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
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.
!
A COMPLETE LINE OF MOTOR DRIVES
© 2003 KB Electronics, Inc.
Pending
OLSTOPON
PENTA-DRIVE
REGENERATIVE
DC MOTOR SPEED CONTROL
40
30
20
10
0
FWD
REV
NEMA-4X / IP-65
START
STOP
TM
50
60
70
80
90
100
%
AUTO
MANUAL
TM
TM
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
4
i. SIMPLIFIED OPERATING INSTRUCTIONS
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 prop-
er control function, as described in Section IX, on page 22.
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.
5
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 exclu-
sive 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
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 shielded motor cable and/or AC line cables may be required along with a signal isolator (SIRC [P/N
8842] or equivalent).
6
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.
10
Parameter Specification
Forward Acceleration Trimpot (FACC) Range (Seconds)
Forward Current Limit Trimpot (FWDCL) Range (% Range Setting)
Factory
Setting
AC Line Input Voltage (Volts AC, ±10%, 50/60 Hz) 115 and 208/230
Armature Voltage Range at 115 Volts AC Line (Volts DC) 0 – ±90
230
—
Armature Voltage Range at 208/230 Volts AC Line (Volts DC)
0 – ±90
1
, 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 —
150
Maximum Load Capacity (% for 2 Minutes) 150 —
Current Ranges (Amps DC) 1.7, 2.5, 5, 7.5, 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
0.2 – 15 1
0 – 200
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
TABLE 1 – GENERAL PERFORMANCE SPECIFICATIONS
Maximum Speed Trimpot (MAX) Range (% Base Speed) 70 – 110 100
Deadband Trimpot (DB) Range (% Base Speed) 0 – ±3 0.5
Timed Current Limit Trimpot (TCL) Range (Seconds) 0 – 15 5
TABLE 2 – ELECTRICAL RATINGS
1, (0.75)
Maximum
Horsepower Rating
HP, (kW)
AC Line Input Voltage
(±10%, 50/60 Hz)
(Single Phase Volts AC)
Maximum Output
Load Current
(Amps DC)
115
Maximum AC Line
Input Current
(Amps AC)
15
Nominal Output
Voltage
(Volts DC)
0 – ±90 11
208/230
208/230
15
15
0 – ±180
0 – ±90
1
11
11
2, (1.5)
1, (0.75)
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).
Note: 1. Step-down operation: Motor may have reduced brush life. Consult motor manufacturer.
7
FIGURE 1 – CONTROL LAYOUT
(Illustrates Factory Setting of Jumpers and Approximate Trimpot Settings)
FIGURE 2 – ENLARGED VIEW OF TRIMPOTS
TCLDBIR RESPFWDCLMAXRACC FACCOFFSET REVCL RELAYT- T+
RET STOP-15V SIGCOMEN COM +15V START
15V
J5
10V
SPD
TRQ
J6
1.7A
5A
7.5A
10A
2.5A
J4
EN
J11
S/L
NL
J7
T50
T7
A90
A180
J3
J8TCL
NTCL
REV
FWD
CTS
NC
CON1
EN
EN
RTS
J10
OL
J9
NO
PWR ON
TB3
ON
STOP
CL
Y
LED BOARD
G
R
B
J2
115V 230V 115V
230V
J1
KBRC
L1BL1A
F2
F1
TB2
TB1
M1 M2F+
F-
L1
L2BL2A
L2
TCLDBIR RESPFWDCLMAXRACC FACCOFFSET REVCL
8
FIGURE 3 – MECHANICAL SPECIFICATIONS (Inches / [mm])
5.000
[127.00]
RECOMMENDED MOUNTING SCREW: 1/4" (M6)
5.886
[149.50]
5.472
[138.99]
0.357
OLSTOPON
[9.07]
TM
REGENERATIVE
DC MOTOR SPEED CONTROL
PENTA-DRIVE
80
60
70
90
100
50
40
%
REV
FWD
0
10
30
20
NEMA-4X / IP-65
AUTO
START
TM
MANUAL
STOP
KBRC-240D SHOWN WITH OPTIONAL
FORWARD-BRAKE-REVERSE AND AUTO/MANUAL SWITCHES
8.226
[208.94]
8.876
[225.45]
9.488
[241.00]
9
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, tach-
generator 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 con-
tactor 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.
