Set the FWDCL trimpot (if in the forward direction) or the REVCL trimpot (if in the reverse direction) fully counterclockwise.

3.Apply power. Adjust the FWDCL trimpot (if in the forward direction) or the REVCL trimpot (if in the reverse direction) until the desired current limit (CL) setting is reached.

WARNING! Do not leave the motor shaft locked for more than 2 - 3 seconds or motor damage may result.

E.IR Compensation (IR) – Sets the amount of compensating voltage required to keep the motor speed constant under changing loads. The IR trimpot is factory set for 10 Volts (at 180 Volts DC output) and 5 Volts (at 90 Volts DC output). For higher compensating voltage, rotate the IR trimpot clockwise. For lower compensating voltage, rotate the IR trimpot counterclockwise. See Figure 39.

5, 10

10, 20

0

15, 30

VOLTS

(SHOWN FACTORY SET TO 10 VOLT

AT 180 VOLTS DC OUTPUT

AND 5 VOLTS AT 90 VOLTS DC OUTPUT)

20

Note: If the IR compensation is too high, unstable (oscillatory) operation will result. If the control is used with a DC tach-generator, the IR trimpot should be set fully counterclockwise.

To Calibrate the IR Trimpot:

1.Run the motor at approximately 30 - 50% of rated speed at no load and measure the actual speed.

2.Load the motor to the rated current. Adjust the IR trimpot so that the loaded speed is

the same as the unloaded speed measured in step 1.

F.Response (RESP): Sets the relative response of the control. The RESP trimpot is factory set to 50% rotation. For faster response, rotate the RESP trimpot clockwise. For slower response, rotate the RESP trimpot counterclockwise. See Figure 40. Note: If response is made too rapid, unstable, oscillatory operation may result.

G.Deadband (DB): Sets the amount of Main Speed Potentiometer rotation required to initiate control voltage output. The DEADBAND trimpot is factory set to 0.5% of base speed. For more deadband, rotate he DB trimpot clockwise. For less deadband, rotate the DB trimpot counterclockwise. See Figure 41 and Figure 42.

The DB trimpot also determines the amount of delay that will occur before regeneration begins. (Regeneration occurs when the applied load torque is in the same direction as the motor rotation.)

To Calibrate the DB Trimpot:

1.Set the Main Speed Potentiometer to the zero speed position.

FIGURE 40 – RESP TRIMPOT RANGE

50

SLOWER

FASTER

RELATIVE RESPONSE

(SHOWN FACTORY SET TO 50%)

FIGURE 41 – DB TRIMPOT RANGE

 

1.5

0.5

2.5

0

3

PERCENT OF BASE SPEED (SHOWN FACTORY SET TO 0.5%)

2.Set the DB trimpot fully counterclockwise.

3.Adjust the DB trimpot until motor hum is eliminated.

Note: If the DB trimpot is set too low (counterclockwise position), the motor may oscillate between forward and reverse directions. Adjust the DB trimpot clockwise until the instability disappears. (Oscillation may also occur due to the setting of the RESP trimpot. See Section VIIIF.)

FIGURE 42 – DB TRIMPOT ADJUSTMENT

PERCENT OF BASE SPEED

 

 

100

 

 

 

B

A

 

 

 

PERCENT OF MAIN

 

 

 

SPEED POTENTIOMETER

-100

-3

3

ROTATION

100

 

 

A - MAXIMUM DEADBAND

A

B

B - ZERO DEADBAND

 

 

-100

 

H.Timed Current Limit (TCL) – Sets the time for the control to shut down after being in current limit (provides electronic motor burnout protection). The TCL trimpot is factory set for 5 seconds. To increase the TCL setting, rotate the TCL trimpot clockwise. To decrease the TCL setting, rotate the TCL trimpot counterclockwise. If the control remains in CL for a predetermined amount of time (set by the TCL trimpot and if Jumper J8 is in the “TCL” position), the control will shut down.

