KB Electronics KBMG SERIES Data Sheet
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DESCRIPTION
The KBMG are ultracompact, full-wave regenerative drives capable of
operating DC PM or Shunt motors in a bidirectional mode. Its (4) quadrant
operation provides forward and reverse torque in both speed directions.
This allows the control to maintain constant speed with overhauling loads
and provides rapid reversing and controlled braking. Because of its excellent controllability and response time, the KBMG can replace servos in
many applications. The control is factory set for armature feedback, which
provides up to 1% load regulation over a motor base speed of 50:1. Tachgenerator feedback is also provided for superior load regulation if required.
A simple jumper setting converts the KBMG to a torque control. In this
mode, motor torque rather than motor speed is controlled.
An important feature of the drive is the factory-calibrated, built-in,
selectable motor current jumper. It eliminates the need to recalibrate IR
Comp and Current Limit for most applications.
The control contains an Enable function that can be used to start and
stop the motor electronically via a contact closure. Through a jumper selection, the motor can be controlled to rapidly “regenerate to stop” or to “coast
to stop.”
KB’s exclusive Auto Inhibit® circuit provides safe, smooth starting
even during rapid cycling of the AC line. The Overspeed Protect Circuit prevents failure of the power bridge in extreme overhauling conditions.
Reliability of the KBMG is further enhanced with the use of a high speed
current limit circuit and MOV transient protection. LED’s, which can be used
for diagnostics, are provided for power on and motor overload. A rugged
extruded aluminum heat sink ensures enhanced heat transfer, which provides a higher control rating while maintaining cooler running SCR’s. The
KBMG contains a finger-safe cover to meet the IP-20 Standard.
Power connections to the KBMG are made via quick connect terminals and signal input connections are made via a removable barrier terminal block. A 5k remote potentiometer and full operating instructions are
supplied.
KBMG SERIES
STANDARD FEATURES
DATA SHEET D-420A
A Complete Line of Motor Drives
1/50 – 1 HP1@ 115 VAC – 50/60 Hz
1/25 – 2 HP
1
@ 230 VAC – 50/60 Hz
ACCESSORIES
• Auxiliary Heat Sink (Part No. 9861) – Increases the control rating to 1 HP at
90 VDC and 2 HP at 180 VDC. Dimensions (L x W x H approx.): 7.0” x 6.3” x 1.9”.
• SIMG Bipolar Signal Isolator (Part No. 8832) – Allows a non-isolated signal
source to be used.
• Multi Speed Board (Part No. 8833) – Provides discrete preset speeds which can
be controlled from a PLC.
• DIN Rail Mounting Kit (Part No. 9995) – Converts control to standard DIN Rail
Mounting.
• Jumper Selectable Features
Operation Mode: Speed, Torque
AC Line Voltage (VAC – 50/60 Hz): 115, 230
DC Armature Voltage (VDC): 90, 180
Tach-generator Voltage (VDC/ 1000 RPM): 7, 50
DC Current Output Ranges (ADC): (0.17 – 1.0, 1.7 – 101)
Analog Input Voltage (VDC): 0 to ±10, 0 to ±15
Enable: Coast to Stop (CTS), Regenerate to Stop (RTS)
• Trimpot Adjustments
Dead Band (DB) • Response (RESP) • IR Compensation (IR)
Forward Current Limit (FCL) • Reverse Current Limit (RCL)
Maximum Speed (MAX) • Forward Acceleration (FACC)
Reverse Acceleration (RACC)
• LEDs
Power On (PWR ON) • Overload (OL)
AC Line Input Voltage (VAC ±10%, 50/60 Hz) . . . . . . . . . . . . . . . . 115 or 230
AC Line Frequency (Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50/60
Armature Voltage Range 115 VAC Line (VDC) . . . . . . . . . . . . . . . . . . 0 to ± 90
Armature Voltage Range 230 VAC Line (VDC) . . . . . . . . 0 to ± 90, 0 to ± 180
Field Voltage at 115 VAC Line (VDC) . . . . . . . . . . . . . . . . . . . . . . . . . 100 / 50
Field Voltage at 230 VAC Line (VDC) . . . . . . . . . . . . . . . . . . . . . . . . 200 / 100
Maximum Load Capacity (% for 2 Minutes) . . . . . . . . . . . . . . . . . . . . . . . . 150
Ambient Temperature Operating Range (ºC) . . . . . . . . . . . . . . . . . . . . 0 to 50
Speed Range (Ratio) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50:1
Armature Feedback Load Regulation (% Base Speed) . . . . . . . . . . . . . . . . ±1
3
Tach-generator Feedback Load Regulation (% Set Speed) . . . . . . . . . . . . ±1
3
AC Line Regulation (% Base Speed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5
3
KBMG-21D Current Ranges (Amps DC) . . . . . . . . . . 0.17, 0.25, 0.5, 0.75, 1.0
KBMG-212D Current Ranges (Amps DC) . . . . . . . . . . . 1.7, 2.5, 5.0, 7.5, 10
1
Forward Accel (FACC) and Reverse Accel (RACC) Range (Sec.) . . . . 0.1 to 15
Dead Band Range (% Base Speed) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to ±5
Max Speed Trimpot Range (% Base Speed) . . . . . . . . . . . . . . . . . . 55 to 110
3
IR Comp Range at 115 VAC Line (VDC @ Full Load) . . . . . . . . . . . . . . 0 to 20
IR Comp Range at 230 VAC Line (VDC @ Full Load) . . . . . . . . . . . . . . 0 to 40
Forward CL (FCL) and Reverse CL (RCL) Range (% Range Setting) . . 0 to 175
Voltage Following Input Range (VDC)
4
. . . . . . . . . . . . . . . . 0 to ±10, 0 to ±15
Voltage Following Linearity (% Base Speed) . . . . . . . . . . . . . . . . . . . . . . . ±0.5
SPECIFICATIONS
Notes:
1. Maximum rating indicated is with Auxiliary Heat Sink (Part No. 9861). For maximum rating without
Auxiliary Heat Sink see Electrical Rating Chart. 2. CE compliance requires KBRF-200A RFI Filter (or
equivalent) and proper wiring practices. 3. Performance is for 90V PM motors on 115 VAC and 180V PM
motors on 230 VAC. 4. Requires isolated input or SIMG Signal Isolator (Part No. 8832).
