KB Electronics KBRG-255 User Manual

Page 6

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 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).

GENERAL INFORMATION.

The KBRG-255 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 offers excellent

controllability, which closely approximates the performance of servo-type drives. Ratings and

specifications are presented in tables 1 and 2. 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

Part No.

Input

Voltage

(VAC)

Max. AC

Current

(RMS)

Output

Voltage

(VDC)

Max. DC

Output

Current (ADC)

Max.

Horsepower

HP, (KW)

KBRG-255

8821

230

0 – ±180

5, (3.8)

TABLE 2 – GENERAL PERFORMANCE SPECIFICATIONS

Parameter

Specification

Factory Setting

AC Line Input Voltage (VAC ±10%,50/60 Hz)
AC Line Frequency (Hz), # of Phases
Arm Voltage Range at 230VAC 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)
Tach Feedback Load Regulation (% Set Speed)
Line Regulation (% Base Speed)
FWD and REV Accel Range (Secs.)
Dead Band Range (% Base Speed)
Max Speed Trimpot Range (% Base Speed)
IR Comp Range at 230VAC Line (VDC)
FWD and REV CL Range (%)
Timed CL Range (Sec.)
Voltage Following Input Range (VDC)
Voltage Following Linearity (% Base Speed)
Tach-generator Voltage input (volts)

230
50/60, 1
0 – ±180
200/100
1.0
Continuous
150
0 – 50

(1)

50:1
±1
±1
±0.5
0.1 – 15
0 – ±3
70 – 110
0 – 30
0 – 200
1 – 15
0 – ±10, 0 – ±15
±0.5
7, 20/30, 50

230
—
0 – ±180
—
—
—
—
—
—
—
—
—
1
0
100
10
150
5
0 – ±15
—

Notes: Control mounted with colling fins in vertical position. Maximum ambient temperature in horizontal

position is 45 ºC.