Kb Electronics KBRG-213D User Manual

INSTALLATION AND OPERATING INSTRUCTIONS

REGENERATIVE DRIVE

MODEL KBRG-213D

KB Part No. 8826

VARIABLE SPEED SCR CONTROL

DESIGNED FOR SHUNT WOUND

and PM DC MOTORS

FULL WAVE • 4 QUADRANT

See Safety Warning on Page 1

The information contained in this manual is intended to be accurate. However, the manufacturer

See Page 1

retains the right to make changes in design which may not be included herein.

A COMPLETE LINE OF MOTOR DRIVES

TABLE OF CONTENTS

Section Page

i. Safety Warning .........................................................1

I. General Information .....................................................1

II. Operation .............................................................1

III. Setting Selectable Jumpers ...............................................2

IV. Mounting ..............................................................4

V. Wiring ................................................................4

VI. Fusing ................................................................8

VII. Trimpot Adjustments .....................................................8

VIII. Function Indicator Lamp .................................................10

IX. Limited Warranty .......................................................14

TABLES

1. Electrical Ratings .......................................................1

2. Summary of Control Operation .............................................2

3. General Performance Specifications .........................................2

4. Relationship of AC Line Input and Motor Voltage with J1, J2 and J3 Positions .........3

5. Jumper J4 Position vs Motor Horsepower .....................................3

6. Field Connections (Shunt Wound Motors Only) ................................4

7. Armature Fuse Chart ....................................................8

FIGURES

1. AC Line Voltage Jumper Setting ............................................3

2. Motor Armature Voltage Jumper Setting ......................................3

3. Jumper J5 Setting .......................................................3

4. AC Line and Armature Connection ..........................................4

5A. Full Voltage Field .......................................................4

5B. Half Voltage Field .......................................................4

6. Control Layout .........................................................5

7. Mechanical Specifications .................................................6

8. Unidirectional Operation (Forward) ..........................................7

9. Unidirectional Operation (Reverse) ..........................................7

10. Bidirectional Operation (Reversing Contact) ...................................7

11. Bidirectional Operation (Potentiometer) ......................................7

12. Voltage Following Connection ..............................................7

13. Regen to Stop ..........................................................8

14. Coast to Stop ..........................................................8

15. Accel Trimpot Adjustment .................................................9

16. Minimum Speed Trimpot Adjustment ........................................9

17. Deadband Trimpot Adjustment .............................................9

i. 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 overcurrent protection and grounding, can reduce the chance of electric 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 information is required on this product, contact our factory. It is the responsibility of the equipment manufacturer and individual installer to supply this safety warning to the ultimate user of this product. (SW effective 11/92)

This control contains electronic Start/Stop and Inhibit 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.

The input circuits of this control (potentiometer, start/stop, Inhibit) are not isolated from AC line.

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 instructions and Declaration of Conformity. Installation of a CE approved RFI filter (KBRF-200A, KB P/N 9945A or equivalent) is required. Additional shielded motor cable and/or AC line cables may be required along with a signal isolator (SI-4X, KB P/N 8801 or equivalent).

I. GENERAL INFORMATION.

The KBRG-213D is a full-wave regenerative control, capable of operating a DC motor (Permanent Magnet or Shunt) in a bidirectional mode. It provides 4-quadrant operation which allows forward and reverse torque in both speed directions. The drive provides dynamic response, which closely approximates the performance of servo-type drives. Ratings and specifications are presented in tables 1 and 3. Be sure the drive is used within these ratings and specifications. (Note: Regenerative drives normally produce more motor heating

than standard unidirectional SCR speed controls, especially under low speed operation. This should be taken into consideration when specifying motor rating.)

WARNING! Be sure to follow all instructions carefully. Fire or electrocution can result due to improper use of this product. Read Safety Warning.

TABLE 1 – ELECTRICAL RATINGS

Model

KBRG-213D

Input

Voltage

(VAC)

115 12 0 – ±90 7.5 3/4, (.5)

230 12 0 – ±180 7.5 1, (1)

Max. AC

Current

(RMS)

Output Voltage

(VDC)

Max. DC Output

Current (ADC)

Horsepower

HP, (KW)

II. OPERATION.

The KBRG will vary the motor speed as a function of the signal voltage on input terminals “S2" (signal) and “RB1” (common). The input voltage can be derived from the wiper of the main speed potentiometer or from an isolated analog input (voltage following mode). Since the KBRG is a 4-quadrant regenerative drive, the motor speed will follow both a positive and negative signal voltage and drive the motor in both the forward direction and reverse direction. In addition , it will apply both forward and reverse torque in order to stabilize motor speed.

Max.