FIGURE 43 – TCL

TRIMPOT RANGE

 

7.5

5

10

0

15

SECONDS

(SHOWN FACTORY SET TO 5 SECONDS)

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To reset the control after it has gone into TCL , momentarily set the Start/Stop switch to the “START” position or disconnect and reconnect the AC line. See Figure 43, on page 21.

Resetting the Control after TCL – To reset the control after it has gone into TCL, set the Start/Stop switch to the “STOP” position and then momentarily to the “START” position or disconnect and reconnect the AC line. If the Start Switch is jumpered (START and RET terminals connected) the control must be restarted by disconnecting and reconnecting the AC line. If the Power On/Off Switch is installed, set it to the “OFF” position and then back to the “ON” position.

To Calibrate the TCL Trimpot:

1.Run the motor at approximately 30 -50% of rated speed at no load.

2.With Jumper J8 set to the “TCL” position, set the TCL trimpot to the desired position and lock the motor shaft.

3.Monitor the time it takes for the control to shut down.

4.If the TCL time is not as desired, reset the control and repeat steps 1 - 3.

Warning! When the control shuts down in TCL, the AC line voltage is still present in the control.

Non-Timed Current Limit (NTCL) – When jumper J3 is set to the “NTCL” position and an overload condition exists, the control will remain in current limit and will not shut down.

IX. DIAGNOSTIC LEDs

The KBRC-240D is designed with LEDs mounted on the front cover to display the control’s operational status.

A.Power On (ON): The ON LED will illuminate green when the AC line is applied to the control.

B.Stop (STOP): The STOP LED will illuminate yellow when the Start/Stop switch is set to the “STOP” position. When the AC line is applied, this LED will also be illuminated until the Start/Stop switch is momentarily set to the “START” position.

C.Overload (OL): The OL LED will illuminate red when the control goes into current limit, indicating that the current limit set point has been reached (set by the CL trimpot and the position of jumper J4). This LED will remain illuminated if the control times out in TCL (Jumper J8 set to the “TCL” position).

The control can be reset by either setting the Start/Stop Switch to the “STOP” position and then momentarily to the “START” position or by disconnecting and reconnecting the AC line. If the overload condition still exists when the control is restarted or AC line reapplied, the OL LED will illuminate again. If the OL LED remains illuminated during normal control operation, a fault condition may exist. Possible causes for this condition are as follows.

1.Motor is overloaded. Check motor current. If the motor is a shunt wound type, the field may be open or not receiving proper voltage.

2.Motor may be defective. Check motor for shorts or grounds.

3.CL may be set too low. Check position of CL trimpot and setting of jumper J4.

Note: In some applications, especially those requiring the motor to cycle on and off or from one speed to another or from stop to high speed, the OL LED may blink, indicating a transient overload. This may be a normal condition for the application.

X.OPTIONAL ACCESSORIES

Complete instructions and connection diagrams are supplied with all accessories to facilitate installation.

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A.Forward-Stop-Reverse Switch (P/N 9485) – Provides motor reversing and regenerative braking. Mounts on the enclosure cover and is supplied with a switch seal to maintain watertight integrity.

B.Power On/Off Switch (P/N 9486) – Disconnects the AC line. Mounts on the enclosure cover and is supplied with a switch seal to maintain watertight integrity.

C.Signal Isolator SIRC (P/N 8842) – Provides isolation between a non-isolated signal voltage source and the KBRC-240D. Mounts on the inside of the enclosure cover.

D.Auto/Manual Switch (P/N 9487) – When used with the SIRC, it selects either an isolated signal from the SIRC or from the Main Speed Potentiometer. Mounts on the enclosure cover and is supplied with a switch seal to maintain watertight integrity.

E.KBRF-200 RFI Filter (P/N 9945) – Provides RFI and EMI suppression. Meets CE directives.

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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 guarantee, expressed or implied. KB Electronics, Inc. is not responsible for any expense, including installation and removal, inconvenience, or consequential damage, including injury to any person, 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)

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 – info@kbelectronics.com www.kbelectronics.com

(A40252) – Rev. B – 8/2003