3.5
Terminal
Block
Supply Wire Gauge (AWG-Cu)
Designation Connections
Maximum
Tightening Torque
(in-lbs)
Minimum Maximum
TB1
TB1
TB2
TB3
TB3
AC Line Input
Motor Armature
Motor Field (Shunt
Wound Motors Only)
Tach-Generator
Run Relay
L1 and L2
M1 and M2
F1 and F2
T+ and T-
RELAY
22
22
24
24
24
12
12
14
14
14
12
12
3.5
3.5
TABLE 3 – TERMINAL BLOCK WIRING INFORMATION
!
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
line to L1 and L2 terminals of
Terminal Block TB1, as shown in
Figure 4.
B. Ground Connection – Earth ground
the control chassis using the green
ground screw that is provided on the
inside of the control to the right side
of Terminal Block TB1, as shown in
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).
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
FIGURE 4 – POWER CONNECTIONS
FIGURE 5 – FULL VOLTAGE FIELD CONNECTION
(Shunt Wound Motors Only)
FIGURE 6 – HALF VOLTAGE FIELD CONNECTION
(Shunt Wound Motors Only)
!
TB1
TB2
M1 L1M2
F+
F-
+
M
-
MOTOR
L2
AC LINE
FIELD
(SHUNT MOTORS
ONLY)
TB1
TB2
L2
F+
+
M2M1 L1
F-
+
M
-
-
MOTOR
AC LINE
FIELD
(SHUNT MOTORS
ONLY)
TB1
TB2
L2
F+
+
M2M1 L1
F-
+
M
-
-
MOTOR
AC LINE
GROUND
(EARTH)
GROUND
(EARTH)
GROUND
(EARTH)
11
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.
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
Operation – Connect the Main
Speed Potentiometer high side
to +15V terminal, wiper to SIG
terminal and low side to COM
terminal, as shown in Figure 7.
Rotating the Main Speed
Potentiometer clockwise will
increase motor speed in the forward direction. Rotating the
Main Speed Potentiometer
counterclockwise will decrease motor speed.
Note: Jumper J5 must be set to the
“15V” position.
2. Unidirectional Reverse
Operation – Connect the Main
Speed Potentiometer high side
to -15V terminal, wiper to SIG
terminal and low side to COM
terminal, as shown in Figure 8.
Rotating the Main Speed
Potentiometer clockwise will
increase motor speed in the
reverse direction. Rotating the
Main Speed Potentiometer
counterclockwise will decrease motor speed.
Note: Jumper J5 must be set to the
“15V” position.
F+ and L1
Field Voltage
(Volts DC)
Field Connections
AC Line Voltage
(Volts AC)
Armature Voltage
(Volts DC)
115 0 – ±90
115
208/230
208/230
208/230
0 – ±90
0 – ±90
0 – ±180
0 – ±180
100
50
200
100
100
F+ and F-
F+ and L1
F+ and F-
F+ and L1
TABLE 4 – FIELD CONNECTION (SHUNT WOUND MOTORS ONLY)
FIGURE 7 – UNIDIRECTIONAL FORWARD
MAIN SPEED POTENTIOMETER CONNECTION
FIGURE 8 – UNIDIRECTIONAL REVERSE
MAIN SPEED POTENTIOMETER CONNECTION
MAIN SPEED
POTENTIOMETER
(BACK VIEW)
LOW (WHITE)
WIPER (ORANGE)
HIGH (VIOLET)
SIG-15VCOM +15V
LOW (WHITE)
WIPER (ORANGE)
MAIN SPEED
POTENTIOMETER
(BACK VIEW)
HIGH (VIOLET)
-15V SIGCOM +15V
12
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 ONOFF-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 sup-
plied 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.