To understand the concept of a regenerative drive, the operation of an elevator can be used. If one were to enter the elevator on the first floor and press 10, the motor and control would have to lift the elevator against gravity. In this mode, the drive would operate like a conventional speed control which is called “motoring” (the applied load is opposite to the direction of motor rotation). When the elevator is at floor 10 and floor 1 is pressed, gravity will try to pull the elevator car down faster than the speed for which it is set. The control will then provide reverse torque to keep the car form falling faster than the set speed. This operation is regeneration (the applied load is in the same direction as the direction of motor rotation).

The table below summarizes the different modes of regen operation.

TABLE 2 – SUMMARY OF CONTROL OPERATION

Quadrant

I Motoring CW CW CCW

II Regeneration CCW CW CCW

III Motoring CCW CCW CW

IV Regeneration CW CCW

Type of

Operation

Motor Rotation

Direction

Motor Torque

direction

Applied Load

Direction

TABLE 3 – GENERAL PERFORMANCE SPECIFICATIONS

Parameter Specification

AC Line Input Voltage (VAC ±10%,50/60 Hz) AC Line Frequency (Hz), # of Phases Arm Voltage Range at 115VAC Line (VDC) Arm Voltage Range at 230VAC Line (VDC) Field Voltage at 115VAC Line (VDC) Field Voltage at 230VAC Line (VDC) Service Factor Duty Max Load Capacity (% for 2 minutes) Ambient Temperature Range (ºC) Speed Range (Ratio) Arm Feedback Load Regulation (% Base Speed) Line Regulation (% Base Speed) Current Ranges (ADC) FWD and REV Accel Range (Sec.) Dead Band Range (% Base Speed) Max Speed Trimpot Range (% Base Speed) IR Comp Range at 115VAC Line (VDC) IR Comp Range at 230VAC Line (VDC) FWD and REV CL Range (% Range Setting) Voltage Following Input Range (VDC) Voltage Following Linearity (% Base Speed)

115 or 230 50/60, 1 0 – ±90 0 – ±180, 0 – ±90 100/50 200/100

1.0 Continuous 150 0 – 50 50:1 ±1 ±0.5

1.7, 2.5, 3.3 5.0, 7.5

0.1 – 15 0 – ±3 70 – 110 0 – 15 0 – 30 0 – 150 0 – ±10, 0 – ±15 ±0.5

Factory

Setting

230 — — 0 – ±180 — — — — — — — — —

7.5 1 0 100 5 10 150 0 – ±15 —

III. SETTING SELECTABLE JUMPERS.

The KBRG-213D has customer selectable jumpers which must be set before the control can be used (refer to fig. 1, p. 3). Bold indicates factory setting. See fig. 6, p. 5 for location of jumpers.

A. J1, J2 – Input AC Line Voltage – Select proper input line voltage, 115VAC or 230VAC,

by placing both J1 and J2 in the correct corresponding position, “115" or “230.” (See fig. 1, p. 3.)

B. J3 – Motor Armature Voltage – Select the desired armature voltage by placing J3 in the

proper position, “90" or “180.” Note: For 115 volt AC Line input, the armature voltage must be set to “90.” For 230 input, the armature voltage normally is set for “180.” However, it is also possible to set the armature voltage to “90" for step-down operation. (See fig. 2 and table 4.)

FIG. 1 – AC LINE VOLTAGE

JUMPER SETTING

115VAC 230VAC 90VDC 180VDC

FIG. 2 – MOTOR ARMATURE

VOLTAGE JUMPER SETTING

TABLE 4 – RELATIONSHIP of AC LINE INPUT AND MOTOR

VOLTAGE with J1, J2 and J3 JUMPER POSITION

AC INPUT VOLTAGE J1, J2 POSITION J3 POSITION MOTOR VOLTAGE

115 115 90 90

230 230 180 180

230 230 90* 90*

*A 90VDC motor can be used with a 230VAC line. However, speed range may be reduced and motor overheating may result.

C. J4 – Armature Current – Select the J4 position (1.7, 2.5, 3.3, 5, 7.5) closest to the rated

motor current. (Note the maximum output current is set to 150% of the J4 position, which may be readjusted using the FWD CL and REV CL trimpots.)

TABLE 5 – JUMPER J4 POSITION vs MOTOR HORSEPOWER

Jumper J4 Position

Motor Current

(DC Amps)

7.5A

5.0A

3.3A

2.5A

1.7A

7.5A 3/4 1

5.0A 1/2 1

3.3A 1/3 3/4

2.5A 1/4 1/2

1.7A 1/6 1/3

D. J5 – Analog Input Voltage –

Jumper J5 is set to the “15V” position for potentiometer operation. If the control is to be operated from an isolated 0 – ±10VDC signal, set J5 to the “10V” position. (See sec. V, F, p. 7.) (See fig. 3.)

Motor Horsepower

90VDC 180VDC

FIG. 3 – JUMPER J5 SETTING

Potentiometer Operation Signal Following

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