KBSI-240D
INSTALLATION AND OPERATING INSTRUCTIONS
MODEL KBSI-240D
Signal Isolator KB Part No. 9431
See Safety Warning on Page 1
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
© 2000 KB Electronics, Inc.
1
MAX
KBSI-240D
P1
VOLT CUR
J1
MIN
2345678910
TABLE OF CONTENTS
Section Page
i. Safety Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
II. Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
III. Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
IV. Output Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
V. Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Tables
1. General Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Voltage Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figures
1. Control Layout & Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2A. 115V Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2B. 230V Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Current Input Signal Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Voltage Input Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5A. Master/Multiple Slave Voltage Following System (Single Main Motor) . . . . . . . . . . . . . . . . . . . . . . 9
5B. Master/Multiple Slave Voltage Following System (Single Main Potentiometer) . . . . . . . . . . . . . . . . 9
6A Master/Slave Voltage Following System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6B. Process Control with Auto/Manual Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6C. Process Control with Auto (Ratio Pot)/Manual Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6D. Auto/Manual Operation with Potentiometer on KBSI Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
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This product complies with all CE directives pertinent at the time of manufacture. Contact
factory for detailed installation instructions and Declaration of Conformity.
i. SAFETY WARNING! Please read carefully:
Be sure to follow all instructions carefully. Fire and/or electrocution can result due to improper
use of this product.
This product should be installed and serviced by a qualified technician, electrician, or electrical
maintenance person familiar with its operation and the hazard involved. Proper installation,
which includes wiring, mounting in proper enclosure, fusing or other over current protection and
grounding, can reduce the chance of electric shocks, fires, or explosion in this product or prod-
ucts used with this product, such as electric motors, switches, coils, solenoids, and relays. Eye
protection must be worn and insulated adjustment tools must be used when working with con-
trol 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 warn-
ing to the ultimate user of this product. (SW effective 11/92)
!
I. INTRODUCTION
The KBSI-240D Signal Isolator is used to isolate, amplify and condition DC voltage and current
signals from any source (motors, tachs and transducers) which will drive most variable speed
motor controls with a voltage following input. The maximum output voltage of the isolator is 10
volts, which is a linear function of the input signal.
The KBSI-240D is versatile since it can accommodate a wide range of input voltages (0 - 25*,
0 - 120 and 0 - 550V DC) and, in addition, a wide range of input current signals (4 - 20 mA, 10
- 50 mA and 1 - 5 mA). The Voltage/Current (“VLT/CUR”) jumper is used to change the
KBSI-240D from a voltage to current input.
A built-in power supply enables the KBSI-240D to be controlled with a 5KΩ remote poten-
tiometer (connect potentiometer to terminals “P1,” “5” and “6” – see page 9). The potentiome-
ter can also be wired for Auto/Manual Operation.
*The input range of 0 - 25V is the maximum voltage that can be applied to terminals “5” and
“6”. The minimum input voltage is 0 - 5 volts, which can achieve an output voltage of 0 - 10
volts. The unit is factory calibrated so that a 0 - 10V DC input yields a 0 - 10V DC output.
II. MOUNTING
Mount the Signal Isolator using (4) 6-32 screws (not included). Use the Control Layout and
Mechanical Specifications drawing on page 3 to locate the mounting holes. The unit is
designed to be mounted in any position providing its components do not come in contact with
grounded or live wiring.
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FIGURE 1 – CONTROL LAYOUT & MECHANICAL SPECIFICATIONS (INCHES / [mm])
(Illustrates Factory Setting of Jumpers and Approximate Trimpot Settings)
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MAX
KBSI-240D
P1
VOLT CUR
J1
MIN
2345678910
(4) mounting holes for #6 screws
2.244
[57.0]
0.276
[7.00]
0.276
[7.00]
4.291
[109.00]
4.843
[123.00]
2.795
[71.0]
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