CAUTION! Eliminating the Start/Stop function
using a jumper will cause the motor to run at the
Main Speed Potentiometer setting when the AC line is applied.
FIGURE 9 – BIDIRECTIONAL MAIN SPEED
POTENTIOMETER CONNECTION
FIGURE 10 – BIDIRECTIONAL MAIN SPEED
POTENTIOMETER CONNECTION WITH
REVERSING CONTACTS
FIGURE 11 – REMOTE
START/STOP SWITCH
CONNECTION
FIGURE 12 – START/STOP
FUNCTION ELIMINATED
(JUMPER INSTALLED)
MAIN SPEED
POTENTIOMETER
(BACK VIEW)
MAIN SPEED
POTENTIOMETER
(BACK VIEW)
!
LOW (WHITE)
WIPER (ORANGE)
HIGH (VIOLET)
+15V -15V SIGCOM
LOW (WHITE)
WIPER (ORANGE)
HIGH (VIOLET)
FORWARD-STOP-REVERSE
SWITCH
REV
FWD
STOP
-15V SIGCOM +15V
START/STOP SWITCH
STOP
START
RED
BLACK
WHITE
STOPSTARTRET
STOPSTARTRET
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.
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-
ed
0 - 10 Volt DC or 0 - 15 Volt DC analog sig-
nal voltage can also be used to control motor
speed. See Figure 13. Note: Jumper J5
must be set to the “10V” position if using a 0 ±10 Volt DC analog signal voltage or to the
“15V” position if using a 0 - ±15 Volt DC analog signal voltage.
Note: If an isolated signal voltage is not available, 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
also be started and stopped with an Enable
Circuit (close to start). See Figure 14. The
Enable function is established by wiring a
switch in series with the EN and COM terminals. When the Enable switch is closed, the
control will accelerate to the Main Speed
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.
Warning! Do not use Enable as a safety disconnect. Use only the AC line for
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 of
13
Closed
MODE
JUMPER J10
POSITION
RUN RELAY
CONTACTS
Run
Stop
TCL
NO
NC
NO
NC
NO
NC
Closed
Open
Open
Closed
Open
TABLE 5 – RUN RELAY OUTPUT CONTACTS
FIGURE 13 – VOLTAGE FOLLOWING
CONNECTION
FIGURE 14 – ENABLE CIRCUIT
CONNECTION
0 – ±10V or ±15V DC
(ISOLATED)
SIG+15VCOM -15V
SIGCOM
ENABLE
SWITCH OR RELAY
(CLOSE TO START)
EN COM
!
14
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 RTin series with the tach-generator, as shown in Figure 16.
Jumper J3 must be set to the “7V” position.
The value of RTin Ω can be calculated using the following formula:
RT= (4.37 X VTX S) - 55000 Where VTis 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
Voltage
Selection (J1
and J2) –
Jumpers J1
and J2 are
both factory
set to the
“230V” position
for 208/230
Volt AC line input. For 115 Volt AC line
input, set
both Jumpers J1 and J2 to the
“115V” position. See Figure 17.
B. Motor Voltage Selection (J3) – Jumper
J3 is factory set to the “A180” position for
180 Volt motors. For 90 Volt motors, set
Jumper J3 to the “A90” position. See
Figure 18.
FIGURE 15 – DC TACH-GENERATOR
CONNECTION
FIGURE 16 – DC TACH-GENERATOR
CONNECTION WITH ADDITION OF R
T
Control Set for 208/230 Volt AC Line Input
(Factory Setting)
Control Set for 115 Volt AC Line Input
J1 Set for 208/230
Volt AC Line
J2 Set for 208/230
Volt AC Line
J1 Set for 115
Volt AC Line
J2 Set for 115
Volt Ac Line
FIGURE 17 – AC LINE INPUT VOLTAGE SELECTION
J3 Set for 90 Volt Motor
J3 Set for 180 Volt Motor
(Factory Setting)
FIGURE 18 – MOTOR VOLTAGE
SELECTION
RELAYT- T+
TB3
+
G
DC TACH-GENERATOR
-
T+ RELAYT-
TB3
+
G
RT
DC TACH-GENERATOR
-
230V 115V
J1
J2
115V 230V
230V 115V
J1
J2
115V 230V
T50
T7
A90
A180
J3
A90
A180
T7
T50
J3
15
Note: If Jumper J3 is set to the “T7” or “T50” position, a tach-generator must be wired to
Terminal Block TB3. If a tach- generator 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-generator 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-generator 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.