ULTRACOMPACT REGENERATIVE DRIVE
FULL-WAVE • 4-QUADRANT • IP-20
SCR Bidirectional Variable Speed and Torque Control
for PM and DC Shunt Motors
Models KBMG-21D, 212D cover:
2
TM
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
(A42094) – Rev. B – 8/2004
ELECTRICAL RATINGS
CONNECTION DIAGRAMS
Model Part No.
AC Line Voltage
(VAC) ±10%
50/60 Hz
Motor
Voltage
(VDC)
Maximum Rating Without Auxiliary Heat Sink Maximum Rating With Auxiliary Heat Sink
AC Line Current
(RMS Amps)
DC Load Current
(Avg. Amps)
Horsepower
HP, (kW)
AC Line Current
(RMS Amps)
DC Load Current
(Avg. Amps)
Horsepower
HP, (kW)
KBMG-21D 8830
115 0 – ±90 1.5 1.0 .075, (.06) — — —
208 /230 0 – ±180 1.5 1.0 .15, (.11) — — —
KBMG-212D 8831
115 0 – ±90 12.0 8.0 .75, (.6) 16.0 11.0 1.0, (.75)
208 /230 0 – ±180 12.0 8.0 1.5, (1.1) 16.0 11.0 2.0, (1.50)
MECHANICAL SPECIFICATIONS (Inches / mm)
MAIN SPEED POTENTIOMETER CONNECTIONS
(Note: Jumper J4 in “15V” Position)
DATA SHEET D-420A
DC Tach-Generator
G
-
+
-
+
M
M1
Motor Armature
M2
-
+
Motor Field
(shunt motors only)
Enable Switch
(close to run, open to stop)
FORWARD
COMEN TACH +15V SIG –15V
TB1
5k
BIDIRECTIONAL WITH
REVERSING CONTACT
COMEN TACH +15V SIG –15V
TB1
5k
TACH-GENERATOR
COMEN TACH +15V SIG
TB1
DC TACH – GENERATOR
–15V
+–
COMEN TACH +15V SIG –15V
TB1
BIDIRECTIONAL WITH
COMEN TACH +15V SIG –15V
TB1
VOLTAGE FOLLOWING
COMEN TACH +15V SIG –15V
TB1
(NOTE: JUMPER J4 IN "10V"
POSITION. SIGNAL MUST
BE ISOLATED.)
RCL RACCMAX FACCFCLRESP IRDB
F-
F+
J2
5.0
1.7A2.510A 7.5
SPD
TRQ
J5
15V
10V
TB1
EN TACHCOM SIG+15V -15V
J4
Overload LED (OL) is located
below Finger-Safe Cover.
RTS
CTS
J6
L2
AC Line Input
(50/60 Hz)
L1
LED1
PWR
ON
J3
T50
T7
A180
A90
Terminal Block TB1 is removable
Low
Wiper
High
to facilitate wiring.
Bidirectional
Main Speed Potentiometer
(Jumper J4 set to the "15V" position)
230V115V J1B 115VJ1A
Chassis
Ground (Earth)
STOP
Notes:
1. Trimpots and jumpers are
shown in factory set position.
2. For 7V/1000 RPM tach-generator,
set Jumper J3 to the "T7" position.
For 50V/1000 RPM tach-generator,
set Jumper J3 to the "T50" position.
A connection must be made between
"EN" and "COM" for control to operate.
FWD
REV
REVERSE
SPEED POT
FWD
5k
5k
REV
0 – ±10V
0.25
6.35
3.80
96.5
4.30
109
0.49
12.4
0.19
8 Places
4.83
115V115V J1AJ1B 230V
PWR
LED1
ON
J6
CTS
RTS
T50
A180T7A90
J3
RACC
J4
10V
15V
+15V
COM TACH -15VSIG
EN
TB1
0.75
19.1
J5
SPD
J2
RESP IRDB
3.69
93.7
TRQ
2.5 1.7A
7.510A 5.0
RCL
MAX FACCFCL
1.75
44.5
3.63
92.1
0.95
24.1
1.95
49.5
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