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.
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.
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).
J3 Set for 7V per 1000
RPM Tach-Generator
J5 Set for
0 – ±10 Volt Input Signal
J5 Set for
0 – ±15 Volt Input Signal
(Factory Setting)
J3 Set for 50V per 1000
RPM Tach-Generator
FIGURE 19 – DC TACH-GENERATOR
VOLTAGE SELECTION
J4 Set for
1.7 Amp Motor
J4 Set for
10 Amp Motor
(Factory Setting)
J4 Set for
7.5 Amp Motor
J4 Set for
5 Amp Motor
J4 Set for
2.5 Amp Motor
FIGURE 20 – MOTOR CURRENT SELECTION
TABLE 6 – SETTING MOTOR CURRENT
2, (1.5)
J4 Setting (Amps DC)
SCR Rated Motor Horsepower – HP, (kW)
180 Volt DC Motors
1.7
90 Volt DC Motors
2.5
5.0
7.5
10
1/6, (0.1)
1/4, (0.18)
1/2, (0.37)
3/4, (0.5)
1, (0.75)
1/3, (0.25)
1/2, (0.37)
1, (0.75)
11⁄2, (1)
FIGURE 21 – ANALOG INPUT SIGNAL
VOLTAGE SELECTION
T50
T7
A90
A180
J3
T50
T7
A90
A180
J3
1.7A
5A
7.5A
2.5A
10A
1.7A
5A
7.5A
2.5A
10A
1.7A
5A
2.5A
7.5A
10A
1.7A
5A
7.5A
2.5A
10A
1.7A
5A
2.5A
7.5A
10A
J4
J4
J4
J4
J4
15V
J5
10V
15V
J5
10V
16
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.
Note: The TCL trimpot will have no affect
when Jumper J8 is in the “NTCL” position.
I. Stop Mode Selection (J9) – Jumper J9 is
factory set to the “RTS” position, for
Regenerate-to-Stop Mode. For Coast-toStop Mode, set Jumper J9 to the “CTS”
position. See Figure 25.
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.
J10 Set for
Normally closed Run
Relay Output Contacts
J10 Set for
Normally Open Run
Relay Output Contacts
(Factory Setting)
J9 Set for
Coast-to-Stop Mode
J9 Set for
Regenerate-to-Stop Mode
(Factory Setting)
FIGURE 25 – STOP MODE
SELECTION
J8 Set for
Non-Timed Current Limit
J8 Set for
Timed Current Limit
(Factory Setting)
J6 Set for
Torque Control Mode
J6 Set for
Speed Control Mode
(Factory Setting)
FIGURE 22 – CONTROL MODE
SELECTION
J7 Set for
Speed Mode and
Linear Torque Mode
(Factory Setting)
J7 Set for
Non-Linear Torque Mode
FIGURE 23 – TORQUE MODE
SELECTION
FIGURE 24 – CURRENT LIMIT MODE
SELECTION
FIGURE 26 – RUN RELAY OUTPUT
MODE SELECTION
SPDTRQ
J6
SPDTRQ
S/L
S/L
J7
NL
NL
J7
J8TCL
J8TCL
NTCL
NTCL
!
RTS
J9
RTS
CTS
CTS
J10
NC
NO
J10
NC
J6
J9
NO
K. Enable Jumper (J11) – Jumper J11 is fac-
tory 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
Warning! The KBRC-240D is not designed to be used in an explosion-proof application.
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.
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
J11 Not installed for
Manual Enable
J11 Installed for
Auto-Enable
(Factory Setting)
FIGURE 27 – ENABLE JUMPER
FIGURE 28 – HI-POT TEST SETUP
EN
J11
EN
J11
!
HIGH VOLTAGE DIELECTRIC WITHSTAND TESTER
(HI-POT TESTER)
LEAKAGE
0mA 10mA
AC KILOVOLTS
21
30
TEST
RETURN
H. V.
AC LINE INPUT
RESET
CONNECT HI-POT
TO BOTH
AC LINE INPUTS
VOLTAGE
MAX
ZERO
AUXILIARY EQUIPMENT
L1
L2
MACHINE OR EQUIPMENT FRAME
MOTOR SPEED CONTROL
L1
MOTOR
L2
TERMINALS
SIGNAL INPUTS
SIG
-15V
+15V
COM
CHASSISCHASSIS
CONNECT ALL SPEED CONTROL
TERMINALS TOGETHER
(MAIN POWER DISCONNECTED)
MOTOR WIRES
FRAME
!
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.
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.
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
CW
Load Torque
Direction
Quadrant Type of Operation
Motor Rotation
Direction
Motor Torque
Direction
I
II
III
IV
Motoring
Regeneration
Motoring
Regeneration
CW
CCW
CCW
CW
CW
CW
CCW
CCW
CCW
CCW
CW
TABLE 7 – CONTROL OPERATION
FIGURE 29 – LINEAR TORQUE MODE
FIGURE 30 – NON-LINEAR TORQUE MODE
100
90
80
70
60
50
40
PERCENT OF BASE SPEED
30
20
LOWER
TORQUE
SETTING
0
HIGHER
TORQUE
SETTING
40302010100
PERCENT OF TORQUE
10090807050 60
100
90
80
70
60
LOWER
TORQUE
SETTING
50
40
PERCENT OF BASE SPEED
30
20
10
0
0
PERCENT OF TORQUE
HIGHER
TORQUE
SETTING
1008070 9040 605010 20 30
VIII. TRIMPOT ADJUSTMENTS
The KBRC-240D contains trimpots which are factory set for most
applications. Figure 2, on page 7, illustrates the location of the trimpots and their approximate calibrated positions. Some applications
may require readjustment of the trimpots in order to tailor the control
for a specific requirement. Readjust trimpots as described below.
Warning! If possible, do not adjust trimpots with the
main power applied. If adjustments are made with the
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
can result if caution is not exercised. Safety Warning, on page
5, must be read and understood
before proceeding.
A. Offset (OFFSET) –
Sets the
amount of bias in the forward or
reverse direction. The OFFSET
trimpot is factory set for approximately zero offset, which
means that neither the forward
nor reverse direction is favored.
To offset the control in the forward direction, rotate the OFFSET trimpot clockwise. To offset the control in the reverse
direction, rotate the OFFSET
trimpot counterclockwise. See
Figure 31 and Figure 32.
B. Forward Acceleration (FACC)
and Reverse Acceleration
(RACC) – Sets the amount of
time it takes the control voltage
to reach full output. The FACC
and RACC trimpots are factory
set to 1 second. See Figure 33,
Figure 34 and Figure 35.
The FACC trimpot sets the
amount of time it takes the control voltage to reach full output in the
forward direction. It also sets the
amount of time it takes the control
voltage, in the reverse direction, to
reach zero output (FACC also sets
the reverse deceleration time). To
increase the forward acceleration
time, rotate the FACC trimpot clockwise. To decrease the forward
acceleration time, rotate the FACC
trimpot counterclockwise.
The RACC trimpot sets the amount
of time it takes the control voltage to
reach full output in the reverse
direction. It also sets the amount of
time it takes the control voltage, in
the forward direction, to reach zero
19
FIGURE 31 – OFFSET
TRIMPOT RANGE
FIGURE 32 – OFFSET TRIMPOT ADJUSTMENT
FIGURE 33 – FACC
TRIMPOT RANGE
FIGURE 34 – RACC
TRIMPOT RANGE
FIGURE 35 – FACC AND RACC
TRIMPOT ADJUSTMENT
!
PERCENT OF BASE SPEED
100
-100
10
CBA
7.5
5
1
0.2
SECONDS
(SHOWN FACTORY SET TO 1 SECOND)
10
15
100
FWD ACCEL
PERCENT OF BASE SPEED
-100
-10
-100
REV ACCEL
0
-5
-10
PERCENT OF BASE SPEED
(SHOWN FACTORY SET TO 0%)
CBA
PERCENT OF MAIN
SPEED POTENTIOMETER
ROTATION
100
A - FORWARD OFFSET
B - ZERO OFFSET
C - REVERSE OFFSET
7.5
5
1
0.2
SECONDS
(SHOWN FACTORY SET TO 1 SECOND)
REV ACCEL
FWD ACCEL
+5
+10
10
15
TIME
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.
The MAX trimpot is factory set for 100% of base motor speed.
For a higher maximum speed setting, rotate the MAX trimpot
clockwise. For a lower maximum speed setting, rotate the MAX
trimpot counterclockwise. See Figure 36.
To Calibrate the MAX Trimpot:
1. Adjust the MAX trimpot to the desired position and set the
Main Speed Potentiometer for full output voltage.
2. Monitor the armature voltage and readjust the MAX trimpot
to the desired voltage.
D. Forward Current Limit (FWDCL) and Reverse Current
Limit (REVCL) –
Sets the current limit (overload), which
limits the maximum current to the motor. The FWDCL and
REVCL trimpots are factory set for 150% of J4 range setting. See Figure 37 and Figure 38.
The FACC trimpot sets the current limit in the forward direction. To increase the forward current limit, rotate the
FWDCL trimpot clockwise. To decrease the forward current limit, rotate the FWDCL trimpot counterclockwise.
The RACC trimpot sets the current limit in the reverse
direction. To increase the reverse current limit, rotate the
REVCL trimpot clockwise. To decrease the reverse current
limit, rotate the REVCL trimpot counterclockwise.
CAUTION! Adjusting the FWDCL or REVCL above 150%
of motor rating can cause overheating and demagnetization of some PM motors. Consult the motor manufacturer.
Do not leave the motor in a locked condition for more than
a few seconds since armature damage may occur.
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.
20
FIGURE 36 – MAX
TRIMPOT RANGE
FIGURE 37 – FWDCL
TRIMPOT RANGE
FIGURE 38 – REVCL
TRIMPOT RANGE
FIGURE 39 – IR
TRIMPOT RANGE
90
80
70
PERCENT OF BASE SPEED
(SHOWN FACTORY SET TO 100%)
100
50
0
PERCENT OF JUMPER J4 RANGE SETTING
(SHOWN FACTORY SET TO 150%)
100
50
0
PERCENT OF JUMPER J4 RANGE SETTING
(SHOWN FACTORY SET TO 150%)
7.5, 15
5, 10
0
(SHOWN FACTORY SET TO 10 VOLT
AND 5 VOLTS AT 90 VOLTS DC OUTPUT)
VOLTS
AT 180 VOLTS DC OUTPUT
100
110
150
200
150
200
10, 20
15, 30
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.
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.)
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.
21
FIGURE 40 – RESP
TRIMPOT RANGE
FIGURE 41 – DB
TRIMPOT RANGE
FIGURE 42 – DB TRIMPOT ADJUSTMENT
FIGURE 43 – TCL
TRIMPOT RANGE
50
RELATIVE RESPONSE
(SHOWN FACTORY SET TO 50%)
1.5
0.5
0
PERCENT OF BASE SPEED
(SHOWN FACTORY SET TO 0.5%)
PERCENT OF BASE SPEED
100
-100 100
3-3
PERCENT OF MAIN
SPEED POTENTIOMETER
ROTATION
BABA
A - MAXIMUM DEADBAND
B - ZERO DEADBAND
-100
7.5
5
0
(SHOWN FACTORY SET TO 5 SECONDS)
SECONDS
FASTERSLOWER
2.5
3
10
15
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.
22
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 volt-
age 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 isolat-
ed 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 direc-
tives.
23
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)
(A40252) – Rev. B – 8/2003
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
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